1引言
·冲模技术·
门铰链加强板冲孔切断模结构的改进
王南艳秦辉，李春阳
东风汽车股份有限公司轻型商用车分公司（湖北441004）
【摘要】通过对B07门铰链加强板第4工序旧模具凹模镶块崩裂、吊锲不回复以及制件相对孔位难以保证等问题进行分析，同时结合该工序的工艺内容，借模具复制的机会对模具结构进行了改进，改进后模具结构简单、强度增加、故障率低、维修方便，以及制件质量得到提高。
关键字：门铰链加强板：模具结构；改进
中图分类号：TG385.2
文献标识码：B
ImprovementofPunchingandCuttingDieStructure
with Door Hinge Reinforcing Plate
[Abstract] This paper discusses the issue of the old fourth die of BO7 door hinge reinforcing plate like die insert split, inclinedwedge no reduce and instability of relative hole location, By analyzing the process we improved the structure of this die while it was copyed. The improved die is simplified in structure, enforced in strength, with lower failure rate and more convenient maintenance while the parts quality was improved.
Key words: door hinge reinforcing plate; die structure; improvement
构设计的缺陷，该副模具磨损十分严重，每年维修保
门铰链加强板为轻卡通用加强件，其特点为制件形状复杂.板料较厚，冲孔数量多。东风汽车股份有限公司轻型商用车分公司B07项目车型用门铰链加强板第4工序模具自投产以来已生产70万件，远超过模具的设计寿命30万件。模具冲次多，加上原模具结
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《模具制造》2017年第8期万方数据
养频次高，费用多，且影响正常生产供件，故重新制造该副模具。为了降低模具制造成本，提高模具使用寿命，降低模具故障率，需对模具结构进行优化。
制件特征及工序内容 2
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第一作者简介：刘晓龙，男，1987年生，汉族，江西修水人，工程师。主要研究方向：模具设计与制造。
（收稿日期：2017-06-20）Gwm
.23.