The Laser Etching Machine: From Light Beam Control to Finished Product

Using a laser to engrave a three-dimensional object inside a transparent material is a complex process.The company explains the workings of its technology step by step, from laser generation, laser positioning, and material processing, helping customers to understand how the technology can be used to meet their customized needs.

Basic components of a laser engraving machine.

The core components of a laser engraving machine include the laser source, the laser beam control system, the three-dimensional positioning platform, and the fixture.The laser generator is responsible for producing the high-energy laser beam, while the beam control system adjusts the beam's path and focal point via a set of mirrors.A three-dimensional positioning platform ensures precise carving, and a material clamping device prevents the material from moving.

How does laser beam control enable precise carving?

The key to the success or failure of laser engraving is the precise control of the laser beam.This requires two steps:

The laser's energy and focus were adjusted.

The laser beam is focused through the lens assembly to a spot of a few microns in diameter, while the energy intensity is adjusted according to the material being cut (such as glass or crystal).If it is too weak, it will not be able to form a mark; if it is too strong, it may burn through the surface of the material.

Dynamic mirror positioning technology.

The galvanometer system acts like a "high-speed baton," using a rapidly moving mirror to move the laser point through the material to follow a preset pattern.In combination with three-dimensional data, it can carve out three-dimensional text, graphics and even miniature landscapes.

From design to finished product.

Users 'needs are usually focused on personalized customization.

3D modeling and data conversion.

First the designer uses computer software to create a 3D model, which is then divided into layers of 2D data.A laser then scans these data points, creating a series of microscopic explosions in the material which combine to form the desired three-dimensional effect.

Material pre-treatment and parameter matching.

Different materials require different parameters.When engraving crystal, for example, the usual practice is to reduce the pulse frequency to avoid internal cracks. When engraving acrylic, it is necessary to control the depth of focus to ensure that the image is clear and not blurred.

Quality control of the finished product.

After the carving is completed, the surface of the material may still have tiny particles of dust on it, and it needs to be cleaned and polished with ultrasonic equipment.Finally, they are inspected under lights, and the good ones will have an even scattering of light, while the flawed ones will have breaks or uneven brightness.It is recommended that beginners start with simple patterns and gradually adjust parameters to accumulate experience.