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What Is CNC Machining? Process Flow Explanation

CNC machining technology, also known as computer numerical control technology, is a technology that uses computers to achieve digital program control. This technology uses computers to perform sequential logic control functions on the movement trajectory of devices and peripheral devices based on pre stored control programs.

Due to the use of computers to replace CNC devices composed of hardware logic circuits, various control functions such as storage, processing, calculation, and logic judgment of input operation instructions can be achieved through computer software. The generated micro instructions are transmitted to servo drive devices to drive motors or hydraulic execution components to drive equipment operation.

CNC Machining

CNC Machining Process

Generally speaking, CNC machining technology mainly includes the following aspects

By analyzing the adaptability of CNC machining, select the parts and content for CNC machining.

Process analysis of CNC machining of parts based on the characteristics of the machining surface and the functions of CNC equipment.

Design the process for CNC machining.

According to programming needs, perform mathematical processing on the parts.

Write a machining program sheet.

Proofread and modify machining programs.

First piece trial processing and handling of on-site issues.

Prepare technical documents for CNC machining processes.

1.Adaptability analysis and part selection

At the initial stage of the process, manufacturing engineers conduct adaptability analysis to evaluate which parts are most suitable for CNC machining. This analysis considers the geometric shape, complexity, and production requirements of the parts to determine whether CNC machining methods should be used.

2.Process analysis

After selecting the parts, conduct a detailed process analysis to combine the characteristics of the parts with the functions of the CNC equipment. The goal of this stage is to determine the best processing methods and processes to ensure the expected results are achieved in production.

3.Process design

Based on the results of process analysis, manufacturing engineers develop specific CNC machining processes. This includes developing cutting paths, selecting cutting tools, determining machining sequences, and setting up machine tools. Process design is a crucial step in ensuring successful processing.

4.Mathematical processing

Perform mathematical processing on parameters in process design to generate CNC programs. This may include mathematical calculations such as tool radius compensation and coordinate transformation to ensure that the CNC system can accurately execute the machining path.

5.Write processing program sheet

Translate the results of mathematical processing into actual CNC programs and develop detailed machining program sheets. This document documents the specific steps and parameters of CNC programming for use in actual production.

6.Proofreading and Modifying Processing Programs

After writing, proofread and make possible modifications. Ensure that there are no errors in the program and that it can run normally during actual machining.

7.First piece trial processing and problem handling

Perform the first actual machining and check the quality and accuracy of the parts. At this stage, engineers need to promptly address any issues discovered to ensure that production can proceed according to design requirements.

8.Technical document preparation

Finally, organize all relevant technical information into files for future production and maintenance. This may include information such as programs, process files, equipment settings, etc.

Conclusion

Overall, CNC machining technology is a precise and complex manufacturing process that achieves efficient and precise machining of parts by fully leveraging the advantages of computer numerical control technology.

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