1. Design and Programming
For example, when designing a mechanical part, its shape, dimensional accuracy, and matching requirements need to be determined to ensure that the part can work properly after assembly.
Process planning:
After completing the product design, CNC machining will carry out process planning. Determine the processing method, tool selection, cutting parameters, processing sequence, etc.
For complex parts, multiple processes may be required, such as roughing, semi-finishing, and finishing. Process planning should consider factors such as processing efficiency, processing quality, and cost.
Programming:
According to the process planning, use CAM (computer-aided manufacturing) software for CNC programming. Generate CNC machining programs, including tool paths, cutting parameters, feed speeds, etc.
During the programming process, attention should be paid to issues such as tool interference, cutting force control, and guarantee of machining accuracy. After programming is completed, the program needs to be simulated and verified to ensure the correctness of the program.
2. Preparation work
Material preparation:
According to the product design requirements, CNC machining selects appropriate materials. Common materials include metal materials (such as steel, aluminum, copper, etc.), plastic materials, etc.
The selection of materials should consider factors such as product performance requirements, processing difficulty, and cost. For example, for parts with high strength requirements, alloy steel materials may need to be selected; for parts with high appearance requirements, materials with good surface quality may need to be selected.
Tool preparation:
Select appropriate tools according to the CNC machine processing requirements. There are many types of tools, such as milling cutters, drills, turning tools, etc.
The selection of tools should consider factors such as processing materials, processing methods, and processing accuracy. For example, when processing materials with higher hardness, tools with higher hardness need to be selected; when processing parts with higher precision requirements, tools with higher precision need to be selected.
Fixture preparation:
Select appropriate fixtures according to the shape and processing requirements of the parts. The function of the fixture is to fix the parts and ensure the stability and accuracy during the CNC machine processing.
The selection of fixtures should consider factors such as the shape, size, and processing method of the parts. For example, for parts with irregular shapes, special fixtures may need to be designed.
3. Processing operation
Machine tool debugging:
Input the written CNC machining program into the CNC machine tool and debug the machine tool. During the debugging process, check whether the various parameters of the machine tool are correct, such as the movement direction of the coordinate axis, feed speed, cutting depth, etc.
At the same time, check whether the tool is installed correctly and whether the clamping force of the fixture is appropriate. After debugging, test processing is carried out to check whether the processing accuracy and surface quality meet the requirements.
Processing process:
After the machine tool is debugged, formal processing operations are carried out. During the processing, the machine tool automatically processes according to the CNC processing program. The operator should pay attention to the operation status of the machine tool, such as the wear of the tool, the change of cutting force, and the guarantee of processing accuracy.
For complex parts, multiple processes may be required. After each process is completed, dimensional measurement and surface quality inspection should be carried out to ensure that the processing quality meets the requirements.
Quality control:
During the CNC machine processing, quality control should be carried out. There are many methods of quality control, such as dimensional measurement, surface quality inspection, hardness testing, etc.
For key dimensions and important surfaces, strict quality control should be carried out to ensure that the processing quality meets the requirements. If quality problems are found, they should be adjusted and processed in time.
IV. Post-processing
Deburring:
After processing, burrs may exist on the surface of the parts. Deburring treatment is required to improve the surface quality and performance of the parts.
There are many ways to deburr, such as manual deburring, mechanical deburring, chemical deburring, etc. To choose the appropriate deburring method, factors such as the material, shape, and size of the parts should be considered.
Surface treatment:
Depending on the requirements of the product, surface treatment may be required. There are many methods for surface treatment, such as electroplating, spraying, oxidation, etc.
The purpose of surface treatment is to improve the corrosion resistance, wear resistance, and aesthetics of the parts. To choose the appropriate surface treatment method, factors such as the use environment, performance requirements, and cost of the product should be considered.
Inspection and packaging:
The final inspection of the processed parts, including dimensional accuracy, surface quality, hardness, etc., is carried out. Ensure that the parts meet the design requirements and quality standards.
After passing the inspection, packaging is carried out. The packaging should consider factors such as the shape, size, and transportation requirements of the parts to ensure that the parts are not damaged during transportation and storage.
Sejow can provide OEM/ODM Wiring Harness ，Cnc Machining Parts based on your requirements. Wiring harness, also known as Cable Harness, CNC machining parts are assembly of Cnc Milling Service which transmit signals or electrical power. In the future, Sejow will continue to uphold the business philosophy of "integrity, responsibility, and innovation", provide customers with better products and services, and work together to create a better tomorrow. Consultation hotline: 0755-29426119.
Sejow (Shenzhen) Industrial Co., Ltd.
