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Geometric development - Pipe elbow- how to get a perpendicular cut on the profile curve

shervin_mshervin_m Member Posts: 2

Hi,

I need to produce a flat cut pattern for an elbow meeting a straight piece of pipe.

that part I have figured out and I can get the flat pattern. however, in real world use, I would not be able to produce an infinitely fine taper to join the profiles. I need the pipe face profile to end at the pipe wall thickness.

This is the model

https://cad.onshape.com/documents/8778f7691fe4e67997d81760/w/87b821c2b5e66c150e3bedba/e/f626faa4826e6c1654f02d48?renderMode=0&uiState=69927bb41bd2cdac8fea5f4c

the true profile would be a line with a fixed point, rotating while moving perpendicular to the axis of rotation. I have created a loft that approximates that profile. but I do not know how to use that loft profile to split the part. (strictly speaking the loft profile doesn't look %100 correct either, but it is close enough)

Any help would be appreciated!

Comments

  • robert_scott_jr_robert_scott_jr_ Member Posts: 750 ✭✭✭

    Hey Shervin. Perhaps the method in this document is what you are after; not sure. I opted to extrude a surface rather than a solid in the extrude of the straight pipe. A Boolean Remove resulted in a surface with one end having the contour of the elbow. Last was the Thicken tool. - Scotty

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