Bed centered cam mount for taz 6 ???

A forum dedicated to the stock LulzBot TAZ 3D Printer
kcchen_00
Posts: 1705
Joined: Thu Feb 19, 2015 12:42 am

Re: Bed centered cam mount for taz 6 ???

Post by kcchen_00 » Fri Jun 02, 2017 8:23 pm

nuroo wrote:
v12b just barely miss's the big screw shown above as a reference. So v14d needs to have 1mm or -0.5 less height then v12b
v14d maybe wider
v14d extender farther away from bed.
v14d clamp part that hugs the bed, make it longer under the bed too
Alright try this.

- 5mm wider on each side
- mount 10mm further from the actual bed
- clamp portion lengthened
- lower portion shaved by 1mm.
Attachments
TAZ5 RPi_Cam_GoPro_v14.stl
(458.65 KiB) Downloaded 43 times

nuroo
Posts: 150
Joined: Mon Apr 10, 2017 2:08 pm

Re: Bed centered cam mount for taz 6 ???

Post by nuroo » Sat Jun 03, 2017 2:21 pm

Thanks so much for continuing to refine this design.

Looked in Cura at all three iterations side by side. I can tell you v14 will be too tall on the bottom to fit past that big screw. v12b barely fit.
But I can test v14 to see if it can support the camera's weight and to see if the print head pass's without hitting the mount.

v12 just barely pass's the screw:
20170601_131258.jpg
v13c will not fit pass the screw
20170602_081131.jpg
v15's height needs to be lesser in height pass the clamp section then v12(-.5m). v13 and v14 are too tall to clear the screw pictured above.


Printing v14 now. Cura is showing about 3 hours print time. I will report back.

kcchen_00
Posts: 1705
Joined: Thu Feb 19, 2015 12:42 am

Re: Bed centered cam mount for taz 6 ???

Post by kcchen_00 » Sat Jun 03, 2017 4:18 pm

Ok. Reduced the bottom thickness back by 5mm. If that clears and the arm needs stiffening, we can increase the thickness of the top...
Attachments
TAZ5 RPi_Cam_GoPro_v14B.stl
(460.78 KiB) Downloaded 44 times

kcchen_00
Posts: 1705
Joined: Thu Feb 19, 2015 12:42 am

Re: Bed centered cam mount for taz 6 ???

Post by kcchen_00 » Sat Jun 03, 2017 5:33 pm

Just re-read your post... this file has a thicker bottom for rigidity. Hopefully it clears the center screw.
Attachments
TAZ5 RPi_Cam_GoPro_v14C.stl
(459.31 KiB) Downloaded 34 times

nuroo
Posts: 150
Joined: Mon Apr 10, 2017 2:08 pm

Re: Bed centered cam mount for taz 6 ???

Post by nuroo » Sat Jun 03, 2017 9:36 pm

v14c:
clears screw.jpg
clears big screw :D





clamp on  bed 14b.jpg
The clamp seems like its splits when I push it in. May need to be a slightly larger gap. Hope the photo shows this. (I need to print with supports to help the over hang. I do my best to clear supports away but take that into account)
hot bed to metal sheet gap 4.85mm
metal sheet thickness 3.26mm - 3.28mm





print head clearance 14b.jpg
We are close to, but still a chance print head can hit cam mount as it passes on by. I'm not sure if when I simulate an auto bed level routine if I have the print head as high or low as an actual bed level routine. If its lower, the print head will definitely still hit. But you'd want more clearance in any case to feel safest.

nuroo
Posts: 150
Joined: Mon Apr 10, 2017 2:08 pm

Re: Bed centered cam mount for taz 6 ???

Post by nuroo » Sun Jun 04, 2017 7:36 am

v14c
Distance from front of cam mount swivel head to back of clamp ~ 41mm
length.jpg
Needs to be no less then 60mm

kcchen_00
Posts: 1705
Joined: Thu Feb 19, 2015 12:42 am

Re: Bed centered cam mount for taz 6 ???

Post by kcchen_00 » Sun Jun 04, 2017 1:31 pm

Ok. Hopefully this is it.

- Increased aluminum plate clamp to 3.3mm
- Add 20mm from bed to swivel (60mm total)
- Rounded edges for aesthetics.
Attachments
TAZ5 RPi_Cam_GoPro_v15.stl
(496.77 KiB) Downloaded 41 times

nuroo
Posts: 150
Joined: Mon Apr 10, 2017 2:08 pm

Re: Bed centered cam mount for taz 6 ???

Post by nuroo » Mon Jun 05, 2017 11:02 am

Thanks so much for all your continued work. Honestly if you want to stop at this point the bed mount is usable. The swivel mount clears the print head. I'm very grateful you took the time to work on it. Timelapse of some parts I printed for the wife below using your mount.
https://youtu.be/il3jh6K34PY



If you'd like to tweak farther:
The height of mount overall changed, v15 no longer clears screw. Pic's of the v14 next to v15.
height difference2.jpg
height difference1.jpg



Since I cant really clear out the support material needed to print overhang of clamp, it needs to be bigger - still splitting.
(Let me try changing the print orientation so the overhang is vertical)
clamp split2.jpg
clamp split1.jpg
**Not enough plastic on main mount body to leverage screw against swivel head body.

nuroo
Posts: 150
Joined: Mon Apr 10, 2017 2:08 pm

Re: Bed centered cam mount for taz 6 ???

Post by nuroo » Mon Jun 05, 2017 7:41 pm

v15 printed vertically2.jpg
v15 printed vertically.jpg
Calipers = 2.72mm
Feeler Gauge = 2.75mm
Probably my printers tolerance is off. This was printed vertically so no support was needed to print clamp section.

kcchen_00
Posts: 1705
Joined: Thu Feb 19, 2015 12:42 am

Re: Bed centered cam mount for taz 6 ???

Post by kcchen_00 » Mon Jun 05, 2017 8:17 pm

Here you go... not sure if I made the bottom thin enough to clear that center screw...
- Increased aluminum bed gap to 3.5mm
- Added a cut-out to insert a M3 Hex to give the swivel set screw some bite.

Its got to be close. :-)
Attachments
TAZ5 RPi_Cam_GoPro_v15b.stl
(514.5 KiB) Downloaded 44 times

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