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大型铣床主轴上,有一个坚固刀杆用的锥孔。使用久了之后,这个锥孔会扩大,常常使刀杆折断。因而主轴的锥孔需要修理。苏联伏罗希洛夫格勒的“十月革命”内燃机车制造厂,根据Б·Г·波采欣的建议,用如下修理方法:把主轴孔镗到锥度1:200。在主轴前部把孔加工放圆柱形,并在孔中切螺纹(M155×5)。在锥孔中插入衬套2,衬套用螺帽1固定。衬套由45号钢制成,淬火到硬度R_a=50～52。衬套内、外表面加以磨削。在螺帽中铣一口,
Large milling machine spindle, there is a solid taper hole Arbor. After use for a long time, this tapered hole will expand, often make the arbor broken. Thus the spindle taper hole needs repair. The “October Revolution” diesel locomotive factory in Voroshilovgrad, the Soviet Union, is based on the suggestion of Б · Г · Bocese Xin, using the following repair method: Boring the spindle bore to taper 1: 200. Place the hole on the front of the spindle cylindrical and cut the thread in the hole (M155 × 5). Insert the bushing 2 in the tapered bore and secure the bushing with the nut 1. Bushing made of 45 steel, hardened to hardness R_a = 50 ~ 52. Bushing, the outer surface to be ground. Milling a nut in the nut,