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Flashcards in MechOneSecE-2 Deck (16):
1

Gear Train Problem 1

define Values
Re idler is ignored
Convert Values
What is known?
What is required?

2

Gear Train Problem 2

Draw Gear Train
Big is Driven(n)
Small is Driver(r)
Add arrows

3

Gear Train Problem 3

Add nn , dn ,Tn

4

Gear Train Problem 4

Add nr , dr ,Tr

5

Gear Train Problem 5

Add Values
Write formula
VR = nr/nn or Tn/Tr or Tn/Tr=nr/nn

6

Gear Train Problem 6

Rearrange formula for unknowns
Substitute Values
Solve

7

Tr

Teeth Driver

8

Tn

Teeth Driven

9

Explain Wedge

Converts Force applied Blunt Side to Inclined Side
MA given by ratio Slope/Width

10

Wedge Applications x 2

Axe
Door Stop

11

Draw a Screwjack 1

Drop Load line
Add Arrow (Load)
Drop cylinder lines (Screw)

12

Draw a Screwjack 2

Add nut to Base (Nut)
Angle out Legs

13

Draw a Screwjack 3

Angle down Pitch lines (Pitch)
Attach Handle at Load line (Effort)

14

Screwjack as a machine

Car Jack

15

Draw a Wheel and axle

Draw Wheel(deffort) and Axle(dload)
Add effortline(Preal) and Loadline(w)
Add arrows

16

Describe a Wheel and axle

Big wheel attached to a small axle
Force transfered
Rotate together

Door knob
turns spindle
controls latch