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How to correctly sweep through this curve?

pkristof
3-Newcomer

How to correctly sweep through this curve?

Made this curve through points, it supposed to be a conveyor belt

1.PNG

When i tried to make a simple sweep, drew a rectangle at the starting point, it swept it along the trajectory by rotating the rectangle, based on the curve's direction. So the rectanlge didn't remain normal , and I couldn't figure out which setting to use

2.png

 

So the question, how can I make this sweep, so the rectangles sides stay normal to something, and doesnt rotate?

 

Or is there an alternative way to do this? I just want a rectangle section along the curve

 

Here's the file : files.fm/u/dpqvzrxw#

 

Thanks!!

 

9 REPLIES 9

Hi, did you find any solution to this problem?

I know it's been 7 years, but I have a similar problem with control of my sweep and preventing an unexpected twist.

Screenshot 2024-12-23 004014.png

Van_AG
13-Aquamarine
(To:pkristof)

Set "Section plane control" to "Normal To Projection" in sweep References.

And set datum plane witch will define orientation for sweep section.

@Van_AG thank you , but can you please be more specific? I have about 25 planes in this design, I know you don't see them.

That rectangle must be rotated 90 deg, so the angle that now has 51.9155 deg should have 90 deg and the other one should have 0 deg.

 

I'm not sure which datum plane to pick as it doesn't generate anything when I do. It doesn't allow me to sketch the profile anything when I do.

Which planes to pick?Which planes to pick?

1 must be parallel to 2 and right angle between 3 & 4. The turn to bottom left must be flat as well, with the bigger surface on the top. 

Van_AG
13-Aquamarine
(To:AJ_12152667)

Can you share the trajectory curve please.

I'll try to explain

Here goes the file @Van_AG , Hope it works.

 

Van_AG
13-Aquamarine
(To:AJ_12152667)

Please see the attached models.

Trajectory segments "Intersect 1" and "Intersect 2" not tangent to neighbors, so I recreate them in r3-model

Thank's @Van_AG it does look lovely now.

 

Can you expand on the steps so we all can understand what is the process please?

I see what you did, but since this tool is new to me, I don't quite understand HOW did you do it 😊

Screenshot 2024-12-23 184547.png

 

I see that you have created additional sections in here, and set them up to main XY plane, great move.

 

I suppose, this is what you mean by setting the tangency? This tool seems to be a very powerful one. Can you guide us to some extensive tutorial perhaps?

Screenshot 2024-12-23 192421.png

tbraxton
22-Sapphire I
(To:AJ_12152667)

I would encourage you to create a new thread specific to your model and issue. I have posted here an example of how to manage the trajectory of the corners which I think provides what you are looking for. In general, one would like to have a minimum of G1 (tangency) continuity along the entire sweep trajectory. With less than G1 continuity in the trajectory it usually results in undesired geometry when used for sweeps. 

tbraxton_2-1734977303431.png

 

I have enclosed a model (Creo 4) where I have "managed" the corner transitions in a way that imposes tangency such that you can use the sweep normal to trajectory option to get a "good" corner transition. Note the corner has a single tangent transition where the two radii meet in 3D space.

tbraxton_0-1734976786615.png

 

 

 

 

 

 

========================================
Involute Development, LLC
Consulting Engineers
Specialists in Creo Parametric
tbraxton
22-Sapphire I
(To:tbraxton)

Illustration of corner control using two radii. This paradigm can of course be implemented for splines and 3D curves (ISDX) to get a desired transition in the corner as well. It is possible to impose continuity at G2 and G3 in some cases if needed.

 

 

tbraxton_1-1734978643119.png

 

========================================
Involute Development, LLC
Consulting Engineers
Specialists in Creo Parametric
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