The difference between laser cutting and ultrasonic cutting
Principle of Laser Cutting
The principle of laser cuttingLaser cutting uses a focused high-power density laser beam to irradiate the workpiece, so that the irradiated material quickly melts, vaporizes, ablates or reaches the ignition point, and at the same time blows away the molten material with the help of the high-speed airflow coaxial with the beam, thereby Realize the cutting of the workpiece. Laser cutting is one of the thermal cutting methods.
Principle of Ultrasonic Cutting
When using ultrasonic technology for cutting, the back and forth vibration generated by the ultrasonic vibrator installed behind the spindle is transmitted to the outer circle of the grinding wheel through the base of the spindle and the grinding wheel blade, and converted into radial expansion movement. Through this vibration conversion method, the ideal vibration direction required for ultrasonic processing can be obtained.
The mechanical vibration generated by the ultrasonic generator can vibrate more than 20,000 blades per second, thereby locally heating and melting the material to be cut, so that the molecular chain is quickly broken and separated, thereby achieving the purpose of cutting the material. Therefore, ultrasonic cutting does not require a particularly sharp blade, does not require a lot of pressure, and does not cause chipping or damage to the material being cut. At the same time, because the ultrasonic vibration cutter is used, the friction is small, and the material is not easy to adhere to the blade by reducing the material. Frozen viscous and elastic materials (such as food, rubber, etc.) or materials that are not convenient to add decompression objects are particularly effective.
Laser cutting characteristics
As a brand-new processing method, laser processing has gradually been widely used in leather, textile and clothing industries due to its high precision, fast speed, simple operation and high degree of automation. Compared with traditional cutting methods, laser laser cutting machines are not only low in price but also low in consumption. And because laser processing has no mechanical pressure on the workpiece, the effect, accuracy and cutting speed of cutting products are very good. And it also has safe operation and maintenance. Simple and other functions. Can work continuously for 24 hours. The dust-free cloth non-woven fabric cut by laser will not turn yellow, will not automatically close the edges, will not wear, will not be deformed, will not harden, the size is consistent and accurate; it can cut any complex shape; high efficiency , Low cost, computer-designed graphics can cut shoelaces of any shape and size. Fast development speed: Due to the combination of laser and computer technology, users can realize laser engraving output as long as they design on the computer, and can change the engraving at any time. Products can be produced at design time.
Ultrasonic cutting characteristics
Ultrasonic cutting has the advantages of stable and reliable cutting, accurate cutting, no deformation, no warping, fluffing, threading, wrinkling, etc. The avoidable "laser cutting machine" has the shortcomings of rough cutting edge, focal edge and rough pilling. However, at present, ultrasonic cutting machine is more difficult than laser cutting machine in automation, so the current laser cutting efficiency is higher than ultrasonic cutting.