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我厂扭制锥柄麻花钻外圆加工采用无心磨削工艺。此工艺比常用工艺方法少六道工序,相应地节约人员,降低成本,提高效率。可以利用扁尾端柄部直径小的特点补偿很大一部分轧制工序或热处理造成的弯曲,因未经凋直,所以没有调直造成的内应力,M11100/1成型磨削时,柄刃同时加工可以保证径向跳动达到国内先进水平。但自1979年贯彻麻花钻头国家标准以
My factory twist taper shank twist drill cylindrical grinding centerless grinding process. This process is less than the six commonly used process technology processes, the corresponding savings in personnel, reduce costs and improve efficiency. Can use the characteristics of small tail tip diameter to compensate for a large part of the rolling process or heat treatment caused by bending, because not withered, so there is no internal stress caused by straightening, M11100 / 1 forming grinding, handle blade at the same time Processing can ensure that the radial runout to the domestic advanced level. However, since the implementation of twist drill national standards in 1979