机械制造业中,在斜面上加工小孔的工件是不少的,如图1、2、3、所示的就是常见的几个例子。图示的工件其孔径为φ1.2～φ2,孔径公差为0.04～0.16,位置公差亦只有0.2,材料为耐热不锈钢。在斜面上钻孔与平面上不一样。由于被加工面是一个斜面,故钻头在刚接触到工件时呈单刃切削状态,工件给钻头的切削刃一个径向推力。在这个力的作用下,钻头就会在加工表面上产生滑移,使孔的形 Machinery manufacturing industry, the processing of small holes in the bevel of the workpiece is quite a lot, as shown in Figure 1,2,3, is a few common examples. The figure shows the workpiece diameter of φ1.2 ~ φ2, aperture tolerance of 0.04 to 0.16, the position tolerance is only 0.2, the material is heat-resistant stainless steel. Drilling holes on bevels is not the same as on a flat surface. Because the machined surface is a bevel, the bit is single-edged when it comes into contact with the workpiece. The workpiece gives the bit a radial thrust. Under this force, the drill bit will slip on the machined surface, making the hole shape