InputCouplerOutput
1× uses the entered speed: 15 rpm takes 4 seconds per turn. Drawing scale fits the frame and stays fixed during playback.
- Input angle
Scotch-yoke mechanism: a pin sliding in a slot
The rotating pin slides vertically inside the slot while the yoke moves horizontally. Its position is x = a cos θ, giving sinusoidal travel at constant input speed. Switch to the slider-crank to compare their intermediate motion.
Linkages
Cam & intermittent motion
Change dimensions & drive
Length unit: mm
Playback controls sit directly below the drawing. Editing pauses playback.
What to watch in this mechanism
The rotating pin slides vertically inside the slot while the yoke moves horizontally. Its position is x = a cos θ, giving sinusoidal travel at constant input speed. Switch to the slider-crank to compare their intermediate motion.
Blue is the prescribed input, green is the connecting link and red is the output. Change the blue dimensions, then use the button to return to the drawing. This page calculates motion, not the required motor force or torque.
Compare the ten mechanism types →