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malantecnc · 2 years

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Overview of CNC Turning Machining System and CNC Manufacturers Introduction

The editor will give a brief overview of the relevant knowledge of CNC turning machining system, and provide several major CNC manufacturers introduction.

CNC Manufacturers Introduction

The CNC turning machining system consists of hardware and software. At present, the three largest CNC manufacturers in the world are: Japan's FANUC (FANUC), Germany's Siemens (SIEMENS), Japan's Mitsubishi (MITSUBISHI); in addition, there are France's NUM (NUM), Spain's Van Gogh (FAGOR) and so on. Domestic CNC manufacturers include Huazhong CNC, Zhonghua CNC, Aerospace CNC and Lantian CNC. Among them, Huazhong CNC and Zhonghua CNC are single-machine CNC systems formed by embedding CNC special modules into general-purpose PCs, while Aerospace CNC and Lantian CNC are multi-machine CNC systems formed by embedding PCs into CNCs, forming a typical front-end and back-end structure. These systems are briefly described below.

Overview of CNC turning machining System

1. Japan FANUC series CNC system

The CNC products produced by FA NUC mainly include FS3, FS6, FS0, FS10/11/12, FS15, FS16, FS18, FS21/210 and other series. At present, users in my country mainly use FS0 series, FS15, FS16, FS18, FS21/210, FANUC 0i and other series.

2. SINUMERIK series CNC system of German SIEMENS company

SINUMERIK series CNC system has many series and models, mainly including SINUMERIK3, SINUMERIK8, SINUMERIK802, SINUMERIK810/820, SINUMERIK850/880 and SINUMERIK840.

3. Huazhong Numerical Control System (HNC)

HNC system is a domestic CNC system produced by Wuhan Huazhong CNC System Co., Ltd. This system is a successful project of applying the scientific research results of my country's 863 plan in practice. The developed and applied products include two series of Huazhong I CNC system (HNC-I) and Huazhong 2000 CNC system (HNC-2000), a total of ten Six models. Among them, HNC-2000 CNC system has been developed and derived CNC system products mainly include HNC-2000M milling machine, machining center CNC system, HNC-2000T lathe CNC system, HNC-2000Y gear machining CNC system, HNC-2000P digital copying CNC system System, HNC-2000L laser processing CNC system, HNC-2000G five-axis linkage tool grinder CNC system, etc.

CNC Turning Machining Part Supplier - Malante

Malante is mainly engaged in the manufacture of CNC Turning Machining Part. Our company has been deeply involved in this industry for many years and has rich experience.

If you have products including carbon steel, stainless steel, die steel, titanium alloys, copper, aluminum, plastic or other materials that need to be machined by CNC turning machining lathes, you can always contact us. We will provide you with high-precision, high-demand products and high-quality after-sales service.

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malantecnc · 2 years

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The use characteristics of vertical turning machining center

As the production industry begins to rely on various machines for processing, it can not only ensure the production quality of parts, but also achieve better results for the production of high-precision precision parts.

Nowadays, the application of vertical CNC turning machining center is gradually widespread, which can improve our production efficiency, and there will be almost no failure problems during use. The following will give you a comprehensive introduction to the use of this vertical CNC turning machining center.

The use characteristics of vertical CNC turning machining center

1. When the vertical CNC turning machining center is used, it can not only make the production and processing more efficient, but also improve the processing stability, and can simplify the overall processing and production complexity to the greatest extent. In terms of efficiency, it can also reach higher standards, so it can achieve higher production efficiency in the shortest time, which brings absolute guarantee to the processing and production of enterprises. no errors will occur.

2. By using the vertical CNC turning machining center for processing and production, the overall production process can be simplified, and the processing accuracy can be improved during use, avoiding various complex error values, and the accumulation of errors. In the process, it will also easily cause a particularly serious impact, which will not only affect the overall production accuracy standards, but may also waste raw materials to a certain extent, and there will be many problems in the process of sales. Therefore, in order to meet the needs of the public According to the needs of users, higher precision must be achieved in the production process. A very high performance also needs to be paid attention to when selecting mechanical equipment.

3. It is also necessary to achieve higher technological standards in terms of production and processing technology, which can naturally make the effect of use more perfect, and can shorten the overall manufacturing process chain. When we carry out processing and production, we do not need to invest too much work. Therefore, in terms of production and processing and operation management, the overall capital cost will be reasonably controlled, and now in the process of processing and production, there is an online intelligent monitoring system, and any problems can be directly alarmed. The staff can get to know the situation as soon as possible.

Although the vertical CNC turning machining center has these advantages and characteristics in use, the premise is that everyone must operate it correctly, and must choose the equipment produced by the regular manufacturer for use, in order to achieve good use advantages, and It can avoid any unexpected problems in the process of use, so everyone needs to be able to strictly select and compare when purchasing.

Vertical CNC turning machining products supplier - Malante

Suzhou Malante Precision Machinery Co., Ltd. is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. Marant will provide you with the following products and services: Vertical CNC turning machining; precision grinding machine machining; Precision welding machining. Turn- Milling Compound Machining is a hot-selling product of Vertical CNC turning machining products, if you are interested in this product series, please click here.

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malantecnc · 2 years

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How to deal with the deformation of thin-walled CNC turning machining parts

In order to deal with the deformation of thin-walled CNC turning maching parts, it is important to find out the processing tips of thin-walled CNC turning machining parts.

What is a thin-walled CNC turning part?

Thin-walled CNC turning parts are precision parts produced by CNC turning technology, and their wall thickness is much smaller than other dimensions of the parts.

Processing difficulties of thin-walled CNC turning machining parts

In the CNC turning process, the main difficulty in machining thin-walled parts is deformation, which may be caused by cutting force, resulting in the shape becoming oval or small in the middle and large at both ends. In addition, poor heat dissipation further leads to thermal deformation due to the casing of the thin-walled workpiece.

1. Thin-walled CNC turning machining parts cannot withstand large radial forces, and it is generally difficult to install clamps.

2. The clamping procedure is unreasonable, the clamping force is improper, and the rigidity of thin-walled parts is poor, resulting in large clamping deformation.

3. The elastic recovery of the workpiece under normal conditions will affect the dimensional accuracy and shape accuracy.

4. Unreasonable fixture design causes positioning error.

5. Cutting heat will also affect the control of the dimensional accuracy of the parts.

6. Affected by the cutting force, the workpiece is prone to deformation or vibration, resulting in low surface quality and inaccurate parts size.

7. If the cutting amount is too large, it will affect the production efficiency.

Tips for improving CNC turning of thin-walled turning machining parts

According to the problems existing in CNC turning of thin-walled parts, the selection of processing equipment, technology, fixture design, settings, etc. should be fully considered, and then the best conditions should be selected.

(1) Make the clamping force as uniform as possible

For general parts processing, the positioning and clamping of the three-jaw chuck can meet the processing needs. However, for thin-walled parts, there are high requirements for machining accuracy and geometric error. Improper positioning of the clamping will affect the quality of the parts due to the deformation of the clamping. Therefore, increasing the number of clamping points and expanding the contact area between the claw and the workpiece is an effective measure to reduce the deformation of thin-walled parts.

(2) Change the positioning and clamping design

During the turning process, the workpiece is positioned through the outer circle or inner hole, and the claw shape is used to determine the circle at 3 points. In order to reduce the influence of the circumferential (radial) clamping positioning on the dimensional accuracy of the workpiece, it can be achieved by changing the pressing method, that is, the radial clamping is changed to the end face positioning clamping. The deformation of the workpiece can be avoided, and the cutting resistance can be enhanced by increasing the end face friction.

