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.
College and Department
Ira A. Fulton College of Engineering and Technology; Mechanical Engineering
BYU ScholarsArchive Citation
Cheatham, Robert M., "A Geometry-Based Motion Planner for Direct Machining and Control" (2007). All Theses and Dissertations. 1411.
motion planning, motion planner, motion profile, constant speed, parametric interpolator, predictor-corrector, parametric machining, speed profile, dynamics, NURBS, Bezier, jerk-limited, machine control, DMAC, direct control, CNC, machining