ME 4182: Team Purple Cobras

Week 3 Deliverables

Problem Statement/Design Partition/Project Plan/Task Assignments

Andrew Ogden

Nick Fila

Greg Freisinger

Tracy Jenkins

Nate Smiga

ME 4182: Team Purple Cobras

OverviewProblem Statement

(Nate)Design Partition

(Nick)Task Assignments

(Tracy)Project Plan

(Greg)

ME 4182: Team Purple Cobras

Project Selected : Cane Claw

3 Pt Stable Aid

Single Pt Stable Aid

Stability : indicated by a high polar moment of inertia about the center of the contact pattern

ME 4182: Team Purple Cobras

Problem Statement (Abridged)

To provide a stable walking aid for those with limited mobility and flexibility while enhancing their ability to

pick up, or reach objects

Intended Market

ElderlyHip replacement PatientsKnee Replacement Patients

Specifications Rigid and StableLightweight Able to hold 25 lbforce

Sensitive to Fragile ObjectsUseable as Cane when holding

Objects

ME 4182: Team Purple Cobras

Design Partition Design of the motion activator.

Options:1) Button2) Hand Pump3) Lever

Design of the force to transfer motion to claws.Options:1) Pneumatic force2) Spring force3) Cable tension

Design of the joints of the claws.Options:1) Riveted joints2) Bolt joints3) Track system

Design of the force system to hold claws closed.Options:1) Pre-loaded spring force2) Spring force3) Lever system

ME 4182: Team Purple Cobras

Project PlanDate 17-May 24-May 31-May 7-Jun 14-Jun 21-Jun 28-Jun 5-Jul 12-Jul 19-Jul 26-Jul

Task/Deliverables Assigned toTeam Selection All XWebsite Nick X X X X X X X X X X XProject Bids All X XProject Selection All X XProblem Statement Nate X XDesign Partition Nick X XProject Plan Tracy X XTask Assignments Greg X XConceptual Designs All X X XPatent/Product Search All X XSelection Analysis All X XConcept Selection All X XDesign Path Chosen All X XMid-Term Presentation Andrew X XPost Mid-Term Review All X X XLayout Drawings Nick X X XEngineering Analysis Andrew X XPart Drawings Andrew X X XPrototype Review Nate X X X XPeer Evaluations All X XDisplay Greg X XFinal Turn-in Checklist Tracy X XFinal Presentation Andrew X XFinal Report All X X

WORK IN PROGRESSDUE

ME 4182: Team Purple Cobras

Task AssignmentsAndrew Ogden – Team Leader/Coordinator Greg Freisinger - Mechanical Systems

Responsible for: Responsible for:Subtask division for completion of weekly tasks Stress and Strain Analysis of ComponentsCoordination of tasks and schedule Midterm Mock upWeekly presentation creation Prototype validation and TestingFatigue failure analysis

Nate Smiga – Mechanical Systems Responsible for:

Stress and Strain analysis of componentsMidterm Mock up

End of term Prototype

Nick Fila – Webmaster/Kinematics Tracy Jenkins – Materials/ManufacturingResponsible for: Responsible for:

Design of springs and levers. Design of springs and leversInvestigation of abilities of end user Verification of Component AccuracyComponent Sourcing Visual Aid CreationWebsite design and upkeep Material Selection Prototype validation and Testing Manufacturing feasibility

ME 4182: Team Purple Cobras

Questions?