Optimum Design of Assembled Cavity Dies for Precision Forging Process

DOI

10.2991/ism3e-15.2015.148How to use a DOI?

Abstract

For a given three-layer assembled die of cold precision forging gear, the optimum design was implemented based on the elastic solution of the thick-wall cylinder under the admissible tensile stress. A non-uniform interference fit structure was employed, and the minimum tangential tensile stress in the cavity was defined as the objective function. The inner radius r2 and outer radius r3 of the inner shrink ring, and the interference fit magnitude of matching faces between different layers were defined as variables of the objective function. These variables were optimized with MATLAB software package. The optimized results were verified with elastic-plastic finite element analysis (FEA). Then, forging experiments were conducted according to the calculated data with MATLAB and FEA results. Compared to conventional design methods, the optimized die structure with non-uniform interference fit is effective in prolonging the service life of gear dies more than ten times.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Junsong Jin
AU  - Xinyun Wang
PY  - 2015/11
DA  - 2015/11
TI  - Optimum Design of Assembled Cavity Dies for Precision Forging Process
BT  - Proceedings of the 2015 International Symposium on Material, Energy and Environment Engineering
PB  - Atlantis Press
SP  - 613
EP  - 621
SN  - 2352-5401
UR  - https://doi.org/10.2991/ism3e-15.2015.148
DO  - 10.2991/ism3e-15.2015.148
ID  - Jin2015/11
ER  -