Research On The Tooth Surface Of Spiral Bevel Gears By Electrochemical Finishing Process

Design of spiral bevel gears (SBG) is based on elastic engagement which hassmooth transmission, high carrying capacity. These advantages meet the requirements ofhigh-speed, high-load, high-performance for the modern gears. Therefore, the SBGbecomes important parts in the mechanical transmission. SBG requires heat treatment forimproving performance, but there is a certain amount of deformation of the heated tooth,so that the obtained machining accuracy is reduced. And it is difficult to eliminate thedeformation as result of special shape of teeth of SBG.An advanced, non-altofrequent vibration and non-contact electrochemical finishing(ECF) is concerned with the continuous development of the final processing technology.Lot of practice shows, ECF makes the workpiece get a good microstructure and improvesignificantly the processing quality of a workpiece, compare to the traditional mechanicalfinishing.Analyzing dissolution characteristics of an anode surface through contrasting thealteration of shape accuracy and microtopography of it, then studies the related issues ofECF. Change of the anode morphology show that there is an inverse relation betweenanodic dissolution speed and the pole gap. The anode surface micro-spikes become into acircular shape in the processing. And the more obvious the circular shape and levelingeffect, the smaller the gap experiment designed.This project focused on fundamental research of ECF of the tooth surface of SBG asa result of gradually approaching the desired tooth shape which consist of the basic point,line, plane and circular surface. Building experimental platform through transformationof the machine, design of cathode structure, cathode means and anode means to analyzethe anode surface deformation of shape accuracy and microstructure. The experimentpaves the way for analysis of the tooth surface quality of SBG. The flow field design idea of ECF an anode is established. The experimental resultsshow that the flatness of the processed parts plane from IT8to IT4, the cylindrical of thesolid of revolution from IT6to IT2by their designed experimental facilities. And theanode workpiece which have bad compactness, obvious machining marks, surface peakin the microscopic morphology be transformed into the part which have goodcompactness, no machining marks, and surface arc shape in the microscopic morphology.The experimental data show that the design idea of the subject is correct. It is valuable tostudy the subject.