pad and revolve the same sketch

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yelnif
Posts: 2
Joined: Tue Mar 28, 2017 9:26 pm

pad and revolve the same sketch

Post by yelnif »

Hello,
I’m wondering what would be the best approach to both pad and revolve a sketch, resulting in a solid which is straight for some length, then has a bend, then proceeds straight again?

I created my sketch from within Part Design, and then revolved it 60 degrees. I then attempted to select either of the faces of the resulting solid so that I could pad them, but could not figure out how to do this.

It is of course entirely possible that I’m taking the wrong approach … I’m new to all this.

Many thanks,
Richard

OS: Ubuntu 16.04.2 LTS
Word size of OS: 64-bit
Word size of FreeCAD: 64-bit
Version: 0.16.6707 (Git)
Build type: None
Branch: releases/FreeCAD-0-16
Hash: 5465bc47c95db45e0be85dc0e2872419efadce0f
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17
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molding.fcstd
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DeepSOIC
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Posts: 7896
Joined: Fri Aug 29, 2014 12:45 am
Location: used to be Saint-Petersburg, Russia

Re: pad and revolve the same sketch

Post by DeepSOIC »

Hi!
The easiest way to achieve it is to use Part Sweep.
Padding and revolving a single sketch twice is impossible within 0.16's PartDesign. But you can do it with Part Revolve and Part Extrude.

PartDesign in v0.17 allows you to revolve/extrude an arbitrary face, effectively letting you to extrude/revolve a sketch twice. It also allows to re-use the sketch for another Pad/revolve directly, and it also has sweep!
yelnif
Posts: 2
Joined: Tue Mar 28, 2017 9:26 pm

Re: pad and revolve the same sketch

Post by yelnif »

Thank you! I've managed to get some basic XY plane shapes to sweep along a path created as a sketch in the XZ plane. I'll definitely need to get a better handle on the workbenches and their appropriate use ...
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bejant
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Joined: Thu Jul 11, 2013 3:06 pm

Re: pad and revolve the same sketch

Post by bejant »

I agree that Part WB > Sweep is probably best for what you want to do, but using 0.16 you could also select a face of Revolution, and then use the Draft WB > Trim / Extend tool:
Image
to extrude the face:
20170329b.png
20170329b.png (16.73 KiB) Viewed 811 times
20170329c.png
20170329c.png (10.76 KiB) Viewed 811 times
20170329b-016-molding.fcstd
(31.44 KiB) Downloaded 12 times
The resulting Extrusion is still separate from Revolution, so you'd have to use the Part WB > Boolean Union tool:
Image
to make a Fusion of them.

OS: Ubuntu 16.04.2 LTS
Word size of OS: 32-bit
Word size of FreeCAD: 32-bit
Version: 0.16.6707 (Git)
Build type: None
Branch: releases/FreeCAD-0-16
Hash: 5465bc47c95db45e0be85dc0e2872419efadce0f
Python version: 2.7.12
Qt version: 4.8.7
Coin version: 4.0.0a
OCC version: 6.8.0.oce-0.17
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