チェーン式CVTのトルク伝達時のロッカーピン端面の摩耗要因

抄録

The objective of this study is to investigate the forces acting on the end surfaces of pins and motions of pins of chain type CVT. The contact force acting on the end surfaces of pins under torque transmitting condition was measured by strain gauges attached on a modified pin of which the thickness was partly reduced by machine work. The time history of strains was measured under torque transmitting condition by data logger equipped on the chain belt. The motions of pins in pulley groove were also investigated by using transparent pulley made from acrylic resin. The digital camera was used to investigate the angle between leading and following pins of chain. Test results showed that the bending deformations of pins were confirmed by contact force applied by pulley surfaces. The position where the contact force acts was also calculated by assuming the pin was simply modeled as a beam that eccentric compressive load was applied. Calculation results showed that the position of contact force was moved by motion of pins in pulley grooves. The observations also revealed that the angle between leading and following pins of chain were rapidly changed at entrance and exit of pulley grooves when the wrapping radius of chain was large.