Polishing Die Surface Shape Modifying Device

Abstract

The invention discloses a polishing die surface shape modification device and belongs to the optical element machining technical field. The polishing die surface shape modification device comprises a supporting column, a supporting frame, a guide rail and a driving motor; two ends of the guide rail are supported by the supporting column and the supporting frame and connected with the supporting column and the supporting frame respectively; the polishing die surface shape modification device also comprises a translation device, a pressure applying device and a modification plate; the translation device is fixed on the guide rail through a sliding groove and driven by the driving motor; a limiting rod is arranged between the translation device and the supporting column; the pressure applying device is connected with the guide rail through the translation device; the lower portion of the pressure applying device is connected with the modification plate through a pressure transmission rod; a levelness adjustment device is arranged between the modification plate and the pressure transmission rod and formed by a groove and a flexible wheel which is embedded in the groove. According to the polishing die surface shape modification device, the problem that the pressure of the polishing die surface shape is nonuniform is solved, the high accuracy modification on the polishing die surface shape is implemented, the uncertain factors in the circular polishing machining are reduced, the effective control can be performed on the surface shape of a machining element, the machining quality and accuracy of the machining element is improved, the machining efficiency is improved, and the local fixed-point surface shape modification is implemented.

Description

technical field [0001] The invention relates to an auxiliary device for circular polishing processing of optical elements, in particular to modifying the surface shape of a polishing mold of a circular polishing machine, and belongs to the technical field of optical element processing. Background technique [0002] At present, in the optical polishing process, the polishing mold plays an important role no matter from the point of view of mechanical grinding theory or chemical polishing theory. The polishing mold can not only carry the polishing liquid, ensure the micro-cutting and chemical action of the polishing liquid on the components, but also correct the surface shape of the components to achieve high precision. Therefore, the surface shape of the polishing die itself has a direct impact on the surface shape of the processing element. [0003] Commonly used polishing molds include asphalt polishing molds, polyurethane polishing molds, etc. The correction of the asphal...

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Problems solved by technology

[0007] The beneficial effect of the present invention is that the pressure device can actively apply pressure to the polishing die, and a variable-direction modification disk is designed and adopted, and the diameter of the modification disk is variable, and the pressure can be controlled; At the same time, the modification plate solves the problem of uneven pressure on the surface of the polishing die, and achieves local fixed-point modification of the surface shape, realizing high-precision modification of the surface shape of the polishing die , which reduces the uncertain factors in the ring polishing process, can effectively control the surface shape of the processing components, improve the processing quality and precision of the processing components, and improve the efficiency of processing, realize local fixed-point modification of the surface shape, and avoid polishing molds. The inefficiency and uncertain results brought about by the overall downward pressure of the correction plate to modify the surface shape

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