Design of Machinery
6th Edition
ISBN: 9781260431315
Author: Norton, Robert
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 3, Problem 3.14P
Figure P3-3 shows a treadle-operated grinding wheel driven by a fourbar linkage. Make a model of the linkage to any convenient scale. Find its minimum transmission angles from the model. Comment on its operation. Will it work? If so, explain how it does.
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The following figure shows a treadle-operated grinding wheel driven by a four-bar linkage.Find the maximum and minimum transmission angles over its range of motion.
Figure below shows a four-bar linkage (non-scaled diagram) at an instant. The input
angle is equal to the output angle (02 - 04) and the transmission angle is 30°. The
input link is extended beyond joint B and an input force (Fin) is applied at the end of
it, while an output force is drawn from the midpoint of the output link. If an output
force of 30 N is desired from an input force of 10 N, how far the input link should be
extended, i.e., what is the distance from point B to the point where Fin is applied.
Fin
B
out
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02
04
A.
Non-scaled diagram; AB = 10, CD=r4 = 30 (output), all in mm
Identify whether the following set of dimensions determines a Grashoff, Non-Grashoff or SpecialCase mechanism. If it is a Grashoff mechanism state what is kind of kinematic inversion it is
Chapter 3 Solutions
Design of Machinery
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