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一、被加工零件(图1)1号泵柱塞套,材料为GCr15,硬度HB179～207。技术条件1.进回油孔中心线E对中孔M轴线的偏移(不相交)允差0.08毫米,不垂直度允差0.2:50;2.定位槽S对中孔M轴线的不对称度允差为0.12毫米。二、工序安排(图2)Ⅰ工位:装料;Ⅱ工位:左右钻φ3~(+0.06)孔,光洁度(?)4;Ⅲ工位:左粗铣4~(+0.08)月牙槽,右探测φ3钻头折断情况;Ⅳ工位:左精铣4~(+0.08)月牙槽,右倒60°鱼眼坑;Ⅴ工位:后面铰中孔,左右铰φ3小孔(先铰中孔,后铰小孔,使小孔的毛刺向大孔翻;Ⅵ工位:清洗;Ⅶ工位:卸料;Ⅷ工
First, the processed parts (Figure 1) No. 1 pump plunger sleeve, material GCr15, hardness HB179 ~ 207. Technical conditions 1. Return to the oil hole centerline E on the center hole M axis offset (disjoint) tolerance of 0.08 mm, non-perpendicularity tolerance of 0.2: 50; 2. S slot alignment slot M axis asymmetry The tolerance is 0.12 mm. Second, the process arrangement (Figure 2) Ⅰ station: loading; Ⅱ station: drilling around φ3 ~ (+0.06) hole, finish (?) 4; Ⅲ station: left roughing 4 ~ (+0.08) , The right to detect φ3 bit breakage; Ⅳ station: the left finishing 4 ~ (+0.08) Crescent groove, the right down 60 ° fisheye pit; Ⅴ station: back hinge hole, left and right hinge φ3 hole Hole, after the hinge hole, so that the hole to the big hole turn the burr; VI station: cleaning; Ⅶ station: discharge; Ⅷ workers