PPT: Cams Mechanical Engineering Notes | EduRev

Theory of Machines (TOM)

Mechanical Engineering : PPT: Cams Mechanical Engineering Notes | EduRev

 Page 2


3
? Cams are used to convert rotary motion to 
oscillatory motion (almost always) or 
oscillatory motion to rotary motion (rarely)
? For high speed applications – example, 
internal combustion engines
? Objectives of this chapter:
? Learn fundamental concepts and terminology
? Learn how to design a cam and follower set to 
achieve a desired output motion.
Page 3


3
? Cams are used to convert rotary motion to 
oscillatory motion (almost always) or 
oscillatory motion to rotary motion (rarely)
? For high speed applications – example, 
internal combustion engines
? Objectives of this chapter:
? Learn fundamental concepts and terminology
? Learn how to design a cam and follower set to 
achieve a desired output motion.
? In IC engines to operate the inlet and exhaust valves
Page 4


3
? Cams are used to convert rotary motion to 
oscillatory motion (almost always) or 
oscillatory motion to rotary motion (rarely)
? For high speed applications – example, 
internal combustion engines
? Objectives of this chapter:
? Learn fundamental concepts and terminology
? Learn how to design a cam and follower set to 
achieve a desired output motion.
? In IC engines to operate the inlet and exhaust valves
Based on modes of Input / Output motion
1 Rotating cam – Translating follower
2 Rotating cam – Oscillating follower 
3 Translating cam – Translating follower 
Page 5


3
? Cams are used to convert rotary motion to 
oscillatory motion (almost always) or 
oscillatory motion to rotary motion (rarely)
? For high speed applications – example, 
internal combustion engines
? Objectives of this chapter:
? Learn fundamental concepts and terminology
? Learn how to design a cam and follower set to 
achieve a desired output motion.
? In IC engines to operate the inlet and exhaust valves
Based on modes of Input / Output motion
1 Rotating cam – Translating follower
2 Rotating cam – Oscillating follower 
3 Translating cam – Translating follower 
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