(3) Adjust the machining parameters to reduce the influence of cutting force

We know that excessive cutting force will also cause local deformation of CNC turning thin-walled parts. The workpiece deformation caused by cutting force can be controlled by reasonable selection of cutting parameters and tool geometry parameters. High-speed machining is an effective method. The higher spindle speed not only helps to reduce the cutting force, but also can take away most of the cutting heat of the workpiece, reducing the impact of the cutting heat on the part. A reasonable tool angle can also change the cutting force state. In general, not only does the depth of cut decrease; larger tool cutting edge angles, slightly larger rake angles, and smaller nose radius also help reduce cutting forces.

(4) CNC turning thin-walled parts to increase auxiliary support

When turning thin-walled parts with high internal hole accuracy, auxiliary supports can be used to increase the rigidity of the workpiece.

CNC turning machining parts supplier — Malante

Malante is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. Our mainly products include CNC turning machining parts, Milling products, Grinding products etc. Turning Small Parts in Various Materials is hot product of CNC turning machining parts series, more details as follow:

Product NameTurning Small Parts in Various MaterialsMaterialVarious materialsApplied AreaAssembling parts for various equipmentUse RangeWide range of applicationsParameterNon-standardHeat TreatmentNoSurface TreatmentNoCooperation MarketGermany, Netherlands, Denmark, USACustomize or NotYesProduction Time4~6 weeks (not including shipping time)

Please click here to know about CNC turning machining parts.

#CNC turning machining

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malantecnc · 2 years

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Definition and structural of CNC turning machining center

CNC turning machining center is the most widely used metal cutting equipment with the largest output and complete functions in the modern machinery manufacturing industry. Next, malante will tell you the definition and structure of CNC turning machining center in this article.

Definition of CNC turning machining center

The CNC turning machining center is mainly based on turning, and the main body is a CNC lathe. The machine tool is equipped with a turret-type tool magazine or a tool magazine composed of a tool-changing manipulator and a chain-type tool magazine. The CNC system of the machine tool is mostly equipped with two or three axis servo axes, that is, X, Z, and C axes. Some high-performance CNC turning machining centers are equipped with milling power heads. In general, the structural composition of CNC turning machining center has the follow parts.

Structural composition of CNC turning machining center

Basic components of CNC turning machining center

It is the basic structure of the machining center, which consists of a bed, a column and a worktable. They mainly bear the static load of the machining center and the cutting load generated during processing, so it must have sufficient rigidity. These large pieces can be cast iron parts or welded steel structural parts, and they are the largest and heaviest parts in a machining center.

Spindle components of CNC turning machining center

It is composed of spindle box, spindle motor, spindle and spindle bearing and other parts. The start, stop and speed change of the spindle are controlled by the numerical control system, and the cutting tool is involved in the cutting motion through the tool installed on the spindle, which is the power output component of the cutting process. It is the key component of the machining center, which determines the machining accuracy and stability of the machining center.

CNC system of CNC turning machining center

The CNC part of the machining center is composed of cNc device, programmable logic controller PLC, servo drive device and operation panel.

Automatic tool changing system of CNC turning machining center

It consists of tool magazine, manipulator, drive mechanism and other components. When the tool needs to be changed, the CNC system issues an instruction, and the manipulator (or by other means) takes the tool out of the tool magazine and loads it into the spindle hole. It solves the tasks of automatic storage, selection, handling and exchange of tools between processes in the multi-process continuous processing after the workpiece is clamped once.

The tool magazine (tool head) is a device that stores all the tools used in the machining process. The tool magazine has disc type, chain type, etc., and the capacity ranges from a few to hundreds. The structure of the tool arm also has various forms according to the relative position and structure of the tool magazine and the spindle, such as: single-arm type, double-arm type, etc. Some machining centers do not use the tool arm but directly use the movement of the spindle box or tool magazine to achieve

Auxiliary device of CNC turning machining center

Including lubrication, cooling, chip removal, protection, hydraulic, pneumatic and detection systems and other parts. Although these devices do not directly participate in the cutting motion, they play a role in guaranteeing the machining efficiency, machining accuracy and reliability of the machining center, so they are also an indispensable part of the machining center.

APC Automatic Pallet Exchange System for CNC turning machining center

In order to realize the unmanned operation of one part or further shorten the non-processing time, some machining centers use multiple automatic exchange worktables to reserve workpieces. While one workpiece is installed on the worktable for processing, one or several other worktables Other parts can also be loaded and unloaded. When the processing of parts on a workbench is completed, the workbench will be automatically exchanged to process new parts, which can reduce auxiliary time and improve processing efficiency.

Supplier of products produced by CNC turning machining center - malante

Suzhou Malante is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. Malante Company will provide your company with more competitive services in the following process ranges: CNC turning products, Milling products, Grinding products etc. Spindle Machining is a hot-selling product produced by CNC turning machining center, more details are as follows:

Product Name: Spindle Machining

Material: 42CrMo4

Applied Area: Industrial equipment

Use Range: Machine spindle

Parameter: Non-standard

Heat Treatment: Quenching and tempering

Surface Treatment: No

Cooperation Market: America

Customize or Not: Yes

Production Time: 4~6 weeks (not including shipping time)

If you are interested in the products produced by CNC turning machining center, please click here.

#CNC turning machining

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malantecnc · 2 years

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Problems and advantages of using CNC turning machining lathe

CNC turning machining lathe is a kind of automatic machine tool with high technical content and high efficiency. It integrates new achievements in various fields such as computer, automation, servo drive, precision measurement and precision mechanical technology.It is a newly emerging industrial processing technology. Then problems encountered in the production process of CNC turning machining, excluding the reasons for the machinery itself, are mostly caused by irregular operation, adjustment and improper handling.Next, the editor will elaborate on the advantages of CNC turning machining lathe and the problems of CNC turning machining process and their solutions.

The advantages of using CNC turning machining lathe

1. CNC turning machining have high machining accuracy.

2. CNC turning machining lathes can perform multi-axis linkage to complete the processing of complex parts.

3. CNC turning machining lathes have a high degree of automation, which can reduce labor and costs.

4. The CNC turning machining lathe realizes mass production.

The disadvantages of using CNC turning machining lathes

1. CNC turning machining have lower requirements on the literacy of operators and higher technical requirements on maintenance personnel.

2. CNC turning machining have complex tool paths, which are not as intuitive as ordinary machine tools, and are slightly more difficult to control.

3. The lathe is inconvenient to repair and has high technical requirements;

Problems encountered in CNC turning machining and their solutions

In CNC turning machining, measures are taken according to the actual situation of the problem, such as:

1.If the size does not fit, the product is not scrapped. By modifying the tool compensation, it can be adjusted to the ideal size, and the tool compensation can be directly modified without interrupting the processing.

2. If there is an abnormality in the processing process, but it will not immediately cause serious accidents such as tool collision and product scrapping, you can press the feed hold button, then enter the manual mode, exit the tool, make necessary adjustments, and restart processing.

3. If an accident such as a knife collision has occurred, or an accident is about to occur or the product is scrapped, press the emergency stop button immediately and then deal with the problem.

CNC turning machining lathe supplier - Malante

It is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. The main products include turning products (CNC turning machining), milling products (CNC machining), grinding products (precision grinding machine processing), precision welding (welds can be processed without traces) ) and its processing.The materials involved are POM, PA, PE, UHNW and other engineering plastics; carbon steel, stainless steel, die steel, titanium alloy, copper, aluminum and other metal materials. Turning Small Parts is on product of CNC turning machining series, more details as follow:

Product Name: Turning Small Parts

Material: Various materials

Applied Area: Assembling parts for various equipment

Use Range: Wide range of applications

Parameter: Non-standard

Heat Treatment: No

Surface Treatment: No

Cooperation Market: Germany, Netherlands, Denmark, USA

Customize or Not: Yes

Production Time: 4~6 weeks (not including shipping time)

If you want to know more about CNC turning machining series, please click here.

