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A cam is an element that compels the movement of another element, follower by direct contact. A cam is classified according to its shape and a follower is classified either according to its motion or the nature of its surface in contact. The Figure 0 2: Cam Apparatus shows 3-4-5 polynomial cam with roller follower. A Cam-follower is designed based on the
  • displacement – the distance through which the follower is moved for one revolution of the cam
  • velocity – the speed with which the cam moves the follower
  • acceleration – the rate of change velocity of the follower and
  • jerk – the rate of change of acceleration.