“變速器換擋叉”零件的機械加工 工藝規(guī)程
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- 機械制造課程設計說明書《變速器換擋叉》目錄
一、零件分析··················································3
1.1零件的作用············································3
1.2零件的工藝分析········································3
1.3尺寸和粗糙度的要求····································3
1.4位置公差要求···········································4
二、毛坯的設計··············································4
2.1選擇毛坯··············································4
2.2確定機加工余量、毛坯尺寸和公差··························4
2.3 確定機械加工加工余量·································4
2.4 確定毛坯·············································5
2.5 確定毛坯尺寸公差·····································4
2.6設計毛坯圖············································4
三、選擇加工方法，擬定工藝路線································6
3.1基面的選擇············································6
3.2粗基準的選擇··········································6
3.3精基準的選擇··········································6
3.4制定機械加工工藝路線··································6
四、加工設備及道具、夾具、量具的選擇···························14
五、確定切削用量·············································16
六、基本時間的確定··········································18
七、夾具設計···············································23
八、總結(jié)·····················································23
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