Subcaliber-polishing contour route planning method

A technology of path planning and contour lines, applied in surface polishing machine tools, grinding/polishing equipment, metal processing equipment, etc., can solve the problems of unfavorable surface shape error convergence, increase the amount of excess material removal in the lowest area of ​​the component, etc.

Active Publication Date: 2017-12-29
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When equidistant paths are used, the scanning path spacing of the small tool in all high and low areas on the component surface is the same. At this time, choosing a smaller path spacing is beneficial to reduce the intermediate f...

Method used

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  • Subcaliber-polishing contour route planning method
  • Subcaliber-polishing contour route planning method
  • Subcaliber-polishing contour route planning method

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Embodiment

[0038] The sub-aperture polishing of the present embodiment is carried out on a CNC polishing machine tool. The machine tool has three linear motion axes of X, Y, and Z, and a polishing head comprising a revolution and rotation motor. The polishing tool is an asphalt disc with a diameter of 50 mm. The polishing tool is connected to the polishing head through a ball twist. The process parameters are set as follows: the revolution speed is 100rpm, the rotation speed is 20rpm, the polishing pressure is 5kg, and the removal function of the asphalt disc is as follows: figure 1 shown. The component to be polished is fused silica glass of 400mm×400mm.

[0039] The steps of carrying out numerical control polishing to the above-mentioned fused silica glass are:

[0040] 1) Obtain the initial surface shape error distribution: use an optical interferometer with a diameter of 800 mm to detect the initial surface shape error of the component to be processed, and obtain the surface shape er...

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PUM

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Abstract

The invention provides a subcaliber-polishing contour route planning method. Through contour routes planned by the method, the inhibition of residual errors caused by convolution reaction is facilitated. The subcaliber-polishing contour route planning method comprises the following steps: (1) obtaining initial surface-shape error distribution data; (2) calculating discrete material removal quantity progressions and generating the contour route corresponding to each removal quantity; and (3) calculating coordinates of resident points and resident time of the resident points on each contour route. The subcaliber-polishing contour route planning method is capable of obtaining the appropriate material removal quantity progressions, generating the corresponding contours, obtaining dense route spacing in an area with high processed surface material removal quantity and obtaining non-dense spacing in an area with small removal quantity, so that the problem that medium-frequency errors, low-frequency surface shape and efficient convergence are difficultly achieved at the same time when an equal-spacing grating scanning method of routes or a spiral scanning method of routes is used for processing at present can be overcome.

Description

technical field [0001] The invention belongs to the field of optical processing, in particular to a contour path planning method for sub-aperture polishing. Background technique [0002] The polishing technology of optical components is divided into sub-aperture polishing and full-aperture polishing. Full-aperture polishing uses a polishing disc larger in size than the component, and the entire surface of the component is in contact with the polishing disc during polishing; sub-aperture polishing uses a polishing tool smaller in size than the component, and selectively removes a local area of ​​the component surface through a small tool , so as to realize the correction of the overall surface shape error. During sub-aperture polishing, the CNC system of the machine tool controls the small tool to scan the entire surface of the component with a certain path, and controls the removal amount of different parts by adjusting the residence time or moving speed of the small tool o...

Claims

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Application Information

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IPC IPC(8): B24B1/00B24B29/02
CPCB24B1/00B24B29/02
Inventor 廖德锋钟波赵世杰谢瑞清陈贤华王健许乔
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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