🌀 Cycloidal Drive: Epitrochoid Disc, Ring Pins and Dual-Disc Balance (2D)

Face view of a cycloidal reducer: a lobed disc on an eccentric rolls around a fixed ring of pins and turns slowly backwards, giving a large reduction in one stage. Set the number of lobes, the pin circle, pin size, eccentricity, speed, torque, efficiency and disc mass, and see the reduction ratio, output torque, the pin loads and the shaking force that two discs cancel. The profile extremes, the lobe symmetry, the meshing and the pin load and balance are checked numerically, with four in-page numerical checks.