#cnc turning machining

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malantecnc · 2 years

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What are the classifications of CNC machining centers?

What is a CNC machining center, what are the types of machining centers, what are the types of machining centers, and what are the similarities and differences between horizontal and vertical machining centers? The above questions you are concerned about, this article has a detailed introduction, please see the following.

Classification of CNC machining centers

Machining center, also known as multi-process automatic tool change CNC machine tool, is a kind of metal cutting processing equipment with the largest output and the most widely used in modern machinery manufacturing industry in the world today.

The control system of the machining center has many functions, and the machine tool uses at least three motion coordinate axes, and as many as a dozen axes. Its control function requires at least two-axis linkage control to realize linear interpolation and circular interpolation of tool movement, and most can perform five-axis linkage and six-axis linkage to complete the processing of more complex surfaces.

The machining center also has various auxiliary functions, such as machining canned cycle, automatic tool radius compensation, automatic tool length compensation, tool breakage alarm, tool life management, automatic overload overtravel protection, lead screw pitch error compensation, lead screw clearance compensation, fault compensation Automatic diagnosis, graphic display of workpiece and processing process, man-machine dialogue, online detection of workpiece, offline programming, etc., all play a positive role in improving the processing efficiency of equipment and ensuring the processing accuracy and quality of products.

The outstanding feature of the machining center is that it is equipped with a tool magazine, which stores various tools or inspection tools, which are automatically selected and replaced by the program during the processing process. This is the main difference between it and CNC milling machines and CNC boring machines.

Machining centers can be divided into four categories according to their functional characteristics:

1. Boring and milling machining center

The boring and milling machining center is mainly used for boring and milling, and is suitable for multi-process machining of special curves and surface contours of boxes, shells and various complex parts. The term "machining center" generally refers to boring and milling machining centers, while other functional machining centers should be preceded by attributives, such as turning machining centers, drilling machining centers, etc.

2. Drilling center

The drilling machining center is mainly based on drilling, and the tool magazine is mainly in the form of a turret head. It is suitable for multi-process processing such as drilling, reaming, reaming and tapping of small and medium parts.

3. Turning center

The turning machining center is mainly based on turning, and the main body is a CNC lathe. The machine tool is equipped with a turret-type tool magazine or a tool magazine composed of a tool-changing manipulator and a chain-type tool magazine. The CNC system of the machine tool is mostly equipped with two or three axis servo axes, that is, X, Z, and C axes. Some high-performance turning centers are equipped with milling power heads.

4. Compound machining center

A machining center that can complete multi-process machining such as turning, milling, boring, and drilling on one device is called a composite machining center, which can replace multiple machine tools to achieve multi-process machining. This method can not only reduce loading and unloading time, improve production efficiency, but also ensure and improve shape and position accuracy. The compound machining center refers to the five-sided compound machining center, and its spindle head can be automatically rotated for vertical and horizontal machining.

According to the number of motion coordinates and the number of coordinates controlled at the same time, the machining center can be divided into three-axis two-linkage, three-axis three-linkage, four-axis three-linkage, five-axis four-linkage, six-axis five-linkage, multi-axis linkage linear + rotary + Spindle swing, etc. Three-axis and four-axis refer to the number of motion coordinates that the machining center has, and linkage refers to the number of coordinates that the control system can control the motion at the same time, so as to realize the position and speed control of the tool relative to the workpiece.

Since we have had a preliminary understanding of CNC machining classification. One company we have to mention is Malante. Suzhou Malante Precision Machinery Co., Ltd. established in 2011, is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. The company's production base is located in the well-equipped Suzhou Wuzhong Economic Development Zone-Hainde High-tech Industrial Park, has passed ISO9001: 2015 quality management system certification, weapons and equipment quality management system certification.

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malantecnc · 2 years

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What is precision cnc machining process?

CNC is composed of mechanical equipment and numerical control system, which is used to carry out precision cnc machining process. Then what is precision cnc machining process?

When CNC machining, when selecting, generally can be considered in the following order

(1) Contents that cannot be processed by general-purpose machine tools should be selected as the preferred content;

(2) General-purpose machine tools are difficult to process and the quality is difficult to guarantee should be selected as the key content;

(3) The content of low processing efficiency of general-purpose machine tools and high labor intensity of manual operation of workers can be selected when CNC machine tools still have abundant processing capacity.

Content not suitable for precision cnc machining

After the processing content adopts CNC processing, the product quality, production efficiency and comprehensive benefits will be significantly improved. In contrast, some of the following should not be selected for CNC machining:

(1) It takes a long time to adjust the machine. If the rough datum of the blank is used to locate and process the first fine datum, it is necessary to use special tooling to coordinate the content;

(2) The processing parts are scattered, and it is necessary to install and set the origin multiple times. At this time, it is very troublesome to use CNC machining, and the effect is not obvious, and general machine tools can be arranged for supplementary processing;

(3) Profiles processed according to some specific manufacturing basis (such as templates, etc.).

(4) Analysis of NC machining process

Combining the possibilities and convenience of programming presents some major elements that must be analyzed and reviewed.

Dimensions should be in line with the characteristics of precision cnc machining

In NC programming, the dimensions and positions of all points, lines and surfaces are based on the programming origin. Therefore, it is best to give the coordinate dimensions directly on the part drawing, or try to quote the dimensions with the same datum.

Conditions of geometric elements should be complete and accurate

In programming, programmers must fully grasp the geometric element parameters that constitute the part outline and the relationship between the geometric elements. Because all geometric elements of the part contour need to be defined during automatic programming, and the coordinates of each node need to be calculated during manual programming, no matter which point is unclear or uncertain, programming cannot be performed.

Reliable positioning reference

In CNC machining, the machining procedures are often concentrated, and it is very important to locate with the same datum. Therefore, it is often necessary to set some auxiliary datums, or add some process bosses to the blank.

Uniform Geometry Types and Dimensions

The shape and inner cavity of the parts should preferably adopt a unified geometric type and size, which can reduce the number of tool changes, and may also use control programs or special programs to shorten the program length.

The difference between CNC machining process route design and general machine tool machining process route design is that it often does not refer to the entire process from blank to finished product, but only a specific description of the process of several CNC machining processes. Therefore, in the design of the process route, it must be noted that since the CNC machining process is generally interspersed in the entire process of part processing, it must be well connected with other processing processes.

Since we have had a preliminary understanding of precision cnc machining process. One company we have to mention is Malante. Suzhou Malante Precision Machinery Co., Ltd. established in 2011, is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. The company's production base is located in the well-equipped Suzhou Wuzhong Economic Development Zone-Hainde High-tech Industrial Park, has passed ISO9001: 2015 quality management system certification, weapons and equipment quality management system certification.

Related News of Precision CNC Machining

Why is the cnc machining center precision poor?

Common cnc machining high precision parts – Malante

How to test the precision of CNC aluminum profile machining

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malantecnc · 2 years

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How to use a cnc machine?

Automatic processing according to the program, complex shape of parts, high processing precision and stable quality are the main difference between CNC machine tools and ordinary machine tools in production practice, and also the biggest advantage of CNC machining. And how to give full play to these advantages, CNC machine tool operators must have a deep understanding of some key points of CNC machining in addition to the programming knowledge and operating skills that must be mastered.

How to use a cnc machine?

CNC machining steps

1. Analyze the parts diagram

The first is to correctly analyze the part drawing, determine the processing part of the part, and thoroughly understand the technical requirements of the drawing. Normatively speaking, it should be carried out in strict accordance with the processing technology requirements, and the CNC machining of each process should be carried out in strict accordance with the process division.

