二、加工要点1.工艺孔的应用。由于C孔的位置是以其与B孔的中心线交点所确定,而这个空间的设计原点是看不到,摸不着的。在进行加工时,我们在图示位置选择了工艺孔,那么,只须找正工艺孔,然后移动坐标M值,就可以镗削C孔。同时,镗削斜面时可以以它为基准控制N值,以保 Second, the processing points 1. The application of process holes. Since the position of C hole is determined by the intersection of its center with B hole, the design origin of this space can not be seen or touched. When machining, we select the hole in the graphic position, then, just find the hole, and then move the value of the coordinate M, you can boring C hole. At the same time, when boring bevel can be used as a benchmark for controlling the N value, to protect