topic Re: Circular pattern changes position of feature in Inventor Forum

Circular pattern changes position of feature

gert-leonvanlier — Mon, 22 Feb 2021 09:15:53 GMT

I think the images speak for itself. The bottom beam of the original feature/support is at 389 mm height. I need a circular pattern on the entire support. When I create the pattern, the bottom beam is somehow moved up to 872 mm. The preview of the circular pattern shows how it should be. I can not figure out what is causing this. Does anyone have an idea?

I attached a simplified ipt.

Using Inventor 2019.

Re: Circular pattern changes position of feature

admaiora — Mon, 22 Feb 2021 10:08:14 GMT

Are you aware of those iLogic rules inside? I presume that can be the cause

Re: Circular pattern changes position of feature

admaiora — Mon, 22 Feb 2021 10:11:38 GMT

Editing, withount change, the pattern feature and than OK, seems to fix it

Re: Circular pattern changes position of feature

gert-leonvanlier — Mon, 22 Feb 2021 10:13:44 GMT

Yes, I am aware of the iLogic rules. They are mine.

Re: Circular pattern changes position of feature

gert-leonvanlier — Mon, 22 Feb 2021 10:15:29 GMT

You mean editing SupportCurvePattern and then OK? That doesn't work. The preview is as it should be, but after that it is wrong.

Re: Circular pattern changes position of feature

gert-leonvanlier — Mon, 22 Feb 2021 10:46:39 GMT

I built the features from scratch and now it is working. Although I got two errors where a sketch could not be created. Very strange, but I solved it using work planes.

Re: Circular pattern changes position of feature

johnsonshiue — Mon, 22 Feb 2021 21:15:24 GMT

Hi! I recalled there was a bug in 2018 when Sketch-Driven Pattern was introduced. Then it got fixed in one of the updates on 2019 or 2018 I don't recall exactly. Rebuild All in later releases should fix it too. If you see the behavior again, please let us know.

Many thanks!

Re: Circular pattern changes position of feature

gert-leonvanlier — Thu, 01 Apr 2021 10:25:26 GMT

I think the bug is still there, because it's happening again, although it was gone for a while.

Re: Circular pattern changes position of feature

johnsonshiue — Thu, 01 Apr 2021 17:22:13 GMT

Hi Gert,

If possible, please share an example that exhibits the behavior. Just to double-check. Please make sure you select a logical base point from the source feature.

Many thanks!