Research On Design Of Ultrasonic Vibration Milling Handle For Optical Glass

With the rapid development of modern science and technology,optical glass materials are used more and more widely,such as aerospace,electronic information,etc.However,as a typical difficult-to-machine material,it has features such as high hardness,high strength,and high brittleness.Therefore,it is difficult to obtain a high-quality and high-precision surface by conventional cutting methods.Grinding-grinding-polishing processes are commonly used today,but this model has a long period of time,high processing costs,and it is difficult to guarantee the quality of the machined surface.In recent years,ultrasonic vibration milling technology has been applied to the processing of optical glass,and improves the surface quality effectively.In this paper,the processing object is the optical glass,and the purpose of this paper is that we design and manufacture the milling device of rotary ultrasonic machining,and carry out some experimental researches by using the developed device.The main research contents are as follows:Firstly,combine with the actual situation,the overall structure of the ultrasonic vibration milling tool holder is determined,and design a non-contact signal transmission device,and calculate the magnetic core's structural dimensions,the diameter of the enameled wire,and the number of coil turns.The tool type is determined and a modal analysis is performed.Secondly,based on the design theory of ultrasonic vibration system,the structural designs of the transducer and horn that composes the ultrasonic vibration milling system are carried out,and the connections between the various components are determined:horn and transducer are designed as one,and the prestressed screw connects them,milling cutter connection method selection of a common ER collet chuck.The modal and harmonic response of the ultrasonic vibration system are analyzed by using Ansys finite element simulation software.Thirdly,the frequency and amplitude of the designed ultrasonic longitudinal vibration system are measured with an impedance analyzer and a fiber displacement sensor.The results are compared with the analysis results and the causes of the errors are analyzed,and the amplitude of the end of the milling cutter can meet the requirements of ultrasonic glass optical processing.The frequency of the ultrasonic vibration system with a tool bar is tested,and the influence of the tool size on the resonant frequency of the vibration system is analyzed theoretically.