Abstract Three kinds of variational geometric constraints (VGCs) are presented based on TTRS theory. On the basis of the assembly information in CAD, mate tree is uniquely defined. The properties of mate tree are analyzed. Mate trees are linked by cross-referenced VGC to generate loop circuit (LC). Based on mate tree, the generation scheme of loop circuit and 3D assembly tolerance chains is put forth. A simple example is analyzed to show the scheme to be effective.
HU Jie, WU Zhao-Tong, YANG Jiang-Xin. Function-oriented Automatic Generation of 3D Assembly Tolerance Chains. Chinese Journal of Engineering Design, 2001, 8(3): 131-134.
