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Four Bar Mechanism Question
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Posted by: srshetty

06/03/2005, 03:34:24

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Dear all,

I am trying to design a four bar mechanism wherein the Travel ratio should be greater than the mechanical advantage/force
augmentation which i 'll be getting using that mechanism(Ratio should be more than 2)

For eg. an input of 50 kgf to the system should give an output more than 250 kgf and at the same time the travel ratio(input
link travel/output travel) should not exceed 2.5 ...

I tried with many combination and couldn't able to get the ratio more than 1.1 - 1.2

Can anybody help me to get a solution ??


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Re: Four Bar Mechanism
Re: Four Bar Mechanism -- srshetty Post Reply Top of thread Forum
Posted by: zekeman

06/03/2005, 15:22:06

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If you could, you would be getting more energy out of the system than you put in, an obvious impossibility. The best you can do is
input motion/output motion >/= output force/input force
Using your values, this becomes
input motion/output motion >/=250/50=5
So you can't do it with any mechanism.

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