Optimisation of grolishing freeform surfaces with rigid and semi-rigid tools

Guoyu Yu, Hsing Yu Wu, David Walker, Xiao Zheng, Hongyu Li, Christina Dunn, Caroline Gray

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

After the formal acceptance of our fabrication of E-ELT segments, we aim to further accelerate the mass production by introducing an intermediate grolishing procedure using industrial robots, reducing the total process time by this much faster and parallel link. In this paper, we have presented research outputs on tool design, tool path generation, study of mismatch between rigid, semi-rigid tool and aspheric surface. It is indicated that the generation of mid-spatial frequency is proportional to the grit size and misfit between work piece and tool surfaces. Using a Non-Newtonian material tool with a spindle speed of 30 rpm has successfully reduce the mid-spatial error. The optimization of process parameters involve the study the combination effects of the above factors. These optimized parameters will result in a lookup table for reference of given input surface quality. Future work may include the higher spindle speed for grolishing with non- Newtonian tool looking for potential applications regarding to form correction, higher removal rate and edge control.

Original languageEnglish
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
PublisherSPIE
Number of pages6
Volume9912
ISBN (Electronic)9781510602038
DOIs
Publication statusPublished - 2016
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II - Edinburgh, United Kingdom
Duration: 26 Jun 20161 Jul 2016
Conference number: 2

Conference

ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
CountryUnited Kingdom
CityEdinburgh
Period26/06/161/07/16

Fingerprint

Free-form Surface
optimization
Optimization
spindles
Tool Path Generation
Aspheric Surface
Industrial Robot
Surface Quality
Look-up Table
grit
Process Parameters
Table lookup
Industrial robots
Accelerate
Fabrication
robots
High Speed
acceptability
Directly proportional
Surface properties

Cite this

Yu, G., Wu, H. Y., Walker, D., Zheng, X., Li, H., Dunn, C., & Gray, C. (2016). Optimisation of grolishing freeform surfaces with rigid and semi-rigid tools. In Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II (Vol. 9912). [99123Q] SPIE. https://doi.org/10.1117/12.2232657
Yu, Guoyu ; Wu, Hsing Yu ; Walker, David ; Zheng, Xiao ; Li, Hongyu ; Dunn, Christina ; Gray, Caroline. / Optimisation of grolishing freeform surfaces with rigid and semi-rigid tools. Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II. Vol. 9912 SPIE, 2016.
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Yu, G, Wu, HY, Walker, D, Zheng, X, Li, H, Dunn, C & Gray, C 2016, Optimisation of grolishing freeform surfaces with rigid and semi-rigid tools. in Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II. vol. 9912, 99123Q, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, Edinburgh, United Kingdom, 26/06/16. https://doi.org/10.1117/12.2232657

Optimisation of grolishing freeform surfaces with rigid and semi-rigid tools. / Yu, Guoyu; Wu, Hsing Yu; Walker, David; Zheng, Xiao; Li, Hongyu; Dunn, Christina; Gray, Caroline.

Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II. Vol. 9912 SPIE, 2016. 99123Q.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AU - Dunn, Christina

AU - Gray, Caroline

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Yu G, Wu HY, Walker D, Zheng X, Li H, Dunn C et al. Optimisation of grolishing freeform surfaces with rigid and semi-rigid tools. In Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II. Vol. 9912. SPIE. 2016. 99123Q https://doi.org/10.1117/12.2232657