The construction for the parabola involves dividing the cam-displacement angle into a convenient number of parts, and the follower displacement into the same number of parts.Radial lines are drawn from the start position to each of the follower division lines, and the parabola is obtained by drawing a line through successive intersections. The construction involves drawing a semi-circle and dividing it into the same number of parts as the cam-displacement angle.
The Mc Gill® CAMROL® full complement needle bearings feature black oxide-treated bearing steel.
They are available in two basic mounting styles for use in mechanical automation or linear motion applications.
To reduce the shock on the follower, the cam graph can be modified as indicated in Fig. However, this action results in an increase in the average rate of rise or fall of the follower.
5040302010- 5040302010- Radius to remove abrupt change in direction Angular displacement of cam Radius to remove abrupt change in direction Angular displacement of cam 2 Uniform acceleration and retardation motion is shown in Fig. The graphs for both parts of the motion are parabolic.
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