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cam and follower mini project report fre download
#1

A cam follower, also known as a track follower, is a specialized type of roller or needle bearing designed to follow cam lobe profiles. Cam followers come in a wide range of different configurations, however the most defining feature is how the cam follower is mounted on its coupling part; Stud style cam followers use a stud while the yoke style has a hole through the center. A cam is a mechanical device used to transmit motion to a follower by direct contact. The driver is called the cam and the driven member is called the follower. In a pair of cam followers, the cam rotates normally while the follower can move or oscillate. A known example is the camshaft of an automobile engine, where the cams drive the push rods (the followers) to open and close the valves in synchronization with the movement of the pistons.


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The modern pin type follower was invented and patented in 1937 by Thomas L. Robinson of McGill Manufacturing Company. It was replaced with a standard bearing and bolt. New cam followers were easier to use because the bolt was already included and could also handle higher loads. While roller cam followers are similar to roller bearings, there are quite a few differences. Standard ball and roller bearings are designed to be pressed in a rigid housing, which provides circumferential support. This prevents the outer race from deforming, so that the cross-section of the race is relatively thin. In the case of cam followers, the outer stroke is loaded at only one point, whereby the outer stroke needs a thicker cross-section to reduce deformation. However, to facilitate this, the diameter of the roller must be reduced, which also reduces the dynamic load capacity.



The end plates are used to hold the needles or support axially. In stud style followers, one of the end plates is integrated into the race / interior stud; The other is pressed over the bolt to one shoulder in the internal stroke. The internal stroke is hardened by induction so that the bolt remains soft if modifications are required. In yoke style followers, the end plates are combed or pressed onto the inner race or the liquid metal injected into the inner race. The internal stroke is hardened by induction or hardened. Another difference is that a lubrication hole is provided to relubricate the follower periodically. A hole is provided at both ends of the bolt for lubrication. They also usually have a black oxide finish to help reduce corrosion.
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