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车床变速箱中拔叉及专用夹具设计

更新日期:2010-12-12 | 来源:可好网 | 热门量:352
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设计描述:
目 录

摘 要...`````````````````````````````````````````````````` Ⅰ
Abstract ``````````````````````````````````````````````````Ⅱ

1 绪论... `````````````````````````````````````````````````1
1.1课题背景...```````````````````````````````````````````` 1
1.2夹具的发展史...```````````````````````````````````````` 1
1.3小结.... ```````````````````````````````````````````````2
2 拨叉80-08的加工工艺规程设计..``````````````````````````. 3
2.1零件的分析...`````````````````````````````````````````` 3
2.1.1零件的作用... ````````````````````````````````````````3
2.1.2零件的工艺分析... ````````````````````````````````````3
2.2确定生产类型... ````````````````````````````````````````3
2.3确定毛坯... ````````````````````````````````````````````3
2.3.1确定毛坯种类...`````````````````````````````````````` 3
2.3.2确定铸件加工余量及形状... ````````````````````````````3
2.3.3绘制铸件零件图... ````````````````````````````````````4
2.4工艺规程设计... ````````````````````````````````````````4
2.4.1选择定位基准... ``````````````````````````````````````4
2.4.2制定工艺路线...`````````````````````````````````````` 4
2.4.3选择加工设备和工艺设备...```````````````````````````` 6
2.4.4机械加工余量、工序尺寸及公差的确定...```````````````` 6
2.5确定切削用量及基本工时...`````````````````````````````` 8
2.5.1工序1:粗铣Φ25H7的两侧面... `````````````````````````8
2.5.2工序2:粗铣平下端面孔侧面的工艺凸台... ```````````````9
2.5.3工序3:钻Φ25H7的通孔... `````````````````````````````9
2.5.4工序4:扩Φ25H7的通孔...````````````````````````````` 11
2.5.5工序5:铰Φ25H7的通孔... `````````````````````````````12
2.5.6工序6:粗铣a、b面... `````````````````````````````````12
2.5.7工序7:粗铣Φ60H12孔的两面... ````````````````````````14
2.5.8工序8:精铣Φ60H12孔的两面... ````````````````````````14
2.5.9工序9:粗镗下端Φ60H12的孔... ````````````````````````15
2.5.10工序10:半精镗下端孔到Φ60H12. ``````````````````````16
2.5.11工序11:粗铣16H11的槽... ````````````````````````````16
2.5.12工序12:半精铣16H11的槽... ``````````````````````````17
2.5.13工序13:钻Φ20.50的孔... ````````````````````````````18
2.5.14工序14:攻M22×1.5的螺纹... `````````````````````````19
2.5.15工序15:铣开Φ60H12的孔... ``````````````````````````20
2.6本章小结...```````````````````````````````````````````` 21
3 专用夹具设计... `````````````````````````````````````````22
3.1镗孔夹具设计... ````````````````````````````````````````22
3.1.1问题的提出... ````````````````````````````````````````22
3.1.2夹具的设计... ````````````````````````````````````````22
3.2铣槽夹具设计... ````````````````````````````````````````25
3.2.1问题的提出... ````````````````````````````````````````25
3.2.2夹具的设计... ````````````````````````````````````````25
3.3钻孔夹具设计... ````````````````````````````````````````29
3.3.1问题的提出...```````````````````````````````````````` 29
3.3.2夹具的设计... ````````````````````````````````````````30
3.4本章小结... ````````````````````````````````````````````35
结论 ``````````````````````````````````````````````````````36
参考文献... ```````````````````````````````````````````````37
致 谢.... `````````````````````````````````````````````````38

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