# What are the reasons for the serial shaft of the reducer?

Anyone who has often dealt with machinery will know that,ReducerIt is an indispensable auxiliary equipment in some machinery. Because some machinery runs fast, it will be dangerous, so it is necessary to use a reducer to balance its movement speed. However, during the use of the reducer, the reason why the reducer is in series Master the following three points.

1. The input shaft loses its axial restraint due to broken teeth, resulting in a series of shafts, and the driven gear on the intermediate shaft is not tightly fastened to the shaft.In actual transmission, often because the interference between the driven gear and the intermediate shaft is not enough, the driven gear produces an axial series movement relative to the intermediate shaft, thereby causing the input shaft to have an axial series movement.Therefore, insufficient interference is the main reason for the tandem shaft of the reducer.In addition, the steering of the reducer also has a certain influence on the tandem shaft.

2. The gear machining deflection causes the serial axis.Driven gear machining skew on the intermediate shaft can cause skew.The gear machining is positioned on the outer circle and the end face, while the gear assembly is positioned with the inner hole. Sometimes the inner hole is not concentric with the outer circle, or the inner hole is not perpendicular to the end face, which will cause the processed gear to be offset from the center line of the inner hole. incline.For this kind of skewed herringbone gear, the plane where the center line is located is not perpendicular to the axis. When the gear rotates once, a certain point on the center line will reciprocate axially once, forcing the input shaft to also reciprocate axially. Move once.In the actual transmission, due to the different degrees of deflection of the two halves of the driven gears, for the input shaft, the axial string movement is the result of the combined effect of the different degrees of deflection of the two halves of the driven gears on the intermediate shaft.In addition, the driven gear on the output shaft also causes serial movement due to the gear machining deflection, but since the output shaft is fixed in the axial direction, the intermediate shaft is forced to move, thereby forcing the input shaft to move in series.

3. The gear helix angle error causes the serial axis.The two halves of the driven herringbone gear on the intermediate shaft and the output shaft will change the center line of the herringbone gear due to the error of the actual helix angle, resulting in a series of shafts. ③ When the reducer is subjected to positive and negative torque, the tooth thickness error, uneven wear and premature wear of the tooth surface, and deformation of the back of the tooth cause the tandem shaft.