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How to improve the surface quality of CNC machined parts?

CNC machining can solve the processing problems of some large and small batches of machining parts in industrial production. The processing of some precision parts can also be completed by the CNC machining center, but this improves the surface quality of the parts. In the actual operation process, how to improve the surface quality of the CNC machining parts?

1. Reasonably design cut-in and cut-out routes

When using CNC machining centers to process parts, the cutting-in and cutting-out routes should be designed to optimize the cutting angle of the machine tool. In order to achieve the effect of reducing cutter marks and ensuring that the quality of the surface is not affected, it is necessary to plan the cutting of the cutter. The cutting point of the tool mainly starts from the peripheral extension of the part, thereby ensuring a smooth contour surface. The cutting tool should try to choose a smaller feed rate, keep it cutting at a slow speed, and make the cutting smooth transition, so as to ensure the cutting quality.

2. Correctly select the cutting method

When using a CNC milling machine for processing, there are two methods of down milling and up milling. The finishing effect of down milling is better than up milling. Therefore, in the processing of parts, as far as conditions permit, try to select milling to improve the surface quality of the parts. In the turning of shaft parts, the same turning tool needs to be selected as much as possible for the processing of different journals, so that the marks caused by the tool joint can be better reduced.

3. Use new efficient tools

The efficiency and performance of CNC machining centers are inseparable from the tools. For the processing of parts with high precision requirements, not only should we pay attention to the perfect technological process, but also need to select and use new and efficient tools. Today’s tool optimization design can use new tool concepts, which can more reasonably solve the problems of mechanical processing safety, accuracy, surface roughness, high-speed cutting, and the ability to optimize the cutting path.

4. Use the best CNC machining program

Optimize the NC machining program to provide the best CNC data for machining, which can better improve the quality. Compared with ordinary machine tools, China CNC machining centers not only require operators to have a high level of operation in the processing of parts, but also a high level of programming and process analysis. In order to ensure machining accuracy, streamlining procedures need to be optimized to improve production efficiency.

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