I have several questions regarding 3D sketches, sweeps, etc. I consider myself fairly proficient in most basic 3D modeling but I haven't had to dive into 3D sketches too often.
I am trying to make an exhaust pipe and I have attached an example here. Basically it is a 3D shape so I drew two 2D sketches that represent "projections" of the final shape. Then used the intersection command within a 3D sketch to get the intersection. One of my problems is why doesn't the intersection grab the final, lower leg of the right-side sketch? I have to add that last 5" leg as a separate 3D sketch.
After doing this, I use the "bend" command in the 3D sketch to get my radii.
Can anyone offer some 3D sketch tips/advice and maybe suggest a better way to accomplish what I'm doing here?
I can draw the "un-filleted" shape using a bunch of 2D sketches but then I can't apply a fillet between two 2D sketches so I end up with sharp pipe corners.
Any thoughts? Thanks.
Solved! Go to Solution.
Solved by JDMather. Go to Solution.
Have you seen this tutorial
http://home.pct.edu/~jmather/content/DSG322/Inventor%20Tutorials/Inventor%2011%20Tutorial%207.pdf
It looks to me like that pipe size is going to have some pretty tight bends?
Your dimension is an approximation - Project the endpoint as shown and then make coincident to the line for the exact dimension.
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I will go through that tutorial to make sure I fully understand it.
As far as the bends, that's just an example. What we're probably dealing with is more of a 4" OD pipe with a 5" radius bend. Everything I'm modeling is able to be constructed with readily available parts and bends. I just threw that together as a quick example.
Here are a couple of different techniques - depending on your design intent.
For better visibility - turn on Sketch1,2 (and then 3 rather than 2), but right click on them in the browser and turn off dimension visibility.
In the first example I added the fillets to the 2D sketches (might not be correct on non-orthoganal orientations) and in the second example I added Bends to the 3D sketch.
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