车灯反射镜充液拉深变液压力与变压边力研究
Research of Variable Fluid Pressure and Blank Holder Force of Hydromechanical Deep Drawing on Automobile Light Reflector
骆协海，雷君相，汪奇超，朱彦
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作者单位：上海理工大学
中文关键字：充液拉深；数值模拟；变液压力；变压边力；加载曲线
英文关键字：hydromechanical deep drawing; simulation; variable fluid pressure; variable blank holder force; load curves
中文摘要：本文采用充液拉深新工艺，以车灯反射镜为研究对象。首先提出运用变液压力和变压边力优化组合的方法，结合正交设计在板料成形数值模拟专用软件ETA /Dynaform5.6进行数值模拟，得到了最优液压力和压边力组合数值。其次根据毛坯在拉深过程中的成形情况，设计出了液压力和压边力加载曲线。最后通过实验验证了该加载曲线的拉深效果。结果表明，采用最优变液压力和变压边力进行拉深所得到的成形零件不起皱，不破裂，回弹量和减薄率均小，而且零件厚度分布较均匀。其研究成果对生产实践具有指导作用。
英文摘要：This paper was to adopt the new process of hydromechanical deep drawing, to research automobile light reflector as the object. First of all, it was proposed that using the method of the optimized variable liquid pressure and the variable blank holder force. Special software ETA / Dynaform5.6 of sheet metal forming simulation was adopted to proceed simulation which combining with the orthogonal design. The numerical combination of the optimal hydraulic pressure and blank holder force was gained. The second, according to concerning on the forming conditions of deep drawing process, the load curve of variable liquid pressure and the variable blank holder force was designed. The finally, the effect of the loading curve was verified by the experiment. The results showed that used the method of the optimized variable liquid pressure and the variable blank holder force to obtained forming parts of deep drawing. It can guarantee no wrinkle, no fracture, minimum springback and thinning ratio, and the thickness of parts distributed uniformity. The research result provided with a guiding role in the production practice.