关键词: 孔系组合夹具, 定位方案, 自动规划, 实施算法

Abstract: A general location mode for holes-system modular fixture was proposed. The location mode included all the configurations of contact edges among the located elements and the workpiece silhouette in the located plane. Each plan consisted of three locators rigidly attached to the lattice of holes on the base plate, and the locators were composed of circular locating pin and half-V and various combinations of these two locators. An implementation algorithm to construct the set of all feasible location plans was presented. The algorithm determined the position of locators in two steps; all possible located position sets of two locators were determined firstly according to the type and the position of the two given located edges of workpiece, then the third locator and all feasible located position set were defined after the workpiece were constrained partially by first two locators. The approach could be used to establish the whole available location plan sets for given workpiece and holes-system modular fixture configuration.

Key words: holes-system modular fixture, location plan, automatic planning, implementation algorithm