SPINDLE TIP EXTENSION FOR SPINNING WITH A REDUCED BALLOON

摘要

The spindle tip extension is sized so that the length of the shaft between the spindle tip and the transition of the crown cone to the shaft is one-half times to three times longer than the shaft diameter and the crown length between the point of maximum crown diameter and the transition of the crown cone to the shaft is 11/2 to 4 times more than the length of the shaft, while the crown cone forms an angle of 8 DEG to 13 DEG with the axis of rotation of the spindle.