Automated modular fixture planning based on linkage mechanism theory

Authors:
Yuguang Wu;Shuming Gao;Zichen Chen
Affiliations:
State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China and School of Mechanical and Electrical Engineering, Hohai University, Changzhou 213022, PR China;State Key Laboratory of CAD&CG, Zhejiang University, Hangzhou 310027, PR China;Institute of Advanced manufacturing engineering, Zhejiang University, Hangzhou 310027, PR China
Venue:
Robotics and Computer-Integrated Manufacturing
Year:
2008

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Abstract

A new approach to automated modular fixture planning is presented. The approach identifies all the location plan candidates of a workpiece using linkage mechanism theory and excludes the infeasible location plan candidates by evaluating their accessibility and fixturability. The algorithms for analyzing accessibility and fixturability and generating feasible clamp positions of a fixture plan are developed based on several new concepts including IRC triangle, locator visible cone, etc. The approach is capable of handling the workpiece whose side clamping faces consist of planar faces or cylindrical faces. To illustrate the effect of the approach, some test results are described.