Drive type reversion polisher

Abstract

The invention discloses a drive type reversion polisher. The drive type reversion polisher comprises an upper disc part and a lower disc part both of which rotate in opposite directions. The upper disc part comprises a polishing die, an upper shaft and a swinging mechanism, wherein the polishing die is connected with the upper shaft through a spherical surface mechanism, and the upper shaft is further connected with a pressurizing mechanism and a rotating mechanism. The unfavorable effect caused by vibration produced by eccentricity, inertia and the like of a large workpiece is overcome due to the low-velocity rotation of the lower disc part, the grinding process is more stable, the upper disc part and the lower disc part are rotated in the opposite directions, the relative speed between the polishing die and the workpiece is effectively improved, and the machining efficiency is greatly improved under the condition that the polishing quality is guaranteed. The consistency of the relative revolving speed of the polishing die and the workpiece can be effectively guaranteed, and the occurrences that according to a traditional polisher, the passive revolving speed of a polishing die is fluctuated due to the different linear velocity differences, and polishing is uneven are avoided.

Description

technical field

[0001] The invention relates to optical cold processing equipment, in particular to an active reverse polishing machine for processing large-diameter workpieces. Background technique

[0002] For the polishing of large-diameter (φ300-800 mm) workpieces, traditional polishing machines usually have the following characteristics: 1. The lower plate runs with the spindle at medium and low speed; 2. The swing track of the pressure head is an arc or ellipse; 3. The upper plate The part rotates passively with the lower plate to realize grinding. With the increase of the rotating speed of the workpiece itself, the centrifugal inertial force increases; coupled with the eccentric swing of the pressure part, the greater the vibration generated by the polishing equipment, the greater the impact on the grinding quality. When the speed is low, the vibration will be reduced, but the grinding is relatively slow and the processing efficiency is very low. Increasing the grin...

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