PLANETARY FRICTION GEARING Russian patent published in 2004 - IPC

FIELD: mechanical engineering. SUBSTANCE: invention can be used as friction reduction gear or multiplicator. Proposed planetary friction gearing contains central wheel 1, ring wheel 2, planet pinions 8 and power mechanism. Ring wheel 2 is made in form of flexible ring corrugated member with rigidity constant in angular coordinate. Power mechanism has two pressure bushings 9 and 10 with working surfaces H and U, bolts 11 with nuts 12. Pressure bushings compress ring wheel 2 which deforms to take up clearances when being aligned in two zones relative to hole A of housing 1 and provides pressing between planet pinions, central and ring wheels. EFFECT: increased service life, accurate and uniform operation of planetary friction gearing. 2 dwg