Tracking Antenna Revival
- Smile Khatri
- Agapa Goombs
- Sohee Yoon
- Justin Liu
Big Project | Project | Project Manager |
|---|---|---|
Tracking Antenna |
|
|
Task Description
Our tracking antenna is currently in an unusable state as it is disassembled, missing servos, and has loose physical connections. This task entails investigating which components on the tracking antenna need to be remade, remaking the parts (may involve machining), and finally, assembling the tracking antenna. This must be done by end of term.
All servo motors and gears should be in WARG bay, if they aren’t in there please notify us.
This is a good opportunity to learn about design for manufacturability and assembly by studying an existing design and providing inputs to improve it.
Ask any machining and logistical questions to @Smile Khatri
Constraints
Constraints | Written By | Append Date |
|---|---|---|
All bolt holes must be aligned during mounting. M4 screws must not be used in M5 bolt holes. | @Smile Khatri | July 17, 2024 |
|
|
|
Relevant Contacts
Subteam | Contact | Contact Description |
|---|---|---|
Subteam collaborating with | @ of contact | what is the contact responsible for? |
Assignees
Assignee | Asana Task | Date |
|---|---|---|
@Sohee Yoon @Justin Liu | link to asana task assigned | Date assigned |
Task Progression/Updates
Author: @Sohee Yoon Date: 2024-08-07
@Justin Liu updated the spacer rod to be about 9 mm - shaved off 4.5mm
Antenna Holders: Inner hexagon cut-out is 0.2 mm smaller (to fit the bar better) and added 2 mm fillet because the actually bar has curved edges too (image below)
Upper Base Plate: Designed it 30 mm longer on one side because of the large mount (extra row) and M6 holes are 3 mm closer
Concerned if it will be unbalanced
Author: @Smile Khatri Date: 2024-08-11
@Nathan Green 's ideas:
Proper solution to prevent the pitch of the antenna’s going below level (horizontal)
currently, a white 3D printed chip is taped to a gear. Is there something else that could be done?
Heat set inserts can be pushed in from the inner face of the antenna holders rather than the outside.
trying to push the heatset this way might be sketchy since the tip of the soldering rod won’t be aligned with the direction that the heatset is pushed in.
Or maybe, push the heatset in really deep
Hold off on this for now… - Smile
Author: @Justin Liu Aug 14, 2024
Ideas on new pitch angle limiter:
(TBH, I don’t see much of a problem with the chip taped on the gear right now. )
Didn’t put too much thought into this but may be feasible, see idea image below.
Alternatively, I can also look into adding two limit switches to the assembly that’ll be pressed by a lever after the some degree of rotation. Though that might make the software team go nuts because they'll have to program stop motor drive when the switch is pressed.
Please let me know your thoughts on these.
Author: @Sohee Yoon Sep 19, 2024
New update needed - Right now, the way the tracking antenna’s base plate is attached to the motor is kind of unstable and wobbly. We want someway to prevent the wobbling and have the base plate level (e.g., not at an angle). The base plate rotates with the motor, so the stabilizers/stands shouldn’t cause any friction. You can attach the stands to the plate below the base plate. Lmk if you have any questions!
Starting ideas
Maybe use a ball bearing to prevent any friction
Length of the stands should be long enough to prevent any wobbling