The working principle of Ball Globoid Worm Gear Drive: drive and friction on the teeth within the ball rolling, in the channel in the balls promote each other, from the worm body channels via a return device rolled into the worm helical groove, roll to the other end of the worm, by another return and enter into the worm body channels. Roll back start position. Ball continuous rolling to form a closed ball chain. Because the ball continuously along the spiral groove rolling, so it is a method to envelope section spiral semicircle convex surface. From a macro perspective, when the worm drive, we can say that the worm screw convex surface and worm gear concave tooth surface conjugation, as the constant speed ratio reducer transmission. On the contrary, when the worm is active when the fixed ratio transmission convex conjugate tooth surface. From the local perspective, the ball and the worm, worm gear concave tooth surface for point contact.
One of the most prominent advantages of worm gearing is the high transmission efficiency, especially in the case of low speed and heavy load. High transmission efficiency of Ball Globoid Worm gear drive, the reason is: in worm / worm gear meshing pair into a group can be automatic cycle of intermediary body ball chain, dominated by sliding the meshing engagement in a rolling friction in loss reduced by a big margin, solve ordinary r worm transmission ratio, but transmission efficiency low problem. This is the key technology of the worm gear drive.
Value of Ball Globoid Worm gear drive transmission efficiency and the manufacturing precision of the worm, a worm wheel, a return device and back to Pearl River channel etc. the main parts and their material and heat treatment process is closely related to, so to find the main parts of Ball Globoid Worm gear drive one worm, a worm wheel, a back back and back to Pearl River channel etc. the advanced processing method is the key technology in the development of this kind of transmission. At present, the processing principle and method of the rolling ball torus worm and worm wheel are turning, milling and grinding. >