Design Fundamentals Using Advanced Computer Technology by sjw10519

VIEWS: 11 PAGES: 19

									Design Fundamentals
  Using Advanced
Computer Technology
  The Penny Harvest Cart
            The Problem
  Our Client: Common Cents and the Penny Harvest



The Harvest Cart must serve two main purposes:

   1. It must act as a central collection point,
      display,and transport for each school’s pennies.
   2. It must serve Common Cents’ expansion plans
      and complement Common Cents’ marketing
      efforts.
Functional Requirements
       of the Cart
• Reusable over several years
• Capable of being stored easily when not in
  use
• Easy to move around the school
• Safe for children to be around
• Secure to prevent theft
• Easy to load and unload pennies
• Able to hold weight of pennies
• Transparent to display the coins
• Consistent with Common Cents branding
• Cost efficient
Objective Tree
            Design Constraints
                   and
             Problem Solving

•Budget is limited, therefore materials and
processes have to maximize cost efficiency.
•Design must serve a dual purpose, balancing
functionality and image.
•The form of the jar is uniquely complex,
therefore the efficiency of its fabrication requires
careful consideration.
•The weight of the pennies is substantial,
therefore the lifting mechanism must have the
capacity to lift it and and must prevent injury.
 Major Tasks Performed
• Initial Stage:
 -Met team and identified design topic
 -Brainstormed ideas for cart design
 -Performed background research on
 materials and components
 -Met clients
 Major Tasks Performed
Development Stage:
-Refined ideas to meet client needs

-Continued research

     ~Calculations and Measurements

     ~Contact with Companies

     ~School Visit
-Kept in contact with client
 Major Tasks Performed
• Final Stage:
 -Developed written report of project for
 client
 -Developed deliverables
 -Prepared video documentation of project
 experience
                                Gantt Chart: Penny Harvest Cart




                                            05

                                                   05


                                                             5

                                                                   05


                                                                          03 5

                                                                          03 5

                                                                          03 5

                                                                          03 5

                                                                          04 5

                                                                          04 5

                                                                          04 5

                                                                          04 5

                                                                                  05
                                                          /0




                                                                                /0

                                                                                  0

                                                                                  0

                                                                                  0

                                                                                  0

                                                                                  0

                                                                                 0

                                                                                  0
                                          1/

                                                 7/




                                                                 1/




                                                                               7/

                                                                               4/

                                                                               1/

                                                                               8/

                                                                               4/

                                                                               1/

                                                                               8/

                                                                               5/
                                                           4




                                                                         8
                                          /3

                                                /0

                                                        /1

                                                                /2

                                                                      /2

                                                                            /0

                                                                            /1

                                                                            /2

                                                                            /2

                                                                            /0

                                                                            /1

                                                                            /1

                                                                            /2
                                         01

                                               02

                                                     02

                                                               02

                                                                     02
                 Identify design topic
                         Form Team

             Brainstorm Design Ideas

           Prepare for Client Meeting

               Background Research

             Understand client needs

            Reconsider Design Ideas
          Research Cart Components

           Prepare Midterm Proposal

            Develop Detailed Design

              Evaluate/Refine Design

                Prepare Final Design

              Prepare Written Report
Develop Presentation and Deliverables

           Rehearse for Presentation

                    Video Collection

           Edit Video for Sumbission

                                                                          Completed   Remaining
         Team Process and Skill
             Development

•Evolution of Individual Roles

•Cohesion as a Team

•Development of Trust

•Scheduling and Communication

•Time Management

•Effective use of Resources and Research
The Design
     • Transparent Lexan
       glass jar on a steel
       cart
     • Jar – “milk bottle”,
       top portion can be
       opened, funnel at
       top, lock
     • Steel cart – rubber
       bumpers, caster
       heels, foot brakes,
       steel handle
Sketch: for Dumping
    Mechanism
          Cost Breakdown
$52.50- Fabrication of Lexan jar, including materials,
tooling, and labor costs
$40.00- Wheels/casters, both locking and non-locking

$24.70- Sheet and Tubular Steel

$25.00- Hand brake
$2.00- Cost of Lifting and Dumping Mechanism




Therefore, assuming steel fabrication costs of $50 (2.5
times the cost of the steel) the cart would still be under
budget at approximately   $194.20 per cart.
                 Alternative Solutions
• The Cart Design
  A shopping cart design fufilled functional requirements but did not
  meet aesthetic demands.


• Lifting and Dumping Mechanism
  A conveyor belt would effectively transfer the pennies but the
  mechanism would require too much space and time.


  A hydraulic system could also lift the jar, but it would be too
  expensive.


  A gravity feed out of the bottom of the cart would be efficient, but
  finding a jack to lift the cart the required height would be very
  difficult.


• Brakes
  Handle brakes, such as those found on airport Smartecarts are ideal,
  but are too expensive due to patents.
           Continuity Plan
• Primary goal: construct a prototype.


• Utilize and expand on our contacts with
  manufacturers and fabricators


• Ensure that the cart meets the needs of schools
  as much as it meets the needs of Common Cents


• Determine if 750 pounds can be moved by one or
  two people without motor assistance
Conclusion
& Questions

								
To top