2. Select CNC machine tools

This is the job of the crafting staff. According to the shape of the part and the content and scope of processing, the type of machine tool is determined.

3. Clamping method of workpiece

The clamping method of the workpiece directly affects the processing accuracy and processing efficiency of the product, and must be carefully considered. "Pass, help, and lead" is the fine tradition of "master leads apprentices", more exchanges, more communication, in a conscientious attitude, correctly clamping the workpiece. There are many factors to consider in the clamping during milling: The first is positioning. The positioning of the workpiece must first consider the correctness of the positioning.

Your positioning must meet the accuracy requirements, and also consider the convenience and inconvenience of the workpiece installation, which is not conducive to clamping. Emphasize one point, the difference between positioning and clamping. Correct positioning, high positioning accuracy, and no over-positioning, this is the function of positioning; firm clamping, this is the proper function of clamping. These are two concepts that cannot be confused. Of course, positioning and clamping are related and inseparable. Positioning should be easy and clamping should be convenient.

Furthermore, positioning and clamping cannot interfere with the tool. This is also a practical problem. Therefore, when positioning the workpiece, it is necessary to consider the overall situation. The more comprehensive the thinking, the fewer mistakes.

Another problem is to consider the effect of cutting force. On the premise that the cutting force can be tolerated, the more parts that can be machined at one time, the better, which is very important to improve production efficiency in actual operation.

4. The processing technology is determined

This stage is mainly determined by the process planners to determine the processing sequence and steps. Because it involves the cooperation with other parts, the accuracy guarantee of different processing methods, etc., the assembly requirements and so on should be considered.

5. Selection of tools

This again involves a practical problem. The selection of tools should meet the requirements of processing quality and efficiency, that is to say, tools with large diameters can be used as much as possible, especially rough machining, which can be completed in the shortest time possible within the scope of capacity. For example, in order to improve efficiency, roughing and semi-finishing of large circular holes on the workpiece are carried out with rough boring tools and semi-finishing boring tools, and end mills are not recommended for travel.

6. Programming

Set the coordinate system, calculate the coordinate points, and compile the machining program. Carefulness is important.

7. Processing operation

After the programming is completed, a trial run of the program should be carried out before processing to check whether the program is correct, and then operate the machine tool for processing. In fact, the most direct and effective inspection method is the test cutting inspection, but in order not to waste too much material, the test cutting can be carried out after the empty pass is correct. During the test cutting, the tool can be raised and the tool radius compensation value can be enlarged. Because the work before this can be said to be all preparatory work, all to prepare for this step. Keep in mind the saying "An untested program cannot directly machine a part".

Dos and don'ts in cnc machining in the process of CNC machining

1. The first inspection. The first is that the operator himself has to pass the inspection, and then go to the inspection. Whether it is the first processing or the repeated processing of batch products, the first inspection must be done. Don't batch processing if you think there is no problem. If you are not sure, you should ask others to help you check. Check each other, the effect will be better.

2. Check whether the tool is worn at any time during the processing. If it is worn, it should be replaced and repaired in time; during the processing, regularly check whether the tooling is loose, and if it is loose, it should be adjusted in time.

3. The chips should be cleaned at any time during the processing. On the one hand, because the chips will dissipate heat to the machine tool and the workpiece, causing thermal deformation of the machine tool and the workpiece; Chip removal is very important for CNC machining.

4. The operator must establish a new quality awareness, take care of measuring tools and inspection tools, and learn how to use the measuring tools and inspection tools correctly.

Cooperation

1. Cooperation between programmers and operators

There is a problem in the selection of coordinate origin and the selection of workpiece placement during programming. Generally speaking, the coordinate origin should be selected according to the requirements of the process and drawings. For example, try to keep the process benchmark consistent with the design benchmark, but this is not necessarily the best choice, because the operator must also consider the tire mold space when processing. , processing habits, processing convenience and other issues. Therefore, it is necessary to strengthen communication between the operator and the programmer.

Moreover, for the situation that the same workpiece is processed by different machine tools, it is necessary to strengthen the cooperation between the programmer and the operator, and the processing program often varies from machine tool to machine tool.

Machining tools should be determined and prepared in advance, which requires the communication and cooperation of process, supply and tool warehouse. Preparing all the resources required for processing in advance will ensure the smooth implementation of production.

2. Cooperation between operators of the same machine tool

Adhering to the shift record is an effective means to ensure good cooperation between different operators of the same machine tool. It is entirely possible for the next shift to manifest because of the events that occurred on the previous shift that affected processing. More communication and cooperation between different shifts can avoid some unnecessary mistakes.

3. Cooperation between different machine tool operators

The same workpiece is processed by different machine tools successively, and the operators should cooperate more. Including the use of fetal membranes, the use of processing procedures, some precautions during processing, and so on.

4. Maintenance

CNC machine tools are used well and need to be "raised" well. Careful and in-place maintenance is a powerful guarantee for CNC machine tools to remain in a "good" state.

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malantecnc · 2 years

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Where is CNC machining used?

CNC machining technology has now been a standard for measuring the technology level of a country. This article would tell features and application of cnc machining.

The background of CNC machining technology

CNC machining technology originated from the needs of the aviation industry. In the late 1940s, a helicopter company in the United States proposed it. The initial idea of CNC machining technology tools, in 1952, the Massachusetts Institute of Technology developed a three-coordinate CNC milling machine. In the mid-1950s this CNC milling machine was used to machine aircraft parts.

In the 1960s, the CNC system and programming work became more and more mature and perfect, and CNC machine tools have been used in various industrial sectors, but the aerospace industry has always been the largest user of CNC machine tools. Some large aerospace factories are equipped with hundreds of CNC machines, mainly cutting machines. The CNC-machined parts include integral wall panels, girders, skins, bulkheads, propellers of aircraft and rockets, mold cavities of aero-engine casings, shafts, discs, and blades, and special cavity surfaces of liquid rocket engine combustion chambers, etc.

In the early stage of the development of CNC machine tools, the CNC machine tools with continuous trajectory were mainly based on continuous trajectory control. Continuous trajectory control, also known as contour control, requires the tool to move according to a specified trajectory relative to the part. Later, vigorously develop point-controlled CNC machine tools. Point control means that the tool moves from one point to another, as long as it can reach the target accurately at the end, regardless of the moving route.

The significance and characteristics of CNC machining technology

At the beginning of CNC machine tools, aircraft parts with complex profiles were selected as processing objects, which was the key to solving the problem that ordinary processing methods were difficult to solve. The biggest feature of CNC machining is to use punched tape (or tape) to control the machine tool for automatic machining. Because aircraft, rockets and engine parts have different characteristics: zero, large component size and complex profile of aircraft and rockets; zero engine, small component size and high precision. Therefore, the CNC machine tools used in aircraft, rocket manufacturing and engine manufacturing departments are different. In aircraft and rocket manufacturing, large-scale CNC milling machines with continuous control are mainly used, while in engine manufacturing, both continuous-controlled CNC machine tools and point-controlled CNC machine tools (such as CNC drilling machines, CNC boring machines, machining centers, etc.) are used. .

Process concentration

CNC machine tools generally have tool holders and tool magazines that can automatically change tools. The tool changing process is automatically controlled by the program, so the process is relatively concentrated. Process concentration brings huge economic benefits:

⑴Reduce the floor space of the machine tool and save the workshop.

(2)Reduce or no intermediate links (such as intermediate testing of semi-finished products, temporary storage and handling, etc.), which saves both time and manpower.

Automation

When CNC machine tools are processed, there is no need to manually control the tool, and the degree of automation is high. The benefits are obvious.

