直到现在,所谓的硬质合金滚齿加工通常都不外乎是刮削滚齿——严格说来是一种精加工。采用硬质合金滚刀滚切整体钢坯轮齿的努力并未收到成效。昂贵的硬质合金滚刀在几转以后,切削刃就因接连不断的撞击和振动而崩刃。这样,对于滚切钢的齿轮毛坯来说,高速钢滚刀——尽管切速相对较低、两次重磨间的滚刀寿命较短——现仍然是受欢迎的刀具。 Until now, so-called carbide hobbing has generally been nothing more than shaving hobbing - strictly speaking, a finish. Efforts to cut the whole steel gear teeth with carbide hobs have not been successful. After a few revolutions of the expensive carbide hob, the cutting edge collapses due to a series of impacts and vibrations. In this way, high-speed steel hobs - for hobbing of hobbed steel - are still popular tools, albeit with a relatively low speed, and a short life of hobs between regrind.