NX In sketcher when user trims a circle with pattern curves on it, relations are lost.

When user trims a circle with pattern curves on it, relations are lost.

Steps to Duplicate.

1. In sketch environment, draw a circle with 400 mm as the diameter.

2. Create a small circle with diameter as 80mm on the edge of the bigger circle 

3. Now Make Coincident between the center of small circle and the edge of the bigger circle.

4. Create circular pattern with Curve to Pattern is smaller circle and Rotation point as the center of the bigger circle Pitch and Span as 60 degrees and 360 degrees respectively.

5. Trim the bigger circle with boundary curve as smaller circle and Curve to trim is bigger circle.

6. Do the above step for all the pattern curves.

7. Now edit the dimension of bigger circle, below error occurs.

By default, NX does not find relations for the trimmed locations of the curve. For this case to work, we need to find the relations between the centers of the small circles and the trimmed portions of the big circle.

The Work Around is to create the relations between the centers of small circles and the large circle.