Metal working – Method of mechanical manufacture – With testing or indicating
Patent
1996-10-03
1998-06-30
Bryant, David P.
Metal working
Method of mechanical manufacture
With testing or indicating
29464, 29701, 29705, B23Q 1700
Patent
active
057715530
ABSTRACT:
An error reduction and accommodation method and system can be used in an automated assembly environment. This method and system use a simple localized calibration process devised to improve similarity between an actual device and a simulated model when an off-line programming technique is used. The system uses grid-hole tables with modular fixtures holding the workpieces. The grid-hole table has round holes instead of screw holes or T-slots and allows modular fixtures with round pins to be placed on the grid-hole table with greater precision. A compliant coupling which is able to accommodate any small error in the system and when used with any end-tool, allows the assembly robot to carry out tasks within the modular system. The use of the grid-hole table and modular fixtures allows the robot, once taught the grid-hole table and the modular fixtures, to be subsequently programmed off-line to carry out any tasks with any standardized modular fixture placed any where on the grid-hole table. The modular fixtures easily slide into any selected grid-holes as required and may be used without further clamping or may be clamped to the grid-hole table, if so desired.
REFERENCES:
patent: 5539975 (1996-07-01), Kukuljan et al.
J.J. Mills, B.L. Huff, T. Criswell and D.H. Liles, The Dynamically Reconfigurable Assembly System: Implementation Issues The Institution of Engineers, Australia 1993 International Conference on Assembly, Adelaide, 22-24 Nov. 1993, pp. 27-34.
Tian S. Sim et al. "`Lock & Free` Assembly Concept--An Effective Way to Aid Vertical Automated Assembly", The Third Industrial Automation Exhibition and Conference TS-02, Singapore, 1994, seven pages.
Tian S. Sim et al. "Compliant Eng'effector Coupling (CEEC)", The first Chinese World Congress on Intelligent Control and Intelligent Automation, Aug. 26-30, 1993, eight pages.
Ang, Jr. Marcelo H.
Lim Kah Bin
Sim Tian Soon
Bryant David P.
Nanyang Polytechnic
National University of Singapore
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