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DIRECTION OF MOTION (THE CRANK (crank includes: (rod - links rotating part…
DIRECTION OF MOTION
THE CRANK
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crank includes:
rod - links rotating part to reciprocating part; attached at both pinned joints; hold parts together - enables rotation relative to each other
reciprocating part, piston/slider
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rotating part on axle, wheel
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when wheel moves, one point follows wheel, other part moves forwards & backwards (reciprocating parts)
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DIFFERENT CAMS
snail cam - straight edge cut into gently curving edge; rotates in one direction; follower raise slowly then drops
eccentric cam - axle is off-centre; follower moves gently, wave-like motion