(1) The requirements for operators are reduced:

A senior worker of an ordinary machine tool cannot be trained in a short time, while a CNC worker who does not need programming takes a very short training time (for example, a CNC lathe worker needs a week, and a simple machining program can be written). Moreover, the parts processed by CNC workers on CNC machine tools have higher precision and save time than those processed by ordinary workers on traditional machine tools.

(2) Reduce the labor intensity of workers: CNC workers are excluded from the processing process most of the time during the processing process, which is very labor-saving.

(3) Stable product quality: The processing automation of CNC machine tools eliminates human errors such as fatigue, carelessness, and estimation of workers on ordinary machine tools, and improves product consistency.

⑷ High processing efficiency: The automatic tool change of CNC machine tools makes the processing process compact and improves labor productivity.

High flexibility

Traditional general-purpose machine tools have good flexibility but low efficiency; while traditional special machines have high efficiency, but poor adaptability to parts, high rigidity and poor flexibility, it is difficult to adapt to the fierce competition in the market economy. Products are frequently modified. As long as the program is changed, new parts can be processed on the CNC machine tool, and the operation can be automated, with good flexibility and high efficiency, so the cnc machining technology can well adapt to market competition.

Strong Ability

Machine tools can accurately machine various contours, and some contours cannot be machined on ordinary machine tools.

CNC machining technology are especially suitable for the following occasions:

1. Parts that are not allowed to be scrapped.

2. Development of new products.

3. Processing of urgently needed parts.

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Why is the cnc machining center precision poor?

When we are using cnc machining center to processing some materials, we can encounter some questions concerning cnc machining center precision. One question we may ask is why is the cnc machining center precision poor? This article may give you an answer.

Factors influence cnc machining center precision

Factor influence cnc machining center precision: Dimensional changes caused by the system are not stable

Causes of failure: unreasonable setting of cnc machining center system parameters; unstable working voltage; system is disturbed by the outside, causing the system to lose synchronization; increased capacitance, but the impedance between the system and the driver does not match, resulting in loss of useful signals; Improper signal transmission; system damaged or internal.

Solution: The speed and acceleration time are too large, whether the spindle speed and cutting speed are reasonable, and whether the operator's parameter modification causes the system performance to change; capacitor; select the appropriate capacitor type; check whether the signal connection between the system and the driver is shielded and the connection is reliable.

Factor influence cnc machining center precision: Workpiece produces taper size

Causes of failure: The level of the cnc machining center machine tool is not adjusted well, one is high and the other is low, and the placement is unstable; when turning the long axis, the feed is relatively hard, and the cnc machining center tool eats the knife deeper, resulting in the phenomenon of cutting knife; the tailstock thimble is not concentric with the spindle.

Solution: adjust the level of the machine with a spirit level, lay a solid foundation, and fix the machine to improve its toughness; choose a reasonable process and appropriate cutting feed to avoid the tool being forced to make the tool; adjust the tailstock.

Factor influence cnc machining center precision: The drive phase lamp is normal, and the size of the workpiece is large or small.

Cause of failure: long-term high-speed operation of the cnc machining center machine tool frame leads to wear of the lead screw and bearing; the repeated positioning accuracy of the tool holder is deviated during long-term use; the trolley can accurately return to the processing starting point every time, but the size of the workpiece will still change. This phenomenon is generally caused by the spindle. The high-speed rotation of the spindle causes serious wear of the bearing, resulting in changes in machining dimensions.

Solution: use a dial indicator against the bottom of the tool holder, edit the fixed cycle program through the system, check the repeatability of the trolley, adjust the screw clearance, and replace the bearing; use a dial indicator to check the repeatability of the tool holder. Adjust the machine or replace the tool holder; use a dial indicator to check that the workpiece is accurately returned to the program starting point. If possible, repair the spindle and replace the bearings.

Factor influence cnc machining center precision: The workpiece size differs from the actual size by a few millimeters, or there is a large change in one of the axes.

Causes of failure: The fast positioning speed is too fast, and the driver and motor have no response; after long-term friction loss, the mechanical lead screw and the bearing are stuck too tightly; after the tool change, the tool rest is too loose, and the locking is not tight; the editing program is wrong, the head and tail are not Reaction or no cancellation tool completed; electronic gear ratio or step angle of the system is set incorrectly.

Solution: If the fast positioning speed of cnc machining center is too fast, adjust the speed appropriately. Cutting acceleration and deceleration and time will make the drive and motor work normally at the rated operating frequency. When the cnc machining center machine is worn out, the trolley and screw crane bearings will be stuck too tightly. The repair must be re-adjusted. If the tool holder is too loose after the tool change, check whether the reversing time of the tool holder is satisfied, check whether the worm gear in the tool holder is worn, whether the gap is too large, whether the installation is too loose, etc. If it is caused by the program, the program must be modified, according to the requirements of the workpiece drawing, select a reasonable processing technology, and write the correct program according to the instructions in the manual.

Suzhou Malante Precision Machinery Co., Ltd. established in 2011, is a production-oriented enterprise specializing in the processing and assembly of mechanical parts. The company's production base is located in the well-equipped Suzhou Wuzhong Economic Development Zone-Hainde High-tech Industrial Park, has passed ISO9001: 2015 quality management system certification, weapons and equipment quality management system certification.

Related News

How to test the precision of CNC aluminum profile machining

Daily operation instructions for precision cnc machining

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Advantages of CNC Aluminum Profiles Machining System and Equipment

There are many equipment for processing aluminum profiles on the market. Its main function is to cut, drill, and tap aluminum profiles. Today, we mainly talk about the three most common aluminum profiles machining equipment for processing aluminum profiles.

1. ALUMINUM PROFILE CUTTING MACHINE

The cutting aluminum profiles machining equipment is used to cut aluminum profiles. The current aluminum profiles are generally long in length. We need to cut the profiles into customized sizes. The cutting machines include double-head cutting and laser cutting machines. The cutting loss of ordinary cutting machines is +-0.5mm, and the precision of laser cutting machines is relatively high.

2. ALUMINUM PROFILE TAPPING MACHINE

Tapping aluminum profiles machining equipment is one of the most widely used internal threading machine tools. Tapping machine can be divided into: desktop tapping machine - semi-automatic desktop tapping machine, vertical tapping machine, horizontal tapping machine.

3. ALUMINUM PROFILE PUNCHING MACHINE - OPEN TILTING PRESS PUNCHING MACHINE

When we assemble the frame, some aluminum profiles need to be drilled, and a punch is required at this time. Punching machines can not only drill holes, but also bend sheets or profiles.

A completed aluminum profile processing center not only has the above three basic equipment, but also table drilling machines, milling and drilling machines, floor grinders and so on.

We know the characteristics of traditional machining. Generally, it is processed by manual operation of ordinary machine tools. During processing, manual operation is required. Shake the mechanical handle to make the tool cut metal to complete the processing target. During operation, it is necessary to measure the machining hole position of the product with a caliper and other tools by eyes, and the machining accuracy of the product is not high. Especially when the product has many holes and high precision, it is difficult to meet the standard.

CNC aluminum machining system is different, it uses a kind of programming to control the automatic machine tool. The programming control system can logically process and control the program specified by the coding and symbol instructions, decode it through the computer, cut the aluminum profile product through the tool according to the designed action, and process the blank into semi-finished parts. The products processed by the CNC machining center have a high precision of 0.01 mm. Not only high precision, but also free programming to remove unnecessary parts, drilling, tapping, milling, cutting, etc., can be completed in one step.

Because the advantages of CNC aluminum machining system are particularly obvious, more companies favor the products processed by CNC machining centers to be used in mechanical equipment. Especially when making a small amount of samples, when the precision of the product is required and the hole position is asymmetric, CNC machining can solve the urgent need.

