What are the technical requirements for precision slender shafts?

1. Surface roughness of the elongated shaft: The shaft diameter combined with the precision slender shaft and the transmission member is required to be 0.63 μm-Ra2.5 on the surface roughness, and the bearing diameter is combined with the bearing to support the shaft diameter. The surface roughness is 0.16μm-Ra0.63, but there is still a big difference.

2. Geometric precision shape: All the components of the axis focus on the accuracy of the geometry: the face of the outer cone, the degree of the cylinder, the neck of the shaft and the taper of Mohs, etc., so under normal circumstances It is to limit the tolerance to a certain range of dimensional tolerances. However, for the surface of the inner and outer circle that requires high precision, we should mark the tolerance on the designed drawing.

3. Precision and slender shaft dimensional accuracy: The journal can play a supporting role, but in order to effectively determine the position of the shaft, the accuracy requirements of the entire size will be made in general. On the contrary, the journal used to assemble the transmission member is less demanding in terms of dimensional accuracy.

4. Accuracy requirements of the slender shafts in mutual position: In fact, the accuracy requirements of the position of many shaft components are mainly determined by the position of the shaft in the whole machine and the function of the machine.