Disc Modeling And Simulation Analysis Of Weak Vibration Feeder

As precision manufacturing, the development of micro-electronics, pharmaceutical production and other industries, the fine feed, precision for sending, superfine processing and put forward the higher request, such as has been widely used abroad micro-nano vibrating conveyer device to realize transmission and positioning.Piezoelectric micro vibration conveyer driven away at home and abroad has become a research hotspot.This paper first elaborates the research purpose and meaning of piezoelectric vibrator, vibration feeding device technology, the paper summarized the development course and current situation of the development of both at home and abroad, the technology is currently in Japan and Europe and the United States and other countries to study more, its products have been applied to engineering practice.Domestic research is mainly focused on the structure and parameter optimization, less about the theory of the core components of piezoelectric vibrator.In disc type piezoelectric vibrator as the research object, analyzes the composition and the structure, performance parameters, determine appropriate piezoelectric ceramics, the metal base plate and structure form.Using orthogonal experiment method to determine the best size double piezoelectric wafer vibrator.Through the analysis of piezoelectric effect, piezoelectric equation and the vibration of the piezoelectric vibrator model, determine the oscillator type, support way and driving waveform.Establish a disc type vibration model of piezoelectric vibrator, dynamics analysis, application of Rayleigh Ritz approximation method, the axisymmetric vibration of piezoelectric vibrator dual chip process to evaluate, of piezoelectric vibrator dual chip is deduced bending vibration natural frequency and corresponding calculating expressions of vibration mode. And the maximum displacement of the exciting force to solve.Establish a disc type finite element model of piezoelectric vibrator dual chip, combining the actual structure of piezoelectric vibrator dual chip, carry on the static analysis and experimental tests, two curve contrast experiment and the simulation results shows that the basic trend is consistent, but there is the error of about 5%, main reason for the error due to the finite element model is a simplified model and parameters are the ideal state.So prove that the structure of 3 d model is feasible.Using SolidWorks software, modeling of disc type piezoelectric vibration feeder.And analyzes the working process of the piezoelectric vibration feeder, establish its dynamic model of piezoelectric vibration feeder is deduced in the conveying of the vibration differential equation.Establishing finite element model of disc type piezoelectric vibration feeder, the modal analysis with ANSYS software on the system, feeding system of the first 6 order vibration modal cloud, one of the order modal vibration mode in line with the actual working condition, its inherent frequency is 225.12 Hz.On piezoelectric vibration feeder machine simulation analysis and experimental research, respectively for conveying velocity and vibration frequency, the relationship between the excitation voltage curve, curve by these relations can be seen, when the power supply voltage must be, the power frequency to the natural frequency, vibration feeder transporting reach maximum speed;And a certain vibration frequency, the speed of the conveyed material increases with the rising of the power supply voltage.