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K
kgwmu813-Newcomer
3-Newcomer
December 17, 2024
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A Pattern's resulting angle - does that dim have a name?

  • December 17, 2024
  • 2 replies
  • 1069 views

Hi,

I'm using Creo Parametric 9.0.6.0.

 

I'm looking for help finding out the name of the calculated angle dimension in a pattern.

 

I have a part that has a specifiable angle, 90 or 60 (red arrow). I need a different quantity of features (green check marks) depending on the angle of the part. These features must also start a specific distance away from an both inner edges. In order to pattern the features I created a curve (yellow line) at the constant offset from the inner edges (blue lines).

 

In the pattern, my driving items are the curve and the number of features I want the pattern to have. It gives a resulting angle dimension between features (2nd image, red box), I'd like to use that value to show in the family table or show on a drawing. Is there a way for me to link to that value, does it have a name hidden somewhere?

 

kgwmu81_0-1734472615546.png

 

kgwmu81_1-1734472630129.png

 

Best answer by tbraxton

I am fairly certain that there is no angle explicitly defined or calculated in your pattern; it is spacing (units of length) along the curve.

It appears based on your original post that you are placing the pattern members on a curve using the option to specify the # of members, I am almost certain that this spacing dimension has units of length in which case there is no angle dimension defined in the pattern explicitly. You can verify this using the relations editor as shown below for the dimension driving your pattern spacing. If this is the case for your pattern, then the answer to the question is there is no angle explicitly defined in your pattern.

 

tbraxton_0-1734541285086.png

 

You can also use feature info on the pattern to display the dimensions driving the pattern.

tbraxton_1-1734541529995.png

 

 

 

If you know the angle (60 deg or 90 deg) and you know the # of pattern members then you can derive the angle between each pattern member if you are not able to get it otherwise. You may have to use an analysis feature to measure it directly or write a relation to derive it using the available dimensions.

 

If you are working with a commercial license, can you post the part model here (put in a zip file before posting)? If not, then post the pattern feature info window results for your pattern and the relation editor evaluation of your driving dimension to confirm if it has angular units or not. I am still not clear on how you are driving the pattern. If I can query your model, then I can offer better insight in how to deal with the design intent you want.

 

 

2 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
December 17, 2024

The angle can be included in a feature creating the geometry of the part, it is probably already in your model. The arclength can be measured and managed by creating an analysis feature.

 

As an example, all features highlighted in yellow belong to the sketch feature and the arc length is measured by the analysis feature. This setup will enable you to drive the pattern using relations to space the members required based on the angle. The angle and arclength support setting the pattern spacing using either or both of these dimensions.

 

tbraxton_0-1734474690187.png

 

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
December 17, 2024

To answer your question directly, you can use the search tool (binocular icon in the UI) to find the pattern dimensions for the pattern already in your model. Here is an example of how to build a query to find all dimensions that are a child of a specific pattern to find the dimension of interest.

 

tbraxton_0-1734475459466.png

 

You can also invoke the relations editor with the pattern dims displayed in the graphics window to find the name as shown below.

 

tbraxton_1-1734475713818.png

 

 

K
kgwmu813-NewcomerAuthor
3-Newcomer
December 18, 2024

I appreciate the suggestions. I decided to create a 2nd curve which is linked to the patterned features so I get my resulting angle and I'm able to use a show dimension on the drawing. I am still unable to find that "resulting" angle dim shown in the creation window of the pattern feature. PTC must just keep that hidden if we don't use it to drive the pattern. Thanks for the suggestions, I will definitely give them a try. 

tbraxton
22-Sapphire II
tbraxton22-Sapphire IIAnswer
22-Sapphire II
December 18, 2024

I am fairly certain that there is no angle explicitly defined or calculated in your pattern; it is spacing (units of length) along the curve.

It appears based on your original post that you are placing the pattern members on a curve using the option to specify the # of members, I am almost certain that this spacing dimension has units of length in which case there is no angle dimension defined in the pattern explicitly. You can verify this using the relations editor as shown below for the dimension driving your pattern spacing. If this is the case for your pattern, then the answer to the question is there is no angle explicitly defined in your pattern.

 

tbraxton_0-1734541285086.png

 

You can also use feature info on the pattern to display the dimensions driving the pattern.

tbraxton_1-1734541529995.png

 

 

 

If you know the angle (60 deg or 90 deg) and you know the # of pattern members then you can derive the angle between each pattern member if you are not able to get it otherwise. You may have to use an analysis feature to measure it directly or write a relation to derive it using the available dimensions.

 

If you are working with a commercial license, can you post the part model here (put in a zip file before posting)? If not, then post the pattern feature info window results for your pattern and the relation editor evaluation of your driving dimension to confirm if it has angular units or not. I am still not clear on how you are driving the pattern. If I can query your model, then I can offer better insight in how to deal with the design intent you want.

 

 

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