Transactions of Materials and Heat Treatment

Title：Analysis on cold extrusion process for spline housing

Authors： Zhou Min

Unit： Chongqing College of Electronic Engineering

KeyWords： spline housing cold extrusion punch guide zone floating mandrel

ClassificationCode：TG376.3

year,vol(issue):pagenumber：2015,40(6):94-97

Abstract：

For the problem of the punch fracture when the spline housing extruded internal spline, the FE model of internal spline was built and the numerical simulation was carried out. The simulation result shows that there is a great change between the section of guide zone and the section of tooth zone, and the stress concentration occurs at the transition zone of the fillets is easy to fracture. The solving methods are to remove the guide zone of punch and increase the floating mandrel to guide in the die. Further, the improved process is simulated numerically. Thus, there is no stress concentration on the punch and forming defects on the spline housing. The technology experiment proves that the improved process can avoid the punch fracture when the internal spline is produced by anti-extrusion and the service life of die is extended.

Funds：

周敏（1975-），女，硕士，讲师

Reference：

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