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The magnetic material is the inevitable choice

Areas work better together. Because most of the rare earths are now produced in China, and the reserves are also the first in the world, China has a significant resource advantage in automotive permanent magnet motors. 3. The motor system is moving towards industrialized multi-class, small-scale and large-scale production. Therefore, the issue of batch production capacity and quality system certification must be addressed. In the future, China will present an independent supplier of new car electric drive systems to support the electric car and traditional car industries. With the increase of the requirement of mixing degree, correspondingly, the demand for the scale of feedback braking will also increase. At this stage, special needs to deal with multi-type, small-scale flexible production. THSII has been extended to various models including Lexus, and IMA has been equipped to various models including Civic and Accord. The development and improvement of Toyota's drive system THSII and Honda's IMA system fully reflect this.. Expanding the feedback braking high-efficiency zone is similar to the transmission fuel-engine car equipped with a gearbox to expand the engine operating area. 2. Carry out the mechatronics integration process It is necessary for the drive motor system to meet the requirements of powertrain integration and support the serialization of the vehicle products and the scale of production. Process and engineering issues. Wood Lantern suppliers Mechatronics is not only the integration of technology, but also the integration of electromechanical structures. In Japan ’s “Next Generation Car Strategy 2010”, research and development have been proposed. Together, user-oriented visual programming goes directly to microprocessing through code conversion and download, which continuously improves programming power and debuggability. After more than ten years of development, China has made great improvements in vehicle drive motor technology, products and industry. A new type of car electrical automation industry is gradually taking shape. For large-scale production, the cost of a single set is reduced according to a 90-95% share.

Motor controllers (DC / AC), low-voltage DC / DC converters, and bidirectional high-voltage DC / DC converters Integration in different ways is becoming a trend. The development of integration of hybrid engines and drive motors ranges from structural integration to control integration to system integration. China has independently developed a series of drive motor system products that meet the needs of various types of electric cars, and has obtained a large number of relevant intellectual property rights for drive motor systems, forming a mass production capacity. The development of electric drive system industrial clusters in the domestic technology development and R \u0026 D samples have been broken. On the basis of a high-function, high-speed digital control chip, high-function control algorithms and cluttered control theories have been completed, greatly improving the functions of the motor and its control system. 4. The above figure shows the relationship between the cost of the drive motor system and market demand. Increasing the power density of permanent magnet motors In order to make the motors of electric cars more compact and have greater output power, after years of practice in the world, from the perspective of improving power density and torque density, rare earth permanent magnets are selected as motors. The integration of the electric drive control system for vehicles has also been continuously increased. 1. At the same time, companies in the United States, Europe, and Japan that supply new energy car drive systems have made rapid progress, and have made great progress in reducing motor production costs, improving motor power, and integrating motor and engine planning. The magnetic material is the inevitable choice. China's self-developed permanent magnet synchronous motors, AC asynchronous motors and switched reluctance motors have now completed small and medium-sized batches with domestic vehicle companies. With the spread of electric cars, the market urgently needs such high-performance motors that use rare earth permanent magnet materials. The power scale of the products covers the power requirements of vehicles below 200kW, and the primary function of the drive motor system The indicators have reached the international advanced level of the same power level, and some companies' products have gone abroad. The continuous development of the mechatronics integration process requires gearbox manufacturers and motor companies to cooperate with each other, to be compatible with motor interfaces on the basis of the original traditional gearboxes, and even to plan dedicated mechatronics gearboxes, capable of organically combining the two. In recent years, China has listed rare earth elements as strategic resources and imposed severe export restrictions, which directly led to Japan ’s worry about permanent magnet motors with rare earth materials.[Tag: title]

The vehicle drive motor is the central and key component of the power system of an electric car, and its function directly affects the vehicle's overall vehicle function. Motor technology that replaces rare earth permanent magnet raw materials. As the electrification share of car power is getting higher and higher, the electromechanical coupling powertrain systems with different coupling depths make the connection between the motor and the gearbox more and more tight. Feedback braking is a fundamental feature of hybrid mechatronics. Selecting the motors of feedback colleges, appropriate transmission systems, and control strategies can make the scale of feedback brakes more accustomed to more working conditions, make the vehicle energy saving more useful, and extend the driving distance. The industrial chain has gradually Perfection and continuous improvement of supporting capabilities also make China's drive motors face many challenges in the future. The integration of vehicle drive motor system is mainly reflected in the continuous improvement of the mechatronics integration of motor and engine, motor and gearbox, motor and brake system. The high-speed, high-function microprocessor makes the electric drive control system enter the all-digital era. The United States is also seeking a technology alternative to rare earth permanent magnets in its next-generation power electronics technology plan, but has not found a better way. In the field of high-performance electric cars, a new plan will be developed to develop the chassis system, braking system, and wheel train, so that the motor and power transmission device will be integrated. The electric drive system is also continuously introducing a variable-speed structure to complete the adjustment of the motor operating area, so that the two can achieve higher power. 5. Increase the integration and digitalization of the control system

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The development trend of linear motors In domestic shopping malls.

