A longitudinal-torsional compound vibration processing system applied to processing hard and brittle materials

Abstract

The invention relates to a processing device of hard and brittle materials, in particular to a longitudinal and torsional combined vibration processing system for hard and brittle material processing. The longitudinal and torsional combined vibration processing system for hard and brittle material processing mainly comprises an ultrasonic generating device, a longitudinal and torsional combined vibration device, a hard and brittle workpiece and a processing testing device. The ultrasonic generating device mainly comprises an ultrasonic generator, a longitudinal vibration ultrasonic transducer and an ultrasonic wireless transmission control system. The longitudinal and torsional combined vibration device is connected with the ultrasonic generating device, and mainly comprises a locking mechanism, a front end cover, a rear end cover, piezoelectric ceramic pieces, a torque actuating mechanism, a longitudinal and torsional combined transformation structure, a hollow cutting tool and a cooling system. According to the longitudinal and torsional combined vibration processing system for hard and brittle material processing, due to the fact that the materials are processed through a longitudinal and torsional combined vibration processing method, the processing quality of the hard and brittle materials can be improved; and due to the fact that the adopted ultrasonic generating device is matched with the longitudinal and torsional combined vibration device, the enough tensile strength and the reasonable resonance frequency can be provided, the hard and brittle materials can be protected when the materials are processed, and the high-precision surface quality requirement is met after processing is accomplished.

Description

technical field [0001] The invention relates to a processing device for hard and brittle materials, in particular to a longitudinal-torsion compound vibration processing system applied to the processing of hard and brittle materials. Background technique [0002] For the field of industrial production and material research, the processing of hard and brittle materials is a common but highly demanding processing procedure. More attention has been paid to the traditional methods of obtaining vibration modes through longitudinal-torsional composite vibrations, including: longitudinal and torsional conversion alternate vibration modes, or the use of tangentially polarized piezoelectric ceramic elements to achieve vibration conversion, but the resonance generated by different vibration modes The frequency is different, resulting in different excitation of the ultrasonic power supply, so the frequency and the processing progress cannot be controlled; in order to overcome such prob...

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Problems solved by technology

[0002] For the field of industrial production and material research, the processing of hard and brittle materials is a common but highly demanding processing procedure. In order to improve the processing quality of hard and brittle materials, longitudinal-torsion composite ultrasonic processing technology is increasingly used in the processing of hard and brittle materials. More attention has been paid to the traditional method of obtaining vibration modes through longitudinal-torsional composite vibrations, including: longitudinal and torsional conversion alternate vibration modes, or the use of tangentially polarized piezoelectric ceramic elements to achieve vibration conversion, but the resonance generated by different vibration modes The frequency is different, resulting in different excitation of the ultrasonic power supply, so the frequency and the processing progress cannot be controlled; in order to overcome such problems, a composite processing system with longitudinal torsional resonance can be used, but the transmission end of the commonly used longitudinal torsional resonance is mostly The design of the spiral vibrating rod or the inclined groove vibrating rod, which realizes the processing method of longitudinal torsional resonance and reasonable amplitude ratio, but the torque force generated by this design is not enough to be used in the processing of ultra-high frequency hard and brittle materials. When the frequency of longitudinal-torsional composite vibration increases, the preload force also needs to be increased accordingly. If the torque force is unreasonable, the overall coordinated processing cannot be achieved, and the processing quality of hard and brittle materials cannot be reported.

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