What is CNC laser or laser cutting machine?
In general speaking, CNC Laser or laser cutting, CNC stands for computer numerical control to control laser head to cut or engrave all kind of material per customers’ requirement. Laser can come from different source from low to high generate heat and power to cut through material. The power can be range from 1W to 10000W per factories made. The cutting laser or CNC laser can be seen in variety of manufacturers such as auto maker to produce and cut plastic, bag manufactures to cut or engrave leather, cloth, fabric and so. The focused laser beam is important to focus on the right distance to the material in order to get the best quality of cut or engrave. There is some gas such as oxygen, nitrogen and more to help during the cutting process. The CNC laser can cut all kind of shape, size, style per customer’s design. It can cut thicknesses of material depending on the power of the CNC laser, Laser cutter. CNC laser can also cut fast or slow depending on the machine’s structure and electric components.
To make the excellent CNC laser cutting machine, manufacturer must compose the great parts and great mechanics with great installation to achieve the excellent outcome of machine. Every components of CNC laser must be well working together as one. The main parts of CNC laser are laser source, laser power, laser amp meter, laser head, laser torque high controller, laser lens, reflection lens, focus lens, water cooling system for laser machine, servo motor, servo drive, CNC base structure, linear rail, linear actuator, cable carrier, wiring, transformer, planetary gearbox, switches and much more.
How to maintenance laser cutting and lens?
One of the highly need maintenance for the laser cutting machine is the lens. Lens is just like your eye’s glasses. If it’s dull, dirty, scratch then it will not perform its jobs well. The power, direction, life and accuracy of the laser will be determined on the maintenance of it.
Lens is one of the main parts of CNC laser CO2. When the lens is clear and standard, it will reflection or focus at the right direction and pass on the well ray energy to the material. The lens must be clean well with the 90 to 100% ethanol or alcohol. If particle or dirt is stuck on the lens and the laser, the heat of laser may burn the particle and easily damage the lens. Therefore, lens is suggested to have some air blow, or cleaner all the time. Another reason that lens can be damaged is due to the heat accumulation. More you keep hitting the laser lens, more the heat is keeping generating. Therefore, the lens needs to be well heat transfer design. Yes, if the surface of the lens is bigger, the heat transfer is better, but the cost of lens is also more. There is another way to do some heat treatment to lens by adapt the back of the lens with air cooling or water-cooling system. This way the lens can be well cooling with lifetime of the lens can be more effective.
What are the power sources of CNC laser?
There are several sources for laser source. The most common use is fiber laser, CO2 carbon dioxide laser, YAG yttrium aluminum garnet.
Fiber laser is commonly use for cutting metal such as steel, carbon steel, aluminum, stainless steel, titanium, copper, alu-zinc, zinc and more. It can also engrave some plastic but not well-cut plastic and non-metal material.
CO2 can be used to cut all kind of material and mostly use for non-metal such as wood, plastic, acrylic, abs, glass, fabric, leather. The high power of CO2 can be used to cut metal but it’s not common used and well used like fiber laser machine.
YAG in the past was used to cut material but for instability of the YAG laser beam the cut and beauty of the cut is not well equal, so nowadays commercial use YAG for welding, connecting part and so.
What can the CNC laser do?
CNC laser can cut, engrave, weld, connect, build 3D, heat, color and more. The application of CNC laser and laser cutting is very wide range. The most 3 common ones are cut, engrave and weld.
What is the focus lens and mirror lens different?
Focus lens is used to focus the laser beam almost end of nozzle. It has concave and convex curve to concentrate the laser beam so the laser beam will have the maximum highest power to the object. The common use for focus lens of focus point are 30, 50, 63.6, 100, 101mm.
The mirror lens is used to reflect the laser beam to the position of the laser needs to be point. The laser reflection or mirror lens come in different size which are 20, 30, 40, 50mm. The bigger of laser mirror is better use in the way that heat transfer better and easier to reflect the laser beam.
How to build good CNC laser?
Building the good CNC laser or laser cutting machine is a big deal. This is the art of mechanic with electric with well design working together to make the perfect CNC laser machine. For example, CNC fiber laser needs 80m/min running machine. The body of the CNC laser (laser cutting machine) needs to be strong, rigid and heavy. So that the base will not be moving or shaking around. Therefore, a lot of steel, metal are needs to be built well. For the running part such as rack, pinion, ball screw, rail, linear rail, linear bock, bearing and more are also needed to be well equipped and adjusted accordingly.