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sensor mount printed part has build up
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The printed part sensor mount has some built up filament where the sensor board sits. It is causing the sensor board to sit crooked and the magnetic wheel to rub against the hall effect sensor.
The purposed solution is to add a little channel where the plastic build up is happening to create a clean "break" between where the sensor mounts and the mass of the senor mount part

Event Timeline

west created this task.Feb 19 2019, 1:36 PM
west moved this task from Report Issues Here to Beta Sprint (2019/01/28) on the Quiver board.
oliver added a subscriber: oliver.Feb 26 2019, 11:58 AM

There have been 2 tickets created dealing with the critical dimensions for sensor mount and decoder wheel.

T5873 Decoder wheel & T5874 sensor mount

west added a comment.Feb 26 2019, 12:03 PM

the graph for the filament sensor reads that the target value is 10.5, Currently the value is 10. Correct me if im reading the graph wrong though

@west @oliver the measurement I took off those parts was not off of the critical height of the part, my apologies, it was off of the same back part of the piece.

I think the data chart was used generating based off the 10mm but ultimately need the board to sit further from the magnetic wheel which would be the 5mm part.

@west The upper and lower control limits were chosen what was failing on a filament sensor

@west I am pushing some concept changes to this branch for the bearing mount and sensor mount that I think will help with this issue. The adjustments were made using blender; however, initial testing has been successful for ensuring consistency between the circuit and encoder wheel without contact between the two. Let me know what you think.

west added a comment.Mar 5 2019, 11:23 AM

@EricNugent what changes were made? is it v1.3?

@west should be v1.4_inserts-removed and the bearing mount absorbed that parts inserts.

west added a comment.Mar 5 2019, 11:40 AM

@EricNugent do you worry about the bearing mount breaking?

@west it is possible, but the geometry modifications will strengthen the bearing mount and prevent the bearing holders from bending towards one another. Some of the benefits include getting rid of problematic overhangs on the bearing mount itself, we can likely flip the orientation of the sensor mount and increase the layer height to speed up print time as well.

west added a comment.Mar 6 2019, 2:11 PM

I pushed changes that you recommended. If this gets apporved, the insert drawings will need to change - we will need to remove PP-IS0080 because there wont be any inserts in that part, and we would need to create a new drawing that would show inserts for the bearing holder. The bom would need to be updated to show the insert changes and parts to be re-weighed

Sounds good, I will get the slices working and drop off a couple for you to test. I think we can change most of those things pretty quick in this branch and push it to master once everything looks good.

west added a comment.Mar 11 2019, 7:10 AM

@EricNugent have you had a chance to test these changes out?

@west seems to work pretty good from the 5 I have tested. The Alpha circuit boards had some issues changing the pin state but the updated red dot circuit boards we are using on beta units appear to be working fine.

west added a comment.Mar 11 2019, 8:08 AM

@EricNugent sounds good. @dani can we get a pn made for bearing mount with inserts? BoM 1X pp-gp0418 4x HD-MS0030

BoM changes-
Remove PP-IS0080 from bom
Add - PP-IS00--

New part number is PP-IS0114 and the bom has been added.

This has been updated in AS-PR0144 and pushed to the repo.

@west anything else needed before we move this to needs to be reviewed?

west added a comment.Mar 12 2019, 2:53 PM

@DaniAO I just need to add the pn to the drawing and push to the branch

kent closed this task as Resolved.Mar 20 2019, 10:51 AM

Merged to master.

EricNugent reopened this task as Open.Mar 26 2019, 1:54 PM

@MikeR This has the information that will need to be implemented into the ohai

The OHAI thermal instructions have been updated.

MikeR added a comment.Mar 26 2019, 4:21 PM

Ohai-kit has been updated with the new parts and part numbers. Closing for now, re-open if new changes are needed.

MikeR closed this task as Resolved.Mar 26 2019, 4:22 PM