Introduction to common sense of CNC machining

2022-08-19 09:59

To create CNC technology functions and CNC technology plans:

(1) The CNC process considers the process of machining parts, fixtures and positioning of machined parts, tool selection, simple processes in conventional processes, cutting methods and process parameters, etc.

(2) CNC machining technology design is mainly used to guide CNC programming. Our company and NCNCNCNC technicians combine programming responsibilities, and the programmers are responsible for the entire mold CNC machining technology, which improves work efficiency.

(3) CNC machining has a high degree of automation and many influencing factors. Quality and safety itself is very important in CNC machining and must be guaranteed.

(4) The preparation of CNC machining process should have strict strip rationality. CNC technology is complex and there are many influencing factors. It is necessary to think deeply about the whole process of CNC machining. It has good strip rationality and can program CNC technology well. CNC machining has a high degree of automation and poor adaptability. When problems occur, it is difficult for operators to correct them on the spot. Light-weight personnel create machining defects. When a safety accident occurs in the middle, CNC technology should be systematically designed in advance.

(5) The inheritance of CNC technology is good. Proven to be a good CNC technology in production, templates can be created, saved as files, and then recalled when machining similar parts, saving time and ensuring quality.

The CNC machining process plan is considered as the state space of a series of processes, from the initial state of the part (core/mold embryo) to the final state (part). The ordering of CNC sequences must conform to the following general rules

1. The main parameter is followed by the auxiliary parameter.

2. Treat the face first and then the hole. Milling and then drilling.

3. Roughing first and then finishing.

4. The inner cavity is processed first, and then the outer shape is processed.

5. Depending on the sequence of the process, the diameter of the tool varies from large to small.

6. The processing of the previous process does not affect the chuck and positioning of the next process.

7. Put the same tooling and jigs together to reduce duplicated jigs and positions.

8. CNC technical parameters must be concentrated.

9. Do not use program commands that weaken the rigidity of the part first.

A good CNC machining process plan should consider the following points

Whether the technical requirements of the parts can be met, whether the CNC machining efficiency can be improved, the processing cost is low, and the quality control is good.

Therefore, the overall CNC machining process plan is usually as follows:

1. Selection of CNC machine tools.

2. Select a processing method.

3. Determine the clamping method of the part and select clamping.

4. Positioning method.

5. Inspection requirements and inspection methods.

6. Select Tools.

7. Error control and tolerance control during processing.

8. Define the CNC process.

9. CNC sequence.

10. Select cutting parameters.

11. With CNC machining program table.

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