belt and pully,levers, motion, gears Flashcards
what are the 2 types of belts
round belt
vee belt
adv of vee belt
slips less because of surface area
adv of round belt
low force application
what is a sprocket and chain used for and why
pillar drills
same distance
rotary motion
quiet
cheap
describe a cross belt
the 2 gears turn in the same direction
what are class 1 levers and examples
efl
see saw
what are class 2 levers and examples
fle
wheel borrow
what are class 3 levers and examples
lef
thongs
what does -e stand for
-f
-l
e - effort
f - fulcrum
l - load
what makes things easier to move
big distance from the effort makes it easier to move
what is rotary
360 degrees
what is linear
strait line
what is oscilating
back and forth but not strait
like a swing
what is reciprocating
back and forth in a strait line
name the 3 cams
pear shaped -🍐
heart shaped - ❤️
ecentric- 🔴
name 3 followers
roller
flat
knife
what are gears
-
wheels with teath
move in a rotary motion
most gears turn together
but 2 gears will turn in opposite direction
what ones gets turned by who driven or driver
driven gets turned by driver
explain what a ideler gear does
lets the 2 out side gears turn in the same direction
how to calculate the amount of teeth
DRIVEN
———- = NUMBER OF TEETH
DRIVER
NEED TO KNOW
BIG TO SMALL SPEED UP
SMALL TO BIG SLOW DOWN
how do you calculate the the rise of the cam
rise = radiun - height
