Study On The Driving Theory,Manufacture And Measure Of Swing Movable Teeth Reducer

Swing movable teeth reducer is a new type of high property drive device, which is used to transmit rotary motion and power between two shafts with the same axis, is a new type of small teeth difference planetary gear drive, and has many advantages, such as strong load-carrying capacity, high transmission efficiency, large angular velocity ratio, small in size and compact structure etc. These characteristics make the swing movable teeth reducer have vast application prospects in industry. In this article, the math model of swing movable teeth drive is established, the design, manufacture and measure of swing movable teeth drive are deeply studied. The main work and results are as followings.According to gear engagement principle, the math model of swing movable teeth drive is established. The engagement curve, engagement equation, relative speed between eccentric gear and movable teeth, and between movable teeth and internal gear are presented, and the gear equation of internal gear is presented. The relative speed between movable tooth and internal gear, the coordinates of points of internal gear are calculated by MATLAB. Then a new method of calculating the gear curve of internal gear is put forward.For the first time, the internal gear is manufactured in NC machine. The points of internal gear are fitted into spline curve by spline function, then the internal gear is manufactured in NC wire-cut machine. The process of manufacturing theinternal gear in wire-cut machine is studied. Compared to the traditional method of manufacturing in special machine this process is a breakthrough.The construct of the parts of swing movable teeth reducer is studied, renovating design of eccentric gear, moveable teeth and internal gear is given.For the first time, the internal gear is measured on three-coordinate measuring machine, gear error of internal gear is calculated and analyzed by comparing the measuring data with the desired data. The result of analyzing reveals the correctness of math model and manufacturing method.