Hello! TaA - Beverly Chou - 1 What are we doing ? intro part one - - PowerPoint PPT Presentation

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Jan 13, 2023 618 likes •767 views

Hello! TaA - Beverly Chou - 1 What are we doing ? intro part one Intro to gear mechanisms. Explain common components/parts to each other. part two Group activity - Make a mechanism on paper! extra time Intro to mechanical advantage + some

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TaA - Beverly Chou - 1

Hello!

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What are we doing ?

intro part one Intro to gear mechanisms. Explain common components/parts to each other. part two Group activity - Make a mechanism on paper! extra time Intro to mechanical advantage + some examples. end

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Why do we need mechanisms?

To convert input forces and movement to specifjc output forces and movements

COMMON USES convert mechanical energy from engines or motors make it easier to do tasks that require a lot of force

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6 Types of Motion

6 types 3 axes of translation 3 axes of rotation

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Let’s talk about gears!

Make sure your gears have the same pitch. Make sure your shafts fjt. OTHERWISE YOUR GEARS WILL NOT MESH, THINGS WILL NOT FIT & YOU WILL BE SAD

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Let’s talk about gears!

This can vary based on your design These can vary based

n your design

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Tell us about your component (:

bevel gear worm gear lead screw (not a gear, but useful & easy) spur gear rack and pinion cam and follower (not a gear, but super cool) helical gear

link to animations

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Make a mechanism!

GROUP 1: convert x translation to z translation GROUP 2: convert z rotation to x translation GROUP 3: convert y rotation to y translation

1 2 3

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Questions?

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Share your feedback

n this workshop:

https://bit.ly/2K5llUX THANK YOU!!!

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Mechanical Advantage

How do we make it easier to do tasks that require a lot of force??

Instead of inputting a large force at

ne point,

you input a smaller amount of force

ver a distance.

In both scenarios, you are still have the same total input power and acheive the same task. MA = (force output) / (force input)

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Examples!

Shifting the gears on your bike when you go uphill crowbars things with levers pushing a door close to the hinge vs pushing it at the handle

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Equations !!!

This example has two spur gears with the same pitch. (# of teeth on output gear) (# of teeth on input gear) (diameter of output gear) (diameter of input gear)

Mech. Advantage

= =