Transactions of Materials and Heat Treatment

Title：Technical research on cold extrusion of large size internal gear

Authors： LI Jian-ping XIA Xiang-sheng WAN Yuan-yuan TAO Jian-quan CHE Lu-chang

Unit： Chongqing College of Electronic Engineering No.59 Institute of China Ordnance Industry

KeyWords： large size internal gear cold extrusion numerical simulation

ClassificationCode：TG376.3

year,vol(issue):pagenumber：2013,38(3):7-11

Abstract：

The numerical simulation was conducted for the extrusion process of the large size internal gear, and the effects of stock size, friction coefficient and punch inlet angle on extrusion deformation were studied, and extrusion process parameters were optimized. Results show that extrusion performance is affected notably by stock size, friction coefficient and punch inlet angle. When the diameter of stock aperture was between reference diameter of internal gear and the diameter of punch tooth root circle, the internal gear was filled evenly and fully. Cold extrusion test was carried out for the large size internal gear using the optimized parameters obtained. Results show that the technology for cold extrusion of large size internal gear is reasonable.

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Reference：

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