CNC plasma cutting machine is currently the main equipment for medium and thick metal sheets. Whether it is a domestic or imported plasma power supply, their working principles are the same, and the difference lies in the cutting speed and cutting accuracy. How to improve the cutting accuracy of CNC plasma cutting machine?

1. Control system

The height and stability of the cutting nozzle have a lot to do with the control system. The control system is also one of the important reasons that affect the cutting accuracy of the CNC metal plate plasma cutting machine, so it is very important to choose a better control system;

2. The matching degree between the cutting speed and the working air pressure,

The parts cut by the CNC cutting machine can be directly welded and applied without machining. But CNC plasma cutting machine uses plasma arc for cutting, which is compared with oxygen cutting. There are still some defects, mainly reflected in the large inclination of the cutting surface, and the finish is not as good as oxygen cutting. The main criteria for evaluating the quality of CNC plasma cutting are: the inclination of the cutting surface, the depth of the cutting line, and the amount of slag.

If the manual adjustment method is adopted, the height of the cutting nozzle from the steel plate is controlled at 6~8mm. Through a series of cutting tests, it can be proved that the cutting quality has been significantly improved. In addition, in order to improve the cutting quality, we have carried out a comprehensive cutting test, analyzed and sorted out the test data, and obtained some of the best working parameters of the CNC plasma cutting machine. The CNC metal plate plasma cutting machine can cut various workpieces with complex shapes, and has the advantages of fast cutting speed, high efficiency, good cutting surface quality, accurate cutting size, and small thermal deformation of the workpiece.

The inclination of a high-quality cutting surface should be below 30, the depth of cutting lines should be below 0.15mm, and the slag should be less and easy to remove. When the height of the cutting nozzle from the steel plate is controlled by the arc voltage height controller, the dynamic positioning accuracy can reach ±0.013, so it can ensure that the height of the cutting nozzle and the steel plate remains unchanged, so the inclination of the cutting surface is small and uniform , and the finish is good. When adjusting the height of the cutting nozzle from the steel plate by hand, the steel plate to be cut should be placed as flat as possible to reduce the adjustment times of the cutting torch and ensure the stability of the cutting torch during the cutting process.

CNC metal plate plasma cutting machine and CNC optical fiber metal cutting machine are both advanced electromechanical integration equipment for cutting metal sheet, and have been widely used in shipbuilding, machinery manufacturing and other industries. There are many factors that affect the cutting quality of CNC plasma cutting machine. In addition to the design parameters of the cutting machine, it is also related to operation control and cutting process.