How do we control precision metal processing surface roughness?
Is an important index in measuring precision machining
surface roughness, it refers to the workpiece is processed with smaller surface roughness spacing and small peak valley.
If the distance between the two peaks or two troughs is very small, precision metal processing parts of high precision, has the micro geometry error, reasons are mainly caused by the interaction between cutter and workpiece, the extrusion and friction between them and the surface of metal deformation and so on.
Precision hardware and the smaller the surface roughness of the machined part, it means the processed surface more smooth.
Roughness value will directly affect the size of the subsequent parts when using matching properties, wear resistance, contact stiffness, vibration and noise, etc. , is greatly affects the service life and reliability of the products, especially in small precision machinery parts processing, the surface roughness value directly determines the size of the parts is qualified.
The fine turning processing, the surface roughness in the main affected by feeding.
With the increase of feed, the increase of surface roughness;
Followed by cutting speed, high precision metal processing cutting speed can get lower surface roughness value;
Finally, the cutting depth, increase the cutting depth can make cutting force increased significantly, the greater the surface roughness, it is also need to pay attention to in the precision machining.
If it is fine cutting, the fluctuation of cutting force is small, on the influence of surface roughness is small.
In the use of cutting tool, the surface roughness or main Angle with the increase of tip arc radius and caused by the decrease of the Angle is reduced, with minimal quantities of lubricant and the other and special auxiliary processing method, etc. , can also achieve the goal of lower precision machinery parts processing surface roughness.
The above information from shenzhen Xavier machining manufacturer company.
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