In the Shenzhen precision parts machining process factors affecting the surface roughness are mainly cutting dosage, tool geometry parameters and so on. Want to improve the need to start from these aspects:
1. cutting amount
The larger the feed, the higher the height of the residual area, the rougher the surface of the part. Therefore, reducing the feed amount can effectively reduce the surface roughness value.
The effect of cutting speed on surface roughness is also great. When cutting elastomeric materials at medium speed, the surface roughness value of the machined parts is large because of the easy generation of chip accumulation and large plastic deformation. Usually use low speed or high speed cutting elastomeric materials, can effectively avoid the generation of chip tumor, which has a positive effect on reducing the surface roughness value.
2. Tool geometry parameters
In the machining of precision parts, the main deviation angle, sub-deviation angle and the radius of the tool tip arc have a direct impact on the surface roughness of the parts. In the case of a certain feed, reducing the main and sub-deflection angles or increasing the radius of the tool tip arc can reduce the surface roughness value. In addition, appropriately increasing the front and rear angles can reduce the cutting deformation and friction between the front and rear tool faces, and inhibit the generation of tumor chips, which can also reduce the surface roughness value.
After solving these problems, the surface roughness problem can be greatly reduced.