Working principle of ultrasonic cutting machine

1. The working principle of ultrasonic cutting machine is completely different from traditional cutting machine. It uses the energy of ultrasonic to melt the local heating of the material to be cut, so as to achieve the purpose of cutting the material. Therefore, ultrasonic cutting does not require a sharp edge, nor does it require a lot of pressure, so that it will not cause the edge of the cut material to collapse and damage. At the same time, due to the ultrasonic vibration of the cutting knife, the friction resistance is very small, and the cutting material is not easy to stick to the blade. It is especially suitable for cutting viscous and elastic materials, frozen materials (such as food, rubber, etc.) or objects that are inconvenient to pressurize. Ultrasonic cutting also has a great advantage, that is, while cutting, the cutting part has a fusion effect. The edges of the cutting part are intact to prevent loose tissues of the cutting material (such as flashing of textile materials). The use of ultrasonic cutting machine can also be expanded, such as digging holes, shoveling, scraping paint, carving, cutting, etc.

2. The basic structure and characteristics of the ultrasonic cutting machine are equipment that uses wave energy for cutting processing. Its characteristic is that no cutting edge is required. In other words, it does not require traditional edges. Traditional cutting is to press the cutting material with a sharp edge. This pressure is concentrated on the edge, and the pressure is great. If the shear strength of the material to be cut is exceeded, the molecular bonds of the material will be pulled apart and severed. Since the material is pulled hard by strong pressure, the cutting edge of the tool should be very sharp, and the material itself should withstand greater pressure. The cutting effect of soft elastic materials is not good, and the cutting of viscous materials is more difficult. The basic structure is ultrasonic transducer, horn, cutter (cutter head), and driving power supply. The ultrasonic driving power supply converts the power into a high-frequency and high-voltage alternating current and transmits it to the ultrasonic transducer. In fact, the ultrasonic transducer is equivalent to an energy converter, which can convert the input electrical energy into mechanical energy, namely ultrasonic waves. Its expression is that the transducer moves back and forth in the longitudinal direction. The frequency of the stretching motion is equal to the frequency of the high frequency AC current provided by the driving power supply. The role of the horn is to fix the entire ultrasonic vibration system, and the other is to increase the output amplitude of the transducer. On the one hand, the tool (cutter head) further amplifies the amplitude and focuses the ultrasound. On the other hand, the ultrasonic wave is output, and the ultrasonic energy is concentrated to the cutting part of the material to be cut using the cutting edge similar to the cutting knife. Under the action of huge ultrasonic energy, the part instantly softens and melts, and its strength is greatly reduced. At this time, as long as a small cutting force is applied, the purpose of cutting materials can be achieved. Similar to traditional cutting, the basic components required are the tool and anvil. The ultrasonic cutting machine also has two basic structures. According to the different parts of ultrasonic application, it can be divided into ultrasonic cutting machine and ultrasonic anvil cutting machine. The ultrasonic cutting machine directly loads the ultrasonic energy onto the cutting machine, making the cutting machine an ultrasonic cutting machine. When cutting the material, the material is softened and melted by ultrasonic energy. The tool only plays the role of welding seam positioning, ultrasonic energy output and material separation. This cutting method is suitable for cutting thick, thick and long materials, and it is not convenient to install an anvil.

Post time: Jan-13-2021