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Views: 9 Author: Site Editor Publish Time: 2021-11-16 Origin: Site
The small acrylic laser cutting machine emits laser and makes it form a high-power density laser beam through the optical system. The laser beam irradiates on the surface of the acrylic work-piece. And such a work-piece will reach the melting point or boiling point. At the same time, the compressed air coaxial with the beam blows away the molten or vaporized acrylic materials. As the laser beam and the work-piece moves, the cutting graphics appear on the acrylic material eventually. In this way, the best CNC for acrylic completes the cutting processing.
Acrylic, also known as Polymethyl Methacrylate, or PMMA, is a naturally clear, colorless polymer that is widely accepted as an alternative to glass. It is lightweight and durable, boasting resistance to shattering, scratching, weathering, UV light, and environmental wear-and-tear. Acrylic is also biocompatible, making it safe for regular human contact.
1. For acrylic carving, it is recommended to use the method of carving from the back, which is commonly known as back carving. Designed by computer software and then produced a mirrored back pattern for engraving, this way is both beautiful and natural.
2. Small acrylic laser cutting machine works best at low power and high speed.
1) If your acrylic material has coating or other additives, please increase the power by 10%, but keep the speed of using on unpainted acrylic. This provides more energy for the laser to cut paint. The material in question will determine the ideal frequency setting for your laser.
2) However, if you use cast acrylic, you can engrave with a high frequency of 10,000 – 20,000 Hz, and if you use extruded acrylic, you may want to engrave at a lower frequency of 2,000 – 5,000 Hz. A lower frequency will result in a low pulse, thereby increasing the pulse energy or reducing the constant energy in the acrylic. This phenomenon results in less boiling, less flame and slower cutting speed.
Generally speaking, it is easier to manufacture extruded acrylic than cast acrylic, which makes extruded acrylic cheaper.
In addition, the extruded acrylic is clean and smooth after laser engraving, and the edges are flame polished. After laser engraving, the product looks very clear, not like the frosted appearance after casting acrylic engraving. It is also softer in comparison and tends to stick during the rotating engraving process.
How thick of acrylic can you cut?
This will depend on the wattage of your laser cutter.
A 30 or 40-watt Epilog system will cut through up to one-quarter inch of acrylic. As you increase in wattage, you will be able to increase the thickness you can work with. A 50 or 60-watt machine will allow you to cut through closer to 3/8" of acrylic, and a 75 or 120-watt system will allow you to cut closer to 1/2" or possibly 3/4" with two passes.
The Advantages of Best CNC machine for acrylic:
1. The pattern of laser engraving, anti-counterfeiting function is strong, and graphic exquisite, fine lines, washing resistance, wear resistance.
2. Environmental protection and energy saving, no pollution, do not contain any toxic substances, convenient through the ROHS standard, convenient production.
3. Save material: laser processing with computer programming, can put the different shapes of products to suit cut, maximize the utilization rate of materials, greatly reduces the enterprise the cost of materials.
4. Precision: laser engraving the thin line in the material surface can reach 0.015 mm wide, laser cutting notch width is generally 0.1 ~ 0.5 mm, welding cold welding seam formation, no heat affected zone.
5. Material is not easily deformed: laser machine have fine laser beam, the high speed, energy concentration, quantity of heat is small, so to be processed material cause deformation of material also is very small.
6. Surface processing: laser engraving machine, welding surface without burr, good surface finish. It can greatly shorten the development period of new products.
