What are the advantages and disadvantages of soft shaft and hard shaft?

Flexible shaft is a shaft with small rigidity, small elasticity and free bending transmission. It is used to connect different shafts and two shafts that are not in the same direction or have relative motion to transmit rotary motion and torque. Rotational motion and torque can be flexibly transmitted to any position.

Application: The flexible shaft is named according to its purpose. In mechanical design, as a non-linear or non-planar transmission element, it can simplify the transmission machinery and has high transmission accuracy, and is widely used in various departments, such as concrete vibrators, pneumatic picks, marine pumps, transmission devices of medical instruments and machine tools, and automobile odometer. In addition, the flexible shaft can also alleviate the impact.

1. 1 is divided into: rotating shaft, main shaft and transmission shaft.

1. 1. 1 rotating shaft-the shaft that bears both bending moment and torque when working.

1. 1.2 spindle-a spindle (fixed spindle, rotating spindle) that bears bending distance but does not transmit torque when working.

1. 1.3 transmission shaft-a shaft that only transmits torque without bearing bending moment or with little bending moment when working.

1.2 is divided into straight shaft, crankshaft and steel wire flexible shaft according to the shape of the axis.