Tool Setting Method for Machining Large Aperture Aspherical Optical Components by Atmospheric Plasma

Abstract

The invention provides a high-precision cutting tool alignment method for machining a large-caliber non-spherical-surface optical element by atmospheric plasma. The cutting tool alignment method for machining the large-caliber non-spherical-surface optical element by the atmospheric plasma comprises the following steps: firstly, adjusting a side edge of the optical element to be parallel to a horizontal coordinate axis; then leveling the surface of the optical element along the Z direction of a symmetric coordinate position of a central axis; finally, determining a central coordinate of the optical element and positions of a plasma torch center and an optical element center through two-edge cutting tool alignment, so as to finish cutting tool alignment. By comprehensively considering factors in two aspects of cutting tool alignment efficiency and cutting tool alignment precision, a traditional fixed type thimble head is replaced with a high-precision triggering measuring head. By adopting the cutting tool alignment method provided by the invention, influences caused by manual factors including experience of operators, an observation angle and the like are reduced; the cutting tool alignment precision and assembling and adjustment quality of the optical element are extremely improved; the operation convenience and the cutting tool alignment efficiency are improved, and the machining quality and the technological stability are easy to improve.

Description

technical field [0001] The invention belongs to the field of optical processing, and in particular relates to a tool setting method for processing large-diameter aspheric optical elements by atmospheric plasma. Background technique [0002] Atmospheric plasma processing technology is an innovative technology developed in the field of optical processing in recent years, especially for the processing of optical components of hard and brittle materials (such as: fused silica, silicon carbide, etc.) and has extremely important value. The processing principle is: use the chemical reaction between the high-density and highly reactive atoms generated by the plasma excitation under normal pressure and the surface atoms of the material to generate volatile reaction products, so as to realize the efficient removal of materials. Plasma processing is a non-contact chemical processing that does not introduce subsurface damage, and has unique advantages in optical element processing. [...

AI Technical Summary

Problems solved by technology

This method relies heavily on the experience and proficiency of the operator, and is greatly influenced by humans, and there are problems such as difficulty in ensuring the accuracy and quality of tool setting, and long operation time.

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