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Belshaw Brothers Inc.

By: Nathan Klosterman, Isaac Sprague, Jaime Gilbert, Logan Crain, Nick Gosseen, and Jerrod Miller. Belshaw Brothers Inc. Problem Statement. Silicon Boot that seals Cutter Head breaks after two weeks Lubricant and silicon boot pieces drop into donut batter

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Belshaw Brothers Inc.

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  1. By: Nathan Klosterman, Isaac Sprague, Jaime Gilbert, Logan Crain, Nick Gosseen, and Jerrod Miller Belshaw Brothers Inc.

  2. Problem Statement • Silicon Boot that seals Cutter Head breaks after two weeks • Lubricant and silicon boot pieces drop into donut batter • Takes over two hours to replace boot with a new one

  3. Key Needs • Eliminate lubricant leaking into the donut batter • Design a boot that lasts longer • Keep same mounting points • Keep same plunger motion • Shorter boot replacement time

  4. Concepts • Boot redesign – longer lasting

  5. Concepts Trip Arm Redesign • Detachable • Machined Down

  6. Concepts • Cam Bearing Material Change • Slide Plate Redesign

  7. Final Design • FE analysis of boot Design • New design has 25% less stress First Choice Second Choice

  8. Boot Redesign – Comparative Stress Analysis Final Design 1st Choice – 100% 2nd Choice – 61% Original – 100%

  9. Final Design • Analysis of Detachable Trip Arm • New design is sufficiently strong • 31% of Yield Strength

  10. Final Design • Tested of Machined Trip Arms • Removed oil leak path • Small amount of oil sticks to Drip Plate • Use in conjunction with new Drip Plate design

  11. Final Design • Slotted Drip Plates • No real advantage • Use final design with machined Trip Arms • Removes remaining oil path

  12. Final Design • Tested Oil-impregnated bronze bearing • Max PV value-50,000 • Calculated PV value-812 • Test results • Steel Bearing ~ • Bronze Bearing ~

  13. Benchmarking • Eliminate lubricant leaking into the donut batter • Machined Trip Arms • Drip Plate Redesign • New Sleeve Bearing • Design a boot that lasts longer • New Design has 25% less stress • Keep same mounting points • Unchanged • Keep same plunger motion • Unchanged • Shorter boot replacement time • Detachable Trip Arms

  14. Acknowledgements • Belshaw Brothers Inc. • Michael Wierman – Project Sponsor • Laura Nash – Engineer • MME Industrial Design Clinic • Dr. Charles Pezeshki • Dr. Kip Findley • Dr. Mesarovic • Harish Radhakrishnan

  15. Questions

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