农业机械学报2001，Vol.32Issue(1)：95-98,4.
直齿圆柱齿轮冷精锻成形过程数值模拟分析
A Numerical Simulation of Cold Precision Forging Process for Spur Gears
寇淑清 1杨慎华 2赵勇3
作者信息
- 1. 吉林大学辊锻工艺研究所 副研究员,
- 2. 吉林大学辊锻工艺研究所副所长 教授
- 3. 吉林大学辊锻工艺研究所 助理研究员
- 折叠
摘要
Abstract
A working load is remarkably increased and material filling into the die cavity is extremly difficult during a cold precision forging process of a spur gear. In such a process, the plastic flow of material is quite complex and the product quality is very difficult to control. So, the prediction of the deformation behaviors, the determination of technological specifications and the design of a die have to be followed by a study of numerical simulation. In this paper, a 3D large deformation and elasto-plastic FEM was adopted to numerically simulate a cold precision forging process of a spur gear. With the FEM, a numerical analysis of the flow pattern in a two-step forging process was performed. The two-step forging process consists of a closed die forging as the pre-forging stage and divided flow forging or divided flow forging as the final stage. The results of the numerical simulation and the technological experiments showed that the divided flow, especially the constrained hole divided flow applied in the final forging stage was very effective on decreasing the forging load and improving the corner filling. A scheme of matrix transformation can maintain symmetric stiffness matrices, which increases the solving efficiency of the equations and is reasonable and valid when a slipping constraint and friction boundary condition is introduced into a 3D problem.关键词
直齿圆柱齿轮/冷精锻/有限元法/数值模拟分类
矿业与冶金引用本文复制引用
寇淑清,杨慎华,赵勇..直齿圆柱齿轮冷精锻成形过程数值模拟分析[J].农业机械学报,2001,32(1):95-98,4.
