Cams and followers (AQA GCSE Design and Technology): Flashcards
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Type of motion cams convert rotary motion into
Type of motion cams convert rotary motion into
Reciprocating motion
Meaning of reciprocating motion
Meaning of reciprocating motion
Back and forth movement
How long pear-shaped cam follower stays stable
How long pear-shaped cam follower stays stable
Approximately half the rotation cycle
How eccentric cam is mounted on shaft
How eccentric cam is mounted on shaft
Off-center
Alternative name for drop cam
Alternative name for drop cam
Snail cam
Drop cam movement pattern
Drop cam movement pattern
Gradual rise then sudden drop
Cam movement term: follower stays stationary
Cam movement term: follower stays stationary
Dwell
Stroke in cam systems
Stroke in cam systems
Total movement range from highest to lowest position
Main advantage of flat follower
Main advantage of flat follower
Handles heavy loads effectively
Main advantage of knife edge follower
Main advantage of knife edge follower
Very precise, traces complex cam shapes accurately
Main disadvantage of knife edge follower
Main disadvantage of knife edge follower
Wears out quickly
Main advantage of roller follower
Main advantage of roller follower
Reduced friction, high-speed operation possible
What cams control in car engines
What cams control in car engines
Valve timing
Type of motion eccentric cam creates
Type of motion eccentric cam creates
Smooth, continuous up and down movement