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How to Determine Part Symmetry
Hi Reader,
We would like to know if there is a "smart" way to determine if a Part is symmetrical?
My first thought was to use the Center of Gravity and Check if 2 axis are zero and then maybe check the RangeBox of the solid etc. if that makes any sense at all. As we are only interested in Sheetmetal Part with a Flat Pattern, this could also be utilized for initial checks.
For Info:
We have some validation to check if material with foil side is used. A special sketched symbol with a leader is used on the drawing document to help the bender to determine the bend direction to make sure the sides are as intended. We managed to also validate if the attached geometry is actually the defined A Side or BaseFace of the Flat Pattern.
Now there will be a lot of "false" positives in the case the Part is symmetrical and therefor the side does not really matter. Therefor I would like to know if there is a simple way to determine if a Part is Symmetrical or not.
Kind Regards,
Anne Kempenaar
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Hi,
Maybe i can show you my company approach to this...:
1. we created new standard with two styles for bend lines in drawing:
it works fine..:
2. above title block we have symbol in which we describe red - bend down/ green - bend up
3. flat pattern view is placed always baseFace up. so that mean that bender gets it in state showed in drawing. you can add some rule for checking correct orientation in drawings.
that way we don't care about symmetry because the part is defined as it should and don't give much space for mistakes.
For checking symmetry i would imagine possible solution made by code without user interaction:
make symmetry in part from whole body wit result with new body, then thru subtract operation you will get part with 0 volume if part is symmetrical.