在单件生产或机床修理工作中,常常用加工直齿圆柱齿轮的标准盘形齿轮铣刀来加工斜齿轮,这样加工出的齿形是近似的。此时,所用铣刀的模数及齿形角分别等于斜齿圆柱齿轮的法向模数及法向齿形角,而铣刀号根据斜齿轮在法向端面中的当量齿数Zv来选择。 Zv= Z/cos3βf(1)式中Z——斜 In single-piece production or machine tool repairs, helical gears are often machined with a standard disc cutter that processes spur gears such that the profile of the machined tooth is approximated. In this case, the modulus and gear angle of the milling cutter used are equal to the normal modulus and the normal gear angle of the bevel gear, respectively, and the milling cutter number is selected according to the equivalent gear number Zv of the bevel gear in the normal end face. Zv = Z / cos3βf (1) where Z - oblique