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

Concepts Boot redesign – longer lasting

Trip Arm Redesign Detachable Machined Down Concepts

Cam Bearing Material Change Slide Plate Redesign Concepts

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

Questions