Abstract
With the speed reducing device, downsizing and cost reduction has been required strongly. In this report, we added the tapered roller bearing for supporting the gear output shaft to deceleration function as a traction drive. We ensure the necessary reduction ratio by this method, and propose a method to downsizing. In addition, by using a tapered roller bearing, compared to other hybrid reduction device, torque capacity was increased. In this study, we calculated the torque transmitted by the decelerating bearing which receives the gear reaction force, and designed the dedicated output shaft integrated retainer. Furthermore we performed the test operation and examined the reduction ratio, the mechanical efficiency of power transmission and the slip ratio. Here, the maximum target transmission torque was 20Nm and the maximum rotation speed was 200rpm. In this study, we used the output shaft integrated retainer that materials of contact surface were PBC, PEEK and Silver-plated SCM steel, and compared the three. When using the PBC, it confirmed that it can decelerate as designed, and achieved 20Nm of the target torque at 1200N or more. Maximum power transfer efficiency was 81.8% at the 1200N.
