CNC machining technology is an application technology formed with the emergence, continuous development and gradual improvement of CNC machine tools. The direct research objects are numerical control equipment, control systems, numerical control programs and preparation methods. CNC machining technology is derived from traditional machining technology. It combines traditional machining technology, computer numerical control technology, computer-aided design and aided manufacturing technology.
When a programmer receives a CNC programming task for a precision part or product, the main tasks include:
1. Carry out the feasibility study of CNC machining technology according to the design drawings and related technical documents, and determine the processing method of CNC machining parts;
2. Select the type and specification of the CNC machine tool;
3. Select fixtures and supporting tools;
4. Select the tool and the tool clamping system;
5. CNC machining scheme and process planning;
6. Determine the processing area;
7. CNC machining process content design;
8. Write CNC machining programs;
9. CNC program debugging and process verification;
10. Finally complete all NC process documents, and file all documents.
CNC machining programming can start from the understanding of the design drawings to the coding of the NC process.
Ordinary CNC machining technology is the basis of CNC machining technology. Since the machining process is automatically controlled by computer, the CNC machining process has the following characteristics:
1. CNC machining technology is more complex than ordinary machining
The CNC machining process needs to consider the process of machining parts, the positioning and clamping method of the workpiece, and also needs to select tools, establish process routes, cutting methods and process parameters. The diversification of CNC machining technology is a characteristic of CNC machining technology, which is significantly different from traditional machining technology.
2. CNC machining process design must be very organized
Since CNC machining is automated, the adaptability of CNC machining is poor. Moreover, the influencing factors of CNC machining are more complex, and the design of CNC machining technology must be careful, rigorous and error-free.
3. The transmission of CNC machining technology is better
The CNC machining process that has been debugged, verified and validated by the trial cutting process has good performance in CNC machining practice, and can be used as a template for the subsequent processing of similar parts, which not only saves time but also ensures quality.
4. Before guiding the production, the CNC machining process must be OK in the actual test
Due to the high degree of automation, safety and quality are of paramount importance in CNC machining. Before directing the production, the CNC machining process must be OK in the actual test. However, in general mechanical processes, process documentation can be used directly on the production line.