Chapter 4 - Mechanical Components & Devices Flashcards
(16 cards)
Equation for rotational speed
Number of revolutions / time
4 Types of Motion
1 - Rotary
2 - Linear
3 - Oscillating (back and forth in a rotary motion)
4 - Reciprocating (back and forth in a straight line)
What are efforts and load on a lever
Effort - Input force
Load - Output force
What is a linkage
Component used to direct forces and movement to where they are needed
What are cams and followers?
A mechanism to convert rotary motion into reciprocating motion.
What is a spur gear?
A wheel with teeth around its edges
What are shafts
Gears are mounted on shafts, which carry the rotation to different parts of the mechanism
What is mechanical advantage equal to?
Number of sections of rope pulling up on the object
Rule about Gears
The bigger the wheel, the slower the speed
Equation for velocity ratio
Diameter of the driven pulley / diameter of the driver pulley
Equation for Output Speed
Input speed / velocity ratio
Equation for Gear Ratio
Driven / driver
What gear system does the Rack and Pinion change
Rotary motion to linear
Mechanical advantage equation
Load / effort
What does a PEAR cam do
It remains stationary then gently rises and falls
Snail cam
Causes it to remain stationary while gently rising then suddenly falling
