Optimum die-surface design of gear-spline extrusions using a general surface model

Rong Shean Lee, Jinn Jong Sheu, Yeong Jou Gau

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In this paper, an integrated CAD/CAM/CAE method for the optimum die-surface design of a stream-lined die for straight-sided gear-spline extrusion has been proposed. The die surface is represented by a general surface model. By applying the upper-bound method and the variable metric optimisation scheme, parameters of the die surface, along with those of the velocity field, have been optimised with respect to the minimum extrusion-pressure required. The optimum die-surface was manufactured subsequently, using NC machining to produce the EDM electrode. Extrusion tests for straight-sided gear-splines were then performed, to obtain the extrusion load and the experimental grid-deformation, the theoretical predictions for gear-spline extrusion being found to be in close agreement with the experimental results. Finally, the optimum die-designs for various process conditions are suggested based on the results obtained by the proposed design method.

Original languageEnglish
Pages (from-to)365-382
Number of pages18
JournalJournal of Materials Processing Tech.
Volume28
Issue number3
DOIs
Publication statusPublished - 1991 Dec

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Computer Science Applications
  • Metals and Alloys
  • Industrial and Manufacturing Engineering

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