円弧歯形鼓形ウォームギヤに関する研究 : 軸変位があるときの歯当たりの変化について

概要

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Owing to the displacement of the gear axes, the worm and wheel seldom operate in their theoretical relative positions. Hence, on practically used hourglass-worm gearings, tooth contacts shift to the boundaries of the tooth surfaced, resulting in edge contact and extreme conditions of load. Assuming that the tooth contact undergoes virtually no change in its real operating position, we expect it to transmit the power highly and smoothly. In this study, the worm tooth profiles are classified roughly into two types (straight type and arcuate type), and the tooth bearing is numerically analyzed in relation to the estimated displacement of the axes. Consequently, the following results were obtained : (1) Area of contact severely decreases except for the concavely arcuate type. (2) On the concavely arcuate type, the diminution rate of the contact area depends on the radius of the circule; the most suitable value of curvature was found.
一般社団法人日本機械学会の論文
1990-05-25