topic Re: 3d Sketch constraint?? in Inventor Forum

3d Sketch constraint??

sathishastin — Mon, 23 Oct 2017 08:22:37 GMT

how to constraint 3d sketch???

Re: 3d Sketch constraint??

Xun.Zhang — Mon, 23 Oct 2017 09:12:44 GMT

Hi,

It seem that most of linear lines are not parallel with the axis (with parallel constraint) and the start or end point is not add Coincident constraints.

So you can refer to the panel to add more constraints.

Re: 3d Sketch constraint??

MikeKovacik4928 — Mon, 23 Oct 2017 10:04:30 GMT

You constrain a 3d sketch in much the same way as a 2D sketch,

just the set of constraints is different

ie you are now constraining to axes and planes as well

If you want to ground it, use fix constraint on required point.

If you want to use it in a future assembly

constrain it in a relevant way to the orgin points, planes or axes,

so if you want to move it while you are in the middle of your design,

you can do it in a logical manner.

Michael Kovacik
.
Draughting/Designing (Manufacturing) (31 yrs)
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---(and recently Autocad/Inventor Customisation)
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(Impossible only means you haven't
found the solution yet)

Re: 3d Sketch constraint??

Vadim-the-Engineer — Mon, 23 Oct 2017 10:56:28 GMT

Hello! If Your sketch lines are not vertically/horizontally constrained - do that, but if they are - the reason that sketch is still underdefined (SW term?) is that sketch itself is not tethered to anything: just choose one of the corners or center of some line and coincident it with the center point.

Hope it helps. Good luck!

Re: 3d Sketch constraint??

JDMather — Mon, 23 Oct 2017 11:36:30 GMT

See attached.

Re: 3d Sketch constraint??

Vadim-the-Engineer — Mon, 23 Oct 2017 11:46:34 GMT

This is what I get from attached files... And the only option is "Edit derived part" which does nothing...

Re: 3d Sketch constraint??

JDMather — Mon, 23 Oct 2017 11:54:02 GMT

@Vadim-the-Engineer wrote:

This is what I get from attached files... And the only option is "Edit derived part" which does nothing...

You are using Inventor 2017.

The file that I attached was created using Inventor 2018.

Re: 3d Sketch constraint??

Vadim-the-Engineer — Mon, 23 Oct 2017 12:00:02 GMT

Yes, I am... There should be a tag to mark which Inventor version being discussed...

Re: 3d Sketch constraint??

sathishastin — Tue, 24 Oct 2017 03:35:05 GMT

Thanks for your shared knowledge to me...

Thanks for all quick response..

Sathish Kumar K

7373173065