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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
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P09203 – 1kg Robotic Motor Module Gen 2 PlatformThis 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
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
Customer Needs • Robust • Modular (High-tech Lego) • Infinite effective motion • High overall system efficiency • Open source and open architecture • Thorough documentation
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
Manufacturing Upper Housing Solidworks Model Blueprint Extruded Form Cut “Extrusion” CNC Machined Finished Part
Manufacturing Lower Housing Solidworks Model Blueprint Mastercam Toolpaths Part in 4th Axis 4-Axis Machining Center Finished Part
Cost Breakdown Prototype and Test Total Cost (3 MM, 1 IM) $811.95 Estimated Idler Unit Cost (Lot of 1 IM) $150.42 Estimated Motor Unit Cost (Lot of 1 MM) $303.36 Robotic Platform (2 MM & 2 IM) $567.85 Estimated Motor Cost (Lot of 1000 MM) $148.33 RP1 MM Gen 1 Unit cost $404.70
Estimated Molding Cost (lower Housing) Current Material Unit Cost $8.03 Lot of 20000, 2 cavities per mold, Nylon 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 http://kazmer.uml.edu/Software/JavaCost/index.htm
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