Rigid eccentric-gearing revolution and rotation pneumatic-force-application numerically-controlled polishing device

Abstract

The invention discloses a rigid eccentric-gearing revolution and rotation pneumatic-force-application numerically-controlled polishing device and belongs to the field of ultra-precision optical surface finishing. The numerically-controlled polishing device comprises motors, a fixing bracket, a base, belt wheels, belts, a universal joint, a pneumatic rotary joint, an rotation shaft, an rotation transmission rod, a revolution block, a dovetail slide block, a dovetail groove, an air cylinder, a bulb and a polishing disk. When the numerically-controlled polishing device is in operation, the position of the dovetail slide block in the dovetail groove is adjusted to change the eccentricity amount of the rotation shaft; the rotation motor and the rotation shaft are connected through the telescopic universal joint to realize rigid transfer of the rotation movement; air with a certain air pressure sequentially passes through the pneumatic rotary joint, the hollow rotation transmission rod and the hollow rotation shaft to enter the air cylinder to exert a certain pressure on the polishing disk, so as to finally achieve certainty processing of optical elements. The numerically-controlled polishing device is applicable to ultra-precision surface finishing of large-caliber optical elements.

Description

technical field [0001] The invention relates to a small tool head polishing device, in particular to a rigid eccentric transmission revolution and rotation air pressure numerical control polishing device, which belongs to the field of ultra-precision optical surface processing. Background technique [0002] In recent years, the development of large-scale optical systems such as a new generation of aerospace cameras and air / ground-based large-aperture optical telescopes has been very rapid, which has put forward new requirements for the processing technology of high-precision large-aperture optical aspheric components, especially off-axis, high Steepness components require CNC polishing machine tools to have precise three-dimensional pose control capabilities and be able to provide large-caliber, high-removal efficiency, and high-stability removal functions. These requirements have greatly promoted the development of new tool structures and related processes. . [0003] Comp...

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Problems solved by technology

[0006] Aiming at the problems of insufficient flexible shaft transmission torque, non-rigid torque transmission, and quantitative control of pressure in the existing numerical control polishing device, the present invention proposes a rigid eccentric transmission public rotation air pressure force numerical control polishing device, by adopting a new type The rigid eccentric transmission structure and the air pressure application method of the top air intake solve the problems of insufficient rotation shaft torque, easy breakage, torque accumulation / release, and unstable removal function due to uncertain pressure in the optical surface processing of small CNC tools. It is a precision optical surface processing device with exquisite structure, high degree of integration and good stability

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