トラクションドライブにおける二相流解析を用いた効果的な潤滑油供給方法に関する研究

摘要

本研究ではトラクションドライブにおける効果的な潤滑油の供給方法を検討することを目的に二相流解析を行った.解析結果より，各周速度における効果的な冷却方法は10m/s時は供給流量が6L/min,回転方向はかみめい，40，70m/s時は供給流量が16L/min，回転方向はかみめいが効果的であると考えられる.%Traction Drive is an excellent driving mechanism that transmits the rotating power by using the pressurized oil film. Therefore, compared with gears, it has an advantage of low vibration, low noise, and high-speed rotation. However, traction force is decreased by heat generation in contact point. When appropriate amount of traction oil is used in the traction drive, the roller as rolling element will be cooled and the decrease of traction coefficient is prevented. In this study, the distribution of oil film on the roller surface analyzed with two-phase flow analysis using VOF (Volume of fluid) method. Effective oil supplying method was studied by changing peripheral speed, rotational direction, and oil supply rate. As a result, it is found that the effective oil supplying method is different by peripheral speed of roller. The effective oil supply method is as follows. When the peripheral speed is 10 m/s, the supply flow rate is 6L/min. When the peripheral speeds are 40, 70m/s, the supply flow rate 16L/min. The rotational direction of roller is the same direction as the oil supplying direction with respect to the contact part regardless peripheral speed.