turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Navigation
- NX Design
- Forums
- Blogs
- Knowledge Bases
- Groups

- Siemens PLM Community
- NX Design
- NX Design Forum
- Relative length constraint in a sketch?

Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-23-2017 09:09 PM - edited 02-24-2017 09:37 AM

The sketch below needs one more constraint to be fully constrained. I could assign a dimension to "a" or "b", but what I'd rather do is set a relation between them (like a = 0.60*b). Is there any way to do that? I want to able to vary p1 (vertical height) and have all the sketch elements stay in the same proportion. Thanks for any help with this.

Labels:

5 REPLIES

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-24-2017 03:24 AM

Solving sketches with these direct equations is currently not possible.

Regards, **bleep**

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-24-2017 09:33 AM

You would have to figure out an equation / expression relating the length of (b OR a) to p1 (I'm assuming there's a typo in your original post when you said "p0" - as that is your angle expression).

Then set the length of (b OR a) to that expression.

Production:NX10.0.3.5 MP16/TC11.2

I'd rather be e-steamed than e-diseaseled

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-24-2017 09:41 AM

Try this, worked for me.

Overconstrain the sketch by adding constraints to Line A and Line B

Edit the constraint B to read whatever the p number of constraint A is * .6 e.g p3=p2*.6

Now convert constraint A to a reference constraint.

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-24-2017 09:45 AM

Nope, sorry that didn't work very well.

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

02-24-2017 09:51 AM

@Ken - yes, I could come up with a relation, or in this case add an angle dimension at the intersection point, to maintain proportionality between the segments. But I was mainly wondering is there was a way to specify that more directly. Also, you were right, p0 should have been p1 (which I fixed).

Thanks again!

Follow Siemens PLM Software

© 2018 Siemens Product Lifecycle Management Software Inc