The arrangement of the gear shaft machining sequence sh […]
The arrangement of the gear shaft machining sequence should be based on the principle that the base surface is first, first coarse and then fine, first and second. After the center hole is prepared for the general part of the gear shaft, the outer circle is machined, and then the other parts are machined, and the coarse and fine machining is performed, and the separation is performed separately. In the process of gear shaft machining, the heat treatment is used as a mark, and the roughing process is performed before the quenching and tempering treatment, and the semi-finishing is performed before the quenching treatment, and the finishing is performed after the quenching. This separates the various stages, ensuring that the main finishing of the surface is carried out in the back, not for surface processing, for other reasons, because stress affects the main precision of the surface.
According to the shape of the axis of the gear shaft, the shaft can be divided into two types: crankshaft and straight shaft. According to the bearing condition of the axis, it can also be divided into the following three types:
1 shaft, when working, not only can withstand the bending moment but also withstand the torque, is the more common shaft in the machine, such as the shaft in various reducers.
2 mandrel, used to support the rotating parts, can only bear the bending moment can not transmit the torque, some of the mandrel can be rotated, such as the axle of the railway vehicle, etc., some of the mandrel can not be rotated, such as the shaft supporting the pulley.
3 drive shaft, mainly used to transmit torque instead of bending moment, such as the long optical axis in the crane moving mechanism, the drive shaft of the car, and so on.