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ch 10 (Gear system (worm gears (worm and wormwheel (application…
ch 10
Gear system
crossed axis helical gears
helical gears
straight bevel gears
worm gears
worm and wormwheel
application
industrial motor unit
model railway engine
guitar machine heads
spur gears
rack and pinion
corkscrew
pillar drill
camera tripod
Pulley & Belt
Require no lubrication
relatively cheap to produce
Quiet in operation
protect user from injury and drive motor from damage when a pillar drill jams
Chain & Sprocket Systems
no slip
Disadvantage
Need for lubrication to reduce wear
Backlash between chain and sprockets
Relatively high cost
Noisy operation
Advantage
essential in machinery where no moving parts
the crank mechanism
crank and slider
No-slip Belt and Pulley System
special toothed belt and pulley
quiet and no-slip drive