Magnesium Alloys Power Ultrasonic Vibration Turning Device Design And Simulation Analysis

This paper funded by the 2009 years Taiyuan Science and Technology Agency graduate innovative and pioneering special project"power ultrasonic turning magnesium alloy technology research"(09122040), for magnesium alloy material machining process prone to spontaneous combustion and wokepiece thermal deformation problem, probe power ultrasonic vibration turning magnesium alloy processing technology, design ultrasonic vibration turning device for magnesium alloy, have practical significance and practical value. The major work and results are:1. Carry on a date research of the development and applications of magnesium materials, power ultrasonic vibration machining, lever of research and development of the status quo at home and abroad of ultrasonic vibration turning;2. Conducted a comprehensive analysis of the magnesium alloy ultrasonic vibration turning mechanism, for general cutting and vibration cutting carried out a comparative analysis, established a dynamic model of magnesium alloy ultrasonic vibration turning, analysis the magnesium alloy ultrasonic vibration characteristics of the cutting process, cutting edge movement mechanism, the dynamics of magnesium alloy parts when vibration cutting and lubrication mechanism of coolant, from theory reveals the reason that power ultrasonic vibration machining can effectively enhance magnesium alloy accuracy and surface quality;3. According to the magnesium alloy processing characteristics of power ultrasonic vibration turning, combining the characteristics of magnesium alloy material, design a set of the longitudinal ultrasonic vibration turning machining equipment for magnesium alloy, includes select the ultrasonic generator, design transducer, horn, and the specific size of machining tool, according the main technical parameters of C620-1 lathe to design the tool clamping part and device installation part, etc, as far as possible make the magnesium alloy power ultrasonic vibration turning device structure simple and clamping facilitate;4. Carry on a finite element numerical simulation to magnesium alloy ultrasonic vibration turning, revealed the magnesium alloy ultrasonic vibration turning characteristics and laws. Computer simulation analysis the sound vibration system of this device (transducer,horn,ultrasonic tool) and the whole device, using finite element analysis method, reverse correction the device of size parameter, replace excitation experiment get device and parts'natural frequency. Through finite element simulation to the magnesium alloy power ultrasonic vibration turning device and the actual installation, prove that the device design results in line with the expected demand.