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Datum tag in generic part (family table)

sundoopi
5-Regular Member

Datum tag in generic part (family table)

Hello everyone,

I used family table to create two parts. In the generic part datum A was created on a plane. But this plane (feature) is suppressed in the instance part, so one error occored. But the change and this datum A is needed in the instance part. Could you please tell me how to do it with MBD? Thanks in advance.

Br

Sun

1 ACCEPTED SOLUTION

Accepted Solutions

Well, I "faked it" by attaching the datum tag to a surface:

Generic:

pausob_0-1653455822648.png

instance:

pausob_1-1653455871174.png

This construction fill surface was then hidden away.  You should also add some relations so it follows the relevant feature sizes.

View solution in original post

9 REPLIES 9
tbraxton
21-Topaz I
(To:sundoopi)

The Creo error with the annotation is resolved in this model for the generic and the instance. The annotation plane A is present in the instance without error.I have questions  about documenting a plane on a part that can not be established on the part for inspection but I suppose that is a separate issue.

========================================
Involute Development, LLC
Consulting Engineers
Specialists in Creo Parametric

You have to redefine the plane you are using for Datum A so it is not suppressed in the instance. This kind of thing happens a lot with section views, etc. You have to be careful when defining features to avoid using references that will be suppressed in instances from a family table. Check your references and replace them.

tbraxton
21-Topaz I
(To:sundoopi)

This would be an option to establish a datum reference plane in the context of your family table.

 

tbraxton_0-1653394037512.png

 

========================================
Involute Development, LLC
Consulting Engineers
Specialists in Creo Parametric
sundoopi
5-Regular Member
(To:tbraxton)

Hello  tbraxton,

yes, you are right. But this option is not suitable for our part. 

But thanks too.

Br

Sun

Patriot_1776
22-Sapphire I
(To:sundoopi)

This is one of the MANY reasons why I do not use MBD at ALL, and put ALL my GD&T info on the dwg.  This way I can easily change anything I want, and not affect anything else.  Also, this eliminates having problems with duplicate datum names at both the part and assembly level (as for a weldment, etc.).

@sundoopi , are you trying to accomplish this:

generic:

pausob_0-1653451389240.png

instance:

pausob_1-1653451507197.png

 

 

 

sundoopi
5-Regular Member
(To:pausob)

yes!

Well, I "faked it" by attaching the datum tag to a surface:

Generic:

pausob_0-1653455822648.png

instance:

pausob_1-1653455871174.png

This construction fill surface was then hidden away.  You should also add some relations so it follows the relevant feature sizes.

sundoopi
5-Regular Member
(To:sundoopi)

Hello all,

thanks for your answers. It looks, that we have to trick the message center with a "faked datum plane".

I found in Creo 6 or higher versions we can have a besser solution: 

(952) Improved Handling Between Parent and Child for Annotations in Model-Based Definition | Creo 6....

 

Best regards

Sun

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