88052非标锥柄中心钻 为加工直径6～24mm的大中心孔,青海工具厂设计了两种系列,16种规格的非标锥柄中心钻。这两种系列,一种带有120°护锥,一种不带护锥。中心钻切削刃部形式类同于标准中心钻,锥柄号根据基本直径有3#、4#、5#三种。同时他们还生产了模数2～8 mm的A级精度双圆弧 88052 non-standard taper shank center drill for the processing of large diameter center hole 6 ~ 24mm, Qinghai Tools Factory designed two series, 16 kinds of specifications of non-standard taper shank center drill. These two series, one with 120 ° guard cone, one without guard cone. Center drill cutting edge form similar to the standard center drill, taper shank according to the basic diameter of 3 #, 4 #, 5 # three. At the same time, they also produce Class A precision double circular arc with modulo 2 ~ 8 mm