CA6140车床对开螺母加工说明书

目录

目录................................................................................................................................... 1 1 零件的分析................................................................................................................... 2

1.1 毛坯生产类型................................................................................................... 2

1.2 毛坯铸造形式................................................................................................... 2 1.3 毛坯精度尺寸................................................................................................... 2 1.4 确定毛坯铸件的重量....................................................................................... 3 1.5 确定机械加工余量........................................................................................... 3 1.6 确定铸铁件的尺寸偏差................................................................................... 3 1.7 零件的作用....................................................................................................... 3 2 工艺规程设计............................................................................................................... 4

2.1 性能要求............................................................................................................. 4

2.2 确定毛坯的制造形式......................................................................................... 4 2.3 基面的选择......................................................................................................... 5 2.4 制定工艺路线..................................................................................................... 5 2.5 机械加工余量、工序尺寸及毛坯尺寸的确定................................................. 6 2.6 确定切削用量及基本工时................................................................................. 7

2.6.1 粗铣燕尾..................................................................................................7

2.6.2 精铣燕尾..................................................................................................8 2.6.3 铣退刀槽..................................................................................................8 2.6.4 粗铣端面..................................................................................................8 2.6.5 精铣端面..................................................................................................9 2.6.6 钻Φ52H7孔并倒角1.5×45º ..................................................................9 2.6.7 钻2 × Φ12孔 ........................................................................................ 10 2.6.8 车端面.................................................................................................... 11 2.6.9 切断........................................................................................................ 13

3 机床夹具设计............................................................................................................. 13

3.1 工序尺寸精度分析........................................................................................... 13 3.2 定位方案确定................................................................................................... 14 3.3 定位元件的确定............................................................................................... 14 3.4 定位误差分析计算........................................................................................... 14 3.5 夹紧方案及元件的确定................................................................................... 14 4 体会总结..................................................................................................................... 16 参考文献......................................................................................................................... 16