| 摘要 |
A gear device improved in lowering the product of the load F acting on a pair of intermeshing teeth and the relative sliding velocity v at the area of contact of the gears, thereby minimizing the frictional heat. The gear device includes a first gear and a second gear each having a tooth profile formed by an involute curve. At least one of the first and second gears is provided with the tooth profile corrected by a combination of a correction curve W and the involute curve. On plane coordinates consisting of an x axis, an origin and a y axis which intersects with the x axis at the origin, the correction curve W is expressed by equations passing through points P1 (x1, y1) and P2 (x2, y2) and satisfying the conditions of: y=0, dy/dx=0 at the origin when x1<x2 and y1<y2. The x axis is the line of action indicative of a locus along which an intermeshing point moves while the first gear transmits a force to the second gear. The origin is a point at which the x axis intersects with an intermeshing pitch circle of the first and second gears. <IMAGE> |
