Since the early 90s, our sister company SONIMAT has gained long-term and rich experience in the use of ultrasonic technology in assembly, welding and cutting applications.
Ultrasound is similar to the mechanical vibration produced by any musical instrument. These vibrations are called ultrasonic waves because their frequency is higher than that of the human ear (more than 16 kHz). These pressure waves are generated by generators.
The frequency of the alternating current generated by the generator is the same as the frequency of the converter (or transducer) composed of piezoelectric ceramics and converts it into mechanical vibration. The voltage is sent on the ceramic, which "stretches" or "shortens" according to the polarity of the voltage. Once the vibration is generated, it is amplified and transmitted to the parts to be welded or cut by the ultrasonic welding electrode.
The generator converts electrical frequency (50/60 Hz) into high-frequency electrical energy, which is equivalent to 20000 Hz in this scheme.
Piezoelectric transducers (or transducers) convert 20000 Hz electricity into mechanical vibrations of the same frequency. The energy then becomes mechanical.
The booster or amplitude regulator will increase or decrease the amplitude produced by the converter. The last element of the sonic chain, the ultrasonic generator, transmits ultrasonic energy to the part to be cut.
In the ultrasonic cutting process, the ultrasonic generator is also called a cutter. Receiving 20,000 vibrations per second, this ultrasonic cutting machine requires less pressure and can cut composite materials and honeycomb materials.
