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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 - PowerPoint PPT Presentation
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Belshaw Brothers Inc.
By:Nathan Klosterman, Isaac Sprague,
Jaime Gilbert, Logan Crain, Nick Gosseen, and Jerrod Miller
• 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
Problem Statement
• 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
Key Needs
• FE analysis of boot Design
• New design has 25% less stress
Final Design
First Choice
Second Choice
Boot Redesign – Comparative Stress Analysis
Final Design
Original – 100% 1st Choice – 100% 2nd Choice – 61%
• Analysis of Detachable Trip Arm
• New design is sufficiently strong 31% of Yield Strength
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
Final Design
• Slotted Drip Plates No real advantage
• Use final design with machined Trip Arms
• Removes remaining oil path
Final Design
• Tested Oil-impregnated bronze bearing
• Max PV value-50,000 Calculated PV value-
812
• Test results Steel Bearing ~ Bronze Bearing ~
Final Design
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
• Belshaw Brothers Inc. Michael Wierman – Project Sponsor Laura Nash – Engineer
• MME Industrial Design Clinic Dr. Charles Pezeshki Dr. Kip Findley
• Dr. Mesarovic Harish Radhakrishnan
Acknowledgements