1. Influence on wear resistance: the rougher the machined surface of the products of cnc4 axis, the smaller the useful contact area between the mating surfaces, the greater the pressure, the greater the conflict resistance, and the faster the wear.
2. Affect the stability of fit: for clearance fit, the coarser the surface, the easier it is to wear, making the intermediate gap gradually increase during the working process; For the interference fit, because the micro convex peak is squeezed flat when equipped, the essential useful interference is reduced, and the connection strength is reduced. It is opened into precision hardware.
3. Influence on fatigue strength: there are large troughs on the surface of rough parts, which are the same as sharp corners, notches and cracks, and are very sensitive to stress sets, thus affecting the fatigue strength of parts.
4. Impact on corrosion resistance: the rough surface of parts is easy to make corrosive gas or liquid penetrate into the inner layer of metal through the micro valley of the surface, forming surface erosion.
5. Affect the tightness: the rough surfaces cannot be closely bonded, and gas or liquid leaks through the cracks between the contact surfaces.
6. Influence on contact stiffness: contact stiffness is the strength of the fusion surface of the part to resist contact deformation under the action of external force. The stiffness of machinery depends on the contact stiffness between parts to a great extent.
7. Affect the measurement accuracy: the surface roughness of the measured surface of the part and the measuring surface of the measuring equipment will directly affect the measurement accuracy, especially when it is measured carefully.
