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Pivot Center Load Design Toggle Formula and Calculator

Machine Design Application, Equations and Calculators

Toggle Mechanism Pivot Center Load Design Formula and Calculator

Preview: Toggle Mechanism Pivot Center Load Design Calculator

Figure 1 Toggle Mechanism

Eq. 1
Q = P · ( l / ( l + l₁ ) ) · ( 1 / n )

Eq. 2
P = Q / [ ( l / ( l + l₁ ) ) · ( 1 / n ) ]

Where:

Q = force applied to handle. lbf, (N)
P = clamping force, lbf. (N)
l = length, in, (mm)
l₁ = length, in, (mm)
n = efficiency coefficient, 0.98 to 0.84, determined by frictional losses in pivots and bearings,

Reference:

Handbook of Machining and Metalworking Calculations
Ron A. Walsh
2001

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