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P11511 Project Review

P11511 Project Review. Project Team, Faculty, and Customer. Project Team: Project Lead: Kevin Argabright (ME) Team Members: John Fitch Dean (ME) Mike Buonaccorso (ME) Justin Eichenberger (ME) Project Guide: William Nowak (Xerox Corporation) Faculty: Consultant Dr. Stephen Boedo

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P11511 Project Review

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  1. P11511 Project Review

  2. Project Team, Faculty, and Customer • Project Team: • Project Lead: Kevin Argabright (ME) • Team Members: John Fitch Dean (ME) Mike Buonaccorso (ME) Justin Eichenberger (ME) • Project Guide: William Nowak (Xerox Corporation) • Faculty: • Consultant Dr. Stephen Boedo • Customer: • Xerox Corporation Erwin Ruiz Melissa Monahan

  3. Project Description • Create a measuring tool to aid Xerox Corporations engineering team in collecting necessary data for characterizing bearing life in the iGen Fuser assembly.

  4. Customer Needs • Used a pairwise comparison chart • Most Important Needs: • Develop method to characterize physical properties of bearings over their physical life ✓ • Document the procedure for collecting data ✓

  5. Customer Needs – cont’d • Develop method to characterize physical properties of bearings over their physical life ✓ • Collect data on bearing properties ✗ • Correlate physical property to end of life ✗ • Incorporate multiple sensors ✓ • Characterize physical properties over the bearing's physical life ✗ • Create failure criteria ✗ • Document the procedure (Testing) ✓ • Testing bearings is quick and easy to do ✓ • Document the procedure (Collecting Data) ✓

  6. Engineering Specs Notes: No longer heating the bearing Temperature measurements will still be taken Time to take measurements is still TBD

  7. Concept Summary • Design chosen • Fixed Outer Race • Loading the bearing - Pneumatic cylinder • Rotating the bearing - DC motor • Heating the bearing - Conduction to outer surface • Driving shaft - Belt • Measuring vibration - Accelerometer • Measuring heat - Thermistor • Microcontroller • Labview

  8. Final Product

  9. Project Status • Working • Motor spins bearing at specified speed • Pneumatic cylinder loads bearing at specified load • Accelerometer measures vibrations • Thermistors measure temperature • LabView collects data • Not Working • Bearing is not heated to spec

  10. Project Schedule • The project is 2 weeks behind, with first round of testing occurring in week 10 instead of week 8 • Data is not going to be collected by our group

  11. Project Budget • Starting budget was $3000 • Ending balance is $88.95 • Used ~97%

  12. System Architecture

  13. LabVIEW Interface • Labview Interface displaying running conditions, waveforms, and expected frequencies. • Likely to be updated as debugging and refinement is continued • Industry Standard for easy portability and future modifications • Waveforms shown are from sample data.

  14. Control System • All electronics and pnumatic controls housed in enclosed PVC “junction box” • Device fed on a single standard wall outlet • Warning and status indicators on front panel • Emergency stop button that will kill all power to system • Modular architecture will allow for portability and quick set up and tear down.

  15. Project Wrap Up Successes • Established a working relationship with multiple engineers at the Xerox Corporation • Gained extensive experience in different machining operations • Became more familiar with the LabVIEW program as well as interfacing hardware with software • Design met most specifications • Worked together well as a team throughout the project

  16. Project Wrap Up Failures • Due to the uneven geometry, we decided to eliminate the heater due to concerns of interference in the fixture • Due to time constraints, extensive data was not able to be collected • We were not able to correlate bearing life with the data our fixture provided

  17. Future Work • Heating the bearing • As described previously, the mica band heater was eliminated from the tester • A different type of heater (cartridge heater) or alternate manufacture can be selected but care must be taken that the tolerances are tighter than the one previously chosen • Correlating bearing life with data • Extensive testing must be performed before bearing life can be coordinated with the data provided by the tester

  18. Future Work Cont’d • LabVIEW Interface • Further debugging and refinement required • Mounted bearings • Mounting bearings create interference and it would be ideal to eliminate them in a future design if possible • Loading/Unloading bearings • Bearings can be made easier to replace to streamline testing procedures

  19. Lessons Learned • Take what manufacturers say with a grain of salt. • Lead times and design specs • Customer needs can be more ambitious than time allows. • Keeping good meeting minutes is important for staying organized.

  20. P11511 Senior Project Review Thank you for attending!

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