Study On The Technology And Honing Characteristics During Internal Meshing Gear Power Honing

Gears are widely used in automobiles,aerospace,ships,machine tools,construction machinery and instrumentation.High precision gears are the necessary support to meet the advanced requirements of high speed transmission,load shock,and low noise,especially in terms of vibration noise and fatigue strength,which restricts the development of advanced electromechanical products in our country,such as advanced automotive transmissions and helicopter transmissions.The internal meshing gear honing can effectively improve the distortion of the gear geometry,and reduce the error of the gear.Gear flank can be modified any form with this method.Gear power honing have significant effects on gear surface finish,gear error correction and fatigue resistance.This method can improve oil storage performance of gear surface and reduce gear transmission noise significantly and extend gear life.The texture of gear surface after honing can eliminates the possibility of harmonics of the basic rotational frequency being developed thus avoiding resonance between sound pressure and decreasing the harshness of the drive in the gear trains.At present,there are few researches on internal gear power honing equipment and technology.Based on the National Natural Science Foundation of China(51575154)“the key technology of gear honing mechanism of internal gear power honing”,and National Science and Technology Major Project(2013ZX04002051 “Y4830CNC gear power honing machine”,the internal gear honing principle,processing technology,honing contact characteristics and honing wheel dressing technology are studied.The main contents of the thesis include the four aspects:1.A mathematical model of gear is established.The gear flank relative speed,honing meshing surface,contact line and honing wheel model are established based on the principle of cross axis gear transmission model and space surface meshing principle.2.Combined with the Y4830 honing machine,the honing process and contact force analysis are carried out on two different processing methods of gear power honing.On this basis,the mathematical model of machine linkage under different process methods are deduced.3.The gear surface texture formation mechanism and gear honing meshing characteristics are studied.The influence of different axis cross angle parameters on the tooth surface texture and meshing characteristics are analyzed.On this basis,a honing wheel dressing strategy and gear honing technology with variable axis cross angle method are proposed.4.According to the proposed strategy,the simulation are carried out from the aspects of meshing surface,contact line and honing wheel tooth profile to lay the theoretical foundation for the experiment.