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Understanding Cams and Followers for Linear and Rotary Motion

Learn about the functionality of cams and followers in converting motions, various cam profiles like square, pear, heart, and examples of rotary cams in operation. Explore cylindrical cams and roller followers in different applications.

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Understanding Cams and Followers for Linear and Rotary Motion

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  1. Follower Cam • The cam and follower is a device which can convert rotary motion (circular motion) into linear motion (movement in a straight line). Cams Cam and Follower Followers (valves)

  2. The cam can have various shapes. These are know as cam profiles. follower Cam Cam and Follower Pear Heart Circular Drop

  3. A follower is a component which is designed to move up and down as it follows the edge of the cam. Follower cam Cam and Follower Knife edge Follower Flat foot follower Off set follower Roller follower

  4. The 'bumps' on a cam are calledlobes. • The square cam illustrated has four lobes, and lifts the follower four times each revolution. Follower Square cam Cam and Follower Examples of other rotary cam profiles.

  5. Examples of a Rotary cams in operation. Cam and Follower Cams used in a pump. Control the movement of the engine valves.

  6. Linear cam • The linear cam moves backwards and forwards in a reciprocating motion. Cam Follower Distance moved by the follower Cam and Follower

  7. Cam rise and Fall Max Lift Min Lift • Cams can also be cylindrical in shape • Below a cylindrical cam and roller follower. • The cam follower does not have to move up and down - it can be an oscillating lever as shown above.   Cam and Follower

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