Sculptured surface machining using triangular mesh slicing

✍ Scribed by Sang C. Park

• Book ID: 104109985
• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 874 KB
• Volume: 36
• Category: Article
• ISSN: 0010-4485
• DOI: 10.1016/s0010-4485(03)00114-3

✦ Synopsis

In this paper, an optimized procedure for tool path generation in regional milling is presented. The proposed procedure computes tool paths by slicing a CL-surface (Cutter Location surface), which is a triangular, mesh containing invalid triangles. Tool path generation consists of two steps: firstly, it obtains a set of line segments by slicing the triangular mesh with two-dimensional geometric elements (slicing elements), and, secondly, it extracts a valid tool path from the line segments by removing invalid portions. Two algorithms based on the slicing elements are presented: a 'line projection' algorithm based on the plane sweeping paradigm, which works efficiently by using the characteristics of a monotone chain; and a 'curve projection' algorithm for the projection of curves, which transforms the curve projection problem into a line projection problem by mapping the XYZ-space of the cylinder surface to the TZ-plane of the unfolded cylinder. The proposed procedure has been implemented and applied to tool path generation in regional milling. Performance tests show the efficiency of the proposed procedure.