Processing method and device for forming aspheric surface part by numerical control tangent line turning method

Abstract

The invention provides a non-spherical surface element shaping and processing method by using a numerical control tangent revolution method and a device thereof, and relates to an optical element processing technique. The processing method and the device can always conduct the tangent point processing for the meridional profile curve of any designed and given axisymmetrical non-spherical surface (including higher order and quadric spherical surface) and spherical surface element, so as to obtain a theoretical continuous smooth high precision surface without corrugation. The tangent point processing of the non-spherical surface is realized through the rotation of a workpiece and an abrasive wheel, and the numerical control linkage of an oscillating shaft, a workpiece shat and an abrasive axle. The tangent point processing of the spherical surface is realized through the rotation of the workpiece and the abrasive wheel, the oscillation of the oscillating shaft and the fixation of the abrasive axle at a certain distance. The processing technique has the advantages of good commonality, high precision and processing efficiency, easily ensured surface roughness and surface texture, low processing cost and the like.

Description

technical field [0001] The invention relates to a method and device for processing optical parts Background technique [0002] The use of aspheric optical parts in the optical system greatly improves the imaging quality of the optical system, expands the performance of the optical system, and greatly reduces the volume and weight of the optical instrument. With the development of high-tech, astronomy, aerospace, aviation, weapons, electronics, laser, optical communication and nuclear fusion and other technologies, aspherical optical components are required in the optical systems of many civil and defense products. In particular, the technology of multi-variety batch and variable batch processing of aspheric optical parts is an urgent issue to be solved at present. [0003] Since the French scholar Descartes first proposed the theory of a non-spherical aspheric optical lens composed of a convex ellipsoid and a concave sphere in 1638, in order to make aspheric optical parts w...

AI Technical Summary

Problems solved by technology

[0015] In order to overcome the practical problems of the above-mentioned current processing methods and devices for aspheric optical parts, such as difficulty in ensuring the processing quality of aspheric optical parts, low processing efficiency, and inability to adapt to the requirements of multi-variety batch-to-batch processing, the present invention provides an easy-to-guarantee processing quality Requirements, high processing efficiency of the aspheric parts of the CNC tangent rotary method forming method

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