GEAR TOOTH PROFILE FOR ORBITAL GEARING, ORBITAL GEARINGS AND WINCHES USING ORBITAL GEARINGS Russian patent published in 2004 - IPC

FIELD: mechanical engineering; gearings. SUBSTANCE: invention relates to profile of gear tooth for orbital gearings. Proposed gearing has external wheel 10 with gear number of internal teeth 14 and internal gear wheel 30 with great number of external teeth 34. Bending point 52 of contact surface of internal gear wheel 30 is located on its pitch circle 36. External gear wheel 10 has pitch circle 25. To transmit effort from one gear wheel to the other, said wheels are made for radial engagement with point contact with bending point 52 of external teeth 34. Internal gear wheel 30 engages and rolls over only through single point B on contact surface 18 of external gear wheel 10, essentially, in point of intersection of pitch circle 25 of external gear wheel 10 with its contact surface 18. EFFECT: improved operating characteristics of orbital gearings. 14 cl, 19 dwg