Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Assembling motor-spool 3D-printed prototype (Andrew)
Accomplishments from Previous Week
Printed out and lasercammed the rack and ratchet parts (Kevin)
Printed out all the parts of the motor design (enclosures, spool, motor-to-spool shaft) (Andrew)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Interfacing the motors with an Arduino, obtain current spike levels for 136:1 and 700:1 motors (William)
Integrate motor-spool prototype together with mount bracket in preparation for dead rabbit implantation test (Andrew)
Decide on specific O-ring AS size (e.g. size 12 from AS568), material, and CAD gland (Andrew)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Requirement of implantable actuator should take precedence over external actuator mechanism, although the latter is acceptable if it is truly impossible to engineer an internal one (in person, 1/23)
Action - comment noted
Both types of actuation (rack/pinion & motor-spool) should have physical prototypes - rack/pinion in order to fully flesh out the mechanism despite complexity, and motor-spool b/c of promise (in person, 1/23)
Action - Kevin & Andrew proceeded to order all parts needed and print/lasercam their SLDPRTs
Dead rabbit will be available for a test implantation on 2/5. Would be nice to have physical to-scale prototypes ready to test out by then (in person, 1/23)
Action - all prototype parts finished printing this week, will be assembled by 1/30 or 1/31, in time to test out with electronics/Arduino
If not ready, print mock up of largest possible configuration of device for size comparison and see any potential interferences
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
For motor-spool assembly - Parker is O-ring king w/ guidebook - consider O-ring installation over spool as opposed to fit into enclosure (1/22, in person)
Action - Parker O-ring handbook consulted. Reasonable AS568 size found. CAD and material selection still underway, priority was to get prototype v1.0 out the door first so v1.1 will have the O-ring glands and O-rings
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
Risks and Areas of Concern
Micro-size parts for motor-spool assembly are printable and machinable, but may make hand assembly a little difficult despite DFM (e.g. press fit would have to be careful not to snap anything)
Need to come up with version control and standard part numbering/naming system - right now CAD repository is getting a little messy
Resources or Information Required but not Available
Schedule
Describe upcoming milestone
Update Gantt chart.
Budget (list amount spent and amount remaining)
$79.07 Spent
$1420.93 Remaining
Progress on Report and Webpage
Updated Budget
Updated Final Report rough draft