WHAT SYSTEM IS GOOD FOR CNC ALUMINUM PROFILE MACHINING CENTER?

At this stage, the Japanese CNC aluminum machining system are widely used in the sales market: Mitsubishi, Fanuc. Relatively speaking, Fanako is better than Mitsubishi, but Mitsubishi has developed rapidly in recent years, and its sales market is also expanding.

The CNC system is the human brain of the CNC aluminum profile machining center, which basically manipulates all the postures and personal behaviors of the CNC aluminum profile machining center to manufacture product workpieces and maintain machinery and equipment. Some people say that, if you can choose a good and smart CNC system, you can choose a good machining center. You can take this opportunity to let us summarize which system software is generally used in machining centers

WHICH SYSTEM IS GENERALLY USED FOR CNC ALUMINUM PROFILE MACHINING CENTERS

1. Japanese CNC system: Mitsubishi, Fanuc. Relatively speaking, Fanuc is better than Mitsubishi. Fanuc has complete functions, fast operation speed, very simple operation and more powerful functions.

2. As far as many of the above system applications are concerned, they are on a par. Siemens and Fanuc are used in all walks of life, such as Fanuc vehicles and intelligent robots. Siemens' system software is used in airline machinery and equipment, high-speed rail, and magnetic suspension. At this stage, the widely used system software includes Japan's Mitsubishi and Fanuc. Japan's Mitsubishi is more cost-effective, while Fanuc is mostly used in some high-end machines and fast machines.

Suzhou Malante Precision Machinery Co., Ltd. established in 2011, is a aluminum alloy metal parts supplier and custom made steel parts dealer specializing in the processing and assembly of mechanical parts. The company's production base is located in the well-equipped Suzhou Wuzhong Economic Development Zone-Hainde High-tech Industrial Park, has passed ISO9001: 2015 quality management system certification, weapons and equipment quality management system certification.

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How to test the precision of CNC aluminum profile machining

The positioning accuracy of the aluminum profile machining center refers to the aluminum profile machining precision that can be achieved by the movement of each coordinate axis of the machine tool under the control of the numerical control device, which can also be understood as the movement accuracy of the machine tool. The movement of the machine tool is realized by the numerical control program instructions, so the aluminum profile machining precision depends on the numerical control system and the mechanical transmission error.

The movement of each moving part of the machine tool is completed under the control of the numerical control device, and the accuracy that each moving part can achieve under the control of program instructions directly reflects the accuracy that the machined parts can achieve. Therefore, the positioning accuracy is a very important test. content.

HOW TO TEST THE PRECISION OF CNC?

1. LINEAR MOTION POSITIONING ACCURACY DETECTION

The positioning accuracy of linear motion is generally carried out under no-load conditions of the machine tool and the worktable. According to the national standards and the provisions of the International Organization for Standardization (ISO standard), the detection of CNC machine tools should be based on laser measurement. In the absence of a laser interferometer, a standard scale can also be used for comparison measurements with an optical reading microscope for ordinary users. However, the accuracy of the measuring instrument must be 1 to 2 grades higher than the accuracy of the measurement.

In order to reflect all the errors in multiple positioning, the ISO standard stipulates that each positioning point calculates the average value of five measurement data and the positioning point dispersion band formed by the dispersion-3 dispersion band.

2. LINEAR MOTION REPEAT POSITIONING ACCURACY DETECTION

The instruments used for testing are the same as those used for testing positioning accuracy. The general detection method is to measure at any three positions close to the midpoint and both ends of each coordinate stroke, each position is positioned with rapid movement, and the positioning is repeated 7 times under the same conditions, the value of the stop position is measured, and the maximum difference between the readings is obtained. . One-half of the largest difference in the three positions is attached with a positive and negative sign, as the repeated positioning accuracy of the coordinate, which is the most basic index reflecting the stability of the axis motion accuracy.

3. ORIGIN RETURN ACCURACY DETECTION OF LINEAR MOTION

The origin return accuracy is essentially the repeated positioning accuracy of a special point on the coordinate axis, so its detection method is completely the same as the repeated positioning accuracy.

4. REVERSE ERROR DETECTION OF LINEAR MOTION

The reverse error of linear motion, also known as the loss of momentum, includes the reverse dead zone of the drive parts (such as servo motors, servo hydraulic motors and stepper motors) on the feed transmission chain of the coordinate axis, and each mechanical motion transmission pair. The comprehensive reflection of errors such as backlash and elastic deformation. The larger the error, the lower the positioning accuracy and repeated positioning accuracy.

The detection method of the reverse error is to move a distance in the forward or reverse direction in advance within the stroke of the measured coordinate axis and use this stop position as the reference, and then give a certain movement command value in the same direction to move it for a certain distance. Then move the same distance in the opposite direction, and measure the difference between the stop position and the reference position. Perform multiple measurements (usually 7 times) at three positions near the midpoint and both ends of the stroke, obtain the average value of each position, and take the maximum value of the obtained average value as the reverse error value.

5. POSITIONING ACCURACY DETECTION OF ROTARY TABLE

Measurement tools include standard turntable, angle polyhedron, circular grating and collimator (collimator), etc., which can be selected according to specific conditions. The measurement method is to turn the worktable forward (or reversely) at an angle and stop, lock, and position it, take this position as the benchmark, and then quickly turn the worktable in the same direction, lock and position it every 30 degrees, and measure. The forward rotation and reverse rotation are each measured for one cycle, and the maximum value of the difference between the actual rotation angle of each positioning position and the theoretical value (command value) is the indexing error.

If it is a CNC rotary table, every 30 points should be used as a target position. For each target position, fast positioning of aluminum profile machining is performed 7 times from the forward and reverse directions. The difference between the actual achieved position and the target position is the position deviation, and then press GB10931- 89 The method specified in "Assessment Method of Position Accuracy of Numerically Controlled Machine Tools" calculates the average position deviation and standard deviation, the difference between the maximum value of all average position deviation and standard deviation and the sum of the minimum value of all average position deviation and standard deviation. , is the positioning accuracy error of the aluminum profile machining.

Considering the actual use requirements of dry-type transformers, it is generally necessary to focus on the measurement of several right-angle equal points such as 0, 90, 180, and 270, and the accuracy of these points is required to be one level higher than other angular positions.

6. REPEATED INDEXING ACCURACY DETECTION OF ROTARY TABLE

The measurement method is to repeat the positioning three times at any three positions within one week of the rotary table, and perform detection under the forward and reverse rotations respectively. The maximum indexing accuracy of the difference between all readings and the theoretical value of the corresponding position. If it is a CNC rotary table, take one measurement point every 30 as the target position, and perform 5 rapid positioning of each target position from the positive and negative directions respectively, and measure the difference between the actual position and the target position. That is, the position deviation, and then calculate the standard deviation according to the method specified in GB10931-89. The standard deviation of each measurement point is 6 times the maximum value, which is the repeated indexing accuracy of the CNC rotary table.

7. ORIGIN RETURN ACCURACY DETECTION OF ROTARY TABLE

The measurement method is to perform a return-to-origin from 7 arbitrary positions, measure the stop position, and use the maximum difference read out as the return-to-origin accuracy.

It should be pointed out that the detection of the existing positioning accuracy is measured under the condition of fast and positioning. For some CNC mechanical parts machining tools with a poor feed system, different positioning accuracy values will be obtained when positioning with different feed speeds. In addition, the measurement results of the positioning accuracy are related to the ambient temperature and the working state of the coordinate axis.

At present, most CNC machining tools use a semi-closed loop system, and most of the position detection components are installed on the drive motor, which produces an error of 0.01~0.02mm within a 1m stroke. Not surprising. This is an error caused by thermal elongation, and some machine tools use pre-tensioning (preloading) methods to reduce the impact.

