Commissioning of the first Precessions 1.2m CNC polishing machines for large optics

D. D. Walker; A. T. H. Beaucamp; V. Doubrovski; C. Dunn; R. Evans; R. Freeman; G. McCavana; R. Morton; D. Riley; J. Simms; G. Yu; X. Wei

doi:10.1117/12.684091

31 August 2006 Commissioning of the first Precessions 1.2m CNC polishing machines for large optics

D. D. Walker, A. T. H. Beaucamp, V. Doubrovski, C. Dunn, R. Evans, R. Freeman, G. McCavana, R. Morton, D. Riley, J. Simms, G. Yu, X. Wei

Author Affiliations +

Proceedings Volume 6288, Current Developments in Lens Design and Optical Engineering VII; 62880P (2006) https://doi.org/10.1117/12.684091
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

This paper reports on the commissioning of the first of Zeeko's "IRP1200" 1.2m capacity 7-axis automated CNC polishing machines. These combo machines now support five different removal regimes, which are described. The machines differ substantially from Zeeko's more familiar 200mm machines on which we have focused before, in terms of overall architecture and detailed design. Large and small optics place different demands on part-fixturing, tooling, machine speeds and accelerations, metrology, slurry-handling, part-loading and access etc. These have had a profound effect on the development-path from 200 to 1.2m machines. Moreover, an advance in the kinematic design has extended the allowable range of surface slope-angles from typically 30° up to a hemisphere. The paper presents results from the pass-off trials, the first fluid-jet experiment, and the development of tooling to address a requirement to smooth a part with a local defect.

Citation Download Citation

D. D. Walker, A. T. H. Beaucamp, V. Doubrovski, C. Dunn, R. Evans, R. Freeman, G. McCavana, R. Morton, D. Riley, J. Simms, G. Yu, and X. Wei "Commissioning of the first Precessions 1.2m CNC polishing machines for large optics", Proc. SPIE 6288, Current Developments in Lens Design and Optical Engineering VII, 62880P (31 August 2006); https://doi.org/10.1117/12.684091

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