现需在零件上加工斜孔 ,如图 1所示。该孔的加工要求以零件的一角来定位 ,问题是当零件呈一定角度摆放时 ,怎样准确地固定该角 (作定为基准 ,译者注 ) ,然后移到待加工孔的位置。鉴于此 ,就必须在 1个直径为 1 2 .75mm的定位销上 ,磨出一深为 6 .3 5mm的直角V形槽 ,槽必须过定 Now need to be processed in the parts oblique hole, shown in Figure 1. The hole’s machining requirements are located at one corner of the part. The problem is how to fix the corner precisely when the part is placed at an angle, and then move it to the hole to be machined. In view of this, it is necessary to wear a deep-drawn V-shaped groove at a depth of 6,3 mm on a 1 2 .75 mm diameter dowel pin, the groove must be over