用圆形或平面拉刀以及有齿升的推刀加工时,已加工表面的粗糙度和切屑形成条件与分屑槽的宽度S_k,各分屑槽的轴线之间的距离b有关。若用圆形分屑槽沿切屑宽度分屑,那末,已加工表面的粗糙度和切屑形成条件还与切削刃长度L 有关。在工学院的研究(考虑了已知推荐数据)表明,实际上,距离b 与拉刀直径d When machining with a round or flat broach and a toothed lifting knife, the roughness of the machined surface and the chip forming conditions are related to the width Sk of the chip flute and the distance b between the axes of the flutes. If circular chip flutes are divided along the chip width, the roughness of the machined surface and chip formation conditions are also related to the length L of the cutting edge. Research at the Institute of Technology (taking into account the known recommended data) shows that in practice the distance b to the broach diameter d