PLANETARY REDUCTION GEAR WITH INTIMATE CONTACT Russian patent published in 2014 - IPC F16H57/12 F16H55/18 

FIELD: machine building.

SUBSTANCE: invention relates to machine building, and namely to drives of machines having tracking systems, particularly CNC machines, industrial robots, etc. A planetary reduction gear with intimate contact includes two central wheels (1, 3) and satellites that are in contact with them, each of which forms a unit of two gear wheels (2). Gear wheels (2) are installed on common axis (5) by means of rolling bearings (10) and free-wheel cam clutches (8, 9) with possibility of being turned relative to each other. Common axis (5) has the possibility of rotation in bearings (13) fixed in composite carrier (4) that rotates in bearings (12) arranged in reduction gear (15) housing. Free-wheel cam clutches (8, 9) are installed so that gear wheels (2) can rotate on axis (5) in opposite directions. Gear wheels (2) are connected to each other by means of helical twisting spring (11). Elimination of gaps is achieved by twisting of spring (11) by means of one of gear wheels (2) and further installed into a seat of the gear wheel of the corresponding free-wheel cam clutch. Intimate contact of the assembled reduction gear at transfer of the specified loads in both directions is provided by cam clutches (8 and 9).

EFFECT: invention allows providing intimate contact of the reduction gear in the whole range of required loads both in straight and return rotation directions of the reduction hear shafts.

4 dwg