UNIVERSAL COLLAGE OF ENGINEERING & TECHNOLOGY

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Presentation transcript:

UNIVERSAL COLLAGE OF ENGINEERING & TECHNOLOGY 3rd sem Mechanical engineering SUBJECT:- SECOND LAW OF THERMODYNAMICS Sr no. Student name enrollment no. 1. Acharya Akash B.. 140463119005 2. Dabhi Anil K. 140463119005 3. Joshi Rahul T. 140463119010 4. Kachhiya Divya N. 140463119011 5. Sanandia Pooja S. 140463119034

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

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

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

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

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

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

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

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