| 摘要 |
PURPOSE:To make it possible to make the distance between axles to coincide with the distance between intermeshing centers and to adjust the quantity of backlash by constructing the gear arrangement so that the variation rate of the quantity of displacement between teeth of a gear of a frustum of a cone becomes constant, and deviating gears in axial direction. CONSTITUTION:Involute plain gears 1 and 2 formed into the shape of a frustrum of a cone are positive shift gears in each of which the quantities of shifts differ between the small-diameter side end and the large diameter side end, and the variation rate m.DELTAs/b of the quantities of shifts between the teeth widths becomes constant. By setting the variation rate m.DELTAx/b at a constant value, the distance (a) between intermeshing centers of both gears 1 and 2 becomes constant at an arbitray position between the teeth widths (b). The distance (a) of the intermeshing centers is a function of only an intermeshing pressure angle alpha0, If the shifting positions of both gears 1 and 2 are set so that the sum (X1X X2) of the shift coefficients of both gears 1 and 2 becomes constant, the intermeshing pressure angle alpha0 becomes constant and the distance (a) of the intermeshing centers becomes constant. |
