Transactions of Materials and Heat Treatment

Title：Optical design of flashed cold die forging of car used bevel gear

Authors： JIN Jun-song~(1) XIA Ju-chen~(1) HU Guo-an~(1) WANG Xin-yun~(1) CHEN Xia~(1) LI Da-Cai~(2) HU Ming-fa~(2)(1.State Key Laboratory of Plastic Forming Simulation and Die & Mould Technology Huazhong University of Science and Technology Wuhan Hubei 430074 Chin

Unit：

KeyWords： bevel gear flashed cold forging die finite element

ClassificationCode：TG316

year,vol(issue):pagenumber：2006,31(3):96-99

Abstract：

Differential mechanism gear is a key part on car,finished gears whose teeth profile accuracy is high enough to be installed on car can be produced by flashed cold die forging,but the high strength and high resistance to deformation of the gear material lead to a serious stress in the die,especially the stress concentration on the die teeth tip,thus the teeth tip is very easy to collapse and rupture.In this paper,flashed cold forging die for car differential mechanism gear is studied by force analysis,finite element method and experiment during the forging procedure;Two kinds of die structure are compared,and an appropriate die structure which can efficiently prolong the life of die is obtained.

Funds：

湖北省科技攻关项目(2005AA10B19)

Reference：

[1]周琨,陈国学.伞齿轮精密成形模具变形的数值模拟分析[J].塑形工程学报,2002,9(3):74 77,73.
[2]李洪波,骆俊廷,杨学礼.温挤齿轮模具尺寸修正的理论分析及有限元模拟[J].模具技术,2001,(4):1 3,7.
[3]Cai J,Dean T A,Hu Z M.Alternative die design in net-shape forging of gears[J].Journal of Materials ProcessingTechnology 2004,150(1 2):48 45.

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