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结合塑性成形理论,采用Deform模拟软件,以Z型触指为研究对象,对零件工艺特点、成形过程中金属充填型腔状况、金属流动趋势、应力大小作了分析、模拟。结果显示,在触指的两端和对称制耳处金属充填相对困难,在弯曲变形区域零件的应力最大。通过工艺优化,最终确定触指零件成形大体分为两个方案,一步触指整体成形和两工序成形;前者采用一模一腔或者一模多腔成形,挤压件只需简单的后处理;后者首先需制备零件的中间坯,最后经弯曲整形工序得到最终零件。
Based on the theory of plastic forming, Deform simulation software was used to analyze and simulate the process characteristics of parts, the state of metal filling cavity, the flow tendency of metal and the stress of Z-type finger. The results show that it is relatively difficult to fill the metal at both ends of the contact finger and the symmetrical ear, and the stress of the part in the bending deformation region is the largest. Through process optimization, the final shape of the touch-finger parts can be roughly divided into two programs, one-step touch-finger integral forming and two-step forming; the former is formed by one mold cavity or one mold multi-cavity and the extrusion only needs simple post- The latter first of all need to prepare parts of the middle billet, the final bending and shaping process to get the final part.