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PP-MP0281 Carriage pre-inserted with a 6mm bushing sleeve
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@jperry @tutley @sherylb
Would it be possible to get a quote to have the HD-BU0050 6mm bushing sleeve come pre-inserted into the part from the supplier? This would help cut down on prep time for our assemblers and reduce the chance of damaging the sleeves or the parts.

Event Timeline

oliver created this task.Aug 7 2019, 12:37 PM
oliver created this object with edit policy "LulzBot Hardware Products (Project)".
tutley added a subscriber: kim.Aug 7 2019, 12:43 PM

if igus is going to supply this part similar to the motor mount on quiver they can definitely install them. I think we should look into this
@kim would you mind getting a quote from igus on PP-MP0281

kim added a comment.Aug 7 2019, 1:54 PM

Tyler / All, We have procured PP-MP0281 from JMT, and not from igus. I spoke with Josh, igus has not quoted this carriage and we would need a more complete drawing that details the bushing inserted into the carriage to send to igus for consideration.
Please let us know.Thank you

tutley added a comment.Aug 7 2019, 1:58 PM

@kim the parts from JMT were initial parts to build alpha and beta units since JMT is a fast turn shop.
i would like to get a quote from igus on milling this part and installing the sleeve bushing.
they do this for us on the quiver motor mounts

kim added a comment.Aug 12 2019, 1:48 PM

sent drawing and requested quote from igus for milled part with bearing inserted.

DaniAO added a subscriber: DaniAO.Aug 26 2019, 7:34 AM

@kim do we have any updates from Igus on this one?

DaniAO assigned this task to kim.Aug 26 2019, 7:35 AM
tutley added a subscriber: adam.Aug 26 2019, 7:36 AM

@DaniAO i got a quote from them, i forwarded it to @kim and @adam

karrad added a subscriber: karrad.Sep 9 2019, 9:56 AM

@kim @adam Can either of you check to see if this was ordered?

adam added a comment.Sep 9 2019, 9:58 AM

Due to price savings, we elected to order the andonized part from one of our machining vendors and the raw bushing to press-fit ourselves. Each piece was ordered last week.

@adam Can you check to see if the BoM has been updated to reflect this? If so, I think we are good to close this one down.

adam added a comment.Sep 9 2019, 10:27 AM

I will verify and close when I know

adam added a comment.Sep 9 2019, 10:38 AM

OCA BoM is updated with PP-MP0281 and separate HD-BU0051 that we will press-fit ourselves.
@tutley I think we need the drawing for PP-MP0281 updated to no longer call out the press fit bushing in there.

adam reassigned this task from kim to tutley.Sep 9 2019, 10:38 AM
kent added a subscriber: kent.Sep 9 2019, 11:01 AM

Note for the maintainer:

Press fits are notoriously difficult from a DFM perspective. The tolerances required are tighter than most other joining methods, so be sure to check these and confirm that they are within the capability of the process.

kent added a comment.Sep 10 2019, 11:06 AM

Igus recommends a 7mm with H7 housing hole tolerance for the bushing. @tutley will you update the drawing to have this callout? When you are finished, please push it to the T9479 branch for review.

kent claimed this task.Sep 11 2019, 9:43 AM
kent moved this task from Backlog to Needs Review on the kangaroo-paw board.Sep 11 2019, 10:22 AM
kent reassigned this task from kent to tutley.

@tutley I went ahead and updated the drawing to reflect the manufacturer recommended tolerance on a housing hole tolerance. It is currently pushed to branch T9479. If it looks right, you can merge it in as far as I am concerned.

@kent merged with master

kent closed this task as Resolved.Sep 12 2019, 9:51 AM

cool thanks.