The linear motor can be considered as a structural deformation of the rotary electric machine. It can be regarded as a rotary electric machine that is cut along its radial direction and then flattened and evolved. With the rapid development of automatic control technology and microcomputers, higher requirements have been placed on the positioning accuracy of various automatic control systems. In this case, the traditional rotary motor plus a set of linear motion drive devices that change the organization Nowadays, it is far from satisfying the requirements of modern control systems. For this reason, many countries in the world are studying, developing and using linear motors, making the demand for linear motors more and more vigorous. Introduction to linear motors Linear motors, also known as linear motors, are a type of mechanical equipment commonly used by production companies in various fields.

When it is installed on the production equipment, it can supply high-speed automatic China electric motors manufacturers linear motion for the production line of the enterprise, and then it can effectively improve the production capacity of the enterprise. Linear motors have many advantages such as simple structure, high acceleration, strong adaptability, easy adjustment and control, no lateral edge effect, and high primary winding utilization. Linear motors can be divided into three types: cylindrical linear motors, U-slot linear motors, and flat linear motors. Statistics on the supply of linear motors show that in recent years, the supply of linear motors in China has been increasing year by year, and the growth rate is relatively stable. In 2011, the output value of linear motors in China was 530 million units; by 2016, the output value of linear motors has reached about 850 million units, and the average annual compound growth rate from 2011 to 2016 was 10.0%. Demand for linear motors Nowadays, global linear motor malls are basically monopolized by foreign giants. GE, Bosch, Siemens and other companies all have linear motor companies. The domestic understanding of linear motors mostly comes from the study of imported production equipment, and it is found that the core component is a set of linear motor units.

More and more domestic enterprises have entered the development and production of linear motors, and their occupational needs and the scale of shopping malls have also become larger and larger. Statistics show that in recent years, the demand for linear motors in China has been increasing year by year, and the growth rate is relatively stable. In 2011, the demand for linear motors in China was 560 million units; by 2016, the demand for linear motors is about 870 million units, and the average annual compound growth rate from 2011 to 2016 is 9.2%. The development trend of linear motors In domestic shopping malls, although linear motors are still in the early stages of development, product technology and technology still need to be further improved and matured, but in the wave of continuous upgrading of industrial machinery automation, the future development prospects are good. In the rapidly developing industrial category at that time, the use of linear motors in industrial production has become faster and wider, and its development trend has the following five aspects: linear motor design is modular; linear motors and controllers are integrated; Linear motor supporting equipment is simplified; efficient linear motors replace ordinary linear motors.

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The cooperation between the inner diameter of the rolling bearing

Maintenance cycle and content 1.Maintenance cycle: It will be shut down once every 6 months for continuous operation. 2. Inspection and maintenance contents: (1) Check for breakdown, remove greasy dirt and debris in the gears and gearboxes, and analyze and replace the lubricating oil. (2) Check the cracks, abrasion and meshing conditions of the gears, and repair or replace them in severe cases. (3) Check the state of the gap between the bearing and the bearing pad, and perform maintenance and adjustment. (4) Overhaul, adjust backrest wheel and leather pad or replace. 2. Disassembly 1. Preparations before disassembly: (1) Discharge the lubricant in the gear box. (2) Remove the bolts at the joint of the gearbox cover and the gearbox flange. 2. When disassembling, fasten the gearbox cover with a sling and hang it with a lifting object. 3. Check the gaps of the gears and bearings and make a record. Take out the gears, clean and dry carefully. 4. Remove grease and dirt from the gearbox. Third, the quality standards of inspection and maintenance of various components (a) gears and housings 1. Gear teeth must be replaced when their thickness reaches 30%. 2. The fishing burr caused by the kneading of the teeth should be removed to make it smooth. Teeth are cracked or cracked and need to be replaced. 3. The joint surface of the upper cover and the housing flange should be lubricated to ensure tightness after installation. Use red oil to check every 100 mm. (2) Rolling bearings 1.

