职称论文-汽车U形大梁侧冲孔排料改进.pdf

汽车 “U”形大梁侧冲孔排料改进 摘要:梁类零件是车身零件中最重要的结构件之一，它的存在保证了白车身的承载能力，以 及车身自身的刚度。通常冲压生产的梁类零件有边纵梁，后纵梁，大梁等。本文研究的是横 截面为 “U”字形形态的大梁零件，属于深拉延、厚板料和高张力的细长零件。由于 “U” 形大梁的宽度仅有50mm，而 “U”形立壁面上又存在多处相对的孔，所以侧冲孔排废料是 一个大难题。本文以实例详细介绍 “U”形大梁侧冲孔排料的冲压工艺及模具结构改进。 关键词：U 形大梁 侧冲孔排废料 冲压工艺 模具结构 The car U shaped beam of side punching layout improvement The first author: Yang Jing, male, born in 1985, Hezhou Guangxi, assistant engineer, bachelor degree, mainly engaged in cold stamping parts of the automotive technology analysis and die design. the second author: Qin Ming-qiao, male, born in 1986, Guangxi, Guigang, assistant engineer, bachelors degree, mainly engaged in automotive stamping parts of the process analysis and die design. the second author: Wei Lin-tao, male, born in 1986, Guangxi, Guigang, assistant engineer, mainly engaged in automotive stamping parts of the process analysis and die design. Abstract:the beam parts are one of the most important parts of the body parts,and its existence andthe bodys stiffness of the body isensured.Usuallythe stamping beam parts productionwithside rails,after rails,beams and so on. Cross section of the beam parts of theU shape,which belongs tothe deep drawing,the thicksheet and hightension of slender parts. Due totheU shape of beamwidth is only 50mm,and theUshape stand there are many relative tothe porewallsurface,so the side punching waste is a big problem.This paper introduces the formof stamping process and die structure of theU shapeword beamside punching discharging improvement. Key words:The Ushaped beam; Side punching waste; Stamping process; Die structure 引言 艺图，图中1○0处2-Φ46 是对冲的侧冲孔。 汽车细长的 “U”字形大梁在冲压生产 中，往往因排料不畅，造成凹模套被涨裂， 冲头被折断，导致停线，从而给企业带来严 重损失的情况。本文结合生产企业对此问题 解决的改进方案作详细介绍。 1. 汽车几字大梁产品介绍 此大梁材质为 ST37-2 酸洗板，厚 图1 几字大梁产品及工艺图 t=2.0mm。图1 为 “U”字形大梁产品及工 2. 改造前的排料工艺和模具结构 图2 是改进前的冲压工艺，图3 是改进 前的模具结构。因产品的冲孔是水平0 度， 改进前是按产品的水平0 度布置侧冲的，由