Research on the normal error of large aspheric mirror employed in bonnet polishing

Wei Yang, Chun Jin Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

2 Citations (Scopus)

Abstract

The influence function's action orientation of the Bonnet Polishing (BP) process is perpendicular to the contact zone. So the normal error of the aspheric surface should be used as the residual error to calculate the dwell time. But the Z axis direction error is generally adopted as the residual error and few papers on the normal error have been reported hitherto. It's necessary to pay attention to this issue. In this paper, two algorithms which are Asphericity Subtraction (AS) algorithm and Z Axis Direction Error Transformation (ZADET) algorithm are presented to calculate the normal error of the large aspheric surface. Simulations in three different cases are organized to utilize these two algorithms, together with the comparison of them. And the comparison of the normal error and the Z axis direction error is also organized. It's found that there exists difference between AS algorithm and ZADET algorithm. Both of them can be used to calculate the normal error of the aspheric surface when the ratio value of the width to radius is small. And the difference between the normal error and Z axis direction error is considerable. So the normal error should be used as the residual error to calculate the dwell time in BP process.

Original languageEnglish
Title of host publicationMaterials Design, Processing and Applications
Pages3321-3324
Number of pages4
DOIs
Publication statusPublished - 2013
Externally publishedYes
Event4th International Conference on Manufacturing Science and Engineering, ICMSE 2013 - Dalian, China
Duration: 30 Mar 201331 Mar 2013

Publication series

NameAdvanced Materials Research
Volume690-693
ISSN (Print)1022-6680

Conference

Conference4th International Conference on Manufacturing Science and Engineering, ICMSE 2013
Country/TerritoryChina
CityDalian
Period30/03/1331/03/13

Keywords

  • Bonnet polishing
  • Large aspheric mirror
  • Normal error
  • Residual error

ASJC Scopus subject areas

  • Engineering(all)

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