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说明书1份,共22页,约9400字左右
目录.....................................................................................................................................2
第一章 序言...................................................................................................................4
1.1选题的意义....................................................................................................................5
1.2夹具的发展方向............................................................................................................6
1.3本章小结........................................................................................................................6
第二章 壳体的加工工艺规程设计.........................................................................6
2.1壳体的工艺....................................................................................................................6
2.1.1壳体的作用................................................................................................................6
2.1.2壳体的技术要求.........................................................................................................8
2.1.3壳体的工艺分析.........................................................................................................8
2.3确定毛坯,绘制毛坯简图.............................................................................................9
2.3.1选择毛坯.....................................................................................................................9
2.3.2绘制壳体毛坯的铸造简图.......................................................................................10
2.4拟定壳体工艺路线.......................................................................................................10
2.4.1定位基准的选择.......................................................................................................10
2.4.2精基准的选择...........................................................................................................11
2.4.3粗基准的选择...........................................................................................................11
2.5各面、孔加工方法的确定............................................................................................11
2.6加工阶段的划分...........................................................................................................11
2.7工序的集中于分散.......................................................................................................12
2.8工序顺序的安排...........................................................................................................12
2.8.1机械加工工序...........................................................................................................12
2.8.2热处理工序...............................................................................................................12
2.8.3辅助工序...................................................................................................................13
第三章 机床设备及工艺装备的选用..................................................................13
3.1机床设备的选用..........................................................................................................13
3.2工艺装备的选用..........................................................................................................14
第四章 加工余量、工序尺寸和公差的选用.....................................................14
第五章 切削用量与时间定额的计算..................................................................14
5.1切削用量的计算..........................................................................................................15
5.1.1钻孔工步...................................................................................................................15
5.1.2粗绞工步...................................................................................................................16
5.1.3精绞工步...................................................................................................................16
5.2时间定额的计算...........................................................................................................16
5.2.1基本时间Tj的计算.................................................................................................16
5.2.2辅助时间Tf的计算.................................................................................................17
5.2.3其他时间的计算.......................................................................................................17
5.2.4单件时间Tdj的计算...............................................................................................17
第六章 夹具设计........................................................................................................17
6.1问题的提出...................................................................................................................18
6.2定位方案.......................................................................................................................18
6.3夹紧机构.......................................................................................................................18
6.4夹具与机床的联接元件...............................................................................................19
6.5定位误差分析...............................................................................................................19
6.6切削力及夹紧力的计算...............................................................................................19
第七章 结论.................................................................................................................20
致谢....................................................................................................................................21
参考文献..........................................................................................................................22
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