Freecad Idomatic Method for Radial Cylindrical Cutouts
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
I know, that fillets are sensitve. So I set the fillet radius to 4.999 mm. And if I use an expression, should it work with different dimensions
- papyblaise
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
the radius will be limited to 4.9999mm if the precision is not enough (for the perfectionistics ), you do as in my last post:
a half horizontal piece which is higher than the XY plane, you make the radius of 5mm and a miror, the radius of 5 will be perfect
a half horizontal piece which is higher than the XY plane, you make the radius of 5mm and a miror, the radius of 5 will be perfect
Last edited by papyblaise on Mon Aug 02, 2021 9:23 am, edited 1 time in total.
Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
Hi Papyblaise,papyblaise wrote: ↑Mon Aug 02, 2021 6:31 amSee the solution of hpbmoIf someone can do without the Datum plane ...
I was going to offer you another one, but it's useless, it's up to you to invent one
Maybe useless, but this seems to me a very challenging modelling problem from which we can learn a lot in using Part Design WB and Part WB.
Your solution does indeed reproduce the original paper drawing. However, if I analyse your model I find a circular reference in the boolean operation that FC apparently cannot resolve:
I wonder how you were able to create it at all!
To avoid the circular loop, I propose to make a clone of the body before the boolean, turn the clone along x by 180 degrees, and fuse the two bodies. Like so: Best regards,
Roland, on
OS: Windows 10 Version 2009
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Last edited by Roland on Mon Aug 02, 2021 9:41 am, edited 1 time in total.
- Shalmeneser
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
I was asking if someone could, inside MY file, do without the Datum plane.
I need to rotate around the Z-axis by 45° (so Datum plane), then move front (enough) (so Sketch Attachment). Is it possible to do everything in the sketch Attachment ?
- papyblaise
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
I don't know, it worked perfectly without a magic wand, so I couldn't answer
- Shalmeneser
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
Your first pad is "2 lengths : 10 & 1" ???
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OS: Windows 10 (10.0)
Word size of FreeCAD: 64-bit
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
Sorry, I had set my precision to 2 decimals and didn't see the two lines. I was already slighty delighted, that OCC had improved the fillets.
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
It is indeed interesting and I still don't fully understand why the PartDesign Pattern needs the sketch to have an offset. Even manual setting of the Overlap property didn't help.
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- papyblaise
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Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
as I said, to be 1mm above XY to have enough material to make an R = 5Your first pad is "2 lengths : 10 & 1" ???
he ben alors you don't how do that ...I need to rotate around the Z-axis by 45° (so Datum plane)
you who give the impression of taking everyone back to do better
you just have to draw it on the XZ plane and turn it on its Z by 45 °
you just have to know that its Z is the Y of the general reference
each time you change the local plane, the Z of the sketch is perpendicular to the screen, which is not the same as in the general
it is thus in all the CAD that I know (tous les CAD le sont french jok)
green : mine , white : yours , you can see it's same result
- Attachments
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- flange3.PNG (29.48 KiB) Viewed 1081 times
Last edited by papyblaise on Mon Aug 02, 2021 10:59 am, edited 1 time in total.
Re: Freecad Idomatic Method for Radial Cylindrical Cutouts
Sort of:Shalmeneser wrote: ↑Mon Aug 02, 2021 9:23 amIs it possible to do everything in the sketch Attachment ?
- Attach the sketch with Mode FrenetTB to the 60° arc of Sketch
- To get 45° of these 60° we use the MapPath parameter with the factor 45/60 = 3/4
- Add an offset to z direction of 10mm
- Reverse the pocket
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- LordOfTheCB.FCStd
- (150.02 KiB) Downloaded 37 times
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