High Impact: Pneumatic Power Tools

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High ImpactPneumatic Power Tools

• Pneumatic Cut Off Tool
• Molly McCormack

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The Pneumatic Cut Off Tool

• gtgt It slices . . .
• gtgt It dices . . .
• gtgt It can even cut open the kitchen sink!

This tool is only very similar to the tool I
dissected.
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Operation Cut Off Tool
2. Area of high pressure
3. Area of lower pressure
Middle (rotates)
Vane
1. Where air enters
4. Air begins to escape
5. Remainder of air escapes
The Sliding Vane Motor / Rotor
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Once Upon A Time

• a guy named Fuller built a water pump ? 1870

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Evolution

• Goodwins water meter ? 1897

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Back To The Future

• Blackmers current models of sliding
  vane pumps
• First ? 1899

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Calculations

• Consumed air ? 8.16 ft3/min
• Actual ? 4.4 ft3/min
• Why is there a difference?
• Assumed choke point
• Radius measurement
• Pressure of consumed air? 90 psi 620 kPa

Note I worked with Matt T. on this calculation.
-CAMM
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The Spiral Learning Continuum

• gtgt Reason sliding vane motors work
• gtgt Speed of sound limitation
• gtgt Solution methods
• gtgt New concepts

First Semester
Senior Year