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针对汽车后轴支架,进行锻造过程三维有限元模拟和工艺、模具设计。采用刚粘塑性有限元模拟技术,得到锻件内部应力场、应变场等参数,分析了这些参数对锻件塑性变形的影响。在此基础上,对此类锻件传统的锻造工艺进行了改进,将预锻工序由开式模锻改进为封闭飞边闭式模锻。同时,模具设计重点从预成形设计考虑,给出了合理的制坯模具设计。在40MN热模锻压力机上进行了试验,试验表明,模拟结果和实际成形过程吻合良好。
For automotive rear axle bracket, forging process three-dimensional finite element simulation and technology, mold design. Adopting rigid viscoplastic finite element simulation technology, parameters such as internal stress field and strain field of forging are obtained, and the influence of these parameters on plastic deformation of forging is analyzed. On this basis, the traditional forging process of this kind of forgings is improved, and the pre-forging process is improved from the open die forging to the closed flash die closed forging. At the same time, the mold design focus from pre-formed design considerations, gives a reasonable blank design. Experiments were carried out on a 40MN hot die forging press. The results show that the simulation results are in good agreement with the actual forming process.