这种加工方法是在工件的两个相对表面上分别铣槽,槽深均略大于工件厚度之半。这两个槽可以相互垂直分布(图a、d)或成任意角度分布(图b、c)。显然只要改变槽宽和两槽相互分布角度,即可得到任何四边形。若槽宽相等,并且两槽成垂直分布,就可得到正方形孔。 This method of processing is to mill the grooves on the two opposite surfaces of the workpiece with the slot depth slightly greater than half the thickness of the workpiece. The two grooves can be perpendicular to each other (Fig. A, d) or at any angle (Fig. B, c). Obviously just change the groove width and the distribution of the two slots angle, you can get any quadrilateral. If the groove width is equal, and the two grooves into a vertical distribution, you can get a square hole.