Toolpath Generation and Error Analysis for Five-Axis NC Machining of Spatial Cam

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Abstract:

The geometry of spatial cam is normally generated with form-mill cutter by special multi-axis machine and software. To obtain the flexibility of machining process, this paper presents an interference-free toolpath generating method for rough and finish machining of the spatial cam. The relationship between the cam profiles and the meshing element's surface is established by the conjugate surface theory. Since the meshing element is in tangency with the spatial cam, the notion of the proposed collision-free method is that the cylindrical-end mill is confined within the meshing element. In the machining process, the cutter location for rough and finish machining is derived. The principal induced normal curvatures of the cam surface and the cutting tool both are evaluated to offer the criterion for interference checking. To ensure the machining accuracy, the mathematical errors are used as a basis for generating appropriate toolpaths. The cutting simulations with solid model are performed to verify the generated toolpath. It is also verified through the real cut on a five-axis machine tool.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/asl.2012.3983

Publication date: July 1, 2012

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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