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在金属塑性成形中加入振动,可以有效降低材料变形抗力并提高产品质量。以薄壁铜管游动芯头拉拔为研究对象,分析了振动对铜管拉拔过程中拉拔力的影响,并通过有限元分析软件MARC,对不同的工艺参数(拉拔速度、外模模角和芯头锥角)进行数值模拟。研究结果表明:针对本模型,存在一个最佳外模半锥角和芯头锥角组合(外模半锥角α为12°,芯头锥角β为9°),使得薄壁铜管游动芯头振动拉拔过程中的拉拔力最小,而拉拔速度对拉拔力的影响较小。
Vibration in the metal plastic forming, can effectively reduce the material deformation resistance and improve product quality. Taking the drawing of thin-walled copper traveling core as the research object, the influence of the vibration on the pulling force during copper drawing process was analyzed. Through the finite element analysis software MARC, the different process parameters (drawing speed, Die angle and cone angle) for numerical simulation. The results show that for this model, there is a combination of the best outer half cone angle and the core cone angle (the half cone angle α is 12 ° and the cone angle β is 9 °) Moving core vibration pulling the smallest drawing force, while the drawing speed on the pull force less affected.