轿车左转向节锻造工艺的模拟研究

针对轿车左转向节是带细杆的叉形件,同时兼有叉类、盘类和杆类零件的外形特点,分析其成形的工艺特点,进行工艺计算,确定工艺方案为头部镦粗—杆部拔长—预锻—终锻.利用有限元软件对成形过程进行模拟,得到飞边均匀的终锻成形件,并对模拟得到的应力场、应变场和载荷等信息进行分析.结果表明,各工序变形较为均匀,应力变化正常,没有出现破坏现象;最终锻件完全充满终锻模膛,没有出现缺料、折叠等缺陷,而且飞边均匀.

FEM Simulation of Automobile Knuckle Forging Process

According to the left automobile knuckle features with the thin rod fork, plate and rod, the analysis of the knuckle forming process and process calculation are conducted, the process of upsetting head, stretching rod, preforging, finish forging is determined. The forming process is simulated by FEM and then finish forging parts with the uniform flash are obtained. And the stress and strain fields and load are analyzed. The results showed that, deformation of each working procedure is relatively uniform, stress change is normal, and damage is avoided; the final forging without defects such as lack of materials and folding is completely full of final forging die, and then the flash of the forging is uniform.