Question

follower arm 3 4 X cam 2 002 1. The above figure shows a cam and follower. (10 points) 1) Using graphical methods, find and sketch the equivalent fourbar linkage for this position of the cam and follower. 2) Using graphical methods, find the pressure angle at the position shown. 2. Follow the video https://www.youtube.com/watch?v=kTziNDFzGz0 (starts at time 9:12) and make the same circular cam and linear cam in Solidworks (30 points) 3. Design a simple, spur gear train for a ratio of -7:1 and a diametral pitch of 8. Specify pitch diameters and numbers of teeth for both gear and pinion. Calculate the contact ratio. (20 points) 4. Design a compound, spur gear train for a ratio of -80:1 and diametral pitch of 12. Specify pitch diameters and numbers of teeth for both gear and pinion. Sketch the train to scale (hand sketch or CAD) (Hint: Since the ratio is negative, we want to have an odd number of stages or an even number with an idler) (20 points) 5. Design a compound, reverted, spur gear train for a ratio of 24:1 and diametral pitch of 4. Specify pitch diameters and numbers of teeth. Sketch the train to scale. (hand sketch or CAD) (Hint: Since the ratio is positive, we want to have an even number of stages) (20 points)

          follower arm
3
4
X
cam
2
002
1. The above figure shows a cam and follower. (10 points)
1) Using graphical methods, find and sketch the equivalent fourbar linkage for this position
of the cam and follower.
2) Using graphical methods, find the pressure angle at the position shown.
2. Follow the video https://www.youtube.com/watch?v=kTziNDFzGz0 (starts at time 9:12)
and make the same circular cam and linear cam in Solidworks (30 points)
3. Design a simple, spur gear train for a ratio of -7:1 and a diametral pitch of 8. Specify
pitch diameters and numbers of teeth for both gear and pinion. Calculate the contact ratio.
(20 points)
4. Design a compound, spur gear train for a ratio of -80:1 and diametral pitch of 12. Specify
pitch diameters and numbers of teeth for both gear and pinion. Sketch the train to scale
(hand sketch or CAD) (Hint: Since the ratio is negative, we want to have an odd number
of stages or an even number with an idler) (20 points)
5. Design a compound, reverted, spur gear train for a ratio of 24:1 and diametral pitch of 4.
Specify pitch diameters and numbers of teeth. Sketch the train to scale. (hand sketch or
CAD) (Hint: Since the ratio is positive, we want to have an even number of stages) (20
points)

follower arm
3
4
X
cam
2
002
1. The above figure shows a cam and follower. (10 points)
1) Using graphical methods, find and sketch the equivalent fourbar linkage for this position
of the cam and follower.
2) Using graphical methods, find the pressure angle at the position shown.
2. Follow the video https://www.youtube.com/watch?v=kTziNDFzGz0 (starts at time 9:12)
and make the same circular cam and linear cam in Solidworks (30 points)
3. Design a simple, spur gear train for a ratio of -7:1 and a diametral pitch of 8. Specify
pitch diameters and numbers of teeth for both gear and pinion. Calculate the contact ratio.
(20 points)
4. Design a compound, spur gear train for a ratio of -80:1 and diametral pitch of 12. Specify
pitch diameters and numbers of teeth for both gear and pinion. Sketch the train to scale
(hand sketch or CAD) (Hint: Since the ratio is negative, we want to have an odd number
of stages or an even number with an idler) (20 points)
5. Design a compound, reverted, spur gear train for a ratio of 24:1 and diametral pitch of 4.
Specify pitch diameters and numbers of teeth. Sketch the train to scale. (hand sketch or
CAD) (Hint: Since the ratio is positive, we want to have an even number of stages) (20
points)

Added by Micheal R.

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