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Proceedings Paper

Edge effects with the Preston equation
Author(s): Esteban Luna-Aguilar; Alberto Cordero-Davila; Jorge Gonzalez; Manuel Nunez-Alfonso; Victor Cabrera; Carlos I. Robledo-Sanchez; Jorge Cuautle-Cortez; Maria H. Pedrayes
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Paper Abstract

In the polishing process, the wear tends to be greater when the tool extends beyond the edge of the workpiece. A linear pressure distribution (between the tool and the workpiece) has been used to explain this effect, however, this model also can predict negative pressures. This could mean that material is deposited instead of being removed. We present a new pressure distribution proposal, which presents like a skin effect. This means that the pressure is significantly higher at the border points than at internal points of the glass. With this model the material removal at the border points is increased considerably since, according to Preston, the wear is proportional to the pressure. This pressure distribution model is applied to calculate the wear produced by a square tool on a glass border moving along straight lines.

Paper Details

Date Published: 30 January 2003
PDF: 6 pages
Proc. SPIE 4840, Future Giant Telescopes, (30 January 2003); doi: 10.1117/12.459869
Show Author Affiliations
Esteban Luna-Aguilar, Univ. Nacional Autonoma de Mexico (Mexico)
Alberto Cordero-Davila, Benemerita Univ. Autonoma de Puebla (Mexico)
Univ. Nacional Autonoma de Mexico (Mexico)
Jorge Gonzalez, Benemerita Univ. Autonoma de Puebla (Mexico)
Manuel Nunez-Alfonso, Univ. Nacional Autonoma de Mexico (Australia)
Victor Cabrera, Benemerita Univ. Autonoma de Puebla (Mexico)
Carlos I. Robledo-Sanchez, Benemerita Univ. Autonoma de Puebla (Mexico)
Jorge Cuautle-Cortez, Benemerita Univ. Autonoma de Puebla (Mexico)
Maria H. Pedrayes, Univ. Nacional Autonoma de Mexico (Mexico)


Published in SPIE Proceedings Vol. 4840:
Future Giant Telescopes
J. Roger P. Angel; Roberto Gilmozzi, Editor(s)

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