The general methods and steps of CNC machining technology can be summarized as the following key links:
First, analyze the processing drawings and determine the process
Analysis and processing drawings:
The process personnel first need to analyze the processing drawings provided by the customer in detail to clarify the shape, dimensional accuracy, surface roughness, workpiece materials, blank types and heat treatment conditions of the parts.
Determine the process plan:
According to the analysis results, select the appropriate machine tool, determine the positioning clamping device, processing method, processing sequence and cutting parameters and other factors.
Second, machine tool preparation and commissioning
Select machine tools and tools:
Select the appropriate CNC machine tools and tools according to the processing requirements to ensure that the performance of the machine tools and tools meet the processing requirements.
Machine debugging:
Debug the machine tool, including calibrating the CNC system, checking the lubrication system of the machine tool, confirming the reliability of the fixture, etc., to ensure that the machine tool is in the best working condition.
Third, programming and simulation
Write processing program:
Using CAM software to write machining program according to part drawing, including cutting path, tool movement, feed speed and other parameters.
Program simulation:
Run the program simulation in the programming software, check the correctness and feasibility of the program, and ensure that the program is correct.
Fourth, workpiece clamping and tool
Workpiece clamping:
Clamp the workpiece on the machine to ensure accurate positioning and reliable clamping.
Knife operation:
Use the tool to set the tool, determine the exact position of the tool in the workpiece coordinate system, and enter the tool data.
Fifth, processing operation and monitoring
Start machining:
The machining program is imported into the control system of the CNC machine tool to start the machining process.
Processing monitoring:
In the process of real-time monitoring of the running state of the machine tool and processing quality, pay attention to observe the tool wear, cutting force changes and other parameters.
Exception handling:
If abnormal conditions are found or the machining quality does not meet the requirements, the machine should be stopped immediately to check and adjust the cutting parameters or procedures.
Sixth, processing and testing
Processing completed:
When the program is finished, the machine will automatically stop processing. Turn off the machine power and remove the finished parts.
Quality inspection:
Quality inspection of the finished parts, including dimensional accuracy, shape accuracy, surface roughness and other indicators. If quality problems are found, the reasons should be analyzed and corresponding measures should be taken to improve.
Seventh, cleaning and maintenance
Clean up the site:
Clean up the machine table, jig, tool and other parts of the iron filings, oil and other debris, to keep the processing site clean and orderly.
Machine maintenance:
Carry out the necessary maintenance work on the machine tool, such as cleaning and lubrication, fastening screws, etc., to ensure that the machine tool is in good working condition for a long time.
In summary, the general methods and steps of CNC machining process cover a number of links from the analysis of processing drawings to the maintenance of machine tools. Each step requires strict control and precise operation to ensure that the final product can meet the design requirements and quality standards.
