design & production of an all – terrain wheelchair
DESCRIPTION
DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR. Andrew Baigrie Connor Henley Jeff Lance Miguel Tovar September 29th, 2005. Overview. Personnel Introductions Product Background Benchmarking Qualifying Design Specification Customer Attributes QFD Project schedule. - PowerPoint PPT PresentationTRANSCRIPT
DESIGN & PRODUCTION OF AN ALL – TERRAIN WHEELCHAIR
Andrew BaigrieConnor Henley Jeff LanceMiguel Tovar
September 29th, 2005
Overview
Personnel Introductions
Product Background
Benchmarking
Qualifying Design Specification
Customer Attributes
QFD
Project schedule
Team Introductions
Andrew Baigrie Hometown: Plymouth, MI Role: Finance Director
- Builder/Test Engineer
Jeff Lance Hometown: Birmingham, MI Role: Design Engineer
- Builder/Test Engineer
- Team Secretary
Connor Henley Hometown: Casper, WY Role: Team Liaison
- Team Editor
- Builder/Test Engineer
Miguel Tovar Hometown: Brighton, MI Role: Design Engineer
- Builder/Test Engineer
Product Background
Product Complaints Difficult to navigate over
branches, mud, and general obstacles encountered on an off-road trail.
Current 5th wheel has poor mobility
Excessive ride harshness when off-road
Wheels difficult to maintain and use when dirty
Difficult to climb hills in a forward position Modified Invacare A-4
Benchmarking
Competitive Quickie XTR
Lateral Four-wheelers
Quantifying Design Specifications
Benchmarking Results Force Required to Move Chair: 12 lbs
Weight: 35 lbs
Wheel Base: 38 in.
Wheel Track: 18 in.
Mountain Bike Suspension Travel: 2 in.
Customer Attributes
Front and Back
5th Wheel
Rotate like Castor
Larger, not castor size
Castor Style 5th Wheel TurningEasily traverse bumps/uneven terrain
Suspension
5th Wheel
Maneuverability
Off Road Capabilities
Primary Secondary Tertiary
Easy to move forward/backward
QFD
Highest Ratio of Improvement
5th Wheel Modifications
General suspension
Recumbent Seat
Project Schedule
Major Milestones Prototype Due: Nov. 23 Build Time: 3+ weeks Design Freeze: Oct. 21
- Analysis Complete: Oct. 21
- Preliminary Design: Oct. 14