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tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
December 6, 2024
Solved

Modify the number of significant figures for a dimension used in a table pattern

  • December 6, 2024
  • 3 replies
  • 1213 views

Creo 7

Does anyone know how to edit the # of significant figures for a rotation direction dimension used in a table pattern? I created an axis pattern and then converted it to a table pattern to vary some dims including the clocking angle use to place pattern members. The ROT_DIR_1 dimension is a known dimension (angle) defined in the sketch of the pattern leader feature. Once this pattern is converted to table driven, I am not able to select that dimension to alter the number of decimal places.

 

I am able to use the find tool to locate this dimension but when selected no actions are available to edit/change it in any way.

 

tbraxton_0-1733510577807.png

 

tbraxton_1-1733510702040.png

 

 

 

Best answer by tbraxton

PTC R&D has confirmed that the conversion to a table-driven pattern means that the dimension in question cannot have its significant figures changed in the table editor. It is working to specification according to them.

 

Two workarounds have been delivered by PTC support.

 

  1. Delete the table pattern and recreate the pattern (axis). With an axis pattern it is possible to modify the angle offset dimension to change the # of significant figures. Then convert it to a table pattern only after the significant figures are as required. This works. However, if you have an existing model with this situation, you may be facing a lot of work to resolve feature failures when deleting the pattern for the workaround.
  2. Add a 3D annotation note and include the dimension "&D123" where D123 is the dimension of interest. You can then through the UI modify the # of decimal places in the annotation note and this will update the value in the table pattern to match. 

tbraxton_0-1733939154423.png

 

 

 

3 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAuthor
22-Sapphire II
December 6, 2024

PTC documentation (not readily found BTW) indicates that this dimension is not selectable for modification in the Creo UI outside of Pro/Table and this is working to specification. I would accept this if one can edit the # of sig figs in Pro/Table editor but that is not working either. With no way to change this other than to delete the pattern and change the dim properties before patterning, I would consider that a deficiency in the functionality and a "bug".

 

Is there some technique in Pro/Table to change the sig figs? Just typing in more to the right of decimal and saving the table does nothing, upon editing the table after this attempt it shows only one decimal place for this dimension.

 

This is an explanation from PTC development on how things are specified to function when converting pattern type to table driven.

 

The ROT_DIR dimension (id 22) in the model is an angular spacing dimension of an Axis Pattern that does not exist in the model. The angular spacing dimension of an Axis Pattern is automatically added to the Table as “ROT_DIR_1” after switching the Pattern type to Table, during redefinition of an axis Pattern.
This behavior was implemented in WF 3.0. The same behavior is available when you redefine a direction Pattern and switch the Pattern type to Table.
In this case, the linear spacing dimension of Direction Pattern is automatically added to Table as “TRANS_DIR_1”.
We have already added the related information in the help topic “To Redefine Various Pattern Types as a Table Pattern”.
We do not delete the dimension from the model, since it is automatically added to the Table.
But, we do not allow modifying it either, since the Axis Pattern does not exist in the model.

 

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAuthor
22-Sapphire II
December 6, 2024

I have tried to circumvent the selection limitation of the UI by defining a relation for D62 and using 6 decimal places. In the relations editor it shows as accurate, but this results in no change to the Pro/Table pattern value. Creo correctly uses units of degrees when evaluating this D62 value, but the relations are not driving the value used by the table in the pattern. Apparently, they have it locked down from every angle I can think of to modify it.

 

tbraxton_0-1733513077429.png

 

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAuthorAnswer
22-Sapphire II
December 11, 2024

PTC R&D has confirmed that the conversion to a table-driven pattern means that the dimension in question cannot have its significant figures changed in the table editor. It is working to specification according to them.

 

Two workarounds have been delivered by PTC support.

 

  1. Delete the table pattern and recreate the pattern (axis). With an axis pattern it is possible to modify the angle offset dimension to change the # of significant figures. Then convert it to a table pattern only after the significant figures are as required. This works. However, if you have an existing model with this situation, you may be facing a lot of work to resolve feature failures when deleting the pattern for the workaround.
  2. Add a 3D annotation note and include the dimension "&D123" where D123 is the dimension of interest. You can then through the UI modify the # of decimal places in the annotation note and this will update the value in the table pattern to match. 

tbraxton_0-1733939154423.png

 

 

 

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