汽车模具的虚拟调试

以汽车行李箱铰链安装板的模具设计为分析对象,进行了基于AUTOFORM的模具虚拟调试的研究。其中包括冲压成形数值模拟和分析,制订冲压工艺方案、确定工艺补充形式、确定合理的冲压参数,根据模拟的厚度变化、应力应变和材料FLD等方面的数据,以及成型过程中破裂和起皱的时间、部位及其几何尺寸,调整凸凹模圆角、毛坯料的尺寸、摩擦力、压边力、拉延筋的形状大小和工艺补充等相关参数,通过模具的虚拟调试,消除了冲压缺陷。

Virtual Debugging Technology for Automotive Mould

Taking the mould design of hinge installed plates which used for trunk lid of cars as an analyzed object,a study for mould virtual debugging was carried out based on AUTOFORM.It includes Stamping forming numerical simulation and analysis,planning stamping process projects,determining technical supplementary form,and determining reasonable Stamping parameters.According to the simulated data of the thickness changes,stress-strain and FLD materials and so on,and the time,location and geometry of the rupture and wrinkling in the process of molding,the relevant parameters,such as the radius of the round comer of concave-convex die,the size of rough material,Friction,blank holding force(BHF),the size and shape of draw-beads and technique supplement and so on,were adjusted.The stamping defects are eliminated by using virtual debugging of the mould.