The fixed form of the coupling!

The five types of couplings are: elastic coupling positioning screw, clamping screw, keyway type, word hole and expansion sleeve.

1. Coupling positioning screw fixation: two positioning screw gaps lock the fixed shaft. In the traditional fixing form, because the front end of the screw is in contact with the shaft center, it may cause damage to the shaft center or difficult disassembly.

2. Clamping screw fixing: use the force of tightening the hexagon socket head cap screw to shrink the slit and tightly clamp the axis. This form is easy to fix and disassemble, and will not cause damage to the shaft. It is a very commonly used form of fixing.

3. Keyway type fixing: suitable for high torque transmission, in order to avoid axial sliding, it is generally used together with positioning screw fixing and clamping screw fixing.

4. Fixing the word hole: Under normal working conditions, if the shaft of the motor is in the shape of a letter, if the positioning screw cannot be fixed, the hole of the coupling can be processed into a hole corresponding to the volume of the motor shaft, which is suitable for positioning Screws are fixed, so you don't have to worry about slipping out.

5. Expansion sleeve fixation: After tightening the four positioning screws on the end face of the coupling, the account cover is pressed and fixed, which is suitable for the connection and fixation of stepping motors and servo motors with large torsion force, such as expansion sleeve diaphragm coupling Devices, expansion sleeve plum blossom couplings, expansion sleeve pattern tube couplings, etc.

When choosing a coupling, the designer should first choose among the couplings that have been formulated as national standards, machinery industry standards and national patents. When the existing standard couplings and patented couplings cannot meet the design requirements Designers are required to design couplings to meet design requirements. At present, my country has standardized quite a few different types of couplings to meet the design requirements of different torques, speeds and working conditions.