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以某汽车支架零件的成形工艺为例,研究了特殊形状结构零件在“先落料冲孔,后弯曲成形”的成形工艺中存在的侧冲孔废料难以卸除及模具寿命低等问题。分析了带孔板料毛坯在冲压成形过程中产生的变形对成形件质量的影响,以确保成形件的结构形状尺寸能够满足图纸要求。利用基于CAE(Computer Aided Engineering)的钣金成形有限元分析FASTFORM软件,根据成形件的数模及成形材料的属性,逆向展开输出成形产品精确的带孔板料毛坯,将数值模拟结果产生的板料毛坯的边形与孔形尺寸,作为落料冲孔模具凸、凹模的边形与孔形的设计依据,可有效缩短该类模具的设计周期,降低生产成本,提高产品质量与企业的市场竞争力。
Taking the forming process of a car bracket part as an example, the problems of difficult to remove side punching waste and low mold life in the forming process of special punching and punching and post-bending forming are studied. . The influence of deformation caused by the punching process on the quality of the formed parts was analyzed to ensure that the structural shape and size of the formed parts could meet the requirements of the drawings. FASTFORM software is used to analyze the sheet metal formed by finite element method based on CAE (Computer Aided Engineering), and according to the properties of the die and the forming material, The blank shape and hole size, as blanking punching die convex, concave and convex side of the hole-shaped design basis, which can effectively shorten the design cycle of such molds, reduce production costs and improve product quality and corporate Market Competitiveness.