Additive SWEEP issue

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GenFi
Posts: 17
Joined: Mon Oct 17, 2022 6:07 pm

Additive SWEEP issue

Post by GenFi »

Good morning everyone I'm trying to get a sweep between these two circular sections.The problem is that I can't define it between the edges, which are not symmetrical !!!! Some suggestions???

Thank you

OS: Windows 10 Version 2009
Word size of FreeCAD: 64-bit
Version: 0.20.2.29603 (Git)
Build type: Release
Branch: releases/FreeCAD-0-20
Hash: 930dd9a76203a3260b1e6256c70c1c3cad8c5cb8
Python 3.8.10, Qt 5.15.2, Coin 4.0.1, Vtk 8.2.0, OCC 7.6.3
Locale: Italian/Italy (it_IT)
Installed mods:
* CurvedShapes 1.0.4
* Curves 0.6.9
* freecad.gears 1.0.0
Attachments
schizzo .FCStd
(14.9 KiB) Downloaded 15 times
es_1_2.png
es_1_2.png (10.59 KiB) Viewed 1277 times
es_1.png
es_1.png (30.6 KiB) Viewed 1277 times
Piero69
Posts: 473
Joined: Thu Jul 04, 2019 1:22 pm
Location: Parma - Italy

Re: Additive SWEEP issue

Post by Piero69 »

you need a feature (or better an option) that FC doesn't have: a loft guided by paths

i discussed this feature request here:

viewtopic.php?t=76467&start=20

the best outcome is by surface modelling:

1) you have to design 1/4 of object
2) mirror it 4 time around the axis
3) join the 4 surfaces into an only one
4) make the closing flat surfaces (the upper and lower ones)
5) join the 3 surfaces into an only one
6) solidify it

but you have another limitation the tools to create the surfaces (fill boundary curves) accepts only 4 edges, so the sketch with more than one entity (a line and an arc for example) is not valid so you can't use it. the other tool (fills) that accepts more edges creates unfortunately incorrect surfaces
Last edited by Piero69 on Mon May 29, 2023 11:05 am, edited 1 time in total.
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NewJoker
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Posts: 3018
Joined: Sun Oct 11, 2020 7:49 pm

Re: Additive SWEEP issue

Post by NewJoker »

Piero69 wrote: Mon May 29, 2023 10:46 am you need a feature (or better an option) that FC doesn't have: a loft guided by paths
Indeed. But there should be some workaround. Maybe the multisection option in PartDesign AdditivePipe ?
drmacro
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Posts: 8867
Joined: Sun Mar 02, 2014 4:35 pm

Re: Additive SWEEP issue

Post by drmacro »

Possible options...??

Curves workbench Pipe shell.

Curved shapes workbench Curved Path Array.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Piero69
Posts: 473
Joined: Thu Jul 04, 2019 1:22 pm
Location: Parma - Italy

Re: Additive SWEEP issue

Post by Piero69 »

@NewJoker @drmacro

unfortunately no of them gives the wished outcome. you need the ability to manage how a section turn into another one/s you following the guided paths. this ability is still missing in FC, i tried with solidworks and you make such work in a moment
GenFi
Posts: 17
Joined: Mon Oct 17, 2022 6:07 pm

Re: Additive SWEEP issue

Post by GenFi »

Thank you all. I also tried with Curved shapes workbench Curved Path Array, but to no avail. Yes I know, with SW and CATIA are functions that are obtained in a click, but the fact that you can not do in Freecad very disappointing, we are not talking about spatial modeling.

:geek:
Piero69
Posts: 473
Joined: Thu Jul 04, 2019 1:22 pm
Location: Parma - Italy

Re: Additive SWEEP issue

Post by Piero69 »

yes ...

currently we have only the hope that this feature request can be implemented and doesn't fall on deaf ears
GeneFC
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Posts: 5373
Joined: Sat Mar 19, 2016 3:36 pm
Location: Punta Gorda, FL

Re: Additive SWEEP issue

Post by GeneFC »

I think you can do a lot better with a little bit of work.

Capture.JPG
Capture.JPG (18.32 KiB) Viewed 1070 times

Add more sections and play with the various parameters. The image is a very quick sample.

(You file construction technique is a complete mess, but that is a different topic. :mrgreen: )

Gene
drmacro
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Posts: 8867
Joined: Sun Mar 02, 2014 4:35 pm

Re: Additive SWEEP issue

Post by drmacro »

The construction is not too bad with Gordon surf's...

(I got rid of the distracting Datum planes as well...)

But, I've been told it can't be done in Curves or Surfaces workbenches. :mrgreen:
Attachments
Screenshot_20230529_093749.png
Screenshot_20230529_093749.png (73.58 KiB) Viewed 1055 times
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
drmacro
Veteran
Posts: 8867
Joined: Sun Mar 02, 2014 4:35 pm

Re: Additive SWEEP issue

Post by drmacro »

And done with Surfaces workbench by master @Vincent B :o

viewtopic.php?p=684948#p684948
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
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