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Toggle Mechanism Center Locking Design Formula and Calculator

Machine Design Application, Equations and Calculators

Manufacturing Toggle Mechanism Center Locking Design Formula and Calculator

Preview: Toggle Mechanism Center Locking Design Calculator

Figure 1 Toggle Mechanism

Eq. 1
Q = 2 · P · tan(α + β ) · tan α₁

Eq. 2
β = arcsin f_o

Eq. 3
P = Q / ( 2 · tan(α + β ) · tan α₁ )

Where:

Q = force applied to handle. lbf, (N)
P = clamping force, lbf. (N)
α = angle, deg.
f_o = coefficient of friction (axles and pivot pins) 0.1 to 0.15

Reference:

Handbook of Machining and Metalworking Calculations
Ron A. Walsh
2001

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