Umlauf-Reibradgetriebe

摘要

A precision gear system as described in claim 1 is suitable for stepping down fast engines. The working principle as a straight differential allows a very high reduction in a range higher than about 2500:1 in a single stage. The design as friction gear ensures a smooth run, which can be further improved for the most stringent requirements by reducing redundancy, as described in claim 4. As both central gears are designed as ring gears, the mass moment of inertia is reduced by a compact pinion cage. The normal forces caused by the wedging effect between the conical ring gears and the camber ground friction gears are generated by the pressure of a plate spring set. Together with a transmission rod which is laterally pressed against the driven ring gear, this gear system may be used as a forward feeding drive for precision machines.