What should I do if the precision machined surface is too rough?

The main reason for the processing technology, from the perspective of our hardware precision technology, there are actually many reasons that will have a certain impact on the surface roughness of the parts. It is mainly caused by the material of the tool and the workpiece, and the conditions of the numerical control. Regarding the geometric reasons, it is mainly affected by the shape of the tool, and the declination angle and the secondary declination angle will have a greater impact on the surface roughness.

When we reprocess the plastic material, we will also form band cutting to form a built-up nodule, and the hardness is still very high. And extrusion can deform the metal material, which will seriously deteriorate the surface roughness, and the appearance of the accumulated tumor will be completely irregular, so it is easy to make the workpiece surface appear different depths and widths. For example, the rotation speed does not match the cutting speed, the material is too hard and the amount of the tool is too much, the workpiece is not pressed tightly, and the workpiece is too elastic, rubber products such as the tool body are too long, the tool bar shakes during processing, and the machine tool itself, such as: Excessive clearance for activities such as bars and rails, etc. These will inevitably increase the roughness of the surface of the parts.

What are the process standards for CNC precision machining:

Ordinary machine tools are more and more difficult to meet the needs of machining precision parts. At the same time, due to the improvement of production levels, the price of CNC machine tools is constantly increasing decline. CNC precision machining mainly includes ultra-precision turning, mirror grinding and grinding.

The primary premise of CNC precision machining is the accuracy of the process benchmarks. The benchmarks on the mechanical drawings are all represented by capital letters A, B, C, D, etc. with a specific circled benchmark symbol. When the reference symbol is aligned with the face and the extension line of the face or the size limit of the face, it means that the face is the reference. When the datum symbol is aligned with the dimension line, it means that the entity center line of the dimension is the datum. As mentioned above for you, the precision of craftsmanship is a relatively general statement. Precision parts processing

Assembly datum refers to the precision used to determine the position of parts in parts or products during assembly. The measurement datum refers to the specification for the size and position of the machined surface to be measured when the part is inspected. The positioning datum refers to the datum used for positioning the workpiece in the machine tool or fixture during processing.

The process benchmark of CNC precision machining is the premise to ensure the production of parts with excellent quality.

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