汽车前围下横梁冲压成形工艺参数试验研究

Study on Stamping Process Parameters for Front Beam Connecting Part Under the Vehicle

优化金属冲压成形的工艺参数对提高汽车零部件质量尤为重要,以汽车前围下横梁为例,选择压边力、凸凹模间隙以及板料尺寸以正交试验的方法对成型件的质量进行优化研究,以拉薄率、面位置间隙作为结果考察依据,试验结果表明:压边力为6MP,凸凹模间隙为1.8mm,板料尺寸为(320×815)mm的汽车前围下横梁工艺参数是最优组合;优化的试验结果说明,合理的工艺参数可在节省材料的同时降低板料的拉薄率和回弹造成的影响,增加成型件的安全性与可靠性,对零件生产有指导意义。

It＇s particularly important to optimize metal stamping process parameters for the improvement of car＇s quality. In this paper, it takes the front beam connecting part under the vehicle for instance, choosing blank holder force, clearance between punch and die and sheet metal size as materials to study the quality of molding through the orthogonal experiments method and the results were investigated by using the thin rate and the plane position gap. The experiment result shows that： when blank holder force is 6MP, clearance between punch and die is 1.8mm, and sheet metal size is （320 × 815）mm, it＇s an optimal machining parameter of the front beam connecting port under the vehicle. The result also shows that reasonable process parameters can reduce the influence of the sheet reduction rate and springback while saving materials, and increase the safety and reliability of molding, which will be a guiding significance for parts production.