机械传动中回转零件的连接,几乎均用键联接,一般采用平键联接或花键联接。在非传动机构和传动扭矩极小的情况,也用方孔或三角形的无键联接。 这种无键联接因其强度较低,在实际应用中有一定的局限性。随着科学技术的发展,近年来国外某些传动机构上,出现了如图1所示的在圆柱轴上? Mechanical transmission in the rotating parts of the connection, almost all key connection, the general use of flat-key connection or spline connection. In the case of non-transmission and transmission torque is very small, but also with a square hole or triangle without key connection. Because of its low strength, this keyless connection has some limitations in practical application. With the development of science and technology, in recent years some foreign transmission agencies, appeared as shown in Figure 1 on the cylinder axis?