Research on the Method of Parametric Design for Group Fixture

To meet the demand of the parametric generation of fixture and group fixture design,parametric design of standard components is conducted with reusable library based on the comparison between existing parametric design methods of UG,which is convenient for expansion and also supports intelligent assembly.As for non-standard components,graphics-template-based parametric design is realized by secondary development,which can maximize the reuse of knowledge and experience of fixture design.In addition,product-level parametric approach based on assembly relationships and association drivers is built after parametricly designing the parts.Besides,the group fixture library for typical cams is established using the method of parametric design for group fixture proposed in this paper.The effectiveness of the proposed approach in realizing parametric design for fixture is verified by the example of a cam fixture.