PLANETARY-FRICTION GEAR BOX

摘要

The invention relates to machine-building and can be used to obtain set of rates of revolution of output shaft of machine, for instant spindle of drilling machine. A planetary-friction gear box has a body with inlet and outlet shafts installed coaxially and several planetary-friction transmissions as roll bearings installed in the body in sequence in such way that retainers of previous bearings are connected to inner rings of the next one by bushings with guides that are outlet links of transmissions. Between the bushings with guides and output shaft a movable double-acting free-wheel clutch is installed.