Modeling Challenge

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Kunda1
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Modeling Challenge

Post by Kunda1 »

Anyone wanna try modeling this monstrosity ? :lol:

phpBB [video]


ref: https://twitter.com/TatsuyaBot/status/1 ... 2919006208
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ThanklessLiving
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Re: Modeling Challenge

Post by ThanklessLiving »

nope
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obelisk79
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Re: Modeling Challenge

Post by obelisk79 »

@Kunda1 does this apparatus any real-world applications?
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alex_55
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Re: Modeling Challenge

Post by alex_55 »

phpBB [video]


Linkstage3, PartDesign, Assembly3, animated with a macro.

Code: Select all

# -*- coding: utf-8 -*-
import FreeCAD
import Part
import time
time.sleep(2)
doc = FreeCAD.ActiveDocument
theConstraints = [
	doc.getObject('Constraint005'),
	doc.getObject('Constraint007'),
	doc.getObject('Constraint009')
]
for i in range(359):
  for c in theConstraints:
    c.Angle += 1
  doc.recompute()
  Gui.runCommand('asm3CmdSolve',0)
  Gui.updateGui()
  #time.sleep(0.05)
Gui.runCommand('asm3CmdSolve',0)
Gui.updateGui()
Attachments
triple_u_joint_thing.FCStd
(410.03 KiB) Downloaded 36 times
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bambuko
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Re: Modeling Challenge

Post by bambuko »

alex_55 wrote: Sat Jun 03, 2023 6:42 pm
Linkstage3, PartDesign, Assembly3, animated with a macro.

Excellent :o
Thank you
I am using Link branch and Assembly3
you can also download ... and try it here
excellent Assembly3 tutorials here
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Kunda1
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Re: Modeling Challenge

Post by Kunda1 »

Bravo @alex_55 !!

@obelisk79 of course not, lol
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obelisk79
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Re: Modeling Challenge

Post by obelisk79 »

I didn't think so. But sometimes I get surprised :)
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Re: Modeling Challenge

Post by app4soft »

alex_55 wrote: Sat Jun 03, 2023 6:42 pm
Linkstage3, PartDesign, Assembly3, animated with a macro.
As LinkStage3/Assembly3 in part is based on SolveSpace solver, here is same design made with SolveSpace (animated with "Analyze > Step Dimesnion..."):

phpBB [video]


SolveSpace-file & instruction available here: https://www.patreon.com/posts/85092911
obelisk79 wrote: Fri Jun 02, 2023 8:09 pm @Kunda1 does this apparatus any real-world applications?
@obelisk79, in a real world such mechanism would be fully constrained to being lock in its initial state (if each pair of yokes on U-pipe would be connected with elastic shaft).

On all animations above (including on my) there are just *some tricks* used where start and end of this U-joints loop are not constrained to each other with the same rotation speed.
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