Design and Kinematic Analysis of a Two-Sided Asymmetric Scotch Yoke Mechanism with Variable Stroke Lengths

The Scotch yoke mechanism is a device used to change rotary motion into linear motion, usually with equal strokes on each side. This study introduces a modified Scotch yoke mechanism that produces different stroke lengths on each side, making it useful for applications needing varied displacements. The design modeling and motion analysis were completed using SolidWorks to confirm the performance of this asymmetrical stroke. A kinematic study shows how changes in the rotor and yoke design lead to controlled, distinct stroke lengths. This work demonstrates that the adapted Scotch yoke can expand its use in systems requiring precise motion control with varied linear displacements, adding flexibility to its traditional design. JEL: O31