A Geometry-Based Motion Planner for Direct Machining and Control A Geometry-Based Motion Planner for Direct Machining and Control

by Cheatham, Robert M

Abstract (Summary)
Direct Machining And Control (DMAC) is a new method of controlling machine tools directly from process planning software. A motion planning module is developed for the DMAC system that operates directly off path geometry without pre-tessellation. The motion planner is developed with the intent to process Bezier curves. The motion planning module includes a deterministic predictor-corrector-type curve interpolator, a dynamics limiting module, and a two-pass jerk-limited speed profiling algorithm. The methods are verified by machining an automotive surface in a clay medium and evaluating the resultant machine dynamics, feed rate, and chordal error throughout the machining process.
Bibliographical Information:


School:Brigham Young University

School Location:USA - Utah

Source Type:Master's Thesis

Keywords:motion planning planner profile constant speed parametric interpolator predictor corrector machining dynamics nurbs bezier jerk limited machine control dmac direct cnc


Date of Publication:04/02/2007

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