目 录
1 分析零件并确定其生产类型 .................................................................................................1
1.1 零件的作用：............................................................................................1
1.2 零件的生产类型：....................................................................................1
2 选择毛坯尺寸，设计毛坯图 .................................................................................................2
2.1 选择毛坯....................................................................................................2
2.2 确定机械加工余量、毛坯尺寸和公差....................................................2
2.4 确定毛坯尺寸............................................................................................2
2.5 确定毛坯尺寸公差....................................................................................3
2.6 绘制毛坯图................................................................................................3
3 选择加工方法.............................................................................................................4
3.1 定位基准的选择........................................................................................4
3.2 平面的加工................................................................................................4
3.3 孔的加工....................................................................................................4
3.4 螺纹加工....................................................................................................4
4 制定工艺路线.............................................................................................................5
5 工序设计.....................................................................................................................7
5.1 选择加工设备............................................................................................7
5.2 选择夹具....................................................................................................7
5.3 选择刀具....................................................................................................7
5.4 选择量具....................................................................................................7
6 确定切削用量和基本时间......................................................................................................9
6.1 工序 30 （粗镗φ67.8mm 孔） 切削用量及基本时间的确定..............9
6.2 工序 35 （半精镗φ71.3mm 孔） 切削用量及基本时间的确定..........9
6.3 工序 40 （精镗φ72mm 孔） 切削用量及基本时间的确定................10
6.4 工序 45 （粗镗φ57.8mm 孔） 切削用量及基本时间的确定............11
6.5 工序 50 （半精镗φ61.3mm 孔）切削用量及基本时间的确定..........12
6.6 工序 55 （精镗φ62mm 孔） 切削用量及基本时间的确定................13
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