×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

create axis (reference element) on 3D hole

create axis (reference element) on 3D hole

create axis (reference element) on 3D hole

(OP)
In Autodesk inventor, you can create work axes on appropriate solid geometry (cylindrical face). I am having trouble with this in CATIA.

What I am trying to do is make two components' holes coincident in a product. One of the components was generated from .STP and the holes are not recognized in CATIA to have a center (they are made of 4 arc surfaces). I would like to create an axis feature (line reference element) in the former component so I can continue constraining.

The problem is, CATIA has no way of creating an axis just by selecting a cylindrical face.
How do I go about doing this?

I have managed to create a point, and then separately create a line off of it. Is there no easier way?

Nick

Light structural commercial aircraft parts
APM Consortium Inc.
Cambridge Ontario, Canada

RE: create axis (reference element) on 3D hole

This is a common problem in most CAD systems when importing geometry from non-native formats. It happened all the time when importing .CATparts into UG/NX. My usual solution is to use isoparametric curves because they will work even if the cylinder end is not square to the axis. Just create an isoparametric curve at 0% and 100% V and then create points at the midpoint of those two curves. This will give you points at the absolute limits of the cylinder and you can then create an axis through those points. I'm pretty sure that you are looking for a less laborious method so hopefully someone else will have some input also.

CATIA V5 R20
PC-DMIS 2011 MR1

RE: create axis (reference element) on 3D hole

(OP)
I was hoping that I was just overlooking a certain snap setting somewhere. I want to "infer" arc centers like in NX. I'll survive for now just creating a point on the arc center and making a line normal to the adjacent surface.

Nick

Light structural commercial aircraft parts
APM Consortium Inc.
Cambridge Ontario, Canada

RE: create axis (reference element) on 3D hole

To constrain components quickly in a CATProduct, I'm using Snap command, without creating any aditional elements . May be it will work also for you.

Regards
Fernando

https://picasaweb.google.com/102257836106335725208

RE: create axis (reference element) on 3D hole

Hi norkamus,

If I understand well, you want to create an axis of a hole so that later it can be used to constrain that part.

In Generative Shape Design workbench, there is a feature for creating an axis (just look at the toolbar with the line on it). If that shouldn't work, try extracting the surfaces and then create the axis.

Best of luck!

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources