60度弯板冲压件课程

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1、课程设计课程名称冲压工艺及模具设计题目名称60度弯板冲压模具设计专业班级材控04班学号33310409学生姓名朱靖指导教师聂信天夏荣霞史立新徐秀英17目录一工艺性分析····································31.1零件图及零件工艺性分析··································31.1.1零件成形工序图···································31.1.2方案选择························

2、···················51.2弯曲件的结构工艺性······································61.2.1展开尺寸计算······································61.2.2自由弯曲力········································61.2.3校正弯曲力·····································71.2.4弯曲模的圆角半径·················

3、··················71.2.5弯曲件回弹值的计算·································71.2.6计算凸模中心角·································7二弯曲模工作部分的尺寸计算····································82.1凸凹模的间隙············································82.2弯曲模工作部分的尺寸计算··················

4、··············92.3凸凹模圆角半径········································112.4凹模深度的选取·········································112.5凹模高度及壁厚·········································11三冲压设备的选取·············································1217四模具的结构件设计···········

5、······················134.1模架···················································134.2操作方式选择···········································134.3材料送进和定位方式选择·······························134.4卸料装置的选择·········································144.5导向装置的选择····

6、····································144.6模柄的选择·············································15五设计小结····················································16参考文献······················································16一工艺性分析1.1零件图及零件工艺性分析1.1.1零件图(1)零件如图：60

7、度弯板，材料：10钢。板厚1mm。工件精度：IT1117(2)零件成形工艺图17第一步：第二步：1.1.2方案选择(1)方案种类：该工件包括落料、冲孔、弯曲三个基本工序，可有以下三种方案。方案一：先冲孔，再落料，最后弯曲。采用单工序模生产。方案二：采用落料-冲孔复合模和弯曲模进行生产。17方案三：冲孔-落料-弯曲级进模。(2)方案比较如下各方案的特点及比较如下：方案一：模具结构简单，制造方便，但需三道工序，三副模具，成本相对较高，生产效率低，工件精度，质量难以达到生产要求。故不选此方案。方案二：

8、只需两套模具，工件精度和生产效率基本能满足要求，模具轮廓尺寸较小，模具制造成本不高。方案三：级进模是一种多工位，效率高的加工方法。但级进模轮廓尺寸大，制造复杂，成本高。因而也排除此方案。(3)方案的确定综上所述，本次设计采用落料-冲孔复合模和弯曲模两套模具进行生产1.2弯曲件的结构工艺性弯曲力是设计冲压工艺过程和选择设备的重要依据之一。由于弯曲力受到材料性能、制件形状、弯曲方法、模具结构等多种因素的影响，因此很难用理论分析方法进行准确的计算，一般来讲校正弯曲力比自由弯曲力大。生产实际中常用下列经