“Worm Gearbox” as a noun, it is wide use in reducer industry development, worm series gearbox is a major driving force in gearbox development process . Worm gear reducer is a transmission equipment for stable ,change speed, it using different gear ratio, in order to achieve stable transmission, change the speed, adjust the motor speed and machine tools and other equipment get a suitable speed. In current transmission equipment, gearbox application is very extensive ,such as Vehicle on truck ,Ferries, airplanes; transmission equipment for machinery production etc. besides, watches, washing machines, etc in daily life appliances,these mechanical devices are assisted by gearbox ultimately. Worm gearbox main models: Worm Gearbox Main Models: Gearbox Photos WP series worm gearbox WH series worm reducer CW series worm gearbox RV series worm gear reducer C series enveloping worm reducer, TP series plane enveloping worm reducer, ZC1 dual-stage worm and gear – worm reducer 2, Worm Gearbox Model Selection First of all, considering to the role of gearbox itself. Then transmission ratio, device mode, assembly form . Finally, note that the corresponding motor power, and motor working environment. 3,Worm Gearbox Function Gearbox can improve output torque when decrease output speed ,the rate of output torque get from motor speed * ratio. Decrease the inertia of the load while reduce the speed. 4, During processing spherical worm , easy to appear the questions as following : Worm shaft teeth is thick on one side, thin teeth on the other side meanwhile. Worm tooth shape is thick on both sides , thin in center. Worm tooth shape on both sides of the thin, thick in the Middle. Use milling machine processing the worm, it has the following advantages: A) cost-saving tool. Without special equipment. The disadvantage is obvious (1) worm gear tooth indexing error is large. (2) precision worm gear pressure angle can not be guaranteed. (3) the worm tooth helix angle error is too large.