组合机床概述机械毕业设计说明书

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机械毕业设计说明书目 录
摘 要 ·········································1
Abstract ········································2
第1章 绪论 ······································3
1.1 引言········································3
1.2 毕业设计目的 ····································3
1.3 组合机床概述 ····································4
第2章 组合机床总体设计 ································5
2.1 工艺方案的拟定···································5
2.1.1 被加工零件的特点·································5
2.1.2 分析、研究被加工零件·······························5
2.1.3 组合机床总体方案论证·······························6
2.1.4 定位基准及夹压点选择·······························7
2.2 确定切削用量及刀具选择·······························7
2.2.1 刀具的选择····································7
2.2.2 切削用量的选择··································7
2.2.3 计算切削力 切削扭矩 切削功率 及刀具耐用度·····················9
2.2.4 确定主轴尺寸 外伸尺寸 ······························12
2.2.5 选择接杆·····································12
2.2.6 动力部件工作行程及循环的确定····························13
2.3 通用部件的选择····································14
2.3.1 选用滑台形式···································14
2.3.2 选液压滑台的型号·································15
2.3.3 选动力箱型号···································15
2.3.4 机床装料高度的确定································16
2.3.5 中间底座尺寸的确定································16
2.4 生产率计算卡·····································17
3 组合机床夹具设计····································20
3.1 夹具设计的基本要求和步骤······························20
3.1.1 夹具设计的基本要求································20
3.1.2 夹具设计的步骤···································20
3.2 定位方案的确定····································21
3.2.1 零件的工艺性分析·································21
3.2.2 定位方案的论证··································21
3.2.3 导向装置·····································21
3.3 夹紧方案的确定···································23
3.3.1 夹紧装置的确定··································23
3.3.2 夹紧方案论证···································23
3.3.3 夹紧力确定····································23
3.4 误差分析······································25
3.5 绘制夹具装配图及零件图·······························28
4 结论··········································29
参考文献·········································30
致谢 ··········································31
附录 ··········································34