车削双孔臂杆φ72_(+0)+~0.2斜轴外圆及端面(图1),我们设计了车削夹具(图2)。在长方形基础板(300×120×60毫米)9上,φ60毫米圆形定位盘1用十字键定位组装,φ60菱形定位盘3根据工件孔距并沿T形槽调整尺寸。在φ360圆形基础板5上用四组定位接头和角铁形镗孔支承(26×45× Turning double hole arm φ72 _ (+0) + ~ 0.2 Oblong axis cylindrical and end face (Figure 1), we designed the turning fixture (Figure 2). On a rectangular base plate (300 × 120 × 60 mm) 9, φ60 mm circular positioning plate 1 with cross key positioning assembly, φ60 rhombus positioning plate 3 according to the workpiece pitch and along the T-slot to adjust the size. In φ 360 circular base plate 5 with four sets of positioning joints and angle iron boring support (26 × 45 ×