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malantecnc · 2 years

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Problems to be solved of domestic CNC machine tool industry

Domestic CNC machine tool industry occupies an important position in the world machine tool industry system and the global machine tool market, but it is still only a big machine tool country rather than a machine tool power country. The industrial competitiveness of high-end CNC machine tools.

1. INTERNATIONAL COMPETITIVENESS OF CNC MACHINING NEEDS TO BE IMPROVED

According to the information released by the China Machine Tool Industry Association, according to China Customs data, the import and export of domestic CNC machining industry in the first quarter of 2021 showed an overall trend of significant growth. .

In the first quarter of 2021, the import and export of machine tools maintained the surplus since June 2019. The import of machine tools and tools was 3.28 billion US dollars, and the export was 4.03 billion US dollars, with a surplus of 750 million US dollars.

In terms of imports, in the first quarter of 2021, imports generally showed a recovery growth trend. The import value increased by 22.9% year-on-year, and compared with the first quarter of 2019, it decreased by 3.3%. Among them, the import value of metal processing machine tools was 1.68 billion US dollars, a year-on-year increase of 28.9%. Among them, the import value of metal cutting machine tools was 1.37 billion US dollars, a year-on-year increase of 27.7%;

The import value of metal forming machine tools was 310 million US dollars, a year-on-year increase of 34.2%. In the first quarter, the import value of cutting tools was US$430 million, a year-on-year increase of 29.6%; the import value of abrasives was US$180 million, a year-on-year increase of 30.8%; the import value of machine tool functional components increased the most, reaching US$470 million, a year-on-year increase of 63.7%.

From the perspective of import sources, the top three import sources from January to March 2021 are: Japan US$1.09 billion, a year-on-year increase of 50.9%; Germany US$670 million, a year-on-year increase of 7.1%; China Taiwan US$430 million, a year-on-year increase 68.5%.

In terms of exports, the first quarter of 2021 generally showed a trend of substantial growth. The export value increased by 37.3% year-on-year, and compared with the first quarter of 2019, an increase of 22.8%. Among them, the export value of metal processing machine tools was 1.12 billion US dollars, a year-on-year increase of 40.8%. Among them, the export value of metal cutting machine tools was 770 million US dollars, a year-on-year increase of 43.0%; the export value of metal forming machine tools was 360 million US dollars, a year-on-year increase of 36.4%. In the first quarter, the export value of cutting tools was 830 million US dollars, a year-on-year increase of 49.6%; the export value of abrasives was 820 million US dollars, a year-on-year increase of 56.5%.

From the perspective of export destination, from January to March 2021, the top three export destinations are: the United States with US$510 million, a year-on-year increase of 47.2%; Vietnam with US$310 million, a year-on-year increase of 57.1%; India with US$300 million, a year-on-year increase of 46.2% %.

It can be seen from the above data that my country's machine tools are mainly exported to developing countries. Although the export value to the United States is relatively high, the products are mainly ordinary CNC machine tools, and most of the customers are small and medium-sized enterprises or individuals in the United States. The international market competitiveness of my country's high-end CNC machine tools is still less than that of the United States, Japan, Germany and other machine tool powerhouses.

2. THE DEVELOPMENT OF KEY COMPONENTS IN THE DOMESTIC MID-TO-HIGH END CNC MACHINING NEEDS TO BE STRENGTHENED URGENTLY

Still citing the above data, the import growth rate of my country's high-end machine tool functional components is the highest among all imported products. Domestic functional components cannot meet the host supporting requirements in terms of variety, quantity and grade, and the market share of domestic mid-range supporting functional components still needs to be improved; high-end products rely on imports to a large extent. The competitiveness of the supporting functional components industry needs to be rapidly improved.

3. PROCESS VERIFICATION AND DEMONSTRATION APPLICATIONS NEED TO BE STRENGTHENED

From prototype development to actual production application, CNC machine tools need to undergo a large number of tests and verifications in terms of manufacturing process, reliability and accuracy retention, engineering, etc., and continue to improve. At the same time, users need to provide process verification. The process verification and application demonstration are also a shortcoming in the development of domestic CNC machining industry.

4. THE PRESSURE OF INDUSTRIAL DEVELOPMENT REMAINS HIGH

Global machine tool production and consumption continue to shrink. According to data released by Gardner in the United States, from 2019 to 2020, global machine tool production declined for two consecutive years. Although it was affected by the raging global epidemic during the period, the general trend has not changed in the past 10 years. At the same time, the domestic CNC machining industry’s demand for imported machine tools and parts has not declined but has risen, which shows that the domestic machine tool industry is difficult to meet the high-end needs of enterprises. Development breakthrough.

To sum up, as the domestic CNC machining industry chain as a national strategic industry, there should be an industrial platform to invest in the development and establish long-term and stable strategic partnerships with CNC machine tools and basic manufacturing equipment mainframes, CNC systems and functional components and other industrial chain related units. , establish a long-term supporting relationship between CNC systems, functional components and machine tool companies, and create a complete supporting industry chain for CNC machine tools and CNC turning machining components.

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malantecnc · 2 years

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Merits of Investment in CNC Machining Industry Chain

After analyzing the specific situation of the CNC machine tool industry chain, let's talk about the value of the industrial platform investing in the CNC machine tool industry chain.

MERITS OF CNC MACHINING AND MERITS OF INVESTMENT IN CNC INDUSTRY CHAIN

First of all, the CNC machining industry chain has strategic industrial characteristics. CNC machine tools are the "workhorse" of the equipment manufacturing industry. The technical level and product quality of a country's machine tool industry are important indicators to measure the development level of its equipment manufacturing industry.

According to the requirements of the "Made in China" 2025 plan, CNC machine tools and basic manufacturing equipment industries are listed as one of the strategic areas of competition in China's manufacturing industry. The main reason is its international division of labor for a country's manufacturing industry, especially equipment manufacturing. The position in the center has an "anchor" effect: only with a solid basic manufacturing capacity, it is possible to produce advanced equipment products, thereby realizing the production of high-value products.

Secondly, the CNC machining industry chain is an industrial pillar supporting national defense and industrial security. CNC machine tools have a strategic position beyond economic value for the manufacture of advanced national defense equipment. The materials, structures, and processing techniques of many key components in modern defense equipment have certain particularities and processing difficulties. The requirements cannot be met with ordinary processing equipment and traditional processing techniques. Multi-axis linkage, high-speed, and high-precision CNC machine tools must be used. to meet the processing requirements.

At present, developed countries in the West still impose technical blockades and restrictions on my country. In terms of industrial safety, with the acceleration of domestic manufacturing upgrading, the high-tech and high-value-added industries represented by equipment manufacturing industry have intensified competition with developed countries. Construction machinery, electrical machinery, and transportation equipment are entering the international high-end market.

However, there is still a certain gap in domestic machine tool products in terms of machining accuracy, reliability, efficiency, automation, intelligence and environmental protection, which leads to the weak overall competitiveness of the industry. Therefore, increasing the efforts to update the CNC machine tool industry can ensure that my country's high-end manufacturing industry will lead the world in the future.

Third, the CNC machining industry chain is an important support for the transformation and upgrading of downstream customers. At present, the demand structure of downstream customers in the industry is showing a high-end development trend. Many industries will undergo large-scale and in-depth structural adjustment and upgrading, and there is an urgent demand for high-quality and high-tech CNC machine tools.

All in all, the market demand for medium and high-end CNC machine tools is increasing rapidly, and customers need more high-speed, high-precision, compound, flexible, multi-axis linkage, intelligent, high-rigidity, and high-power CNC machine tools. For example, the automobile industry is showing the development trend of producing large quantities, multiple varieties, and rapidly updating models, and the development of new energy vehicles is accelerating, which requires the continuous development of processing equipment in the direction of precision, efficiency and intelligence.

