ME 581 – H01
Name ________________________
1) Download http://www.mne.psu.edu/sommer/me581/h01.doc
2) Obtain a digital image of a mechanism, and paste it into this Word document. You may take
a digital photo, scan a hardcopy photograph or drawing, or obtain an on-line image.
3) Provide a name and brief description of the purpose for your mechanism.
POLYCENTRIC HINGE – hidden door hinge
______________________________________________________________________________
4) Use the MS-Word drawing toolbar or other drawing tools to draw a skeletal diagram for your
mechanism. Insert that drawing into this Word file. Clearly label the links and joints. Number
the links using 1 for the ground link, and letter the joints.
5) Identify the number of links (nL), 1 DOF joints (nJ1), 2 DOF joints (nJ2), 3 DOF joints (nJ3)
and mobility (M).
8
nL __________
10
nJ1 __________
0
nJ2 __________
6) Diagram the topology of your mechanism.
7) Submit PDF copy.
0
nJ3 __________
1
M __________
ME 581 – H01
Name ________________________
D
3
5
8
B
4
F
C
G
A
2
E
6
H
7
1
1
C
D
B
3
R
3
5
8
G
R
6
4
4
F
C
D
R
E
6
G
R
8
F
P
R
5
R
E
B
A
2
Note: Two revolutes between 1-7
and 1-6 exist at point H
7
R
R
H
7
1
2
1
A
H1-7
1
R
H1-6