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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 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 • Mechanism can measure velocity +/- 0.25% tolerance • Key points: • easy to install • maintenance • cost effective ABSTRACT
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
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
GANTT CHART: DESIGN PROCESS
Double motion sensor Roller notch sensor Rolling notch switch Single motion sensor Concept Generation Ultrasonic sensor
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
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
Velocity Roller Solidworks models Prototype
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
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
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
Decreasing the diameter of the rod holding the notch • More rotations = more accurate • Closer estimation of rotations SUGGESTIONS
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
Xerox • Xinli Wu • Our TA, Bill • Full Xerox igen 4 demo: http://www.youtube.com/watch?v=R6HBoQTPhdU ACKNOWLEDGEMENTS & REFERENCES
Questions? Thank you for watching our presentation