Measure the gap of the ball (roller). The maximum gap allowed for abrasion is generally as shown in Table 1. Table 1 Unit: mm2. The cooperation between the inner diameter of the rolling bearing and the shaft, and the cooperation between the outer diameter and the housing should comply with the rules. 3. When the surface of the ball or roller has defects that cannot be eliminated, such as pits, black spots, rust marks, and delamination, etc., it should be replaced. 4. When the gap between the non-separable bearing housing and the bearing exceeds the rules, the bearing should be replaced, or the outer circle of the bearing should be large and inserted into the sleeve. The inner circle of the sleeve should be processed according to the size required for cooperation with the bearing. For separable-bearing housings, the joint surfaces can be filed appropriately. 5, between the bearing and the bearing housing, do not agree to place gaskets. 6. Remove or install the bearing. When press-in cooperation, the bearing can be heated with 80 ℃ ～ 90 ℃ hot oil in advance and then easily removed or installed. When installing, it is necessary to hit the bearing inner hoop evenly with a sleeve and a soft pad. Never hit the bearing directly or apply force to the balls or rollers. (3) The clearance of the sliding bearing 1 and the bearing pad should conform to the rules in Table 2. Table 2 Unit: Millimeter 2. Check the contact condition of the bearing surface of the shaft and the bearing shell by painting with red oil. It is required that there should be 2 printing colors per square centimeter of the touch area, and it should be 60 in the middle of the bearing pad. ~ 90. Touch within the viewpoint. 3. The bearing bush tungsten gold should not have cracks, lack of meat, trachoma, and other defects. If the thickness of tungsten is too small, it should be recast. (IV) Shaft 1. Check the auxiliary and auxiliary neck for any defects such as damage and cracks. Can be repaired with a fine file, sanded with a fine cloth soaked with oil. 2.

The ellipse of the journal and the taper should not exceed 0.05 mm. Its surface finish: (1) Rolling bearings are not lower than VVV8. (2) The sliding bearing is not lower than VVVV10. 3. The bending degree of the shaft should be no more than 0.08 ～ 0.10 mm. Beyond the rules, a straight shaft should be used. (V) Backrest wheel 1. It is necessary to use the backrest wheel to remove the backrest wheel. It must not be damaged. 2. The gap between the joint surfaces of the two back wheels agrees to public service and shall comply with the rules in Table 3. Table 33. The plane clearance of the two back wheels should conform to the rules in Table 4. Table 4 IV. Installation 1. Before installation, the gears and journals should be cleaned and cleaned, then the gears should be heated to 120 ° C to 150 ° C with oil, and evenly installed by tightening things, and the gears and keys should not be blocked, The centerline of the shaft and gear is wrong. 2. The percentage of the actual touch area of ​​the meshing gear that is installed must be satisfied with the requirements in Table 5: Standardize the percentage of the meshing area of ​​the gears 3. The touch of the cast teeth should be checked after trial operation and should not be less than the width of the tooth / 3. 4. The radial gap between the top of the tooth and the root of the tooth must not be less than 0.20 times the modulus regardless of the machining or casting teeth. 5. The minimum side surface clearance of the gear meshing needs to conform to the rules. If there are no rules, refer to Table 5 and Table 6 for installation. Side clearance of spur gear 5 Side clearance of bevel gear 6 Side clearance of worm gear and worm should be 0.3 ~ 0.65 mm. When the worm is on and the worm wheel is ridiculous, the gap at the top of its teeth must not be greater than 1 mm. Like a worm, the gap on the tooth top of the worm wheel should not be smaller than the gap on the upper part of the bearing pad. 6. When the gears are jogging with each other, the lengths of the tooth widths that do not fit each other must not be greater than 2% of the tooth width. 7. The non-parallelism of the gear shaft shall not exceed the rules of the drawings. If there is no rule, it shall generally not be greater than 0.3 mm / m. When aligning the gear shaft, the contact surface of the teeth is good, but the parallel error of the shaft must be within the rule. 8. After the gears are assembled, it is necessary to have smooth operation. All gears that need to move in the axial direction must be able to move freely on the shaft. V. Test run and inspection 1. Before the test run, manually roll or mechanically roll the drive shaft of the reducer, and make the gear roll slowly for one week. Only when it is confirmed that there is no resistance, the official test run. 2. The lubricating oil in the gear box must be satisfied. Check the oil quantity by the liquid level gauge or the probe. 3. The reducer is idling for 1 hour first, if there is no abnormal phenomenon. It can run with load for 4 hours and can be fan system tested after normal operation. 4. During the inspection, there should be no oil leakage from the flange joint surface and the shaft seal. There should be no abnormal noise in the gear meshing. See Table 7 for the sound requirements. Table 75 for sound requirements in gear operation, bearing bush temperature should comply with the following rules: tungsten gold tile <65 ° C copper tile <60 ° C rolling bearing <70 ° C, its oscillation amplitude should not exceed 0.04 mm. 6. After the trial operation meets the requirements, if there is no abnormal phenomenon, the inspection procedures are processed according to the rules and regulations, and the production is officially transferred. 6. Operation and protection Often operate the protection operation (1) Turn the main shaft before driving, make the gear roll slowly for one week, and then start. (2) Check whether the bearing temperature is normal, whether the deceleration and vibration, and the leakage of the flange and shaft seal during lifting. If the temperature is too high, the speed reducer has a lot of vibration, it should be stopped for inspection. (3) Check that the oil level in the gearbox is within the regular marks and the pressure is normal. Refuel regularly. Lubricant trademarks should comply with the rules. (4) Check that the flange screws and foundation screws are not loose. If loose, tighten it in time. (5) Listen to the sound of the body without abnormal noise. (6) Always keep the body and operating environment clean.