A process-sequence design of an axle-housing by cold extrusion using thick-walled pipe

摘要

This study is concerned with the method of production of an axle housing that covers an axle shaftwith differential gears. The process sequence of the current five-stage cold extrusion process isinvestigated for the purpose of improving the sequence design. The new process has distinctadvantages over the conventional process. It has a reduced process-sequence without buckling of theworkpiece or overloading of tools. Also, it permits an optimal press selection to reduce the equipmentcost. Based on the results of simulation of the current five-stage process, design strategy forimproving the process-sequence is developed using the thick-walled pipe. The finished product of anaxle housing is produced in two operations with one annealing treatment, whilst the conventionalsequence consists of five operations with one treatment. Numerical results show that the newly-proposed process with selected presses is the most economical way to produce the required part.