Clamp controlling non-rotational symmetry errors for optical elements during polishing

Abstract

The invention belongs to the technical field of optical fabrication and provides a clamp controlling non-rotational symmetry errors for optical elements during polishing. The clamp aims to solve the problems that the polishing difficulty is high and the machining convergence efficiency is low in the prior art and comprises a clamping shaft sleeve, locking screws A, a one-dimensional translation table and a fixed base; the clamping shaft sleeve is fixed to the upper installation surface of the one-dimensional translation table, and the lower installation surface of the one-dimensional translation table is fixedly connected to the fixed base; the clamping shaft sleeve is coaxial with the fixed base, is of a flexible structure and is locked by the locking screws A. According to the invention, through monitoring to the magnitude and the directions of the non-rotational symmetry errors in the machining process, the offset of the optical elements can be adjusted in the directions of the errors correspondingly, the non-rotational symmetry errors can be corrected, and the machining efficiency can be improved. Through the simple, accurate and reliable clamping mode, the non-rotational symmetry errors of the optical elements in the classical polishing process can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of optical manufacturing, and in particular relates to a jig for polishing optical elements for controlling non-rotational symmetry errors. Background technique [0002] For the classical polishing process that is widely used in the processing of optical components, the clamping of optical components in the processing process generally adopts the method of asphalt bonding, see the attached figure 1 , the optical element 5 is bonded to the aluminum disk 7 through pitch 6, and then the aluminum disk is installed on the rotary table of the processing machine tool to realize the coaxial positioning of the optical element and the workpiece axis of the machine tool. However, in the bonding process, the method of human eye alignment is often used, and the coaxiality between the optical element and the aluminum disc 7 is difficult to be accurately guaranteed, so that it is easy to cause non-rotational symmetry error...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a jig for polishing optical elements that controls non-rotational symmetry errors, so as to solve the problems of high polishing difficulty and low processing convergence efficiency in the prior art

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