表面形状为自由曲面零件的装夹设计研究

表面形状为自由曲面零件的夹具设计是机械制造领域中的一个难点问题。但是，该类夹具的设计尚未引起广大夹具设计人员的充分注意，成功的设计范例也为数不多，这一现实已不能满足日益增长的自由曲面零件加工制造的要求。本文结合８６３／ＣＩＭＳ关键技术攻关项目“面向并行工程的计算机辅助夹具设计”的实践并加以扩展，重点讨论了该类夹具设计领域的零件装夹这一难点问题，并根据确定性定位理论与曲面理论给出了自由曲面零件上定位点的选取算法与夹紧点选取策略。

RESEARCH ON FIXTURING DESIGN FOR RREE-FORM WORKPARTS

The fixture design for free-form workparts is a difficult problem in mechanical manufacturing domain. However, this kind of fixture design has not been caught much attention by many researchers working in the field of fixture design, and few successful examples are reported in the relative publications. In order to partly solve the difficulty in the fixture design for free-form workparts, the authors of this paper emphasized an important and crucial problem, i.e. the problem of fixturing. After some solid mathematics inferences, a feasible algorithm for the selection of locating and clamping points on free-form workparts is put forward based on the theory of deterministic locating, optimal clamping, and free form. At the end of this paper, an example is given using this algorithm.