Abstract: CNC machining technology in the modern manufacturing industry has a pivotal position, but in the process of machining, the problem of knife pattern has been a key factor in disturbing the quality of machining. This paper focuses on the problem of CNC machining parts to remove the knife pattern, analyzes the reasons for the knife pattern, discusses the key technology to remove the knife pattern, and puts forward the corresponding measures to solve the problem.
With the rapid development of manufacturing industry, CNC machining technology has been widely used in aviation, aerospace, automotive, mold and other fields. In the process of CNC machining, tooling is an important factor that affects the machining quality. Knife pattern not only reduces the surface quality of the part, but also may lead to problems such as fatigue fracture during the use of the part. Therefore, it is of great practical significance to study the technology of CNC machining parts to remove tooling.
Second, the reasons for knife pattern
- tool wear: in the process of CNC machining, the friction between the tool and the workpiece will lead to tool wear, resulting in knife pattern.
- tool parameter settings: tool geometry parameters, cutting parameters and other settings are not reasonable, which may lead to the generation of knife pattern.
- workpiece material: the hardness and toughness of the workpiece material and other properties will affect the cutting performance of the tool, thus affecting the generation of knife pattern.
- processing environment: processing, coolant, chips, etc. on the cutting performance of the tool impact, may lead to the generation of knife pattern.
Third, CNC machining parts to the knife pattern key technology
- choose the right tool: according to the workpiece material and processing requirements, choose a good cutting performance of the tool, is to reduce the knife pattern of the premise.
- Reasonable setup of tool parameters: Reasonable setup of tool geometry parameters, cutting parameters, etc., can improve the cutting performance of the tool and reduce the generation of knife pattern.
- optimization of machining process: optimization of machining process, such as the use of appropriate cutting speed, feed, depth of cut, etc., can reduce the probability of knife pattern generation.
- tool compensation technology: the use of tool compensation technology, you can adjust the cutting position of the tool in real time to reduce the generation of knife pattern.
- Selection and use of cutting fluid: Reasonable selection and use of cutting fluid can reduce the friction between the tool and the workpiece, and reduce the generation of knife pattern.
- Post-processing: After the completion of CNC machining, the use of grinding, polishing and other post-processing methods can remove the knife pattern and improve the surface quality of the parts.
IV. Conclusion-Remove CNC machining parts knife pattern
CNC machining parts to remove the knife pattern is a key link to improve the quality of machining. By analyzing the causes of the knife pattern, exploring the key technology to remove the knife pattern, and put forward the corresponding measures to solve the problem, can effectively reduce the impact of the knife pattern on the machining quality. At the same time, the processing enterprise should according to their own actual situation, constantly optimize the processing technology, improve the level of processing technology, so as to improve the processing quality of parts.