What is CNC machining process? (I want the concept) What is its main content?

NC machining refers to the process of machining parts on NC machine tools. The technological process of NC machine tool machining is basically the same as that of traditional machine tool machining, but there are also obvious changes. Machining method of controlling the displacement of parts and tools with digital information.

It is an effective way to solve the problems of variety, small batch, complex shape and high precision of parts and realize efficient automatic machining.

Generally speaking, the NC machining process mainly includes the following contents:

1, select and determine the parts and contents of NC machining;

2. Analyze the NC machining process of part drawing;

3. Process design of NC machining;

4. Mathematical processing of parts drawings;

5. Write the processing program sheet;

6. Making control media according to the program list;

7. Verification and modification of procedures;

8. Trial production of the first article and on-site problem handling;

9. Finalization and filing of NC machining process documents.

Extended data:

main feature

First, the process is centralized.

CNC machine tools are generally equipped with a tool holder and a tool magazine that can automatically change tools. The tool changing process is automatically controlled by the program, so the process is relatively concentrated. Centralized process brings huge economic benefits;

1. Reduce the floor space of the machine tool and save the workshop.

2, reduce or no intermediate links (such as intermediate inspection, temporary storage and handling of semi-finished products, etc. ), saving both time and manpower.

Second, automation.

When CNC machine tools are processed, there is no need to manually control tools, and the degree of automation is high. The benefits are obvious.

1, with lower requirements for operators:

An ordinary machine tool senior engineer can't be trained in a short time, while an unprogrammed CNC lathe operator needs a very short training time (for example, a CNC lathe operator needs a week, and a simple machining program can be written). Moreover, the parts processed by CNC workers on CNC machine tools are more accurate and time-saving than those processed by ordinary workers on traditional machine tools.

2, reduce the labor intensity of workers: CNC workers are excluded from the processing process most of the time, which is very labor-saving.

3. Stable product quality: The processing automation of CNC machine tools eliminates the fatigue, carelessness and human estimation errors of workers on ordinary machine tools, and improves the consistency of products.

4. High machining efficiency: CNC machine tools automatically change tools to make the machining process compact and improve labor productivity.

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