156B Week 5

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

• • CAD for Ball Holder has been completed

  • Gear Train system still being converted to friction drive system 

  • Tests to calibrate CNC machine has not begun. 

  • Software for CNC has not begun.

  • Proof of concept of manually buffing the balls has been completed. 

Accomplishments from Previous Week

• • Proof of concept of manually buffing balls has been completed.

  • CAD for ball holder has been completed. 

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

• • Complete Friction Drive design for gear system and begin construction (Jacen & Rohan)

  • Set up software of the CNC machine (Marshall)

  • Begin construction of Ball Holder (Aaron)

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

• • Hardware should be completed by week 8 to allow for tests (in person: 5/3/19)

    • 24 balls are needed to determine effectiveness of buffing system

  • Buffing System efficacy is based on certain tolerance of the dimple depth from the tube height (in person: 5/3/19)

  • Aerodynamic testing of golf ball is not feasible at this stage due to the fact that Callaway cannot produce a control group of golf balls (in person: 5/3/19)

  • Do not use water or soap when buffing out golf balls because it may affect golf ball paint later on (5/3/19)

  • Grabber system not feasible due to the lead time (in person: 5/6/19)

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

• • Ian Richardson (in person: 4/30/19)

    • EDM not feasible due to the long lead time 

    • Attempt to buff out with the plastic end bits 

    • 3D print end bits later on. 

  • Professor Ghazinejad (4/30/19)

    • Get original dimensions of flash

      • Progress: Talked to Sponsor and they are talking to legal team what information can be released 

    • Provide a good proposal to Sponsor

      • Progress: Will present project to Callaway June 7th

  • James Lynch (4/30/19)

    • Use load cell to determine when end bit touches dimple

      • Progress: ball holder now designed with laod cell 

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

• • N/A

Risks and Areas of Concern

• • Friction drive system may not work

    • May need to manually rotate golf ball or go to one probe approach

Resources or Information Required but not Available

• • N/A

Schedule

• • Milestone: 

    • Finish hardware this week 

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent: $286.43

  • Remaining: $9,713.57

Progress on Report and Webpage

• • First Draft of report completed