Design And Experimental Research Of The Miniature High-frequency Electro-hydraulic Exciter

Vibration cutting technology in the field of materials difficulty to cut has a great advantage, different types of cutting devices develop very fast. There is an increasing demand for the corresponding excitation device in various kinds of cutting method. Currently, The electromagnetic vibration and ultrasonic vibration can only meet the requirements of small thrust, in order to realize the heavy vibration of the workpiece or tool requires greater thrust vibration device. The new electro-hydraulic exciting way can output a huge thrust, and also has a higher excitation frequency. This paper designed a miniature high-frequency electro-hydraulic vibration exciter for vibration cutting, which can meet the demand for a certain type of vibration cutting vibration device.This paper designed a new type of miniature high-frequency electro-hydraulic exciter as vibration device, then designed the key control elements of this vibration device—miniature high-frequency excitation valve, and also developed a miniature high-frequency electro-hydraulic exciter prototype. Experimental research clear the vibration characteristics of the exciter, and the exciter achieve a frequency of 1000 Hz.The major work and achievements of this paper are as follows:1. Introduced the principle of several forms of vibration cutting and their own strengths and weaknesses; also discussed the research status of the electro-hydraulic control components and the electro-hydraulic shaker and electro-hydraulic control technology in detail;2. Design of miniature high-frequency electro-hydraulic exciter. Detail the working principle and structural characteristics of the exciter.Through Solidworks software to build its three-dimensional model; and check the intensity of these key stressed structure of the exciter.3. Mathematical model building of the miniature high-frequency electro-hydraulic exciter. Combining classical theory of the slide valve built mathematical model of the exciter. Through hydraulic theory and classical formula deduced the transfer function of the exciter system.4. Simulation of miniature high-frequency electro-hydraulic vibration structure. Using Ansys Workbench to achieve and analysis the static and modal simulation of the elastic cylinder.5. Experimental of the miniature high-frequency electro-hydraulic exciter. measured and analyzed shaker chamber pressure data, valve outlet pressure data, the elastic end vibration displacement and acceleration data at different pressures and vibration frequency when the system is on no-load and load, finally, experimental study the resonance characteristics of the exciter, then find out the resonant frequency.