26-01-2017 дата публикации
Номер: US20170023110A1
Принадлежит:
A sliding friction-free gear has cams of specific profiles, rollers separating cooperating cams that roll over the cams of the gears, thus eliminating the sliding friction between the gears. The rollers are mounted rotatably e.g. in sliders or eccentrics, wherein the sliders, resp. eccentrics, are mounted slidingly, resp. rotatably, in a yoke attached rigidly to a shaft. The rollers are free to execute oscillating motion relative the yoke while rolling over the cam profiles of the cams of the gears. The cooperating members of the gear contact along a line like in conventional evolvent gears, and unlike in the Wildhaber-Novikov's gear (where the momentary contact between teeth of cooperating toothed wheels is pointwise); therefore the gear according to the present invention offers much larger transmission capacity and is much less prone to seizure than known gears. 3. Sliding friction-less gear according to claim 2 , wherein the second cam placed on the first shaft is a circular eccentric with eccentricity ratio e and radius r; wherein the curve γ is a segment of a straight line; wherein the base transmission ratio k=1/s claim 2 , where s is a natural number not equal to zero; wherein the first profile ({tilde over (x)}(φ) claim 2 , {tilde over (y)}(φ)) of the first cam placed in the body satisfies in the first Cartesian coordinate system (x claim 2 ,y claim 2 ,z) the following system of parametric equations:{'br': None, 'i': x', 'B', 'B', 'D', 'C', 'D, 'sub': '1', 'sup': 2', '2, '{tilde over ()}(φ)=(φ)+ρ((φ)−(φ)sin φ)/√{square root over ((((φ))+(((φ)))},\u2003\u2003(C)'}{'br': None, 'i': y', 'E', 'E', 'D', 'C', 'D', 'A', 'r', '−e', 's, 'sub': 1', 'e', '0, 'sup': 2', '2', '2', '2', '2, '{tilde over ()}(φ)=(φ)+ρ((φ)+(φ)cos φ)/√{square root over ((((φ))+(((φ)))}; where φ is a real parameter, and (φ)=√{square root over ((+ρ)sin(φ))};\u2003\u2003(D)'}{'br': None, 'i': B', 'e', 's', 'A, '(φ)=cos(φ)cos φ+(φ)cos φ;'}{'br': None, 'i': C', 'A', 'e', 's', 'D', 'se', 's', 's', ...
Подробнее
