This is an announcement / discussion thread for a new PR for the Helix Feature.
https://github.com/FreeCAD/FreeCAD/pull/4590
In this PR I want to add a new input mode to Helix. "Height-Turns-Growth". Motivation for this is that another PR by Chris_G that allows Helices and spirals to be created with the same underlying command.
With this functionality the Helix tool is a perfect generalization of the revolution tool. And can be used to make as well revolutions, helices and flat spirals.
Demo:
PartDesign Helix. Generalisation to Spiral (and Revolution)
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- Posts: 529
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Re: PartDesign Helix. Generalisation to Spiral (and Revolution)
Would it be possible to add a additional sketches as input for properties.
I have a example:
i want create a spring of thread with diameter 2 mm. the fist two windings are tight than(line 2mm from axis and 4 mm long) i grows linear till a spacing of 10 mm(so 10 mm off axis). then it stay for some time 10 and then graduatly decrease till the 2 mm off axis.
i have create a visual representation of what i meant I understant it is more dificult to program... for me it is fine if it becomes a second PR
Off course the same can be dont for the diamter etc
I have a example:
i want create a spring of thread with diameter 2 mm. the fist two windings are tight than(line 2mm from axis and 4 mm long) i grows linear till a spacing of 10 mm(so 10 mm off axis). then it stay for some time 10 and then graduatly decrease till the 2 mm off axis.
i have create a visual representation of what i meant I understant it is more dificult to program... for me it is fine if it becomes a second PR
Off course the same can be dont for the diamter etc
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- Posts: 529
- Joined: Fri Sep 18, 2020 5:40 pm
Re: PartDesign Helix. Generalisation to Spiral (and Revolution)
I see, instead of a specifying cone angle you want to define a kind of guide rail. I guess we would need another rail for varying the pitch as well.
I like the idea. But it will not happen for this PR.
Re: PartDesign Helix. Generalisation to Spiral (and Revolution)
That's what i hoped for
I expected that