Elastic pin coupling fixing method

　　The elastic pin coupling is a pin made of several non-metallic elastic materials, which is placed in the flange hole of the two halves of the coupling, and the two halves of the coupling are connected by the pin. The coupling has a simple and easy structure. It is more convenient to manufacture, assemble, disassemble and replace the elastic element, without moving the two couplings.The material of the elastic element (column pin) is generally selected from nylon, which has the ability to slightly compensate for the deviation of the two axes. The elastic part is sheared when working, and the working reliability is extremely poor. It is only suitable for the medium-speed transmission shaft system with very low requirements, not applicable For working conditions with high reliability requirements.

　　The fixing method of the elastic pin coupling is as follows:
　　1. Elastic coupling positioning screw fixation: The two positioning screws have a gap of 90° to lock the fixed shaft. In the traditional fixing method, because the front end of the screw contacts the shaft, it may cause damage to the shaft or difficulty in disassembly.
　　2. Clamping screw fixation: Utilize the tightening force of the hexagon socket bolt to shrink the slit and clamp the shaft tightly.This method is convenient to fix and disassemble, and will not cause damage to the shaft, so it is a very common fixing method.
　　3. Keyway type fixation: suitable for high-torque transmission. In order to prevent axial sliding, it is usually used together with positioning screws and clamping screws.
　　4. D-shaped hole fixing: Normally, if the motor shaft is D-shaped, if the positioning screw cannot be fixed, the coupling hole can be processed into a D-shaped hole corresponding to the size of the motor shaft, and the positioning is coordinated Screw fixed, no need to worry about slipping.
　　5. Expansion sleeve fixation: The tent is compressed and fixed by tightening the four positioning screws on the end of the coupling. It is suitable for the connection and fixation of some stepping motors and servo motors with large torque, such as expansion sleeve diaphragm couplings. , Expansion sleeve plum coupling, expansion sleeve bellows coupling, etc.