Micro arc ion plating surface treatment method for flexible gear for harmonic reducer

Abstract

The invention discloses a micro arc ion plating surface treatment method for a flexible gear for a harmonic reducer. The method comprises the following implementation steps that firstly, the cleaned and dried flexible gear is placed into a four-target micro arc ion plating device vacuum chamber; and after vacuum pumping is conducted, the four-target micro arc ion plating device vacuum chamber is inflated with argon, after surface impurities are removed through ion sputter cleaning, micro arc ion plating is conducted, certain electrical parameters are applied to a chromium target, a graphite target and the flexible gear, a pure chromium bottoming layer, a transition layer and an amorphous carbon work layer are sequentially deposited, and the vacuum chamber air pressure and film plating time are controlled. By means of the method, the reducer is endowed with the properties of high speed, high load bearing, low friction, abrasion resistance and self-lubrication, and therefore the technological content of domestic reducers is improved, and the service life of the domestic reducers is prolonged.

Description

technical field [0001] The invention relates to the field of material manufacturing, in particular to a method for treating the surface of a flexible gear with micro-arc ion plating for a harmonic reducer. Background technique [0002] As an important basic part of precision machinery, the reducer is widely used in the fields of industrial robots, CNC machine tools, aerospace and other precision machinery drive control. For example, among the production costs of the four core components of industrial robots, reducers account for the largest proportion (more than 30%). However, the domestic market is basically monopolized by "foreign goods". The reason is that the product has insufficient durability and poor precision due to the low fatigue and wear life of the gear teeth of the domestic reducer. [0003] The micron controllable film layer of ion plating surface treatment has excellent tribological properties, which is suitable for the final treatment process of wear-resista...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of insufficient product durability and poor precision caused by the low fatigue and wear life of the gear teeth of the existing reducer. The flexible gear has a self-lubricating function and is used in the harmonic reducer to avoid the wear and fatigue damage caused by the direct contact between the gear friction pairs under the conditions of instantaneous overload and overspeed, so as to achieve the "reduced reduction" of the reducer. Grinding and prolonging life”

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