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链板落料冲孔复合模的设计 摘要 本次设计的题目是链板落料冲孔复合模的设计，其结构简单，对尺寸精度和外观质量有较高的要求。因此，工艺方案的确定很重要，对于装配图和零件图的绘制利用CAD来完成，对我们今后从事模具行业奠定基矗 冲压模具主要是将板料分离或成形而得到制件的加工方法。本次设计采用的是倒装复合模，本文分析了链板片的冲压工艺特点，冲压模具的设计，模具制造等理论知识及要求，结合生产实习的综合性知识，工艺特点及功能、技术要求，参考现有的冲压模具设计资料，完成了链板片冲压模具的方案设计。 关键词：链板；冲压工艺；复合模； Abstract The topic of this graduatio
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ng process. Composite mould; 目录 第一章前言..........................................................1 1.1冲压加工的意义...............................................1 1.2冲压加工的特.................................................1 1.3冲压加工的内容...............................................2 第二章冲压工艺设计...................................................3 2.1冲压件的工艺性分析.............................................3 2.1.1冲压件材料.................................................3 2.1.2冲压件形状和尺寸...........................................3 2.1.3冲压件的精度...............................................4 2.2冲压件工艺方案的确定...........................................5 第三章冲裁件排样设计.................................................7 3.1排样方式.......................................................7 3.2排样设计.......................................................8 3.2.1搭边的确定.................................................8 3.2.2进距的确定.................................................9 3.2.3条料宽度的确定.............................................9 3.3材料的利用率.................................................11 第四章冲压力计算...................................................13 4.1冲裁力的计算.................................................13 4.2降低冲裁力的措施.............................................13 4.3卸料力、推件力和顶件力的计算.................................14 4.3.1卸料力的计算.............................................15 4.3.2推件力的计算.............................................15 4.3.3顶件力的计算.............................................15 第五章冲压设备及选用................................................17 5.1冲压设备的种类................................................17 5.2冲压设备的选用................................................17 5.2.1冲压设备选用的原则........................................17 5.2.2冲压设备类型的选择........................................18 5.2.3计算冲压工艺总力..........................................18 5.2.4校核初选设备............................................19 第六章凸凹模刃口尺寸的确定........................................21 6.1尺寸计算原则................................................21 6.2凸、凹模刃口尺寸计算........................................21 第七章模具主要零部件设计.........................................25 7.1凹模设计...................................................25 7.1.1凹模刃口形式..........................................25 7.1.2凹模结构形式及其固定方法..............................25 7.1.3凹模外形设计..........................................26 7.2凸模设计..................................................27 7.2.1凸模的结构形式与固定..................................27 7.2.2凸模尺寸的确定........................................28 7.2.3凸模的强度校核........................................30 7.3凸凹模设计................................................31 7.3.1凸凹模外形尺寸的确定..................................31 7.3.2凸凹模壁厚的确定......................................31 7.3.3凸凹模材料的选取......................................32 7.4定位零件的设计............................................32 7.4.1导料零件的设计........................................32 7.4.2挡料零件的设计........................................33 7.5卸料装置的设计............................................33 7.6连接件与固定零件的设计....................................35 7.6.1凸模固定板的设计.....................................35 7.6.2垫板的设计...........................................36 7.6.3螺钉与销钉的设计.....................................36 7.6.4模架的选用...........................................37 7.6.5模柄的选用...........................................38 7.6.6推件块装置的设计.....................................38 第八章模具装配图及零件图的绘制.................................41 8.1装配图绘制...............................................41 8.1.1装配图绘制原则......................................41 8.1.2装配图绘制要求.........................................41 8.2零件图的绘制...............................................42 8.2.1零件图的绘制步骤......................................43 8.2.2零件图尺寸标注方法....................................43 结论.............................................................45 致谢.............................................................47 参考文献.........................................................49