High-efficiency Resonance Energy Transmission And State Assurance Technology For Ultrasonic Vibration Processing

Hard and brittle materials are used more and more widely in the aerospace field due to their advantages such as wear resistance and heat resistance.However,the long time and high cost brought by the traditional processing of hard and brittle materials restrict the development of hard and brittle materials.Compared to traditional processing,Ultrasonic vibration processing technology is a composite processing technology,and has good development prospects.The main research contents of this paper for ultrasonic vibration machining technology are as follows:Firstly,From the perspective of the ultrasonic energy which transmit directly,the structure of the ultrasonic vibration machining system was analyzed.By analyzing the transmission of ultrasonic energy in the ultrasonic vibration system under no-load condition,the factors affecting the energy transmission were obtained,and the ultrasonic vibration structure was optimized.At the same time,the influence of the load characteristics on the ultrasonic vibration machining under the load condition was analyzed,we conclude that ultrasonically processed materials cannot be visually or sensibly.Secondly,In view of the inconvenience of traditional power transmission,the related technologies of contactless power system were studied,including the mathematical model of contactless power transmission and the technology of matching network.Based on the traditional non-contact power transmission system,the new non-contact power transmission system was simulated and we conclude that the size of the core gap is the biggest factor affecting the efficiency of non-contact power transfer.Thirdly,The structural design and frequency equation of the piezoelectric transducers were discussed.Based on the four-terminal network theory,the size parameters of the composite horn were deduced and the finite element simulation was tested and verified.Aiming at the shortcomings of the traditional tool bar connection,the heat shrinkage method was proposed.Fourthly,The theory and method proposed in this paper were applied to the development of ultrasonic vibration drilling device.The experimental results show that the ultrasonic vibration drilling process is in good resonance state,the axial force is 1/8-1/6 that of ordinary drilling,and the processing rate is more than three times of it,reaching the expected requirement.