To avoid sliding that occurs in cylindrical roller thrust bearings, the taper Angle of the rollers is selected so the extended contact lines intersect on the bearing axis.
为了避免推力圆柱滚子轴承发生滑动，滚子的锥度要合适以至于扩大的接触线可以与轴承轴相交。
2
In the forming technique of cylindrical spiral curved surfaces, the contour of workpiece is virtually the result that disk shaped milling tools feed into the workpiece and move around its axis.
The numerical result and the critical value's effect imposed by circumferential initial stress numerical character on cylindrical thin shell beard the press at axis.