数控抛光中边缘控制方法的研究

Research on edge-control methods in CNC polishing.

作者信息

Yu Guoyu, Walker David, Li Hongyu, Zheng Xiao, Beaucamp Anthony

机构信息

1National Facility for Ultra Precision Surfaces, OpTIC Centre, University of Huddersfield, St. Asaph Business Park, Ffordd William Morgan, North Wales, St Asaph, LL17 0JD UK.

Department of Physics and Astronomy, University College, Gower St, London, WC1E 6BT UK.

出版信息

J Eur Opt Soc Rapid Publ. 2017;13(1):24. doi: 10.1186/s41476-017-0053-9. Epub 2017 Sep 16.

DOI:10.1186/s41476-017-0053-9

PMID:32010433

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6961492/

Abstract

BACKGROUND

We have developed edge-control for the Precessions TM process suitable for fast fabrication of large mirror segments, and other applications sensitive to edge mis-figure. This has been applied to processing of European extremely large telescope (E-ELT) prototype mirror-segments, meeting the specification on maximum edge mis-figure. However we have observed residuals that have proved impossible to correct with this approach, being in part the legacy of asymmetries in the input edge-profiles.

METHODS

We have therefore compared different proposed methods experimentally and theoretically and report here on a new edge-rectification step, which operates locally on edges, does not disturb the completed bulk area.

RESULTS

A new toolpath has been developed and experiments have been carried out to demonstrate that local edge rectification can be carried out.

CONCLUSIONS

With this method, the residue error on edges can be removed separately and has potential to reduce total process time.

摘要

背景

我们已为进动加工工艺开发了边缘控制技术，该工艺适用于大型镜面分段的快速制造以及对边缘形状误差敏感的其他应用。此技术已应用于欧洲极大望远镜（E-ELT）原型镜段的加工，满足了最大边缘形状误差的规范要求。然而，我们观察到一些残余误差，事实证明用这种方法无法校正，部分原因是输入边缘轮廓中的不对称性遗留问题。