我厂有些难加工材料的通孔通常采用带刃倾角的铰刀进行精加工。采用这种铰刀比采用一般无刃倾角的铰刀加工孔时,在相同的条件下粗糙度可降低一级,切削也较轻松些。这种铰刀制造较方便,即先磨出后刀面,再沿外圆划出切削锥界线,就可磨出刃倾角。至于刀具锥角,则是自然形成的,不必单独加工。切削锥角φ与后角α和刃倾角λ的关系(见下图)不难导出。由于φ角是派生的,在图纸上不需注出。为了避免或减少砂轮磨损对所刃磨角精度的影 Some of our factory through-hole material is difficult to process materials commonly used reamer edge reamer finishing. The use of such a reamer than the general edge reamer angle machining holes, under the same conditions, the roughness can be reduced by a level, cutting easier. This reamer manufacturing more convenient, that is, first grinding flank, and then cut along the outer circle of cutting cone, you can mill out the blade angle. As for the tool cone angle, it is naturally formed, do not have to separate processing. The relationship between the cutting taper angle φ and the relief angle α and the inclination angle λ (see the following figure) is not difficult to derive. As φ angle is derived, no need to note on the drawings. In order to avoid or reduce the impact of grinding wheel grinding angle accuracy