Advance surface modelling assistance - 6-sided sketch blend

[DH_14427784]

Hi Community, 🙂

I am new in this forum.

I have medium experience in Creo Parametric (version 8 ) and have made a lot of 3D and 2D drawings.
I will soon get version 12.

The reason I am writing in here is that I have just begun my path into advanced surface modelling and that is a steep learning curve.

I have attached a render picture of what I am trying to create (made by a friend in Rhino), pictures of my sketches I have made, and pictures of my best result with and without surface analysis.

What I am trying to do is to make a surface between the different sketches but no matter what I do, it is either failing, or the surface quality is bad using analysis. 

I have used several techniques, and I have also tried to use the Style feature.

What I Hope is that you can help to me learn how to do this geometry with a good quality surface. I know I am missing some features, steps or adjustments in order to do this right, but at the moment I have hit a wall with my experience. 

Thank you in advance 🙂 

[tbraxton]

While there are tools for N-sided patches, generally it is better to create 4 sided surfaces. Overbuild a 4 sided surface and then trim it back. I would follow the green boundaries shown below. Pay attention to the construction curves used to define the bounds and their connections such that they support G2 (curvature) or higher order connections where needed. You may need to use composite curves to get a boundary suitable for the goal (#2 in pic below).

To access the n-sided patch you need to set a config option see this article (I am not suggesting this is the best approach to your issue):

https://support.ptc.com/help/creo/creo_pma/r12/usascii//index.html#page/surfacing/surface/To_Create_a_Surface_from_More_Than_Four_Boundaries.html 

As an alternative approach, based on the rendered image I see a possibility to use two surfaces of revolution about the holes and an extruded surface in the vertical direction that would intersect the revolved surfaces to generate the core geometry which you would then "patch" with an overbuilt 4 sided surface(s).

[DH_14427784]

Dear tbraxton, 🙂

Thank you for your feedback.

I will try your suggestions and report back if it works (it may take a while for me 😉 )

I will not use N-side patches to begin with as you say it is not the best approach, but I appreciate the suggestions as well. 

In the meantime, I am also open for other suggestions if there are other ways to do it 🙂  

[Catalina]

Hi @DH_14427784

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution or please feel free to detail in a reply what has helped you and mark it as the Accepted Solution. It will help other members who may have the same question.

Of course, if you have more to share on your issue, please pursue the conversation.

Thanks,

[DH_14427784]

Hi Catalina, 🙂

I have not solved the issue yet.

I am still trying to solve the advanced drawing.