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Analysis of NC Tool Path Generation Methods for the Machining of Sculptured Surfaces
Technical Paper
912613
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English
Abstract
The machining of sculptured surfaces with the numerically controlled (NC) machines is a common practice in recent auto industry. Manufacturing of dies for the automotive body panels requires many complex surfaces to be machined within a given tolerance.
Although various methods have been proposed by many authors, the basic concepts of current machining algorithms can be divided into two distinct categories, i.e., the surface-based method and the point-based method. While the former uses the parametric surface equations to get the machining tool path, the latter, on the other hand, discretizes the surface information into point data, and then calculates the tool path based on the resulting discretized point information.
In this paper, the theoretical backgrounds of the two different approaches are presented. From this point of view, two commercially-available softwares which are being used at DAEWOO Motor Co., Ltd., CATIA and CLIKS, are investigated, and also the check points when applying CAM softwares are suggested.
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Citation
Lee, W. and Hong, Y., "Analysis of NC Tool Path Generation Methods for the Machining of Sculptured Surfaces," SAE Technical Paper 912613, 1991.Also In
References
- Armstrong, G.T. Carey. G.C. dePennington, A. “Numerical Code Generation from a Geometric Modeling System,” Solid Modeling by Computer: from Theory to Applications Pickett M.S. Boyse J.W. Plenum Press New York 1984 139 154
- Beck, J.M. Farouki, R.T. Hinds, J.K. “Surface Analysis Methods,” IEEE CG&A December 1986 18 36
- Bobrow, J.E. “NC Machine Tool Path Generation from CSG Part Representations,” CAD 17 2 March 1985 69 76
- Chang, T.C. Expert Process Planning for Manufacturing Addison-Wesley Publishing Company 1990
- Chappel, I.T. “The Use of Vectors to Simulate Material Removed by Numerically Controlled Milling,” CAD 15 3 May 1983 156 158
- Chen, Y.J. Ravani. B. “Offset Surface Generation and Contouring in Computer-Aided Design,” ASME Journal of Mechanisms, Transmissions, and Automation in Design March 1987 109 133 142
- Choi, B.K. Jun, C.S. “Ball-End Cutter Interference Avoidance in NC Machining of Sculptured Surfaces,” CAD 21 6 July/August 1989 371 378
- Drysdale, R.L Jerard, R.B. Schaudt, B. Hauck, K. “Discrete Simulation of NC Machining,” Algorithmica 4 January 1989 33 60
- Faux, I.D. Pratt, M.J. Computational Geometry for Design and Manufacture Ellis Horwood New York, N.Y. 1981
- Farin, G. Curves and Surfaces for Computer Aided Geometric Design - A Practical Guide Academic Press, Inc. 1988
- Gan, J.G. Lee, W.J. Woo T.C. “Clustering of Sculptured Surfaces to Minimize Set-Ups in Machining,” The 15th Design Automation Conference ASME Montreal, Canada Sep. 18 1989
- Hunt, W.A. Voelcker, H.B. “An Exploratory Study of Automatic Verification of Programs for Numerically Controlled Machine Tools,” University of Rochester Production Automation Project TM-34 January 1982
- Hong, Y.S. Lee, W.J. “Development of NC Machining Support System DIPPS,” Automotive Technology and News Daewoo Motor Co., Ltd. 33 43 48
- Jerard, R.B. Drysdale, R.L. Hauck, K. Schaudt, B. Magewick, J. “Methods for Detecting Errors in Numerically Controlled Machining of Sculptured Surfaces,” IEEE CG&A January 1989
- Kim. D.H. Choi, B.K. “Calculation of Economic CL Data for Sculptured Surface Machining,” Journal of the Korean Institute of Industrial Engineers 9 2 27 35
- Lee, W.J. “The Understanding of CAD/CAM and its Application to Automotive Industry,” Technical Seminar '90 on Computer Graphics and CAD/CAM KOEX Sep. 14 1990 Research Committee on Computer Graphics and Design Automation 91 108
- Lee, W.J. “Quality Analysis of Surfaces Generated by CAD” Automotive Technology and News Daewoo Motor Co., Ltd. 38 1 8
- Lee, W.J. “NC Machining by CAM System,” Automotive Technology and News Daewoo Motor Co., Ltd. 34 12 25
- Loney, G.C. Ozsoy, T.M. “NC Machining of Free From Surfaces,” CAD 19 2 March 1987 85 90
- Pressman, R.S. Williams, J.E. Numerical Control and Computer Aided Manufacturing John Wily & Sons New York 1977
- Qiulin, D. Davies, B.J. Surface Engineering Geometry for Computer-Aided Design and Manufacture John Wiley & Sons 1987
- Tiller, W. Hanson, E.G. “Offsets of Two-Dimensional Profiles,” IEEE CG&A Sep. 1984 36 46
- Van Hook, T. “Real-Time Shaded NC Milling Display,” Computer Graphics (Proc. SIGGRAPH) 20 4 Aug. 1986 15 20