156B Week 6

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

• • CNC machine software has been calibrated. 

  • Friction drive system design still needs to be completed. 

    • Issues with finding the correct ball-bearing size

    • Rotating Stage is being considered now as a viable option, 

  • Tests on buffing have been performed. 

    • Just axial buffing has proven to not very effective because need to be at exact right pressure to remove flash and not damage center of dimple

    • Bits have been redesigned to hopefully avoid this issue. 

Accomplishments from Previous Week

• • Ball Holder has been 3D printed.

    • Will need to incorporate load cell eventually.  

  • New bits have been designed and 3d printed

    • need to be tested

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

• • Increase height of CNC in order to provide more clearance (Rohan)

  • Finish design and complete fabrication of friction drive (Jacen)

  • Incorporate Load Cell into ball holder (Aaron)

  • Order rotating stage and perform tests with new bits (Marshall)

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

• • Sponsor ordered load cell (email: 3/10)

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

• • Professor Ghazinejad  (in person: 5/7/19)

    • Consider finding a load cell that is design to measure small weight 

  • James Lynch 

    • Helped with finding options for load cells (email: 5/8/19)

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

• • Will friction drive work?

  • Will newly designed bits solve issues of altering center of flash?

  • Will rotating stage be a viable backup option?

Resources or Information Required but not Available

• • n/a

Schedule

• • Finish fabrication of system and begin testing. 

  • 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 has been completed.