Article

what is a laser cutting machine?

LUKE LASER

Introduction to Laser Cutting Machine


A laser cutting machine is a cutting machine that uses a laser beam to process raw materials. The laser beam irradiates the surface of the workpiece to make the processed material reach the melting point or boiling point, and the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the laser beam and the workpiece moves, the goal of precise cutting is finally achieved.

Working Principle

Laser cutting is achieved by applying high power density energy generated by laser focusing. Under the control of the computer, the laser is discharged through pulses, thereby outputting a controlled repetitive high-frequency pulsed laser to form a beam with a certain frequency and a certain pulse width. The pulsed laser beam is guided and reflected by the optical path and focused by the focusing lens group. On the surface of the processed object, a small, high-energy-density light spot is formed. The focal spot is located near the surface to be processed, and the processed material is melted or vaporized at an instant high temperature.

Each high-energy laser pulse instantly sputters a small hole on the surface of the object. Under computer control, the laser processing head and the processed material perform continuous relative movement according to the pre-drawn graphics, which will process the object. Into the desired shape or pattern.

The process parameters (cutting speed, laser power, gas pressure, etc.) and movement trajectory during slitting are controlled by the numerical control system, and the slag at the slit is blown away by a certain pressure of auxiliary gas.

Composition

The laser cutting machine system generally consists of a laser generator, an (external) beam transmission component, a workbench (machine tool), a microcomputer numerical control cabinet, a cooler, and a computer (hardware and software).

The main structure has the following items:

  • Machine tool host
  • Laser generator
  • Outer optical path
  • CNC system
  • Power Supply
  • Cutting head
  • Machine console
  • Chiller
  • Gas cylinder
  • Air compressor
  • Air cooling dryer, filter
  • Suction dust collector
  • Slag discharge machine

Application

The application of metal laser cutting machine is very extensive, involving many industries, and it is one of the necessary equipment for many enterprises. The most common applications of laser cutting machines are advertising sign production (these are mainly stainless steel LOGO and logo cutting), sheet metal processing (sheet metal processing basically includes all metal materials, and cutting is the most important process), subway Parts, as well as the production of elevator casings, mechanical equipment casings, and kitchen utensils.

Widely used in sheet metal processing, advertising sign production, high and low voltage electrical cabinet production, mechanical parts, kitchenware, automobiles, machinery, metal crafts, saw blades, electrical parts, glasses industry, springs, circuit boards, electric kettles, medical micro Electronics, hardware and other industries.

 

What Are the Types of Laser Cutting Machines?


There are many types of laser cutting machines. According to the cutting materials, they can be divided into metal laser cutting machines and non-metal laser cutting machines.

According to the laser type, it can be divided into fiber laser cutting machine, CO2 laser cutting machine, YAG (solid) laser cutting machine.

According to the laser output power classification, it can be divided into high power laser cutting machine, medium power laser cutting machine, low and low power laser cutting machine.

Different types of laser cutting machines have different uses, so you should choose the corresponding laser cutting machine type according to your needs.

 

Why Use a Laser Cutting Machine?


  • Feature one

Laser cutting is a non-contact cutting process. There is no mechanical pressure on the workpiece. It is suitable for cutting brittle and hard materials. It can also cut difficult-to-process materials such as gold, silver, copper, and platinum. Will not cause tearing, damage, or chipping to processed materials.

  • Feature two

Laser cutting uses an adjustable and controllable laser beam with a power density of about 107 to 109W·cm-2 as a "cutting tool". It does not require any cutting or punching tools, and there are no such problems as tool wear and replacement.

  • Feature three

The laser can be easily coordinated with the computer for highly automated operation and can cut arbitrary complex curves and graphics. This is one of the main reasons why most customers choose laser cutting machines.

  • Feature four

Compared with oxyacetylene cutting and plasma cutting, laser cutting has the advantages of fast cutting speed, narrow gap, small heat-affected zone, neat cutting, no need for cleaning, and less material consumption.

 

What Can Laser Cutters Cut?

Safe Materials. The laser can cut or etch. The materials that laser can cut materials like wood, paper, cork, and some kinds of plastics. Etching can be done on almost anything, wood, cardboard, aluminum, stainless steel, plastic, marble, stone, tile, and glass.

 

What Materials Should Not Be Cut with a Laser Cutter?

Materials you should not process with a laser machine Leather and artificial leather that contains chromium (VI) Carbon fibers (Carbon) Polyvinyl chloride (PVC) Polyvinyl butyral (PVB) Polytetrafluoroethylenes (PTFE /Teflon) Beryllium oxide.

 

Final Thoughts

The above content mainly tells the basic knowledge of laser cutting machine, including its principle, type, advantages, application and so on. We hope this article will give you a basic understanding of what a laser cutting machine is. For more information about laser cutting machines, please visit our official website: https://www.hrlasercutter.com/

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