advice modeling tromboncino racing creo 2.0

[pulce1988]

Good morning to all, I recently found this forum (I made the presentation in the special section...), and I open this post to ask you a advice to model an aspiration horn for thermal motor as from photo. I thought of a blend of sweep, but the problem that the back of the croup should remain orthogonal at the base, while the opposite side should start bending. I also thought of a limit blend but I'm afraid to further complicate things....you mean how would you?Leaving to lose that I made the blend line of sweep straight, I also have the problem that in the configuration of the sweep blend when I put it creates a surface instead of creating solid, giving ok I do not find the feature in sight to the contrary of when I put solid creation...thanks for the time devoted to me.. .

 

[320i S]

hi, this component cannot be totally modeled with solid extrusions, because in case of change of shape to make the most of the flows, you do not have the flexibility of management, so it should be modeled with the surfaces.

below I will put the steps made to the flight that you might be useful to understand what I mean.
premise, I imagine dividing the tromboncino in 4 sectors (you could divide it even in just 2 sectors, but I would split it into a minimum of 4 to have greater future flexibility), but you can divide it in how many sectors you want:

image 1: drawings the curves that describe the beginning and end of the tromboncino, the points you see active, are not necessary, serve only to make you understand how many parts I have divided the 2 circles (which can be ellipsed, oval or whatever you want, even spline)

Image 2: Draw the curves for each sector where you split the tromboncino

image 3: with the "blend" surface command, connect the curves that descive every sector

image 4: with the "unisci" command, you combine all the surfaces of the tromboncino and with the "often" command from the thickness to the surfaces, if the thickness varies, you will have to create the surfaces that define the thickness, join the two groups of surfaces with closing surfaces (always with the "blend" command), combine everything creating a union of surfaces and use the "solid" command.

the tromboncino mounting flange you can do it with solid extrusions, but I suggest you do it after defining the tromboncino so that you can combine it with solid fitting.

I hope I've been helpful.

 

[Therapy?]

Hi. even if I was late today I was reading this email and I wanted to try to reconstruct the object

I think it's important to have the air entry part in tangenza

I have always reconstructed it with a series of blend surfaces but controlling the tangence (case-measurable measures) since it is parametric)

Attached I put the file in creo2 and if it can be useful

 

[pulce1988]

thank you so much for the collaboration, I attach you what I managed to do...I have to review some quotas however the procedure should be the most suitable...

 

[pulce1988]

I also attach my file to creo 2.0 so when you have time/voke you give us a look and you see any wrong or unnecessary procedures of the part.. .

 

[320i S]

beyond the quotas, I would say that we are there, but if you are still being developed, having the blend through all the curves, it can give you some scratch if you have to change the shape.
I personally prefer to break everything in multiple blends, the system does not change practically anything.
If you're sure about the main form, that's fine.