scispace - formally typeset
Search or ask a question

Showing papers by "Shiro Kobayashi published in 1993"


Book ChapterDOI
TL;DR: In this paper, a methodology for systematic process sequence design, considering requirements for material formability, defects-free metal flow and economic die manufacturing, in addition to the geometrical requirement, is presented.
Abstract: A goal of research in manufacturing is to accomplish proper design and control of processes for producing required parts most economically. One of the most important aspects of process design in metal forming is design of preforms and process sequence. The research reported in this paper is a development of the methodology for systematic process sequence design, considering requirements for material formability, defects-free metal flow and economic die manufacturing, in addition to the geometrical requirement. The approach consists of evaluation of the cases where a process sequence has been established and development of design strategies for improved sequence for those cases, using extensively the capabilities of the finite element method for forward simulation and backward tracing schemes. The approach is illustrated in an example, and specific applications of the method are indicated for the cases in forging, extrusion, deep drawing and sheet metal forming.

5 citations