What is a Fiber laser cutting machine
The laser cutting machine is to focus the laser light emitted from the laser into a high-power density laser beam through the optical path system. The laser beam irradiates the surface of the workpiece to make the workpiece reach the melting point or boiling point. the high-pressure gas coaxial with the beam blows away the molten or vaporized metal. As the relative position of the beam and the workpiece moves, the material will eventually form a slit, so as to achieve the purpose of cutting. From the current application field of laser cutting machine and the technical requirements put forward by users, the future development direction of laser cutting machine is undoubtedly high power, large format, high efficiency, one-time molding, and high intelligence. As one of the top five laser cutting machine manufacturers in China,KRRASS has superb metal processing technology and cutting technology, and its products are sold in more than 120 countries abroad and have won unanimous praise from all manufacturers in the industry. Next, we will introduce you to laser cutting machines. related information.
The working principle of fiber laser cutting machine
The laser cutting machine uses the high power density energy generated by the focusing of the laser cutting machine. Under the control of the computer, the laser cutting machine outputs a controlled repetitive high-frequency pulse laser through pulse discharge, forming a beam with a certain frequency and a certain pulse width. The pulsed laser beam is transmitted and reflected through the optical path, and is focused by the focusing lens group.On the surface of the processed object, a high-energy density light spot is formed. The focus is located near the surface to be processed, and the processed material melts or evaporates at an instant high temperature. Each high-energy laser pulse instantly splashes a small hole on the surface of the object. Under the control of the computer, the laser processing head and the material to be processed perform continuous relative movement and point positions according to the pre-drawn graphics, so that the object is processed into the required shape.
The process parameters (cutting speed, laser power, gas pressure, etc.) and movement trajectory in the cutting process are controlled by the CNC system, and the slag in the slit is blown off by the auxiliary gas with a certain pressure.
The composition of the fiber laser cutting machine
- Laser souce supply:
The high-voltage power supply for laser oscillation is supplied, the generated laser light passes through the reflector, and the light guide system directs the laser light to the direction required for cutting the workpiece.
- Laser oscillator:
The main equipment for producing laser
- Refractive mirror:
Used to direct the laser in the desired direction. In order to prevent the beam path from malfunctioning, all mirrors must be protected with protective covers.
- Cutting torch:
The cutting torch mainly includes parts such as the gun body, focusing lens and auxiliary gas nozzle.
- Cutting work platform:
It is used to place the workpiece to be cut, and can move it correctly and accurately according to the control program, usually driven by a servo motor.
- Cutting torch driving device:
It is used to drive the cutting torch to move along the X-axis and Z-axis according to the program, and it is composed of transmission parts such as a servo motor and a screw rod.
- Numerical control device:
Control the movement of the cutting platform and the cutting torch, and also control the output power of the laser.
- Operation panel:
Used to control the working process of the entire cutting device.
Including laser working medium gas cylinder and auxiliary gas cylinder, which are used to supplement the working gas of laser oscillation and supply auxiliary gas for cutting.
- Cooling water circulation device:
Used to cool the laser oscillator. A laser is a device that converts electrical energy into light energy. For example, the conversion efficiency of a carbon dioxide gas laser is generally 20%. The remaining 80% of the energy is converted into heat. The cooling water takes away excess heat to maintain the normal operation of the oscillator.
- Air dryer:
It is used to supply clean dry air to the laser oscillator and the beam path to keep the path and the mirror working normally.
What models of fiber laser cutting machines are available?
The choice of laser cutting machine model is based on the size of the customers’ own processing material. At present, most manufacturers’ sizes are 1500X3000, 1500X4000, 1500X6000, 2000X4000, 2000X6000, 2500X6000, 2500X8000. These are some of the standard sizes for customers. Choose, customers can determine the model they need to buy according to the size of their processing materials.
What are the brands of laser sources for laser cutting machines?
For a series of brands, customers choose according to their own budget. The difference of laser brands lies in the optical loss of the laser transmitter. The current market situation, IPG has the smallest optical loss during the service life, and the choice of laser is the power, 1000W. It is recommended that customers choose Chinese brand MAX or Racyus for 3000W. IPG is recommended for power above 4000W.
What type of transmitter is the most purchased on the market?
According to the current market, due to the large drop in the price of transmitters, customers generally choose laser cutting machines from 2000W to 4000W when choosing lasers.