In the aerospace industry, with the sharp increase in the demand for civil aircraft and the cross-generational development of military aircraft, rockets, and missiles, the new generation of aircraft is moving towards lightweight, high reliability, long life, high stealth, and multiple configurations. , rapid response and low-cost manufacturing, the new generation of technology urgently needs more advanced processing equipment to carry, and aviation manufacturing equipment is developing in the direction of automation, flexibility, digitization and intelligence.

Finally, the CNC machining industry chain is the strategic high point of the new technology revolution. The elements of intelligent manufacturing, milling accurate metal machining, energy internet, and new-generation information technology innovation included in future technological development will provide traction for technological breakthroughs in my country's high-end equipment manufacturing, and also provide a huge market for the equipment manufacturing industry, especially the high-end equipment manufacturing industry.

The parts manufacturing industry is an important combination of information technology and industrial technology. The industry itself has strong sensitivity to new technologies and is also the main scenario for the application of new technologies. Driven by the wave of new technology revolution, the trend of integration and innovation in the CNC machining industry chain is obvious. The world's leading CNC machine tool companies are accelerating the integration of new technologies into the machine tool industry, and the integration and application of networked and intelligent technologies to machine tool products. The industry will inevitably need more mid-to-upstream machine tool parts companies and complete machine companies to accelerate the integration and application of new technologies in CNC machine tools.

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Upstream and downstream of cnc high-end manufacturing industry

On July 16, a spokesman for the Ministry of Industry and Information Technology said: At present, the Ministry of Industry and Information Technology is stepping up the preparation of my country's "14th Five-Year Plan" and medium and long-term industrial and information development plans, which will be released in the second half of this year. These plans will focus on my country's second centenary goal to accelerate the development of a new type of high-end manufacturing, and make comprehensive arrangements for strengthening the goals, approaches and key tasks of strengthening "manufacturing power" and "network power".

The reason why I state a piece of market news at the beginning of the chapter is mainly to pave the way for the protagonist introduced in this article. If my country wants to become a "manufacturing power", it must make the key basic industry of new industrialization - "industrial mother machine: CNC machine tool" industry leading in the world.

Machine tool: a machine that processes blanks or workpieces of metal or other materials to achieve the required geometric shape, dimensional accuracy and surface quality of the workpiece. In layman's terms, a machine tool is a machine that manufactures machines, and it is also a machine that can manufacture the machine tool itself, so the machine tool is called the "industrial mother machine".

CNC machine tool: It is the abbreviation of "digital control machine tool". It is a supporting program control system on the machine tool. Each supporting system of the linked machine tool sends out specified control signals according to the set control logic to let the machine tool perform specified actions and automatically process the specified workpiece shape. and size. CNC machine tools effectively solve the complex, precise, multi-variety and small-batch manufacturing problems of industrial components, and represent the development direction of modern machine tools.

"Made in China "2025" lists CNC machine tools and basic manufacturing equipment as "strategic fields of competition to accelerate breakthroughs". The level of division of labor and the right to speak. It can be seen that the CNC machine tool industry chain is a high-quality investment direction for the industry platform.

OVERVIEW OF THE INDUSTRIAL CHAIN OF CNC MACHINE TOOL INDUSTRY

UPSTREAM OF CNC INDUSTRY

1. In the field of numerical control systems, including displays, sensors, servo motors, etc.;

2. The field of basic castings, including the base of the bed, the castings of the saddle table, and the welding parts of the inner and outer protective plates;

3. In the field of functional components, including precision functional components for spindles, linkage components, bearings, manipulators, etc.;

4. In the field of electronic components, it is used for basic electronic components such as circuit breakers, relays, and transformers;

5. In the field of precision tools, various turrets and tool magazines for machining, cutting blanks and workpieces.

The midstream of the CNC machine tool high-end manufacturing is the manufacturer of complete machine tools. According to the general classification of CNC machine tools, it can be divided into metal cutting machine tool manufacturers (sinking machine, large machine, etc.), metal forming machine tool manufacturers (Jinan second machine, etc.), and other machine tools. Manufacturer (Constant Hydraulics, etc.).

DOWNSTREAM OF CNC INDUSTRY

As the mother machine industry, CNC machine tools are widely used in a wide range of fields, including aerospace, shipbuilding, automobiles, construction machinery, electrical equipment, industrial molds, etc.

1. THE UPSTREAM OF CNC INDUSTRY

(1) The output of castings ranks first in the world, but the industrial structure is unbalanced. A large number of small foundry enterprises have dragged down the layout of my country's overall foundry industry. Therefore, the industry is large but not strong, and the industry concentration is low, even inferior to new economies such as India. body. For the CNC machine tool industry, the overall supply capacity is stable, but subject to the technical level of the casting industry, some high-end castings still need to be imported.

(2) The electronic components industry is relatively prosperous as a whole. It will be affected by the epidemic in 2020, but the industry will still achieve a growth rate of 11.3% driven by new energy, semiconductor and other industries, which can fully meet the needs of ordinary CNC machine tools. However, some key components of electronic components in my country are still controlled by others, so some electronic components of special high-end CNC machine tools still need to be imported, and they are subject to the risk of "stuck neck".

(3) The mechanical parts industry, which is mainly used for functional parts of CNC machine tools, has a balanced overall scale and demand, but the industry situation is similar to that of the casting industry, resulting in high-end products relying on imports for a long time, which also makes it difficult for my country's CNC machine tool midstream manufacturers to reduce the price of finished products. space, weakening a certain degree of competitiveness.

(4) The CNC system is the brain of CNC machine tools, but my country is the most restricted in this field. The low-end and medium-end CNC systems have achieved localization and popularization, but the high-end CNC system is still breaking through, and the import dependence is relatively large, which restricts my country's high-end CNC systems. Competitiveness of CNC machine tools.

2. MIDSTREAM SITUATION OF THE HIGH-END MANUFACTURING

According to Gardner's research report on machine tools, from 2017 to 2020, the output value and consumption value of China's machine tools showed a decreasing trend year by year. In 2020, the output value of China's machine tool industry was US$19.36 billion, a decrease of 0.21% from the previous year, and the consumption value was US$21.31 billion, a decrease of 4.44% from the previous year. But China is still the world's largest producer and consumer of machine tools.

According to the statistics of China Machine Tool Industry Association, in the first quarter of 2021, the overall recovery momentum of China's machine tool industry is good. Under the circumstance of effectively controlling the epidemic, it has stimulated the recovery and growth of machine tool market demand. The association predicts that the domestic machine tool industry will be able to recover this year. End the downward trend of nearly ten years and achieve growth of more than 5%.

3. DOWNSTREAM OF CNC INDUSTRY

The most widely used CNC machine tools in China are automobiles, aerospace and other fields. Although the automobile accurate metal machining supplier industry accounts for the largest consumption of CNC machine tools, it mainly uses machining centers, combined machine tools and various CNC special machines. Basically, the technical content is not high, and domestic midstream enterprises can fully meet the corresponding needs. However, in aerospace, shipbuilding, mold and other industries, there is a more urgent need for special machine tools and special machines such as high-precision high-speed machining centers, five-axis linkage machining centers, five-axis high-speed gantry milling machines, high-precision CNC grinding machines, and large-scale CNC boring and milling machines. , is also a field that is still highly restricted by the West.

Fortunately, some small and sophisticated high-end CNC mechanical parts machining companies in China are emerging, such as Kede CNC, they have gradually mastered related technologies with independent intellectual property rights and more modern production workshops , which provides a strong guarantee for the domestic replacement of high-end precision CNC machine tools in the aerospace field.

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