A Real-time NURBS Curve Trajectory Generator for High-Speed CNC Machining

چکیده مقاله

The impossibility of exact arc length computation for NURBS curves makes it difficult to generate a trajectory with desired profiles in real time This paper presents a new trajectory generation method that estimates an admissible path increment and determines the initiation of the final deceleration stage according to the distance left to travel estimated at every sampling time, resulting in exact feedrate trajectory generation through jerk limited acceleration profiles for the NURBS curves The proposed approach allows the feedrate profile to be dynamically adjusted according to chord error which is a geometrical path constraint for the curved path

کلیدواژه‌ها

نویسندگان

M.M Emami

Department of Mechanical Engineering,Amirkabir University of Technology TehranPolytechnic , Tehran, Iran

B Arezoo

Dep of Mechanical Engineering, Assistant Professor

Emami, M.M and Arezoo, B,1384,A Real-time NURBS Curve Trajectory Generator for High-Speed CNC Machining,01st Tehran International Congress on Manufacturing Engineering (TICME2005),Tehran

ارائه‌شده در

مجموعه مقالات اولین کنفرانس بین المللی و هفتمین کنفرانس ملی مهندسی ساخت و تولید1 فروردین 1384 · تهران