Cam & translating roller follower
φ = 0.0°0.0°
Cam speed rpm
Above 120 rpm the animation is capped so it stays readable. The diagrams always use the rpm you set.
RiseDwellFallConst. velocityCommon normal
Live readout
Section—
Displacement s—
Velocity v—
Acceleration a—
Jerk j—
Pressure angle φ—
Pitch-curve radius ρ—
Over one revolution
Displacement range—
Peak |v|—
Peak |a|—
Peak |j|—
Peak |φ|—
Min convex ρ (pitch)—
Largest cam radius—
SVAJ diagrams & pressure angle vs cam angle θ
RiseDwellFallConst. velocity
Click or drag on any diagram to move the cam to that angle. The dashed line marks the current position.
Motion equations for the current segments
Each segment is written with its own numbers substituted: β in radians and the displacements in mm. θ is in radians, measured from the start of that segment, so θ/β runs from 0 to 1.
v = ds/dθ (mm/rad), a = d²s/dθ² (mm/rad²), j = d³s/dθ³ (mm/rad³).
The diagrams above plot the time derivatives: multiply v by ω, a by ω², and j by ω³, with ω in rad/s.