上浒充大学 Fundamental Law of Gearing SHANCHAI HAD TONG UNEVERSI Involute curve "String” There are 2 common tangent to profiles that give base circle constant angular and normal velocity ratios to inyolute ·Cycloidal ·Involute The involute profile can maintain the same velocity ratio even if there is some misalignment in the distance between the shafts. ·We can equate the angular velocity ratio to Cpe-pov) the gear ratio! Base circle or evolute ® 上泽充夏大粤 Fundamental Law of Gearing Meshing Action 2000-Q0UG WRIGHf,UWA8 There are 2 common profiles that give constant angular velocity ratios • Cycloidal • Involute The involute profile can maintain the same velocity ratio even if there is some misalignment in the distance between the shafts. • We can equate the angular velocity ratio to the gear ratio! Fundamental Law of Gearing Meshing Action Fundamental Law of Gearing