Development and analysis for the large-scale tee-forming process

In this paper, a different manufacturing technology for large-scale tee-for ming is proposed by using a tooling set which can be assembled in a vertica l or horizontal hydraulic press. A simplified analysis model is also propos ed to predict material flow and fracture during forming. The following sub- titles are included, namely: (a) computer-aided parametric tooling design m odule, (b) computer-aided engineering of tee-forming process, (c) design gu ides for preparing a tubular biller with an elliptical hole by considering stress concentration and wall thickness reduction. Finally, an industrial c ase study is discussed as a demonstration example, in which a coincidence b etween the finite element analysis and the proposed simplified model is obt ained. (C) 2000 Published by Elsevier Science S.A.