CNC process plan

In high-speed and high-precision machining, the importance of the design of a numerical control process plan has been raised to a high position. The whole process of machining must be controlled. Any error will have a serious impact on the quality of the mold, so the process plan will play a decisive role in the quality of machining. CNC machining process design can be considered as the state control of a systematic process plan from part blank to part processing and forming. A good process plan is relatively difficult in the whole design process, which can only be obtained after continuous practice summary and modification. A large amount of information is to be considered in the design process, and the relationship between information is extremely complex, which must be guaranteed by the actual work experience of programmers. Therefore, the design quality of the process plan mainly depends on the experience and level of technicians.

Usually, a complete CNC machining process plan roughly includes the following contents:

1) CNC machine tool selection.

2) Processing method selection.

3) Determine the clamping method of parts and select fixtures.

4) Positioning method.

5) Inspection requirements and methods.

6) Select the tool.

7) Error control and tolerance control in machining.

8) Define CNC operation.

9) Numerical control sequence.

10) Cutting parameter selection.

11) Prepare the CNC process program sheet.

CAM software

Good software can also improve the processing quality and efficiency of molds, such as Unigraphics and cimiamtron. They are good mold processing software, especially the two kinds of software are rich in practical different processing strategies. They are widely used in NC milling programming, turning programming, and WEDM programming. They complement each other, which greatly improves the quality and efficiency of CNC machining. Cimarron can add the screw function when clearing the rough machining in the offset area, which will make the actual cutting more stable, eliminate the sudden change of the feed direction connected between adjacent tool paths, reduce the acceleration and deceleration of cutting feed, maintain a stable cutting load, prolong the tool life, and also play a good role in protecting the machine tool.

Software is just a tool. An excellent programmer has rich on-site machining experience and theoretical knowledge. At the same time, CNC programmers are skilled in software functions. Talents are the decisive factor in mold CNC machining and play a key role in the quality and efficiency of CNC machining. Therefore, we should establish a perfect training system for programmers. First of all, designers should practice in the post of numerical control operation for some time, and only after passing the strict operation examination can they carry out the design training of numerical control program. To ensure the CNC machining quality of the mold, there must be a good CNC program.

Operator

The operators of the machining center are the executors of CNC machining, and their control of CNC machining quality is also very obvious. They know the real-time status of machine tools, tool handles, tools, processing technology, software, and cutting parameters in the process of performing machining tasks, and their operations have a direct impact on CNC machining so the skills and responsibility of the machining center operators are also the key factors to improve the quality of CNC machining!

Summary

Although hardware equipment such as machining centers is very critical, talents are the decisive factor affecting the quality of CNC machining, because the professional ethics, skill level, and post responsibility of programmers and machine tool operators determine how effective various advanced equipment is can be play. We must pay attention to all aspects of processing, especially human factors, to make CNC machining center mold processing more and more extensive.

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