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The difference between laser cutting and ultrasonic cutting

Date:Jan 28, 2021


The difference between laser cutting and ultrasonic cutting


Now in the cutting industry, both laser cutting and ultrasonic cutting are relatively high-end high-tech cutting methods. Just like laser cutting and waterjet cutting, there are big differences in principle, cost, cutting method and application, so let's talk about the difference between laser and ultrasonic cutting today.


The principle is different

(1) Principle of laser cutting

The principle of laser cuttingLaser cutting is to use 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 Realize the cutting of the workpiece. Laser cutting is one of the thermal cutting methods.


(2) 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 spindle and the base of the grinding wheel blade, and converted into a radial expansion movement. Through this vibration conversion method, the ideal vibration direction required for ultrasonic processing can be obtained.


The mechanical vibration energy generated by the ultrasonic generator exceeds 20,000 blade vibrations per second, which heats and melts the material to be cut locally, so that the molecular chain is quickly broken and separated to achieve the purpose of cutting the material. Therefore, ultrasonic cutting does not require a particularly sharp blade, nor does it require a lot of pressure, and will not cause chipping or damage to the material being cut. At the same time, due to the ultrasonic vibration cutting knife, the friction is small, and it is not easy to stick to the blade by reducing the material. Viscous and elastic materials, frozen, such as food, rubber, etc., or inconvenient to add pressure reduction objects, are especially effective.


Different characteristics

(1) Laser cutting characteristics

As a brand-new processing method, laser processing has gradually been widely used in the leather, textile and garment industries with its advantages of precision, speed, simple operation, and high degree of automation. Compared with traditional cutting methods, laser laser cutting machines are not only low in price and low in consumption. And because laser processing does not have mechanical pressure on the workpiece, the effect, accuracy and cutting speed of the cut products are very good. It also has safe operation and maintenance. Simple and other features. Can work continuously for 24 hours. The dust-free cloth non-woven fabric cut by laser laser machine does not turn yellow, automatically closes the edges, does not fray, does not deform, does not become hard, the size is consistent and accurate; it can cut any complex shape; high efficiency, low cost, Computer-designed graphics can cut laces of any shape and size. Fast development speed: Due to the combination of laser and computer technology, users only need to design on the computer to realize laser engraving output and change the engraving at any time. You can design and produce products while designing.


(2) Ultrasonic cutting characteristics

Ultrasonic cutting has the advantages of smooth 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 pilling, but the ultrasonic cutting machine is currently more difficult than the laser cutting machine in automation, so the current laser cutting efficiency is higher than that of the ultrasonic cutting.



Different applications

Laser cutting application field

Machine tools, engineering machinery, electrical switch manufacturing, elevator manufacturing, food machinery, textile machinery, locomotive manufacturing, agricultural and forestry machinery, food machinery, special automobiles, petroleum machinery manufacturing, environmental protection equipment, household appliances manufacturing, large electrical silicon steel sheets and other machinery manufacturing Processing industry.


Ultrasonic application field

Ultrasonic cutting machine and cutting operation

Ultrasonic cutting also has a great advantage, that is, it has fusion in the cutting part while cutting. The cutting part is perfectly sealed, which can prevent the loosening of the cut material (such as textile material flash). The use of ultrasonic cutting machine can also be expanded, such as digging holes, shoveling, scraping paint, carving, slitting and so on.


1. Cutting and punching of plastic and thermoplastic doors.

2. Cut for non-woven fabrics or woven fabrics, cut textiles, lace for garments, and cut fabrics. The edges are cut and sealed at the same time.

3. Artificial resin, rubber cutting, raw rubber, soft rubber cutting.

4. Tape and various film cutting.

5. Paper cutting, printing industry cutting, printed circuit boards, trademarks.

6. Cut food and plants, such as frozen meat, candy, and chocolate.

7. For PVC, rubber, leather, plastic, cardboard, acrylic, polypropylene, etc.

8. Clothing fabric cutting

9. Packaging material cutting

10. Cut curtains, blackout curtain fabrics

11. Cutting in the automotive industry


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