Principal Curvature Alignment Technique for Machining Complex Surfaces

Author:

Bedi S.1,Gravelle S.1,Chen Y. H.1

Affiliation:

1. Department of Mechanical Engineering, University of Waterloo, Waterloo, Ontario, N2L 3G1 Canada

Abstract

Machining complex three dimensional surfaces is a challenging task. This paper presents two methods of machining these surfaces on a 4 and 5 axis machine, using a toroidal shaped cutter. The methods propose to align the principal axis of curvature of the machining surface with that of the machined surface in order to increase the volume of material removed. The increase in material removal at a point reduces the scallop height. Thus, fewer passes are required to achieve the same surface finish.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Reference13 articles.

1. Vickers G. W. , BediS., and HawR., “The Definition and Manufacture of Compound Curvature Surfaces Using G-Surf,” Computers in Industry, Vol. 6, 1985, pp. 173–183.

2. Vickers, G. W., and Bedi, S., “Generating Smooth Curved Surfaces from Sparse Irregular Data,” Computers in Mechanical Engineering, Jan. 1988, pp. 52–58.

3. Vickers G. W. , and QwanK. W., “Ball-Mills Versus End-Mills for Curved Surface Machining.” ASME JOURNAL OF ENGINEERING FOR INDUSTRY, Vol. 111, Feb. 1989, pp. 22–26.

4. Be´zier, P., The Mathematical Basis of the UNISURF CAD System, Butterworth, London, 1986.

5. Bartels, R., Beatty J., and Barsky, B., An Introduction to Splines for Use in Computer Graphics and Geometric Modelling, Morgan Kaufmann, 1987.

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