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RESEARCH PAPERS

A Solid Modeller Based Milling Process Simulation and Planning System

[+] Author and Article Information
A. D. Spence, Y. Altintas

The University of British Columbia, Department of Mechanical Engineering, Vancouver, BC, Canada, V6T 1Z4

J. Eng. Ind 116(1), 61-69 (Feb 01, 1994) (9 pages) doi:10.1115/1.2901810 History: Received June 01, 1992; Revised December 01, 1992; Online April 08, 2008

Abstract

A Constructive Solid Geometry (CSG) based process simulation system is developed for 2 1/2 axis milling. Along each path, the cutter is intersected with the individual geometric primitives describing the part. The cutter-part intersection data are then merged using the CSG part description tree, and retained to be accessed during the milling process simulation. Using the stored intersection data and an analytic reformulated mechanistic milling process model, the cutting forces and dimensional accuracy of the parts are simulated before the machining actually takes place. By using an inverse solution for the milling expressions, the feed rate is automatically scheduled to satisfy force, torque, and part dimensional error constraints. The accuracy and efficiency of the milling process simulation model are demonstrated experimentally.

Copyright © 1994 by The American Society of Mechanical Engineers
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