Hookes joint - Maximum velocity ratio between driving & driven shaft - Theory of Machines - 1

Q.  In a Hooke's joint, maximum velocity ratio between driving and driven shaft is possible if θ is
- Published on 06 Aug 15

a. 0
b. π
c. 2 π
d. all of the above

ANSWER: all of the above

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    Discussion

  • Sravanthi   -Posted on 12 Nov 15
    - Hooke's joint is used to connect two non-parallel and intersecting shafts.

    - It is also called as Universal coupling.

    - Hooke's joint is used to transmit motion and power for shafts having angular misalignment.

    - The formula used to calculate velocity ratio is:

    ω = (ω1 cos α) / (1 – cos2θ sin2 α)

    - If maximum velocity is to be obtained denominator should be minimum. Hence, if cos θ = 1 we get the minimum value of denominator.

    - Therefore, if θ = 0, π, 2π... then ωmax = ω1 / cos α

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