Die design for cold precision forging of bevel gear based on finite element method
作者机构：State Key Laboratory of Material Process and Die & Mould Technology Huazhong University of Science and Technology Metal Forming Division Zhengzhou Research Institute of Mechanical Engineering
基 金：Project(2006BAF04B06) supported by the National Key Technology R & D Program of China Project(2005AA101B19) supported by the Key Technology R & D Program of Hubei Province, China
出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)
年 卷 期：2009年第16卷第4期
页 码：546-551页
摘 要：The finite element analysis （FEA） software Ansys was employed to study the stress state of the dies of both plane and non-plane parting face structures with uniform interference and the die of plane parting face structure with non-uniform interference. Considering the symmetry of the die, a half gear tooth model of the two-ring assembled die with 2.5 GPa inner pressure was constructed. Four paths were defined to investigate the stress state at the bottom comer of the die where stress concentration was serious. FEA results show that the change of parting face from non-plane to plane can greatly reduce the stress at the teeth tips of the die so that the tip fracture is avoided. The interference structure of the die is the most important influencing factor for the stress concentration at the bottom comer. When non-uniform interference is adopted the first principal stress at the comer on the defined paths of the die is much lower than that with uniform interference. The bottom hole radius is another important influencing factor for the comer stress concentration. The first principal stress at the comer of the plane parting face die with non-uniform interference is reduced from 2.3 to 1.9 GPa when the hole radius increases from 12.5 to 16.0 mm. The optimization of the die structure increases the life of the die from 100 to 6 000 hits.
主 题 词：die gear precision forging finite element analysis optimized design
学科分类：08[工学] 080401[080401] 0804[工学-材料学]
核心收录：
D O I：10.1007/s11771-009-0091-6
馆 藏 号：203681596...
