Making a 1 into 3 coupler?

[SuzukiGS750EZ]

Hey guys,

How would I go about modeling a 1 into 3 "collector"? It would be a 3.5" long x 3" O.D. pipe on the top as the single and then three 1.5" O.D. x 3" long pipes coming off of it?

[evanp4509U4JZ]

Dimensions aren't exactly as you wanted as far as length goes. I'm sure this isn't the "best" way and I'd love any feedback, but it works. Knowing a few more details would have helped but you can see the process and tune it to what you need.

[etfrench]

Use the Pipe command.  Draw one line for the 3" pipe. Create it as a solid pipe.  Draw one line for the 1.5" pipe. Create it as a separate body.  Pattern the 1.5" pipe ( This can be around an axis, or on a plane). Combine all four bodies.  Use the Shell command to hollow it selecting all four faces:

[Warmingup1953]

Most important, I think, is to state what manufacturing method you propose. 3D Print? Or sheet metal?

[SuzukiGS750EZ]

I plan to 3D print. My thought was a 3” section and then loft it into an oval to three 1.5” sections all in a row. I couldn’t figure out how to do that. 

[etfrench]

Loft between each 1.5" circle and the 3" circle

or

[Warmingup1953]

Mine is a very simple version...Some fillets ets will make it stronger as a 3D printed part and Zero aerodynamic considerations made!

[SuzukiGS750EZ]

I like the ideas! This will be for attaching to a 3” corrugated tube for an extraction system. The 3” goes to a hose off the extractor to be clamped into the hose. The other tubes coming off of it go to three separate 1.5” hoses to various tools for dust extraction. They as well will need to be clamped.

[SuzukiGS750EZ]

Can you show your drawings and timeline please?

[etfrench]

I have already deleted the file, but it's really simple to recreate.

1. Draw a 3" circle on an Origin plane sketch.
2. Create a offset plane from that plane to a height for the transition section (Note: Extrusions will be added at each end for connecting pipes).
3. Draw three 1.5" circles in a sketch on the offset plane, allowing enough room between them for the connecting pipes or clamps.
4. Loft between each 1.5" circle and the 3" circle (One at a time and join each to the previous loft).
5. Extrude each end far enough to attach the clamps.
6. Shell the body by selecting all four faces.

1. Fillet the two seam to add a little strength.

[Warmingup1953]

...or a bit more streamlined:

[TrippyLighting]

T-Spines can serve well for very smooth transitions.

I can create a screencast if desired.

[ALE.REAL3D]

Yes Peter that will be very learning for all !!!!

[SuzukiGS750EZ]

Yes please

[TrippyLighting]

Here you go: