Investigation of four classical groove patterns with three typical tool types for use in the rigid tool smoothing process

Hsing-Yu Wu; Kai Meng

doi:10.1117/12.2244114

22 July 2016 Investigation of four classical groove patterns with three typical tool types for use in the rigid tool smoothing process

Hsing-Yu Wu, Kai Meng

Author Affiliations +

Proceedings Volume 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II; 991248 (2016) https://doi.org/10.1117/12.2244114
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

Abstract

When a surface experiencing robotic processing to improve its optical performance (such as removing mid-spatial frequencies, localized grinding errors, and regional surface scratches), spindle speed, tool travel speed, pressure, slurry density as well as groove patterns are main factors to influence surface finishes. Based on the desired material removal rate, the Preston equation can provide optimized pressures and velocities between the tool and processed surface. Various groove patterns, however, can hardly predict by the equation because different patterns can cause unique tool deformation and pressure distribution, leading to determine unique smoothing result. In this paper, four typical groove patterns are studied: non-groove, grid grove, annular groove and radial groove with three typical tool types are evaluated by Finite Element Method (FEM) and statistics. Characteristics of these tools and groove patterns are presented in the end of this paper.

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Hsing-Yu Wu and Kai Meng "Investigation of four classical groove patterns with three typical tool types for use in the rigid tool smoothing process", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991248 (22 July 2016); https://doi.org/10.1117/12.2244114

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KEYWORDS

Finite element methods

Surface finishing

Glasses

Robotics

Spindles

Copper

Polishing

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