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Flip to reveal answersName the five mechanism families.
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All 4 Flashcards — Changing speed and force
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Question
Name the five mechanism families.
Answer
Gear-driven, belt-driven, cam, lever and linkage.
Question
What is each mechanism family there to change?
Answer
Gears — speed and force with no slip. Belt — speed across a gap, quietly. Cam — rotary into a timed rise and fall. Lever — force. Linkage — direction or path.
Question
How is a gear or belt ratio calculated?
Answer
Driven divided by driver — teeth for gears, diameters for belts. Small driving large is slower and stronger; large driving small is faster and weaker.
Question
Why might a designer choose a belt over gears?
Answer
Shafts far apart or not perfectly aligned, quiet running, lower cost, no lubrication needed, and a slip under overload that protects the motor.
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Topic 3.3 hub
Mechanical systems
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