大家知道,一般滚齿用的滚刀,在滚切时的整个切削负荷,大都集中在两三个刀齿上,而其他的刀齿,却很少、甚至几乎没有参加切削。因此,当我们稍稍加大切削用量,这少部分刀齿的负荷就很重,很容易磨损。这就是一般滚刀生产率不高的缘故。但是,苏联先进经验却告诉我们,只要把滚刀刀齿的齿顶形状适当地加以改变,就可以增加它同时切削的刃口的数目,使 As we all know, the general hobbing hob, the whole cutting load in the hobbing, mostly concentrated in the two or three teeth, and other teeth, but little or even almost no participation in cutting. Therefore, when we slightly increase the amount of cutting, this small part of the blade load is very heavy, it is easy to wear. This is the reason that the general hob productivity is not high. However, the advanced experience of the Soviet Union tells us that as long as the shape of the tooth tip of the hob tooth is properly changed, the number of edges it cuts simultaneously can be increased.