A center-of-mass loading tooling and polishing method for controlling high parallelism processing of special-shaped optical window parts

Abstract

The invention proposes a center-of-mass mounting tooling and a polishing method for controlling high parallel difference processing of special-shaped optical window parts. The tooling includes a special-shaped rubber mold, a transfer post, and a joint. The invention realizes that the center of mass of the special-shaped rubber mold is on the axis position of the mounting hole on the back of the special-shaped rubber mold through the tooling, and ensures that the center of mass of the special-shaped optical window part is always on the central axis of rotation during processing. The present invention proposes the plate-mounting method of combining the rubber mold and the special-shaped optical window parts with "centroid coincidence" and the principle of "aperture complementarity" on both sides of the special-shaped optical window parts to ensure the "nearly equal removal" of the special-shaped optical window parts in polishing, thereby Realize high parallelism processing. In the design of the special-shaped rubber mold, the invention skillfully transplants the center of rotation in the processing of the part to the centroid point of the special-shaped rubber film, realizes quantitative and precise control, effectively combines with the processing practice, and solves the problem of high parallelism of large-sized special-shaped optical window parts Fix technical bottlenecks.

Description

technical field [0001] The invention belongs to the technical field of optical cold processing, and specifically relates to a center-of-mass mounting tooling and a polishing method for controlling high parallel difference processing of special-shaped optical window parts, and is especially suitable for high parallel difference processing of medium and large-sized second-level parallel difference shaped parts. Background technique [0002] Large-sized, ultra-thin, special-shaped optical windows are characterized by irregular shapes, such as asymmetrical triangles, trapezoids and other irregular polygons, with large dimensions, large diameter-to-thickness ratios, and 5″ parallelism requirements. The difficulty in processing special-shaped optical window parts is How to ensure the accuracy requirements of high parallelism. Traditionally, there are two ways to determine the position of the upper plate: one is the position of the upper plate determined entirely based on experience...

AI Technical Summary

Problems solved by technology

[0004] 1. There is no theoretical support for the trading position at all, and the blindness is large;

[0005] 2. Repeated heating, adjustment, constant temperature and parallel correction on the plate according to the size of the actual parallel difference and the deviation direction, which will affect the surface defects of the parts;

[0006] 3. For large-sized special-shaped parts, it is easy to have aberrations in trimming, resulting in a thickness that is too small to be used, and eventually leads to the scrapping of the parts;

[0007] 4. The processing efficiency is low, the processing cycle is long, and the accuracy is difficult to guarantee repeatedly

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