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Proceedings Article

Edge effects with Preston equation

[+] Author Affiliations
Esteban Luna-Aguilar, Maria H. Pedrayes

Univ. Nacional Autonoma de Mexico (Mexico)

Alberto Cordero-Davila

Benemerita Univ. Autonoma de Puebla (Mexico) and Univ. Nacional Autonoma de Mexico (Mexico)

Jorge Gonzalez, Victor Cabrera, Carlos I. Robledo-Sanchez, Jorge Cuautle-Cortez

Benemerita Univ. Autonoma de Puebla (Mexico)

Manuel Nunez-Alfonso

Univ. Nacional Autonoma de Mexico (Australia)

Proc. SPIE 4840, Future Giant Telescopes, 598 (January 1, 2003); doi:10.1117/12.459869
Text Size: A A A
From Conference Volume 4840

  • Future Giant Telescopes
  • J. Roger P. Angel; Roberto Gilmozzi
  • Waikoloa, Hawai'i, USA | August 22, 2002


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.

© (2003) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.


Glasses ; Polishing ; Skin

Esteban Luna-Aguilar ; Alberto Cordero-Davila ; Jorge Gonzalez ; Manuel Nunez-Alfonso ; Victor Cabrera, et al.
"Edge effects with Preston equation", Proc. SPIE 4840, Future Giant Telescopes, 598 (January 1, 2003); doi:10.1117/12.459869; http://dx.doi.org/10.1117/12.459869

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