Abstract

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.

Degree

MS

College and Department

Ira A. Fulton College of Engineering and Technology; Mechanical Engineering

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2007-07-13

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd1983

Keywords

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

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