CNC machining process features

January 04, 2023

CNC machining technology is an application technology that has been continuously developed and gradually perfected along with the generation of CNC machine tools. The object of the research is the integration of numerical control equipment to complete the entire process of CNC machining. The most direct research object is closely related to CNC equipment. CNC equipment, control systems, numerical control programs and programming methods. CNC machining process originates from the traditional processing technology, organically combines the traditional processing technology, computer numerical control technology, computer aided design and auxiliary manufacturing technology. One of its typical features is that the ordinary processing technology is fully integrated into the numerical control processing technology. CNC machining process is the basis of numerical control programming, high-quality CNC machining program, from careful and detailed technical feasibility analysis, overall process planning and CNC machining process design.

The programmer received a numerical control programming task for a part or product. The main tasks included the feasibility analysis of the NC machining process based on the design drawing of the part or product and related technical documents, and the determination of the machining method for the finished part's numerical control machining; the type of the CNC machine was selected. And specifications; determine the processing coordinate system, select fixtures and their auxiliary tools, select tools and tool mounting systems, plan the NC machining program and process routes, divide the processing area, design the contents of CNC machining operations, write NC programs, and perform NC program debugging. Actual processing validation, and finally completes, solidifies and archives all CNC process documents. NC programming can be simply understood as starting from the design drawing of the part until the entire process of NC programming is completed.

CNC machining process is the core of NC programming. Only by properly and scientifically integrating CNC machining technology into NC programming can programmers produce high-quality and high-level NC programs. NC programming is also gradually improving the process of CNC technology.

Ordinary processing technology is the basis and technical guarantee of the numerical control processing technology. Because the numerical control processing uses the computer to automatically control the mechanical processing process, the numerical control processing technology has the following features.

1. CNC machining process is much more complicated than ordinary machining processes

CNC machining process to consider the processing of the parts of the process, the processing of the parts of the benchmark and the positioning of the clamping method, but also to select the tool, the development of process routes, cutting methods and process parameters, etc., and these in the conventional process can simplify the processing. Therefore, the numerical control processing technology is much more complicated than the ordinary processing technology, and there are many influencing factors. Therefore, it is necessary to carry out a comprehensive analysis and reasonable arrangement of the entire process of numerical control programming, and then improve it as a whole. The same numerical control processing task can have multiple numerical control process schemes, either by selecting the processing position as the main line arranging process or by selecting the processing tool as the main line to arrange the process. The diversification of CNC machining processes is a feature of CNC machining processes and is a significant difference from traditional machining processes.

2. CNC machining process design must have a strict organization

Due to the high degree of automation of CNC machining, relatively speaking, the adaptive capability of CNC machining is poor. In addition, numerical control processing has many influencing factors and is more complex. It needs careful consideration of the whole process of numerical control processing. The numerical control process design must have good organization, that is to say, the design process of the numerical control processing process must be thorough, rigorous, and free of errors.

3. The succession of NC machining process is better

All the CNC machining processes that have been verified through commissioning, calibration and trial cutting processes and proved to be good in NC machining practice can be used as a template for similar processing of subsequent parts. This saves time and ensures quality. As the template itself is also a process of constant modification and perfection in the call, it can achieve the effect of gradual standardization and serialization. Therefore, the numerical control process has very good inheritance.

4. CNC machining process must be actually verified to guide production

Due to the high degree of automation of CNC machining, safety and quality are of utmost importance. CNC machining processes must be validated before they can be used to guide production. In ordinary machining, the craft files prepared by the technologist can be directly down to the production line to guide the production. Generally, the above complicated process is not required.

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Author:

Ms. Mirada Kuo

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