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BOX CAMS
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A box cam consists of a rotating disc, normally made from steel. A groove is cut / milled into its surface to a specific depth (this is the profile). The groove may be an unusual shape as seen in the example below. As the disc rotates the follower follows the path of the groove. Cams of this type are used in a range of machines where a repetitive motion is needed.

 
   

A practical application of a box cam can be seen opposite. The machine cuts slots in steel parts for car engines. The box cam and follower automatically operates the guard.
The rotating box cam ensures that the follower lifts the guard after machining has taken place, so that a new part can be placed in the vice and machined.
The flat plate cam shown below is similar to the box cam in that it consists of a groove (profile) cut / milled into a flat plate.

 
 
 
 
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