How does fiber laser marking machine work?

Compared with CO2 laser marking machine and YAG laser marking machine, fiber laser marking machine is in the leading position in laser marking technology. In other words, the fiber laser marking system represents the ultimate technology of laser marking with its extremely compact function and structure.This article is about the basic principle of the fiber laser marking machine.

The following knowledge points are listed below:

• The basic principle of the fiber laser marking machine

•  The key parts of the fiber laser marking machine

The basic principle of the fiber laser marking machine

Fiber Laser marking machine is an accurate, precise, extremely accurate and economical way for DPM (Direct Part Marking) of metals with non-contact, extremely durable laser engraving, etching and surface marking of your product. DPM, marking 2D data matrix codes, part numbers, serial number and any other required data logos, data matrix codes or serial numbers can be made on products and components, with a high-resolution finish. The fiber laser free maintenance.

the advantages of working with fiber laser, our stainless steel laser marking machines is the fact that we can incorporate many different Vision systems and automation such as Cognex and Allen Bradley, Siemens PLC’s into our laser systems to pull data in and then digitally analyze what was just marked and proof/grade it before the next parts are allowed to process. The important thing to keep in mind is that with our pulsed fiber laser etching systems you are proving a direct mark to the material you wish to process, meaning no messy inks, no messy sprays like Cermark or Thermark, using Fiber our laser marking stainless steel technology allows the manufacture to cleaning and easily mark metals without all the environmental and waste issues of the past. Our process requires no pre or post-processing and produce clean precise markings and labels that are extremely durable and resistant to wear.

The key parts of the fiber laser marking machine

1.  Fiber laser source

2. Galvo scanning system

3. Marking software

Fiber Laser source: fiber laser refers to a laser that uses rare earth-doped glass fiber as the gain medium. Fiber lasers can be developed on the basis of fiber amplifiers. Under the action of pump light, it is easy to form a power density increase in the optical fiber, which causes the laser energy level of the laser working material to "reverse the number of particles". When properly added a positive feedback loop (forming a resonant cavity), a laser oscillation output can be formed.

Galvo scaning system: mainly composed of XY scanning mirror, field lens, galvanometer and computer-controlled marking software. The corresponding optical components are selected according to the different laser wavelengths. Related options include laser beam expanders, lasers, etc. Its working principle is that the laser beam is incident on two mirrors (scanning mirrors), and the reflection angle of the mirrors is controlled by a computer. The two mirrors can be scanned along the X and Y axes respectively, so as to achieve the deflection of the laser beam, so that The laser focusing point of a certain power density moves on the marking material according to the required requirements, thereby leaving a permanent mark on the surface of the material. The focused light spot can be round or rectangular.

Marking Software: There are many kinds of marking software used on the laser marking machine, some are conventional, some are developed by ourselves, or the conventional software is redeveloped, mainly depending on what control card is used by the equipment manufacturer .In marketing most laser marking machine equip software is EZCAD, this software uses more than convenience, some laser company use copy EZCAD, The price have big different between Genuine EZCAD and copy EZCAD.