156B Week 7
Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Motor/brakes/shaft assembly to be analyzed and sourced by the end of the week
Full component design and analysis completed by Tuesday week 9
Finalized CAD by the end of week 8
BOM by the end of week 9
Fabrication planned for summer
Accomplishments from Previous Week
Counterweight assembly design complete
More concrete derivation of the equations of motion determined and written up in report by Nicholas.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Component design and sourcing:
Shaft + Bearings + Mating Components + Arm (Peter)
Counterweight Assembly + Counterweight Coupler (Labiba)
Swing Assembly + Experiment Mount (Nicholas)
Motor + Drive Components + Controller + Mount (Clara)
Brake + Mount (David)
Fill out BOM (ALL)
Final component design:
Finalized FEA
Hardware, All Purchased Components Represented in CAD
Assembly Drawings (Time Allowing on Detail)
Drawings for all Machined Parts
CAD animation
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
5/12/20 morning meeting:
Scope: clarified with sponsors that they do not expect us to actually purchase components (Erik)
Updates from last week:
Component selection is happening
Did some calculations about bearings and shaft size
Have a few options for motors, would like to find a few more
Had proof of concept presentation last week, plan for next three
Will potentially have other end users of centrifuge, specifically with a space camera project (Erik)
Would like us to look into cheaper options such as wood (Erik)
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
5/12/20 afternoon meeting:
Scope: clarified that we are not expected to actually build the machine ourselves and that manufacturing will be done over the summer
Need framework for maintenance (include in user manual) → Dr. Ghazinejad is concerned about possibly not being rated for long term use (recommended looking at 1 billion cycles for shaft analysis)
Budget - no definite number at this moment: provide sponsors with two options: “ideal” and “sufficient”
On concern with brake cost, was encouraged not to compromise on cost if it is for a legitimate safety concern (will see if brake is necessary for safe operation)
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
FMEA is main concern for next 2 weeks
Resources or Information Required but not Available
N/A
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
N/A
Progress on Report and Webpage
Webpage ~60% done