Surface contact gear transmission mechanism

The invention discloses a rolling friction gear and belongs to the technical field of mechanical transmission. The rolling friction gear is mainly composed of a rolling bearing, a gear shaft and a main wheel. The rolling bearing replaces teeth of a traditional gear, sliding friction between gear faces is changed to rolling friction, the friction coefficient becomes smaller, transmission efficiency is improved, and the service life of the gear is prolonged.

Rolling friction gear

PROBLEM TO BE SOLVED: To provide the gear generating profile which increases the contact area to a counter gear face in an engagement part and the transmission force to the counter gear face by reducing the face pressure as well as the power transmitting unit using the gear generating profile and keeps the pressure angle to the counter gear small and the transmission force over the counter gear increased from this point as well as the power transmitting unit using the gear generating profile. SOLUTION: The rack gear 24a in the negative dislocation rack 24 is generating processed by the loop shaped nodal part of the negative dislocation curve. The cylindrical pin 25a of a pin pinion 25 welds with pressure to the gear end 24b of the rack gear 24a when rotating the pin pinion 25. The gear face of the pin pinion 25 is concave, which is engaged to a counter rack gear 24a by face contact as it has the elastic deformation when engaging. The transmitting force increases while the contact area of the cylindrical pin 25a to the rack gear 24a increases while the rigidity becomes high by reducing the face pressure. COPYRIGHT: (C)2008,JPO&INPIT

Imase Kenji

Papers

Gear generating profile and power transmitting unit using gear generating profile