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Design Project II: Velocity Measurement Mechanism

Design Project II: Velocity Measurement Mechanism. Section 10, Team 3: Caroline Suni , Clayton Dickerson, Alex Bedrin , and Donovan Killeen . Designed and built a prototype of a velocity measurement mechanism Installed directly into Xerox iGen4 Current mechanism is imprecise

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Design Project II: Velocity Measurement Mechanism

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  1. Design Project II:Velocity Measurement Mechanism Section 10, Team 3: Caroline Suni, Clayton Dickerson, Alex Bedrin, and Donovan Killeen

  2. Designed and built a prototype of a velocity measurement mechanism • Installed directly into Xerox iGen4 • Current mechanism is imprecise • Mechanism can measure velocity +/- 0.25% tolerance • Key points: • easy to install • maintenance • cost effective ABSTRACT

  3. Generated 5 unique designs for measuring velocity within the iGen4 • one design selected • Winning design implements the use of a roller, notch and sensor • Prototype, 3d models and working drawings were created PROCESS/INTRODUCTION

  4. Problem Statement • Current device yields rough estimates • Mission Statement • Design a device that measures velocity between 250 to 750 mm/s within a tolerance of +/- 0.25% • Design Specifications • Precise velocity • Cost effective • Easy manufacture, installation and maintenance • No impact on paper speed • Appropriate size DESIGN TASK

  5. GANTT CHART: DESIGN PROCESS

  6. Double motion sensor Roller notch sensor Rolling notch switch Single motion sensor Concept Generation Ultrasonic sensor

  7. Design Matrices

  8. Second Design Matrix

  9. Lasers are most accurate form of measurement • Most cost effective • Most efficient • Rotating notch best way to measure velocity of paper • Design much more accurate than current igen mechanism Trade Studies

  10. Utilizes dual set of frictionless rollers • Located after drive roll • Spin according to speed of paper • Notch connected to rod breaks plane of laser • Occurs on each pass of the notch/roller system • Program measures average rotations per second and derive the velocity of the paper Best Design Selected

  11. PROTOTYPE

  12. prototype

  13. Velocity Roller Solidworks models Prototype

  14. Working Mechanism: • Printer begins print cycle • Laser activates • Paper is fed into printer and cycle begins • Paper passes velocity measuring mechanism, and spins a “frictionless” roller • Notch on the end of the roller breaks the plane of the sensor as the paper spins it • Sensor measures time intervals of the notch rotating around the cylinder exactly once • Program divides this time by known circumference of rotating notch • … yielding an accurate average speed ENGINEERING ANALYSIS

  15. Total Cost : $326.34 Cost based on estimations with help from: -Mcmaster-carr (http://mcmaster.com) -Rubber Crumb, Recycled Rubber (http://www.tirerecyclingcrumbrubbershredder.com) Cost Analysis

  16. Cost Effective • Easy Maintenance • Compact Size, only 1.5 x 1.75 x 3.25 inches • Easy to Manufacture • Easy to install • Accurate Design Features

  17. Decreasing the diameter of the rod holding the notch • More rotations = more accurate • Closer estimation of rotations SUGGESTIONS

  18. Team 3 designed and built a prototype of a system that measures the velocity of paper in the igen 4 • Velocity information used to make adjustments in the printing path • Less errors with image recognition CONCLUSIONS

  19. Xerox • Xinli Wu • Our TA, Bill • Full Xerox igen 4 demo: http://www.youtube.com/watch?v=R6HBoQTPhdU ACKNOWLEDGEMENTS & REFERENCES

  20. Questions? Thank you for watching our presentation

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