ハイブリッド増減速機に関する基礎的研究（軸方向予圧を用いた場合の解析と実験）

概要

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The transmission gear ratio of the power transmission device is determined with pair of numbers of each tooth. Since the minimum number of teeth was decided, when the center distance was fixed, change of the transmission gear ratio was difficult. In this research, it was tried to combine the gear and traction drive system utilizing commercially available angular ball bearings. The traction drive system utilizing angular ball bearing has function which reduces rotational speed and supports gear reaction force. The traction drive system features an input shaft and inner ring with a fixed outer ring and a retainer as the output shaft. The retainer of the angular ball bearing and output shaft were unified and it could reduce using the difference in the rotational speed of the inner ring and a retainer. Axial preload was added to the angular contact ball bearing with the compression spring. When both gear reaction force and axial preload were added to the traction drive system, angular ball bearing was selected so that the output torque might be to 20Nm. As a result of the experiment, by giving axial preload 1800N, theoretical transmission gear ratio was attained, and it has operated to 20Nm of output torque. The transmitting efficiency has confirmed that it was about 76.9% by the double reduction of the gear and the traction drive system.