关键词: 快速夹具, 夹持点, 自动规划, 规约化, 弯曲变形, 计算机辅助设计

Abstract: To solve the deformation of thin-walled parts fixed by fixtures, automatic planning approach of clamping points of thin-walled parts was studied. First, the part was projected to datum plane to obtain two-dimensional boundaries. Fixture district of main clamping points was determined by simplifying boundaries. Then according to automatic planning rules of main clamping points, location of main clamping points was defined. Based on bending theory of thin-walled parts, deformation of barycenter areas and cantilever areas was calculated and analyzed. Location and number of auxiliary clamping points were determined, and automatic planning approach of clamping points was obtained. Finally, scientificalness of the theory and effectiveness of the approach were verified in some plastic casing parts.

Key words: rapid fixture, clamping points, automatic planning, simplify, bending-deformation, computer aided design