Spring Link Toggle Clamp — Simulation Explorer

Patent series · US 5,676,357 — quasi-static model of document B, recomputed live in JavaScript from the same equations as the Python model

Stroke of the yoke
x — yoke position
Step advances the yoke by 1/40 of the stroke in the direction shown.
Workpiece and link
t — workpiece thickness
from the thinnest (tₙ − T) to the thickest (tₙ)
kₛ — spring link
T — tolerance width
EN 10029, 8–15 mm: T = 1.4 mm
Friction in the pins 52, 56
Drawing
E — exaggeration
Drawing only: graphs and values are always true.
Fixed data (read-only)
All data assumed for the model except T (EN 10029); the patent declares no numbers. See document B, table of §6.2.
Mechanism — side view
Along the stroke — closing travel to the left
current piece
thinnest (dashed)
thickest (dashed)
current x
At the current position
Conditions — document B, eq. (16)
    Domain — spring link stiffness × tolerance width (document B, figure 13)
    Green: all conditions hold, each point with its own setting, eq. (17). Dot: current choice.
    Reference cases (Python model)