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Detailed Design

Table of Contents 1 Progress Summary 2 Adaptability 3 Engineering Analysis 4 Bill of Materials (BOM) 5 CAD Package 6 Assembly Plan 7 Test Plan 8 Manufacturing Plan 9 Maintenance Manual 10 Risk Management 11 Table of Contents

Please follow the link for a collection of our Detailed Design Documents.

Progress Summary

At the start of Phase III, team P15007 developed a project specific list of deliverables for Week 15. Below are the expected and actualized progress percentages for Week 15 for each deliverable.

Adaptability

APPROVED PROJECT SCOPE: Team P15007 Anti-rollback device will be adaptable to the following Breezy Manual Wheelchair parents models:

• Breezy Model Spec Summary

The following photos reflect relevant aspects of the Quick Release models that have been taken into consideration when determining scope.

Engineering Analysis

• Loading Scenarios PDF

• Analysis Excel Sheet

• Ratchet Tooth Analysis
• The Figure above shows the maximum loading scenario (41.4 lbf) applied to the face of the tooth. This assumes only 1 Pawl is engaged and shows the system will not fail nor yield.
• Subject Matter Expert Consulted: Dr. DeBartolo

• Control Analysis

Bill of Materials (BOM)

CAD Package

• CAD
• Subject Matter Expert Consulted: Professor Leipold - Advanced Modeling Constraints
• Subject Matter Expert Consulted: John Bonzo - Manufacturability
• Subject Matter Expert Consulted: Rob Kraynik - Manufacturability

Assembly Plan

• Assembly Plan

Test Plan

• Test Plan (In Progress)

• Test Procedures (In Progress)

Manufacturing Plan

Scaled Up Manufacturing Plan

• INTRODUCTION
• BILL OF MATERIALS
• PARTS LIST
• ROUTE SHEETS
• FISH BONE ASSEMBLY DIAGRAM
• OPERATIONS PROCESS CHART
• SOURCING - RAW MATERIAL
• SOURCING - PARTS

Maintenance Manual

Installation and Maintenance Manual

• INTRODUCTION
• INSTALLATION
• MAINTENANCE
  • Brakes
  • Dowels
  • Ratchet and Pawl Mechanism

Risk Management

CUSTOMER INPUT REQUIRED:

1. WEIGHT: With design completed and materials assigned, Creo estimates total system weight to be approximately 12 lbs.
   Proposal: Engineering Requirement No. 7: Total System Weight Ideal Value 11 lbs Marginal Value 13 lbs
   Conclusion: System weight reduced to be under 8 lbs total. Customer has signed off on change.
2. BUDGET: Currently, system design is over budget by $20. This includes roughly estimated shipping costs.
   Proposal: With more funds, we have the opportunity to conduct destructive testing and design a quick release shaft. If interested, we can create a budget and proposal over inter-session for the beginning of MSD II. However, according to current budget estimates, we are requesting up to $50 additional funds to cover shipping costs.
   Conclusion: Budget has been extended to $450 to cover shipping costs.
3. WHEELCHAIR FUNCTIONALITY: The current shaft design does not support Quick-Release function, although it can adapt to the quick-release wheelchairs.
   Proposal: We have identified three options: (1) Additional funds support wheel retention redesign to support function (2) Accept lost functionality of quick-release function (3) Reduce other costly functions i.e. locking brake handles and push/pull cables.
   Conclusion: Wheelchair quick-release function can be retained in scaled-up manufacturing plan. Thus, it does not need to be included in the prototype, but rather should be explained in the manufacturing plan.

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Table of Contents

Introduction	Phase I	Phase II	Phase III - V
Team Values and Norms Meeting Minutes Photo Gallery	Problem Definition Project Summary Project Deliverables Use Scenario Requirements Constraints Concerns Action Items Problem Definition Review	Systems Design Functional Decomposition Benchmarking Concept Development Systems Architecture Feasibility Risk Assessment Systems Design Review	Detailed Design Progress Summary Adaptability Engineering Analysis BOM CAD Package Assembly Plan Test Plan Manufacturing Plan Maintenance Manual Risk Management Week 9 Project Plan Week 12 Project Plan MSD I Gate Review

MSD II
MSD II Project Plan MSD Final Deliverables CAD Package Bill of Materials Assembly Plan Test Plan Test Results Manufacturing Plan Maintenance Manual Poster Technical Paper