p09203 rp1 motor module gen 2
DESCRIPTION
P09203 RP1 Motor Module Gen 2. P09203 – 1kg Ro b otic Motor Module Gen 2 Platform This project is Sponsored by the Kate Gleason Foundation. Team Members: Lauren Farnsworth → Team Lead, DFMA, Process Design Expert Mike Egan → Chief Engineer - PowerPoint PPT PresentationTRANSCRIPT
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P09203RP1 MOTOR MODULE
GEN 2
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P09203 – 1kg Robotic Motor Module Gen 2 Platform This project is Sponsored by the Kate Gleason Foundation.
Team Members:
Lauren Farnsworth → Team Lead, DFMA, Process Design Expert
Mike Egan → Chief Engineer Matt Missel → Design Engineer, Machining &
Assembly Expert Greg Leaper → Systems Analyst and Website
Administrator
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Project Description Provide a product line of off-the-shelf motor modules and platforms
for diverse applications Scalable, modular, robust wheeled platform to carry payloads of 1kg
mass Module should be fully compatible with team P09204 Open architecture, Open source development Target audience is educational and outreach programs
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Customer Needs
Robust Modular (High-tech
Lego) Infinite effective
motion High overall system
efficiency
Open source and open architecture
Thorough documentation
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Design Rationale
Customer needs Identify what the customer really wants
Specifications Translate customer needs into engineering specifications
Concept generation Sketch approximately 20 concepts which have the
potential to meet customer needs and specifications Concept selection
Weight pros, cons, and risks of each concept Detailed design
Design Evolution
Initial Concept Final Design
ManufacturingUpper Housing
Solidworks Model Extruded FormBlueprint
Cut “Extrusion” Finished PartCNC Machined
ManufacturingLower Housing
Solidworks Model Blueprint Mastercam Toolpaths
4-Axis Machining Center Part in 4th Axis Finished Part
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Specifications and Testing
Specifications Testing Pass/Fail Criteria TestOperation speed of the motor module Speed is within 0.5 and 1 m/s
Ground clearance ------Steerable angle Steering angle is within ± 90° Module Turning test
System efficiency Drive and Steering efficiency is over 60% Drive Module Efficiency Steer Module Efficiency
Open source ------Open architecture ------
Low production cost ------ ---Prototype and development cost Under $1000 ---
Drive distance error Encoder error less than 6”Motors driven by PWM signal ------
Module must attach to platform within 10 – 120s
Methods of attaching motor module ------Platform must remain completely
functional after a 1 – 2ft fallDrop test
Motor Torque
Motor module attachment time
Velocity Test
Drop Test
Motor TorqueMust produce a stall torque of 40oz-in to 60oz-in
Module Assembly
Module Attachment Time
Motor Encoder Test
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Cost Breakdown
Prototype and Test Total Cost (3 MM, 1 IM)
Estimated Idler Unit Cost (Lot of 1 IM) $150.42
$811.95
Estimated Motor Unit Cost (Lot of 1 MM) $303.36
Estimated Motor Cost (Lot of 1000 MM) $148.33
Robotic Platform (2 MM & 2 IM) $567.85
RP1 MM Gen 1 Unit cost $404.70
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Estimated Molding Cost (lower Housing)
Current Material Unit Cost $8.03
Estimated Molding Material Unit Cost $0.13
Estimated Molding Process Unit Cost $0.47
Estimated Molding Tooling Unit Cost $0.41
Estimated Molding Total Unit Cost $1.01
Lot of 20000, 2 cavities per mold, Nylon
http://kazmer.uml.edu/Software/JavaCost/index.htm
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Future Design & Recommendations Further simplify lower housing Improve turn table design Make the lower housing a plastic part Make the upper housing an extruded part Order Motors earlier Verify vendor information
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QUESTIONS???