Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Clinical test done (5/26/2020)
Final fidelity model parts ordered
Machining from DREWFAB
Motor controllers
Accomplishments from Previous Week
Clinical testing completed
Third iteration model WORKS much better
New design: snake
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Finish final model
Finish website
Test in clinic again
Finish report
Finish poster
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
In person: May 26, 2020
More freedom when moving
Middle joint is a little too tight
Ability to adjust spring pressure before locking the position
As of right now, the spring will not move from the resting position unless pushed against an object
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Zoom: May 21, 2020
do you have concern if too much torque will cause problems for the solenoid pin to remove or contract
adjusting parts to make it easier to manufacture
talk to tom for execution of machining
having gross machining done
it may pay us to simplify design
keep things 3 axis
challenge timeline for getting machine parts
appreciate learnings: should have done analysis first
pays to do paperwork
FBD on report/final presentation
a) cleaner assembly
why not use a simple solenoid
b) need some data
how do you plan on measuring
solenoid motor might not have enough holding force
how much force needed to pull the pin after applying force on a plate
static grab block with teeth instead of a gear and motor gets rid of issue of full rotation on solenoid.
think of rack and pinion: bury the grab block underneath the table
eliminates the challenge of friction
danger zones: gears have to be enclosed because they are hazards to the user
label pinch points
maybe consider not a solenoid, but a spring
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
The base currently is too weak, but it is much stronger than before
Looking to machine it
Machining cost + lead time might be much more than we anticipated
Resources or Information Required but not Available
N/A
Schedule
Final fidelity model CAD + assembly
Another clinical test?
Complete all deliverables (report, poster, website)
Budget (list amount spent and amount remaining)
Budget spent: $494.08
Budget remaining: $505.92
Progress on Report and Webpage
Webpage graphics updated
Report in progress with new data/graphics