机床夹具和其它一些机器零件的加工过程中,经常遇到一些有位置精度要求的斜孔。这些斜孔不仅本身有尺寸精度要求,而且斜孔与斜孔,斜孔与直孔或某个平面也有距离精度要求。如图1所示,这一类孔,由于斜孔的位置精度要求都很高,所以必须在精密坐标镗床上加工。 Machine tool fixtures and other parts of the machining process, often encountered some of the requirements of the location of the hole accuracy. These oblique holes not only have their own dimensional accuracy requirements, but also slant holes and slant holes, slant holes and straight holes or a certain plane also has the accuracy requirements. As shown in Figure 1, this type of hole, as the oblique hole position accuracy requirements are high, it must be processed in precision coordinate boring machine.