Mechanism capable of achieving irrational number rotation of lower polishing disc

Abstract

The invention discloses a mechanism capable of achieving irrational number rotation of a lower polishing disc. The mechanism comprises an upper polishing disc, the lower polishing disc, an installation seat, a supporting seat and a rotary shaft and further comprises a first planetary gear train, a second planetary gear train, a universal coupling and a driving motor. The driving motor is fixed. The driving motor is connected with the first planetary gear train through the universal coupling and drives the first planetary gear train to move. The first planetary gear train and the second planetary gear train are connected in series. The second planetary gear train is connected with the top end of the rotary shaft. The mechanism is simple and compact in structure and low in production cost, the scientific problem that the machining trajectory is circulated and closed can be solved according to the grinding machining kinematics theory, and the machining precision of the mechanism is greatly improved compared with a traditional rational rotation driving device; and meanwhile, irrational numbers of different multiples can be achieved during rotation of the lower polishing disc, and the application range of the mechanism is greatly widened.

Description

technical field [0001] The invention relates to the technical field of plane polishing, and more specifically relates to a mechanism capable of realizing the irrational number rotation of the lower polishing disc, which is mainly used in the technical fields of electronics, communication, computer, laser, aerospace and the like. Background technique [0002] Grinding has become an indispensable precision processing method in the fields of high-precision machinery, aerospace, and optoelectronic information. With the continuous upgrading of products, these fields have higher and higher requirements for workpiece surface processing accuracy and surface quality. [0003] Plane grinding must ensure flatness, surface roughness, surface and subsurface dislocation morphology, and residual stress. Grinding has become an essential process for subsequent polishing and special processing to obtain an ultra-smooth surface, and polishing is mainly used to reduce the workpiece. Surface rou...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome defects such as the decrease of surface roughness, the formation of ripples on the polished surface, and orange peels caused by the repetition of the grinding track of abrasive grains on the workpiece when the traditional grinding and polishing machine is processing the workpiece, and provides a method that can realize the following The irrational rotation mechanism of the polishing disc has greatly improved the processing accuracy compared with the traditional rational rotation speed drive

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