The amendment of the removal function model in edge effect

Wenjin Shang; Yifan Dai; Xusheng Zhou

doi:10.1117/12.674305

9 June 2006 The amendment of the removal function model in edge effect

Wenjin Shang, Yifan Dai, Xusheng Zhou

Proceedings Volume 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 614931 (2006) https://doi.org/10.1117/12.674305
Event: 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies, 2005, Xian, China

Abstract

In computer controlled optical surfacing (CCOS), edge effect is a problem that needs to be solved as soon as immediately. When the polishing tool moves along the edge of the workpiece, the theoretical removal function model is not suitable for the machining practice. The pressure distribution is studied when the polishing tool goes beyond the border of the workpiece. The pressure distribution along the radius of the workpiece is presented and the calculation formula is given. The character of the pressure distribution is analyzed. On the basis of the analysis of the pressure distribution and the Preston hypothesis the amendment model of the removal function is established. The calculation formula of the amendment model is given and numeric analysis of the amendment model is processed. Using Matlab, the 3D simulation result of the amendment model is obtained. The removal profiles along X-axis and Y-axis are plotted. The characteristics of the amendment model are analyzed. Comparing the experiment results with the simulation results verifies the accuracy of the amendment model. Typical phenomena in experiments are analyzed and appropriate removal performance is illustrated. Our model correctly predicts that a greater amount of material is removed from the edge of the workpiece.

Citation Download Citation

Wenjin Shang, Yifan Dai, and Xusheng Zhou "The amendment of the removal function model in edge effect", Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 614931 (9 June 2006); https://doi.org/10.1117/12.674305

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