The ball screw has high hardness and is usually cleaned after surface quenching to ensure its excellent wear resistance. The ball screw is usually connected with the driving part, and the rotation of the ball screw is directly or indirectly driven by the motor. The direct connection method can be used. That is, the motor output shaft is connected to the lead screw through a special elastic coupling, and the transmission ratio is 1. The motor can also be connected to the lead screw through other transmission links, such as timing belts, gears, etc.
Advantages of coupling ball screw:
1. It is easy to install, does not require high position accuracy, has a good ability to compensate the comprehensive offset of the two axes, and allows the axis deflection angle Less than or equal to 1 degree 30'.
2. Stable transmission, high efficiency and long service life. For low speed, heavy load, frequent forward and reverse rotation and impact load, the effect is more obvious.
3. The maintenance is simple, only one time of fatliquoring under normal temperature, and the period of fatliquoring under high temperature is 3-6 months.
4. Compared with similar gear couplings, the transmission torque is large, the application range is wide, and the cost is low.
At present, the ball screw and the coupling are mostly connected by a flexible coupling contour, but there are also key connections and rigid couplings. This is determined according to the use requirements and installation technical capabilities.
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