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要更换装在机架上的旧轴承,用一般的方法从盲孔中取出它较为困难,而采用这种弹性芯轴(如右图)可使更换工作非常简便。选一根比所要取出轴承内径略大的冷轧圆钢,把一端车成与轴承内径滑配(比轴承内径略小0.001～0.002英寸),并在这端加工成60°内锥孔,然后在这端锯一英吋长的槽,使之具有一定的弹性。最后用一只六角或内六角螺钉,将其头部车成60°的外倒锥,螺钉的长度应超过芯轴。另一方面,选择的圆钢要与螺钉长度相适应,有时就得制作专门的螺钉配芯轴。使用时将螺钉放进芯轴,在一端拧上螺母,
To replace old bearings on a rack, it is difficult to remove the blind holes from the blind hole in the usual way, and the use of such a flexible mandrel (pictured to the right) makes replacement very easy. Select a slightly larger than the diameter of the bearing to be taken out of the cold-rolled round bar, the one end of the car into the bearing with the inner diameter slip (bearing diameter than the 0.001 to 0.002 inches), and in this end into a 60 ° taper, and In this end saw a one-inch long groove, so that it has a certain flexibility. Finally with a hexagonal or hexagonal screw, the head car into a 60 ° outside the inverted cone, the length of the screw should be more than the mandrel. On the other hand, the choice of round steel to adapt to the length of the screw, and sometimes have to make a special screw with mandrel. Use the screw into the mandrel, screw nut on one end,