P-TET-000023 Tetra valve main body - Design Updates

tetrabiodistributed / project-tetra

A ventilator splitter with flow control and monitoring for use as a last resort solution in emergencies.

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P-TET-000023 Tetra valve main body - Design Updates #100

Open mechatroniks-git opened 4 years ago

mechatroniks-git commented 4 years ago

[x] Method to constrain nuts did not prevent them from spinning during assembly
[ ] 22M port is not ISO-5356 compliant
[x] Add embossed part number to model
[x] DFA - Remove extra one way valve nub if not needed to avoid assembly confusion
[x] DFAM - Darryl had recommendations for changes

cyunis commented 4 years ago

Video showing failure to constrain nut from 7/20: 20200720_173240.mp4.zip

mmroden commented 4 years ago

Time estimate: 2 days + 2 days revision

jgrano commented 4 years ago

@mechatroniks-git 22M port is not ISO-5356 compliant same issue as on the shutoff valve.

Unit is split up and no longer going to have some of the same manufacturing issues.

jgrano commented 4 years ago

https://github.com/tetrabiodistributed/project-tetra/blob/master/02_Development/Prototype_release/Alpha/Parts_to_print/P-TET-000023-1.stl - Normal

Burhan-Q commented 4 years ago

As of today. @DHHwangPhD printed part P-TET-000028 and at present is curing. Will deliver to @mechatroniks-git as soon as possible

Burhan-Q commented 4 years ago

@mechatroniks-git if you could review P-TET-000028 (this is the version with the outlet steps) when you have a chance for the ISO fittings, I can export the STL to @DHHwangPhD for test printing once I get the green light from you

Burhan-Q commented 4 years ago

Tetra valve female coupler (P-TET-000028 version) located in Tetra Valve Fusion folder

Opening diameter = 22.4mm Length = 21mm (minimum spec) End taper diameter = 21.8mm Taper angle ~ 1.637 deg [full]

Did not remove sharp edge as I'm unsure if it will be an issue. Added fillets to aid transition regions

mechatroniks-git commented 4 years ago

@Burhan-Q Opening diameter is 22.37, not 22.40 Taper is 1.43deg = atan(1/40), not 1.637deg Here is ISO Spec: https://www.iso.org/obp/ui#iso:std:iso:5356:-1:ed-4:v1:en

mechatroniks-git commented 4 years ago

On this one, the taper is too short. The diameter at 15mm is correct (22.37mm), so need to extend the taper back another 6.5mm

Also, fillet this edge so it's not sharp

mechatroniks-git commented 4 years ago

taper angle is wrong

mechatroniks-git commented 4 years ago

Nuts are 7mm nominal, measuring 6.9mm, and the opening is 7.5mm, I'd reduce it to 7.1mm

Burhan-Q commented 4 years ago

Tetra valve updates. Not sure how to redo outlet valve as single part without breaking geometry.

mechatroniks-git commented 4 years ago

@Burhan-Q P-TET-000028 tweaked & reviewed, ready for test print.

Burhan-Q commented 4 years ago

@DHHwangPhD ready for print testing. Please comment when you've started printing.

P-TET-000028-1.zip

Judoguy12 commented 4 years ago

@jgrano Can you check if the heat inserts and oring's are added to the tetra valve bit, as they are not showing up in the animation, Jamie

Burhan-Q commented 4 years ago

@jgrano Can you check if the heat inserts and oring's are added to the tetra valve bit, as they are not showing up in the animation, Jamie

@Judoguy12 worst case you can check out the parts list here, find the correct size parts, and then add them into the model.

Judoguy12 commented 4 years ago

Do you have an idea of what o-ring it is on the middle part?

Burhan-Q commented 4 years ago

Do you have an idea of what o-ring it is on the middle part?

@Judoguy12 I looked at the model (A-TET-001030-0), and seems like it has an o-ring in it, PN V-MCM-9262K525

Judoguy12 commented 3 years ago

@mechatroniks-git I believed this is solved, the worked fine for my assembly