International Journal of Precision Engineering and Manufacturing

Korean Society for Precision Engineering (한국정밀공학회)
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Upper Bound Analysis for Near-net Shape Forging of a Crown Gear Form

  • Lee, Seung-Dong (Department of Machine Design, Toungjin Junior College, Taegu 702-022, South Korea) ;
  • Kim, Won-Il (School of Mechanical and Automation Engineering, Kyungnam University, Masan, Kyungnam 631-701, South Korea) ;
  • Kim, Yohng-Jo (School of Mechanical and Automation Engineering, Kyungnam University, Masan, Kyungnam 631-701, South Korea)
  • Published : 2000.12.01
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Abstract

A kinematically admissible velocity field for near-net shape forging of a crown gear form is proposed. This takes into account the profiled shape of the teeth chosen by approximating these kinematically as radially straight taper teeth, (rectangular and trapezoidal teeth). The upper bound to the forging load, the relative forging pressure and the deformed configurations, with both the initially solid circular cylindrical and hollow billets, are predicted using the velocity field at varying incremental punch movements considering differing frictional factors. These and other results are given and commented upon.

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