莫斯科工具厂设计制造了一种齿顶前角γ_B=-30°的硬质合金滚刀,该滚刀用于加工热处理过的轮齿表面,被加工齿轮的齿面硬度可达HRC60。根据产品精度要求,用这样的滚刀加工出来的齿轮,有的无需唐齿,有的不必粗磨,既免去了价格昂贵的齿轮磨床,又不需高技术水平的磨工,同时还可以将工效提高到2～5倍。 The Moscow Tool Works designed and manufactured a cemented carbide hob with a rake angle γ_B = -30 °. This hob is used to machine heat-treated tooth surfaces with a flank hardness of up to HRC60. According to the requirements of product accuracy, gears machined with such hobs need not be beaten, others need not be coarsely ground, eliminating the need for costly gear grinding machines and eliminating the need for high-skilled millers, as well as Ergonomics will be increased to 2 to 5 times.