Question

A cam drive is used for a mechanism on an automated assembly machine.The cam must:

a. Rise 0.75 in with constant velocity motion in 3 sec.
b. Dwell for 1.5 sec.
c. Fall in 2 sec with constant velocity.
d. Dwell for 0.5 sec.
Determine the speed of the cam.

Answer 1

The speed of the cam during constant velocity motion is 0.25 in/sec during the rising phase and 0.375 in/sec during the falling phase.

Step-by-step explanation:

The speed of the cam can be determined by calculating the average velocity for each phase of motion and dividing the distance traveled by the time taken.

1. For the rising phase: The average velocity is equal to the distance traveled (0.75 in) divided by the time taken (3 sec), giving a speed of 0.25 in/sec.
2. For the falling phase: The average velocity is equal to the distance traveled (0.75 in) divided by the time taken (2 sec), giving a speed of 0.375 in/sec.

Therefore, the speed of the cam during constant velocity motion is 0.25 in/sec during the rising phase and 0.375 in/sec during the falling phase.