Reasonable selection of cutting speed. The cutting speed V is an important factor affecting the surface roughness. When machining plastic materials, such as medium and low carbon steel, low cutting speed is easy to produce scale, and medium speed is easy to form built-up edge, which will increase the roughness. By avoiding this speed region, the surface roughness value will decrease. Therefore, constantly creating conditions to increase the cutting speed has always been an important direction to improve the technological level.
Methods and measures for roughness reduction
Reasonable selection of feed rate. The size of the feed directly affects the surface roughness of the workpiece. In general, the smaller the feed, the smaller the surface roughness and the smoother the workpiece surface.
Reasonable selection of tool geometry parameters. Front and rear corners. Increasing the rake angle can reduce the extrusion deformation and friction when the material is cut, and also reduce the total cutting resistance, which is conducive to chip removal.
Choose the right tool material. A tool with good thermal conductivity should be selected in order to transfer the cutting heat in time and reduce the plastic deformation of the cutting area. In addition, the tool should have good chemical properties to prevent the tool from having an affinity with the material to be processed. When the affinity is too large, it is easy to produce built-up edges and scales, resulting in excessive surface roughness.
Choose the right cutting fluid. Correct selection of cutting fluid can significantly reduce surface roughness. Cutting fluid has cooling, lubricating, chip removal and cleaning functions.
In addition, the roughness can be reduced by increasing the corresponding process. Polishing, grinding, rolling, grinding and Haoke energy technology can be used. Compared with other processes, Haoke energy technology has a better processing effect, does not pollute the environment, and does not damage the machine tool.