At present, Chinas manufacturing industry is in the transition period of structural adjustment and industrial upgrading. The domestic manual shell industry will gradually withdraw from the market, and the stamping shell and CNC shell will get better development.



It is inevitable for new things to replace old ones. The transformation of motor shell processing from manual to numerical control and machine stamping shows that the development of industrialization needs continuous innovation. Because todays technology is the driving force of development, the overall development of motor shell industry in China tends to be slow, one of the reasons is affected by international motor shell processing. For profitable industries, everyone blindly develops, resulting in vicious competition, but the problem has not been fundamentally solved, that is, no new core technology has been developed and put into the motor shell processing and production, so the industry will rise slowly.



Summing up the current situation of the motor shell manufacturing industry, on the basis of the original constantly push the old and bring forth the new, not only to reverse the domestic production market, but also to sprint to the international market, which is the future development of motor shell processing.



The motor shell is used to prevent impurities from entering, and the lubricating oil flowing back from the friction surfaces of the motor is collected and stored to dissipate part of the heat and prevent the lubricating oil from oxidation. Generally, the casing is not easy to break down. Most of the casing faults found on site are caused by external force. If the fracture is light and there are only small cracks, mechanical clamping and welding can be used, but attention should be paid. So what are the measures to improve the machining quality of motor casing?



1. Improve the quality of motor shell in process

After improving the machining quality of the motor shell, if the accuracy and tolerance of the shell can not meet the requirements, the positioning of the die will be greatly affected. When processing the casing, pay attention to the lip plane, remove the high place outside, and lower than the lip plane. The size of the workpiece that should be paid attention to in order not to deform when finishing.



2. Improving the quality of motor shell blank

In the production workshop processing and assembly, the workpiece can not be perfectly assembled in place. Most of the reasons are due to the size of the motor shell is out of tolerance, the foot root is too large and the height of the non matching surface is higher than the processing plane. This situation not only increases the difficulty of assembly, but also increases the maintenance workload. We need to strengthen the quality control of the motor shell blank, but also consider modifying the mold to reserve a little space.



3. Do a good job in product inspection

In the processing of the motor shell blank and mold quality problems can not be delayed, after a period of time to check the mold, found problems or defects in time to repair, can not handle the problem of the mold at will, must be in accordance with the provisions of the inspection of technical personnel to come to a conclusion before repair.

During the machining process of motor shell according to the drawing, because the machining accuracy of key parts of the shell is very high, in order to meet the size requirements, the program is set to meet the corresponding accuracy requirements. Every detail is very important. When machining the motor shell, we should improve the accuracy requirements for the links with low precision or easy to ignore.



The reasons affecting the machining accuracy of motor shell are as follows:

1. In the process of machining, because the cylinder parts belong to the thin-walled sleeve parts, the clamping rigidity and processing rigidity are poor, and it is easy to produce vibration, resulting in some size out of tolerance;

2. The failure of the cooling system of the machine tool leads to the continuous high temperature and thermal deformation of the workpiece in the process of processing;

3. There are some problems in the bearing of machine tool spindle, and the vibration is severe, which affects the dimensional accuracy;

4. The inner hole depth is longer, the tool extension length is too long, and there is no appropriate clamping system, which leads to the chatter marks on the inner hole surface.



The measures to improve the machining accuracy of motor shell are as follows

1. Other clamping schemes are adopted to increase clamping rigidity, such as mandrel;

2. Maintenance of machine tools;

3. On the premise that the machining can be completed, the inner hole turning tool with larger tool rod diameter is selected, and the inner hole tool is used for clamping.



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