Principle and Advantages of CNC Metal Laser Cutting Machine

CNC metal laser cutting machine can cut various metal materials

What is a CNC metal laser cutting machine? CNC metal laser cutting machine is a very important branch of laser cutting machine, which is a new type of laser equipment that uses a CNC system to control the laser cutting machine. The laser cutting machine uses high heat laser to irradiate the surface of the metal workpiece to achieve cutting of the workpiece. CNC metal laser cutting machine is a high-tech opto electromechanical integration equipment, dedicated to cutting metal materials, and has been widely used in aviation, aerospace, electronics Electrical appliances, subway accessories, automobiles, machinery, precision accessories, ships, metallurgical equipment, elevators, household appliances, craft gifts, tool processing, decoration, advertising, and other metal sheet and pipe manufacturing and processing industries. Below, we will learn about the principles and advantages of CNC metal laser cutting machines.

Cutting principle of CNC metal laser cutting machine

A metal laser cutting machine uses a laser tube to emit light, and then uses a reflector and focusing mirror to reflect and focus the light onto the laser head. By emitting the focused strong light onto the material that needs to be cut or carved, it quickly melts due to high temperature to achieve the purpose of cutting and carving. During the cutting process, auxiliary gases suitable for the material being cut are also added. During steel cutting, oxygen is used as an auxiliary gas to produce exothermic chemical reactions with molten metal to oxidize the material, while also helping to blow away the slag inside the cutting seam. The auxiliary gas entering the nozzle can also cool the focusing lens, preventing smoke and dust from entering the lens seat and contaminating the lens, causing it to overheat.

Advantages and characteristics of CNC metal laser cutting machine

Compared with other thermal cutting methods, CNC metal laser cutting machines have the overall characteristics of fast cutting speed and high quality. Specifically summarized as follows.

Good cutting quality

Due to the small laser spot, high energy density, and fast cutting speed, laser cutting can achieve good cutting quality.

The laser cutting incision is narrow, with both sides of the cutting seam parallel and perpendicular to the surface, and the dimensional accuracy of the cutting part can reach ± 0.03mm.

The cutting surface is smooth and beautiful, with a surface roughness of only a few tens of micrometers, and even laser cutting can be used as the final process without mechanical processing. The components can be directly used.

· After the metal material is laser cut, the width of the Heat-affected zone is very small, and the performance of the material near the slit is almost unaffected. Moreover, the deformation of the workpiece is small, the cutting accuracy is high, the geometry of the slit is good, and the cross section of the slit presents a relatively regular rectangle.

Fast cutting speed

Metal materials do not need to be clamped and fixed during laser cutting, which not only saves tooling fixtures but also saves auxiliary time for loading and unloading.

Non-contact cutting

When laser cutting metal materials, the cutting torch has no contact with the workpiece and there is no tool wear. Processing parts of different shapes does not require changing the “tool”, only changing the output parameters of the laser. The laser cutting process has low noise, low vibration, and no pollution.

The modern CNC metal laser cutting technology has become quite mature, gradually becoming the “sword” that people dream of pursuing as “cutting iron like mud”.

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