Machine tool guide classification
1) According to the nature of work, it can be divided into:
Main motion guide rail: The main motion of the moving rail seat, the relative speed between the guide rail pairs is high.
Feeding motion guide rail: The moving rail is used for feed motion, and the relative movement speed between the guide rail pairs is low.
Displacement rail: only used to adjust the relative position between the parts, there is no relative movement during processing, such as the guide rail for the tailstock of the lathe.
2) According to the nature of friction, it can be divided into:
Sliding guide rail: The characteristic of the sliding guide rail is that the frictional property between the auxiliary working faces of the guide rail is sliding friction.
Sliding rail: Hybrid friction rail.
Boundary friction rails.
Hydrodynamic guide rail.
Hydrostatic rail.
Rolling friction: There are rolling bodies between the auxiliary working faces of the guide rails, so that there is rolling friction between the two rail faces.
Rolling guide: ball guide.
Roller guides.
Needle roller guide.
3) According to the force situation can be divided into:
Open rails—rails that rely on external loads and component weight to keep the two rail faces in place over the entire length.
Closed rail—Use the pressure plate as the auxiliary rail surface to ensure the rail of the main rail surface.
4) According to different movement trajectories, it can be divided into:
Circular motion guide: The relative movement path of the guide rail pair is a circle, such as the faceplate and the base rail of the vertical lathe.
Linear motion guide: The relative motion of the guide rail pair is a straight line. Such as the slide of the ordinary lathe and the bed rail