我厂产品中,需在內孔中车出径向槽沟的工件很多(图1),槽径规格不一,要求的公差也较严,有的槽沟在內孔的深处,用普通卡尺和卡钳都无法测量,给加工带来了困难。以往工人都是凭经验利用机床刀架刻度盘来控制加工尺寸,这样经常出现废品,成为生产关键。在生产 I plant products, the need for a car in the hole radial groove a lot of workpieces (Figure 1), the different sizes of the groove, the required tolerance is also more stringent, and some grooves in the depths of the hole, with ordinary Caliper and caliper can not be measured, to the processing of the difficulties. In the past, workers used the scale of the machine tool turret to control the machining size based on experience, so that the scrap often appeared and became the key to production. In production