Pitch Circle Problem 8.17 Construct the profile of a disk cam that ...
Pitch Circle Problem 8.17 Construct the profile of a disk cam that ...
Pitch Circle Problem 8.17 Construct the profile of a disk cam that ...
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160˚<br />
140˚<br />
120˚<br />
180˚<br />
100˚<br />
1 inch<br />
200˚<br />
80˚<br />
220˚<br />
60˚<br />
240˚<br />
40˚<br />
260˚<br />
20˚<br />
280˚<br />
0˚<br />
300˚<br />
320˚<br />
340˚<br />
<strong>Problem</strong> 8.22<br />
Lay out <strong>the</strong> rise portion <strong>of</strong> <strong>the</strong> <strong>cam</strong> <strong>pr<strong>of</strong>ile</strong> if a flat-faced, translating, radial follower's motion is<br />
uniform. The total rise is 1.5 in, and <strong>the</strong> rise occurs over 100˚ <strong>of</strong> can rotation. The follower dwells<br />
for 90˚ <strong>of</strong> <strong>cam</strong> rotation prior to <strong>the</strong> beginning <strong>of</strong> <strong>the</strong> rise, and dwells for 80˚ <strong>of</strong> <strong>cam</strong> rotation at <strong>the</strong><br />
end <strong>of</strong> <strong>the</strong> rise. The <strong>cam</strong> will rotate counterclockwise, and <strong>the</strong> base circle radius is 3 in.<br />
Solution:<br />
The displacement <strong>pr<strong>of</strong>ile</strong> can be easily computed using <strong>the</strong> equations in Chapter 8 in a spreadsheet<br />
or MATLAB program. The <strong>pr<strong>of</strong>ile</strong> equations are:<br />
For 0 90˚<br />
s = 0<br />
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