Journal ArticleDOI
Edge effects with the Preston equation for a circular tool and workpiece
Alberto Cordero-Dávila,Jorge González-García,María Pedrayes-López,Luis Alberto Aguilar-Chiu,Jorge Cuautle-Cortés,Carlos Robledo-Sanchez +5 more
TLDR
A new model in which the pressure is higher at the edge is applied to the case of a circular tool that polishes a circular workpiece and correctly predicts that a greater amount of material is removed from the edge of the workpiece.Abstract:
In a polishing process the wear is greater at the edge when the tool extends beyond the border of the workpiece. To explain this effect, we propose a new model in which the pressure is higher at the edge. This model is applied to the case of a circular tool that polishes a circular workpiece. Our model correctly predicts that a greater amount of material is removed from the edge of the workpiece.read more
Citations
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Journal ArticleDOI
Parametric modeling of edge effects for polishing tool influence functions.
TL;DR: A new parametric model is provided that fits 5 parameters to measured data to accurately predict the edge TIF for cases of a polishing tool that is either spinning or orbiting over the edge of the workpiece.
Journal ArticleDOI
Edge control in CNC polishing, paper 2: simulation and validation of tool influence functions on edges
TL;DR: A model that can predict edge TIFs based on surface-speed profiles and pressure distributions over the polishing spot at the edge of the part, the latter calculated by finite element analysis and verified by direct force measurement is presented.
Proceedings ArticleDOI
Computer Controlled Optical Surfacing With Orbital Tool Motion
TL;DR: In this paper, the authors developed Computer Controlled Optical Surfacing (CCOS) for fabricating asymmetric aspheric optical surfaces using a nonrotating orbiting tool slowly over the workpiece surface.
Journal ArticleDOI
Edge effect in fluid jet polishing.
Peiji Guo,Hui Fang,Jingchi Yu +2 more
TL;DR: Experimental results demonstrate that the removal function has a ring-shaped profile, except for a little change in the size at the operated area even if the nozzle extends beyond the edge of the sample, so that the classical edge effect can be neglected in FJP.
Journal ArticleDOI
Modelling and measurement of polishing tool influence functions for edge control
TL;DR: Progress is presented on the development of edge control for fabrication of mirror segments potentially for the European Extremely Large Telescope (E-ELT) and a model based on measured IFs data was described that allowed us accurately to predict the edge profile.
References
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Journal ArticleDOI
Optimization of computer controlled polishing.
TL;DR: In this article, a computer controlled polisher is used for fast figuring of aspheric surfaces for lightweighted workpieces using a small, rotating tool which travels over the workpiece surface.
Journal ArticleDOI
Computer-Controlled Optical Surfacing With Orbital Tool Motion
TL;DR: Itek has developed computer-controlled optical surfacing (CCOS) for fabricating aspheric optics as discussed by the authors, which slowly moves a polishing or grinding tool assembly (with rapid tool motion) over the workpiece surface.
Journal ArticleDOI
Computer assisted optical surfacing.
TL;DR: Application of the CAOS system operation of an XY machine in the fabrication of off-axis segments of general aspherics is described.
Journal ArticleDOI
Fabrication of aspherics using a mathematical model for material removal.
TL;DR: A mathematica model has been developed that predicts the aspheric surface that a typical optical surfacing machine will produce, and has been verified experimentally for the grinding process.