1. What Is Laser Cutting?
Laser cutting is a thermal cutting process that uses a focused beam of light, called a laser, to melt, burn, or vaporize material. The laser beam is directed at the material surface, where it generates intense heat and energy, allowing it to cut through the material with high accuracy.
2. Main Components of a Laser Cutting Machine
Laser Source: Produces the laser beam. Common types include fiber laser, CO2 laser, and solid-state laser.
Cutting Head: Contains the focusing lens and nozzle. It directs and focuses the laser beam onto the material.
Motion System: Moves the cutting head or the material (or both) to follow the desired cutting path.
Control System: Receives digital input and controls the cutting process with high precision.
Assist Gas Supply: Delivers gases such as oxygen, nitrogen, or air to help with cutting, cooling, and clearing melted material.
3. How the Cutting Process Works
Step 1: Laser Generation
The laser source generates a high-powered beam of light.
Step 2: Beam Delivery and Focusing
The beam is delivered through mirrors or fiber optics and then focused through a lens to a tiny spot, concentrating the energy.
Step 3: Interaction with the Material
The focused laser hits the surface of the material, heating it rapidly to its melting or vaporization point.
Step 4: Material Removal
The molten or vaporized material is blown away by assist gas, creating a clean and narrow cut.
Step 5: Motion and Precision Control
The CNC (computer numerical control) system guides the laser to move along the programmed path, cutting the material with extreme accuracy.
4. Types of Materials That Can Be Cut
Laser cutting machines are commonly used to cut:
Metals like stainless steel, carbon steel, aluminum, copper
Non-metals like acrylic, wood, leather, plastic (mainly by CO2 lasers)
Special materials in battery and electronics industries
5. Advantages of Laser Cutting
High cutting precision and speed
Smooth and clean edges
Minimal material deformation
Can cut complex shapes and fine details
Low maintenance and automation-friendly
--Rayther Laser Lyra Zhang