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Terms in this set (17)
What is a mechanism?
A device that transmits movements so that the output movement is different than the input movement.
ALSO: The part of a machine that contains two or more pieces arranged so that the motion of one compels the motion of the others.
What is a mechanism used for?
Can be used to change the:
Mechanisms are generally used to:
-direction of a movement
-the type of movement
-speed of movement
-amount of torque available to do work
A mechanism used for transmitting rotary motion and torque.
Made when two or more gears are meshed
If the output gear is larger than the input gear, the speed & torque will:
If the output gear is smaller than the input gear, the speed & torque will:
If the input gear completes 4 revolutions (or is 4 times smaller) than the output gear, what is the gear ratio?
4:1 (more torque)
If the output gear completes 20 revolutions (or is 20 times smaller) than the input gear, what is the gear ratio?
1:20 (more speed)
less speed, larger output gear
less torque, smaller output gear
A push or pull in a straight line
A push or pull in a circular direction
Types of movement:
Around in a circle
Back and forth in an arc
Straight in one direction →
Back and forth in a straight line ↔
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