Constraint not working?

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xt550
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Joined: Sun Apr 11, 2021 11:21 am

Constraint not working?

Post by xt550 »

Hello.
Im a newbie on cad and dont know much about it.
Im trying to do a sketch to revolve to make a thingie to use on a ballbering. my problem is that it doesent seam to "turn green"
and i cant see it to revolve it
fcad4.JPG
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fcad2.JPG
fcad2.JPG (147.41 KiB) Viewed 1725 times
fcad3.JPG
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wheel.FCStd
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Shalmeneser
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Re: contrain not working?

Post by Shalmeneser »

Blue lines are useless outside the sketch.
You need to transform all lines from blue to white : Sketcher_ToggleConstruction
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wheel_SHALM.FCStd
(5.71 KiB) Downloaded 18 times
xt550
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Re: contrain not working?

Post by xt550 »

ok after i fiddled abit i got it!!
Dident get that u where supposed to mark the lines before i did the Sketcher "ToggleConstruction" and "finish editing".

Thank you for your help!
xt550
Posts: 12
Joined: Sun Apr 11, 2021 11:21 am

Re: contrain not working?

Post by xt550 »

i messed up again.
the sketch is green and 100% constrained, i can see it part design workb.
i added a piece to the sketch and when i try to revolve it gone again and now i get "TopoDS::Face" what does this mean?
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Shalmeneser
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Re: contrain not working?

Post by Shalmeneser »

No file !
xt550
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Re: contrain not working?

Post by xt550 »

sorry
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wheel2.FCStd
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heron
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Re: contrain not working?

Post by heron »

Shape in sketch must be close and no overlapping lines.
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wheel2.FCStd
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GeneFC
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Re: contrain not working?

Post by GeneFC »

xt550 wrote: Sat Sep 25, 2021 8:58 pm the sketch is green and 100% constrained, i can see it part design workb.
i added a piece to the sketch and when i try to revolve it gone again and now i get "TopoDS::Face" what does this mean?
There is almost no connection between fully constrained and usable for a given purpose.

For example, a sketch consisting of nothing but two straight lines can be fully constrained (green) but cannot be padded or revolved.

On the other hand a closed shape with no constraints other than coincident corners can work perfectly for pads or revolves.

The bottom line is that the sketch must follow certain rules for further use, constrained or not. If not, you will see errors like TopoDS.

If you want further help you need to post your FCStd file.

[OK, I see you have now posted your file.]

Gene
xt550
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[SOLVED]Re: contrain not working?

Post by xt550 »

Thank you all for the help!










(By the way if your bored and like rock try to search for bandmaid on youtube)
drmacro
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Re: contrain not working?

Post by drmacro »

Could we get the OP or moderator to fix the typo in the subject of this thread?

I have no idea what a contrain is, and I'm sure the search engines will have a field day... :lol:
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
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