WOBBLING INTERNAL ENGAGEMENT PLANETARY GEAR APPARATUS ENGAGING TROCHOIDAL GEAR WITH ARC GEAR WITH SLIDING CONTACT OR ROLLING CONTACT AND METHOD FOR IMPROVING DURABILITY AND EXTENDING LIFE SPAN

摘要

PURPOSE: A wobbling internal sliding engagement planetary gear apparatus and a durability improvement method thereof are provided to extend the life span, and to improve the efficiency by transmitting power with a trochoidal gear and an arc gear and lubricating grease between the internal gear and the external gear. CONSTITUTION: An eccentric hollow shaft(3) is fixed to an input rotating shaft(1) by a key and a key groove(4), and composed of two eccentric bodies(31,32). Two external gears(51,52) are inserted to the eccentric bodies through a roller, and composed of trochoidal external gear teeth(7). An internal gear(8) is composed of an arc outer pin(9) engaged with the external gear tooth, and an outer roller is installed in the outer pin. An inner roller(12) is fitted to an inner pin(11), and the inner pin is contacted to an inner pin support flange(13). Grease(14) is lubricated between the outer pin of the internal gear and the external gear tooth of the external gear and composed of oil having the kinematic viscosity over 10 mm¬2/s at 100 deg.C and lithium complex synthesized from adipic acid.