This article mainly introduces the steps of CNC processing - taking CNC processing of aluminum parts as an example. CNC machining is a high-precision processing method that is widely used in machinery, medical, automotive, aerospace and other fields. During processing, multiple steps are required to complete the manufacturing of the product. If you are interested in our CNC services, please contact us by email or phone.

The steps of aluminum CNC processing will be introduced in detail below:

1. Blank piece preparation

Blank piece preparation is the first step in CNC aluminum, which mainly includes receiving the blank piece, testing the size and appearance of the blank piece, marking the positioning points, etc. The quality of the blank piece directly affects the processing accuracy and product quality, so the blank piece needs to be carefully inspected and confirmed.

2. Workpiece clamping

Workpiece clamping is the second step in aluminum, which mainly fixes the blank on the workbench. Different products have different clamping methods. The fixture must be designed before processing. Some products with complex structures require special fixtures. At the same time, it is necessary to evaluate the size of the blank and the number of CNC times. The quality of the early evaluation directly affects the subsequent processing time and processing cost. During the clamping process, attention must be paid to ensuring the position and angle of the workpiece to avoid errors during the processing.

3. Tool preparation

Tool preparation is the third step of CNC aluminum, and it is necessary to select the appropriate tool according to the processing requirements. When selecting a tool, you need to pay attention to factors such as the material of the tool, cutting speed, cutting amount and cutting angle. At the same time, the tools need to be carefully inspected and confirmed to ensure the accuracy and service life of the tools.

4. Program writing and input

Program writing and input is the fourth step of CNC aluminum. Before starting CNC processing, you first need to model and program, import the CAD file into the CAM software, and carry out cutting path planning, tool selection, speed setting, and each feed of the tool. distance and other operations to generate G code. It is difficult to model products with complex structures and requires more and more complex programming processes. The processing program needs to be checked and confirmed before program input to ensure the correctness and completeness of the program. During the program input process, attention must be paid to ensuring the correctness and reliability of the program to avoid accidents and errors during processing.

5. Workpiece processing

Workpiece processing is the most critical step in CNC aluminum parts, and it needs to be processed according to the requirements of the program. It is mainly processed according to the sequential method of roughing and finishing. The individual parts are roughly roughed or semi-finished first, and then finished. Then, a large number of parts are roughly processed uniformly, then semi-finished, and finally the mechanical finishing work is completed. Special attention should be paid to the gap after roughing and finishing, which must be buffered after a period of time. This is to allow sufficient recovery time for the deformation of the parts after roughing. After recovery, finishing can be carried out to improve the machining accuracy of the parts. thus increasing the pass rate of finished products. 

As shown in Figures, the inner cavity features are roughly milled, and the inner cavity and the positioning post combined with the fixture are processed. Then drill the holes on both sides and the small hole in the middle of the cavity, chamfer and remove the front edge, mill the reference angle of the rough blank, smooth the plane with the flying knife, and finish the positioning holes on both sides. During the processing process, attention needs to be paid to ensuring the quality and accuracy of cutting to avoid errors and quality problems on the machined surface. At the same time, it is also necessary to monitor and control the processing process, adjust processing parameters and correct errors in a timely manner to ensure the stability and accuracy of processing;

6. Monitoring and adjustment: During the processing process, it is necessary to continuously observe the processing status, and adjust the cutting tools and processing parameters in a timely manner to ensure the processing quality.

7. Workpiece surface treatment

After processing is completed, the CNC controller is turned off and the processed parts are taken out for inspection and surface treatment.

8. Workpiece inspection

Workpiece inspection is the sixth step in CNC aluminum processing. It mainly detects and inspects the processed workpieces to ensure the quality and accuracy of the product. Workpiece inspection mainly includes appearance inspection, dimensional inspection

and other aspects of inspection. If quality problems are found in the workpiece, adjustments and corrections need to be made in time to ensure the qualification rate and accuracy of the product.

The entire process of CNC aluminum processing can be completed through the above eight steps. It should be noted that the quality and accuracy of each step during the processing need to be strictly controlled to ensure the quality and accuracy of the final product. At the same time, it is also necessary to continuously optimize and innovate the processing process to improve production efficiency and corporate competitiveness. We hope it can be helpful to you. We will update the relevant sharing about CNC machining technology in a timely manner. Welcome to pay attention and collect it.