我厂是重型机床生产厂,在各种齿轮箱内均有模数和直径较大而硬度和精度中等的齿轮(如模数4～8、直径250～400mm、硬度 HRC 42左右、精度 7～8级),像这样的齿轮采用磨省工艺即不经济,也没有必要,采用珩齿工艺也很困难。为此我们采用普通高速钢滚刀来进行精液(文中简称中硬滚)。 I plant is a heavy machine tool plant, in a variety of gearboxes have a larger modulus and diameter and hardness and accuracy of medium-sized gear (such as modulus 4 to 8, diameter 250 ~ 400mm, hardness HRC 42 or so, the accuracy of 7 ~ 8), such as the use of mill gear grinding process that is uneconomical, it is not necessary, the use of honing process is also very difficult. To this end, we use ordinary high-speed steel hob to carry out semen (referred to as medium hard roll).