Title :
A model-based online control of optimal fixturing process
Author :
Wang, Y.F. ; Fuh, J.Y.H. ; Wong, Y.S.
Author_Institution :
Dept. of Mech. & Production Eng., Nat. Univ. of Singapore, Singapore
Abstract :
This paper presents an off-line simulation approach that aims to provide a model-based online control of a proposed intelligent fixturing system. The intelligent fixturing system is to adaptively adjust the clamping forces to optimal values during the machining process. Using the off-line simulation, an analytical fixture-workpiece model and an optimization method have been developed for the control of a fixturing system. This simulation can also be applied to evaluate the performance of a fixturing system and determine optimal clamping forces for a given fixture configuration. Experiments have been conducted to verify the proposed model. The fixturing system can be applied in a high-precision machining environment where the workpiece deformation due to over-clamping and improper machining is a major concern
Keywords :
CAD/CAM; computerised numerical control; digital simulation; force control; knowledge based systems; machining; minimisation; clamping forces; intelligent fixturing system; machining process; model-based online control; off-line simulation; optimal fixturing process; over-clamping; Analytical models; Clamps; Fixtures; Intelligent sensors; Intelligent systems; Machine intelligence; Machining; Optimal control; Optimization methods; Sensor systems;
Conference_Titel :
Robotics and Automation, 1997. Proceedings., 1997 IEEE International Conference on
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3612-7
DOI :
10.1109/ROBOT.1997.619167
