Search:
Computing and Library Services - delivering an inspiring information environment

Research on edge-control methods in CNC polishing

Yu, Guoyu, Walker, David D., Li, Hongyu, Zheng, Xiao and Beaucamp, Anthony (2017) Research on edge-control methods in CNC polishing. Journal of the European Optical Society-Rapid Publications, 13 (24). ISSN 1990-2573

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.

Download (6MB) | Preview

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.

Item Type: Article
Uncontrolled Keywords: Segment mirror; Optical fabrication; Telescopes; Polishing
Subjects: Q Science > QB Astronomy
T Technology > TA Engineering (General). Civil engineering (General)
Schools: School of Computing and Engineering
Related URLs:
Depositing User: Guoyu Yu
Date Deposited: 20 Sep 2017 13:10
Last Modified: 20 Sep 2017 13:19
URI: http://eprints.hud.ac.uk/id/eprint/33457

Downloads

Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©