Transactions of Materials and Heat Treatment

Title：Analysis on cold extrusion molding process and mold design of involute spline

Authors： Lin Guixia

Unit： Suzhou Institute of Trade & Commerce

KeyWords： involute spline cold extrusion numerical simulation process parameters combination dies

ClassificationCode：

year,vol(issue):pagenumber：2014,39(1):104-109

Abstract：

Based on the method of numerical simulation, the diameter of steel billet, the effect of the lead length and the calibrating strap length of concave die were discussed on the involute spline cold extrusion forming with the help of a finite element software Deform-3D. The simulation results show that the forming force and the too th profile are increased by increasing the diameter of steel billet, while the profile precision of tooth is influenced by springback when diameter is too big. The lead length has effects on the cold extrusion formability, and the extrusion process will be unstable or can not be formed if the lead length is too short. There is a significant effect for calibrating strap length on forming quality and forming force of spline. The tooth is fuller, the tooh space is deeper and the forming force is increased with the increase of calibrating strap length of concave die. Then a set of multi-layer composite concave die was optimized by finite element analysis for spline cold extrusion. The processing tests show that analysis is accurate, and die design is feasible.

Funds：

苏州经贸职业技术学院自然项目（JMYZ1102）

林桂霞（1980-），女，硕士，讲师

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