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Proceedings Paper

Aspheric machining form correction by form-measuring instrument and aspheric programming system
Author(s): Hideki Ogawa; Yukio Endo; Seiichi Itoh
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Paper Abstract

Developments in 2 axis CNC aspheric machines and aspheric measuring instruments met the growing demand for high accuracy aspheric form machining, machine and machining accuracy have significantly improved in last 6 years. It was found that spherical form could be machined and measured to a very high form accuracy, which was not possible to match for aspheric form due to the measurement term of absolute radius with form accuracy. Form correction software for use with aspheric form measuring instrument (Form Ta.Iysurf) was developed by Rank Taylor Hobson (RTH) to eliminate waviness on the diamond cutting edge and radius error from true radius and to reduce aspheric form machining accuracy down to that of spherical form.

Paper Details

Date Published: 20 October 1992
PDF: 11 pages
Proc. SPIE 1720, Intl Symp on Optical Fabrication, Testing, and Surface Evaluation, (20 October 1992); doi: 10.1117/12.132105
Show Author Affiliations
Hideki Ogawa, Rank Taylor Hobson K.K. (Japan)
Yukio Endo, Rank Taylor Hobson K.K. (Japan)
Seiichi Itoh, Topcon Corp. (Japan)


Published in SPIE Proceedings Vol. 1720:
Intl Symp on Optical Fabrication, Testing, and Surface Evaluation

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