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J
John.Pryal1-Visitor
1-Visitor
August 6, 2018
Solved

Helical Swirl

  • August 6, 2018
  • 8 replies
  • 3226 views

Hi all, i am re-visiting an old problem. I posted on here years ago something similar but stopped researching when I came up with an alternative way of producing the type of suface I was after. Now i am looking for better control. I wonder if anyone could explain the behaviour I am see in this sweep feature. I am trying to create a helical swirl surface controlled by graph. The graph should give me complete control over the path of my swirl surface. I am close but Creo is doing something very weird. If you look at the attached model you will hopefully see the kind of surface i am trying to produce & the crazy way that Creo is dealing with it. Perhaps my graph should look different, perhaps the relation embedded within the sweep feature is not written correctly. Also, could this swirl surface be created by relation only? ie. not using evalgraph.

Best regards

John

Best answer by MartinHanak

Hi,

... and what about this one ...

8 replies

M
MartinHanak24-Ruby III
24-Ruby III
August 7, 2018

Hi,

I guess that the problem is caused by arc flipping caused by sketcher functionality. Unfortunatelly I do not know how to force sketcher to follow the same direction of the arc.

M
MartinHanak24-Ruby III
24-Ruby III
August 7, 2018

Hi,

do you want to get something like this ?

prt0001_mh.png

J
John.Pryal1-VisitorAuthor
1-Visitor
August 7, 2018

Hi Martin, no that is not quiet what i am after. Its more of a thin strip. If you look closely at the model i posted you will see what i mean. Thanks for trying.

 

Best regards

John

M
MartinHanak24-Ruby IIIAnswer
24-Ruby III
August 8, 2018

Hi,

... and what about this one ...

    kdirth
    kdirth21-Topaz I
    21-Topaz I
    August 7, 2018

    Not sure what you are trying to get to, but looking at your file and trying to filter out the noise, here is my attempt.

    There is always more to learn.
    J
    John.Pryal1-VisitorAuthor
    1-Visitor
    August 8, 2018

    Again, not what i am trying to get, but thank you for having a go. The surface i am trying to create turns through 75 degrees while getting bigger in diameter as it climbs 100mm. The surface needs  to start & finish normal to the 2 horizontal datum planes between which it sits. The surface i have managed to create is exactly what i want apart from all the "noise" as you put it. Hopefully, this gives a clearer indication of my requirement.

    Best regards

    John

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