mechanisms (Cam and Follower) Flashcards
what can a cam and follower do
It is a device which can convert Rotary motion into reciprocating motion (movement in a straight line)
what is a follower
A follower is a mechanism which is designed to move up and down as it follows the edge of the cam
what is a cam
A cam is a specially shaped piece of material, usually metal or hard wearing plastic, which is fixed to a rotating shift
what is a good example of a product using cams
motor car engine which has cams to open and close valves and contact breaker points and operate fuel pumps
What are the most common groups cam can be placed under
rotary and linear
what do rotary cams change
rotary cams change rotary motion into reciprocating (backwards and forwards) motion
What determines the exact distance it moves (cam and follower)
Depends on the shape of the cam
the protrusion of a cam is called what
lobes
what are examples of rotary cams
what is a cam (eccentric)
what do linear cams do
change the direction and magnitude of a reciprocating motion
what does a linear cam look like
what is a stroke
the maximum distance that the follower rises
what is meant by the rise interval
the number of degree the cam rotates to produce the full stroke
what is meant by the dwell
the number of degrees of rotation during which no follower movement occurs
