Air Engine

Air EngineDecember 21st, 2015Leah DawkinsAhmed HassanFady MakhaelJames Li

1The CNC machine allows you to use several different mills and drills to alter a part by cutting away material

Computer Numerical Control

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Air Engine Design

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Bill of MaterialsItemQuantityPriceTotal Item CostBall Bearing4$5.21$20.84Ball Bearing1$9.99$9.99Shaft2$1.96$3.92Flywheel1$16.06$16.06Second Flywheel1$4.03$4.03Joint1$5.88$5.88Piston Lock1$2.00$2.00Inlet Outlet Chamber1$15.88$15.88Inlet Outlet Piston1$5.47$5.47Engine Base1$50.37$50.37Main Piston Chamber1$56.64$56.64Total$191.084Cite image

5 CNC Appointments1 Lathe Appointment

Allotted Time for Constructionimage citation here

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CNC (Video)

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CNC (Video)

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CNC (Image Still)Image capture of CNC in motion. (2015). Dawkins, L

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Final Results9Cite image

Aesthetic changesFlywheel design changed from circular design to one with visible gear teethDesign yielded product with alternative purposes and usesFinal product valid as both an air engine and a pumpDesign10Cite image

Tool breakage milling tool failedFailure likely attributed to excessive feed rate, coupled with bending and pushing against the materialExcessive tolerances on parts orderedTolerances on the parts ordered were on the higher end of the distributor specificationsExceeded budgetMaterial wasteThe sizes of the teeth for the main fly wheel are uneven due to alignment issues between the HSM program the CNC machineDiscussion: Problems Encountered11Cite image

Material wasteThe sizes of the teeth for the main fly wheel are uneven due to alignment issues between the HSM program the CNC machineThermal expansion and cooling for aluminum occurs very quickly, so there was difficulty in mounting the ball bearings, so epoxy was used as a substituteDiscussion: Problems Encountered12Cite image

Use of the CNC machine and lathe machineSolidWorks and HSMWorks and their role in the project development processParts of the project development processDetermining design constraintsBudgeting time, money, and materialEnding with a final prototype productProject Takeaways13Cite image

We spent a great deal of time and money on our project and overcame many complications. Weve learned a great deal about the machining process and how it can be used to create prototypes and final designs. However, the limitations were considerable enough that the project could not reached full completion.

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Questions?15