Command Generation for Three-Axis CNC Machining

[+] Author and Article Information
Jui-Jen Chou, D. C. H. Yang

Department of Mechanical, Aerospace and Nuclear Engineering, University of California, Los Angeles, CA 90024

J. Eng. Ind 113(3), 305-310 (Aug 01, 1991) (6 pages) doi:10.1115/1.2899701 History: Received November 01, 1989; Revised June 01, 1990; Online April 08, 2008


This paper investigates the command generation for three-axis CNC machining. In the integration of CAD and CAM, it is necessary to relate machine tool dynamics and control in a CAM process to the geometrical data in a CAD model. The data stored in a CAD model is usually static in nature and represented by unitless parameters. Yet, in machine tool motion and control, the data should be transformed into a time dependent domain. In this paper, the geometrical properties of a cutter path, including position, tangent, curvature and torsion are analytically related to the motion dynamics of a machine tool including feedrate, acceleration, jerk and driving force. The information about feedrate, acceleration and driving force is needed for command generation. Jerk analysis can be used for cutting quality analysis.

Copyright © 1991 by The American Society of Mechanical Engineers
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