Cold rotary forging is a novel metal forming technology which is widely used to produce the high performance gears. Investigating\nthe micro structure and mechanical property of cold rotary forged gears has a great significance in improving their service\nperformance. In this study, the grain morphology in different regions of the spur bevel gear which is processed by cold rotary forging\nis presented. And the distribution regulars of the grain deformation and Vickers hardness in the transverse and axial sections of\nthe gear tooth are studied experimentally. A three-dimensional rigid-plastic FE model is developed to simulate the cold rotary\nforging process of a spur bevel gear under the DEFORM-3D software environment. The variation of effective strain in the spur\nbevel gear has been investigated so as to explain the distribution regulars of the micro structure and Vickers hardness. The results of\nthis research thoroughly reveal the in homogeneous deformation mechanisms in cold rotary forging of spur bevel gears and provide\nvaluable guidelines for improving the performance of cold rotary forged spur bevel gears.
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