Meshing Theory And Application Study Of Grinding Gear With The Toroidal Involute Interior Thread Worm Grind Wheel

Grinding gear with the toroidal involute interior thread worm grind wheel is a new kind of process in hard surface gear finish machining. The process has an advanced principle. The involute hourglass worm drive can realize the design machining of gear form and direction, and the internal meshing honing gear has high efficiency. This process has all merits mentioned above, and also has the advantages of quality stability , high productivity for rude and finish machining. This technology has a broad prospect in manufacture.In the paper, the complete and systematic theoretic study about this process is carried out with the theory of space mesh. Firstly, the author has deeply studied the theory of involute double enveloping. Equations of mesh, shorting contact line, undercutting limit line, meshing limit lines and the existence conditions, angle between the direction of relative speed and the direction of contact line, induced normal curvature about every point on the contact line are established. Moreover, The paper also theoretically analyzed the error of the grinded gear surface .On the basis of the theory, the computer program is worked out to automatically produce the contact line and the boundary curves of mesh. Analysis of meshing circs under different parameters can be done so that we can gain the best process condition. Finally, the author studies the grinding gear setting and designs the drive system of machine tool.