ME 352  Machine Design I
Name of Student____________________________
Spring Semester 2011
Lab Section Number_________________________
Homework No. 2. Parts (i)  (iv) are due at the beginning of lecture on Friday, January 28th. (20 points).
Part (v) is due at the beginning of lab on Monday, January 31st, or Tuesday, February 1st. (20 points).
Given a planar fourbar linkage (for typical notation of a fourbar linkage see Figure 2.15, page 62,
and Figure 2.19, page 66, in the textbook) with the following link dimensions:
Ground Link 1
14.0 inches
Input Link 2
7.0 inches
Coupler Link 3
10.0 inches
Output Link 4
8.0 inches
The fixed X and Yaxes are specified as horizontal and vertical, respectively, and the origin of this fixed
Cartesian reference frame is coincident with the ground pivot of the input link 2.
For the input angle
D
60
2
=
θ
(counterclockwise from the Xaxis):
(i) Choose a suitable scale and accurately draw the fourbar linkage in the two possible configurations
(i.e., the open and closed, or crossedover, configurations). Measure the values of the joint variables
3
θ
and
4
θ
for each configuration. A similar problem of a slidingblock linkage is illustrated by Example
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 Spring '08
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 Machine Design, joint variables

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