Numerical Simulation of Fine Blanking on Plane Blankholder
Fine blanking process on plane blankholder utilizes three tooling elements: a punch, a plane blankholder and an ejector to generate a highly compressive stress state and pure shearing forces to constraint the deformation of sbeetmetal within the narrow blanking clearance zone. Numerical simulation of fine blanking for steel 20 was performed using commercial FEM software DEFORM, and element deletion technology was used to model the initiation and propagation of crack. Besides, Normalized Cockroft&Latham ductile fracture model was taken into the prediction of the quality of shear surface. Material flow analysis was investigated with the respect to the blankholder and ejector force, and the influence of process parameters such as blanking clearance and die edge radius on shear surface was discussed in this paper. Thus, effect of blankholder and ejector forces on the material flow characteristics, the relationship between the process parameters and burnish zone ratio are revealed, which may be helpful to the development of fine blanking.
plane blankholder fine blanking material flow blanking clearance
Li Yan-tao Luo Yun-hua Dong Wen-zheng Chen Lei
State Key Laboratory of Material Processing and Die Mould Technology, Huazhong University of Science Mechanical Engineering College of Xiangtan University, Xiangtan 411105, China
国际会议
2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)
长沙
英文
22-25
2010-12-18（万方平台首次上网日期，不代表论文的发表时间）