Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2019 - September 11, 2019
Traction drive is a high-performance transmission system. The power is transmitted by shear stress of lubrication oil on the contact point between the two rollers. There system has advantages of noise, vibration and high-speed operation compared with gears. On the other hand, the temperature of an oil film on the roller surface is increased due to the heat generation at the contact point. The increasing of an oil film temperature causes the decreasing the power transmission efficiency. Thus, traction drives need the cooling device or large amount of supply oil. However, these cooling method leads to increase of device weight, device cost and energy consumption. From these back grounds, the authors investigated the cooling effect of supply oil direction and its oil film behavior on traction roller because the cooling method doesn’t need new cooling system. In this study, the oil film behavior was observed, and oil film temperatures were measured. As a result, it is found that oil film temperature is affected by the oil fling-off from the roller surface, the oil film area around the contact point and the oil film distribution.
