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Characteristics of Manufacturing Technology for Micro Gearmotor

Categories: Latest NewsRelease time: 2017-10-31 10:21:00
Source: ZHAOWEIEditor: ZHAOWEI Author: ZHAOWEI

The characteristics mainly lie in the two aspects for manufacturing of the gear motor. One is the mechanical process and the other is special process. With the continuous development of new structure and production technology, many techniques from the other industries like the precision machinery, instrument and apparatus, electronics and automation are largely applied into the micro gear reducer to gradually form a special technology branch for the production of micro gearmotors. 

Here with the key characters as follows:

1. There are big difference among the outside size, production volume and unit value for the micro gear reducer. Since the gearmotor are various in the type and size, it must require the reasonable origination and plan in production. For example, the step motor for watch is only several millimeter in appearance with mass of from ten to dozens of grams. But the other torque motors can exceed 1 meter in diameter and with weight of more than 100Kg. Moreover, there are also totally different in processing equipment and technology. Different type of gear motor has big difference in the production scale. Different mass also leads to a different manufacturing process. For instance, the yearly demand is only several sets for some special micro gear reducer. However, the yearly production of gearmotor is around several million, tens of millions and even more for the big volume application in home appliance like recorder, wash machine and other machines with small power.

2. The manufacturing technics for the micro gearmotor includes the iron core, winding, plastic parts, surface treatment, pre-assembly of insulator, etc. Meanwhile it also applies with many production technologies like machining, powder metal, electronic circuit, EDM, welding, precision stamping, cold extrusion, precision testing, etc. which will request for the special processing equipments and reasonable organization and plan for the production, especially for the high precision technologies like tool-making, casting and plastic part processing.

3. As a part of the system, the gear motor should have the high reliability and high dimensional accuracy. On one hand, it is required to keep the symmetry of the magnetic circuit and the balance of electronic circuit. On the other hand, the relevant geometric tolerances should be tight. For instance, Coaxiality between stator and rotor should be small. The division error and accumulated tolerance between the stator and the tip of rotor punching sheet should be reduced to several minute arcs. The fitting dimensional precision should achieve the lever of IT5-IT6 generally. To ensure the processing accuracy and consistency for the relevant parts and components, it is necessary to apply some processing and inspection equipments with high precision and full automation.

4.The constant emergence of the micro gear reducer with new structure and mechanism has driven the constant upgrading of the processing technology. With the continuous enhance of technology and popularization of standardization and generalization in the components, we have to constantly develop and apply the new technologies accordingly to meet this growing needs from the market. Such as the technologies of less and no cutting process which includes powder metal, fine blanking, cold extrusion, rolling weld, printed electronic circuit, automatic machinery processing, line production, etc.

The production process of micro gear motor refers to a series action from plan to final packing generally. It mainly include but not limited to the advance material preparation, motor inspection and acceptance, process design and comparison, formulation and release of the technical documents, design and preparation of fixture, jig and tool, technique implement of part processing, assembly and test of the assembly unit and finish products, production management, etc. To ensure the standardization and specialization, one product will be produced by one factory generally, or handled by one factory and jointly produced by their sub-factories. This way can improve the productivity and reduce the labor cost without compromising the quality. We can take the whole process as a production system engineering like the other products. With the help of computerizing analysis and control, we can arrange and manage the system scientifically and comprehensively to obtain the best economic effect and realize the modernization of production management. The technical process is the basic and the most important part of the production process. Specifically, the technology process is to change the shape and dimension of the working piece, physical properties and assembly relations from the production process till the finished product.

The technological process for the micro gearmotor can be divided into some special technologies like machining, stamping, casting, insulating treatment, heat treatment, plastic compression, winding, assembly, testing, etc. Every technics also can be separated into some individual process. The importance of technological process stays in two aspects. It is the base of production organization and the manufacturing of work piece which will directly affect the quality, productivity and equipment utilization on one hand. It is also the main foundation for the plant layout and process routing on the other hand.

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