Taper sleeves are mainly divided into TB taper sleeves, QD taper sleeves and STB taper sleeves. The holes where the taper sleeves match the pulleys are half-sided, and the two light holes on the taper sleeves and the two threaded holes on the pulleys are respectively A complete hole is formed, and a threaded hole on the cone sleeve and a light hole on the pulley form a complete hole. During assembly, the two screws are placed in the two threaded holes of the pulley. As the screws are continuously tightened in the threaded holes in the pulley, the screw action pushes the screws to the small end of the tapered hole on the pulley, and the tapered sleeve The two light holes are not completely processed. In this way, when the head of the screw is against the bottom of the light hole, the force is transmitted to the taper sleeve, and the taper sleeve moves relative to the small end of the tapered hole of the pulley. At this time, due to the taper, the tapered sleeve keeps tightening the shaft, and the shaft reacts to the tapered sleeve and then to the pulley. In this way, the pulley, the cone sleeve and the shaft are tightly assembled.
On the other hand, when disassembling, the screw withdrawn from the threaded hole of the pulley uses a threaded hole on the tapered sleeve. During the process of constant tightening, the screw also moves toward the small end of the tapered hole of the pulley. When the screw head abuts When the bottom of the light hole of the pulley is transmitted, the force is transmitted to the pulley. At this time, the pulley moves relative to the tapered sleeve toward the small end of the tapered hole of the pulley. In this way, the space between the pulley and the tapered sleeve is disengaged, and the tapered sleeve loses its origin from the pulley cone. The binding force of the hole, plus a little elasticity to restore its roundness, is also separated from the shaft.
When the tapered sleeve connects the pulley and the shaft together, an interference fit connection body is formed. The inner bore of the taper sleeve is keyed to the shaft and transmits torque and force through the key. Although there is no key connection between the taper sleeve and the pulley, there is positive pressure on the joint surface, and the generated friction can transmit torque and force.