Projects per year
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.
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.
| Original language | English |
|---|---|
| Article number | 24 |
| Number of pages | 13 |
| Journal | Journal of the European Optical Society |
| Volume | 13 |
| DOIs | |
| Publication status | Published - 16 Sep 2017 |
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Profiles
-
Guoyu Yu
- Department of Engineering and Technology - Senior Research Fellow
- School of Computing and Engineering
- Centre for Precision Technologies - Member
Person: Academic
Projects
- 2 Finished
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Novel Mathematical Techniques for Advanced Tool-paths to Transform High-value Optical fabrication
1/05/16 → 31/12/16
Project: Research
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Novel Mathematical Techniques for Advanced Tool-paths to Transform High-value Optical Fabrication (2)
1/05/16 → 1/12/16
Project: Research