The Design And Research Of Ultrasonic Horn With Longitudinal-torsion And Flexural

With the development of modern science and technology, power ultrasonic technology is widely used in various aspects. In ultrasonic machining technology, the longitudinal-torsional ultrasonic machining technology and flexural ultrasonic machining technology has the advantages of high efficiency and high precision in machining hard and brittle materials, so people have to look to the study of longitudinal-torsional and flexural ultrasonic vibration system. As an important part of the ultrasonic vibration system of the longitudinal-torsional and flexural vibrations, the research of the ultrasonic horn of the longitudinal-torsion and flexural is paid more attention by people. However,because of the different speed of the longitudinal vibration and torsional vibration in the same horn, the design and calculation of the bending horn is complicated, therefore the design of the longitudinal-torsional and flexural ultrasonic horn is few. Under this background, the importance is obvious about researching on the ultrasonic horn of the longitudinal-torsion and the flexural ultrasonic horn.The main parts of this paper include the theoretical design, simulation and optimization design of the longitudinal-torsional and flexural ultrasonic horn. Firstly, according to the longitudinal vibration,torsional vibration and flexuaral theory of wave equation, respectively derived index type, conical type, ladder type and index composite type ultrasonic horn reached with the resonance frequency corresponding to the vibration frequency equation, and obtained the conditions of the longitudinal-torsional ultrasonic horn reached with the resonance frequency. Secondly, the frequency vibration equation of the composite ultrasonic horn with spiral groove and the ultrasonic horn is derived. The longitudinal torsional horn can reach the same frequency resonance with the ANSYS software verificated theory, and the theoretical design and simulation results are consistent with the theoretical design and simulation results. Through the analysis of ANSYS under different conditions, the factors that affect the frequency and amplitude of the same frequency resonance include the length of the horn, the area coefficient and the shape of the horn. Based on, application of APDL (ANSYS parametric design language of cubic spline curve of longitudinal and torsional horn shape and size of optimization design, can not only meet the torsional and longitudinal resonance frequency, and having a longitudinal and torsional common node displacement of longitudinal and torsional amplitude rod.Finally, the corresponding shape and size parameters of the flexuaral horn are calculated by the theory. The modal analysis and harmonic analysis of ANSYS show that the output amplitude of the bending ultrasonic vibration system can meet the processing requirements. The longitudinal-torsional vibration system is analyzed, and the output of the transducer is longitudinal vibration, which can reach the longitudinal torsional resonance through the spiral groove on the horn, and the system resonance frequency is within the allowable range of the error.