156A Week 10

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

• • Have meeting with CEO on Tuesday, Dec 3 at 5pm in Carlsbad

  • Will talk to engineers about design specifications and manufacturing

Accomplishments from Previous Week

• • Multiple possible designs to use for prototypes

Goals for Next Week (list names after each item). Use specific and measurable objectives.

• • Go into machine shop and cut up current golf bag

    • Make simple prototype

  • Make simple latch system to prototype

    • 3D printing?

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• • Go to sports store and look at golf bag designs

  • Have list of questions to ask CEO during meeting

  • Continue brainstorming possible prototypes

-Sponsor said motor etc is too much for golf bag, too expensive, extreme

-Sponsor says bag only needs to be folded one time during shipping

            -only need to be done once, now only assembly

            -look at Ikea for easy assembly

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Figure out who will be focusing on each individual component analysis

  • Make prototype soon, fail early and fail often

-explaining one design, adding retraction function to handle

            -move retracting mechanism to top so you can change size to be much smaller

-figure out what shipping methods they use to see what’s cost-benefit

-build miniature prototypes, difficult to assess

-variable mechanical advantage, more complex than a tripod, keep in 1 degree of freedom

-know which design decisions dictate rest of decisions.

-kinematic synthesis.

-Know final position

-beginning position could be different

-ie. tent poles, bungee cords inside legs so they snap into place

-how much does it cost to have a customer support line? How much it cost for return

            -test on other student, have instructions

-individual: materials (research alternatives, steel, aluminum, anodized etc) CES

-folding mechanism

-handle/lever mechanism (cantilever), find amount of force pushing down to see how  much it pushes out

-spring mechanism?

-Injection molding? (relief angles etc)

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

Risks and Areas of Concern

• • too many degrees of freedom could cause problems

  • make sure legs do not buckle

Resources or Information Required but not Available

• • Still have not received specs, will talk to engineers about this during meeting

  • Sponsor has not gotten back to us about info on what shipping company they use

Schedule

• • Create first prototype in machine shop this week

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • None spent

  • $3000 remaining

Progress on Report and Webpage