The elastic coupling is the protector of the motor

      You may have to ask, why is the coupling as an accessory used on the motor, because it has the function of protecting the service life of the motor.The elastic coupling used on the motor is divided into: nylon gear sleeve, diaphragm, star-shaped, plum blossom without backlash, and so on.

    one,Plum couplingIt is widely used in spindle servo motors. For example, the spindle servo motor of CNC car can use plum blossoms. The advantage is that the price is relatively cheap. For the same size, the rotation limit of the plum blossoms is smaller than that of the diaphragm. The plum blossoms are shock-resistant and allowable. The axial deviation is larger than that of the diaphragm. The disadvantage is that the greater the deviation, the faster the pad in the middle will wear out, but the elastic body in the middle will produce gaps, and the service life is very short because the elasticity in the middle is even if imported raw materials (polyurethane) are used. How high the hardness is, there will be gaps after a few months of use.

   XNUMX. Rigid couplings are used for ball screws with high connection accuracy.The rigid coupling is simple in structure and easy to install.The cost is also relatively low.It can also buffer the relative offset of the load (torque) fluctuating shaft. It has the function of quantitative compensation; it has the function of different degrees of buffering and damping, and improving the working characteristics of the transmission system.Rigid can be used.

    XNUMX. The diaphragm is used to drive the servo motor.For example, CNC lathe and CNC milling, the XY axis of CNC milling belongs to the transmission servo motor, and the forward and reverse rotation are often used. The diaphragm is better than the plum blossom, and the diaphragm has high sensitivity and high precision.

    It should be noted during the installation process:
1. Coaxiality between the outer large end face of the coupling and the inner hole.
2. The positions of the satellite holes around the two couplings must be the same.
3. The shaft and the coupling hole must have a matching accuracy.
4. Because the motor speed is too high, the two couplings must be aligned in parallel.
The above information is provided by Ever-Power coupling based on years of experience!