hrsnblm Posted February 29, 2012 Share Posted February 29, 2012 Hello, I've done several 3D modeling and prefer to build a model first before laying out parts for construction. Right now I am working on a cylindrical insert the has chambers internally and o-ring grooves on the exterior. So far all has gone well. However, now I need to create an o-ring groove that runs around the cylinder and has "bends" in a couple of positions to route the o-ring around ports. I can not figure out how to create these "bent o-rings" and make them such that I can subtract them from the cylinder and have the proper grooves. I would appreciate any and all assistance. Thanks Hopefully I did this right, but I attached a drawing of the cyclinder for information. cyl ex.dwg Quote Link to comment Share on other sites More sharing options...
Denimoth Posted February 29, 2012 Share Posted February 29, 2012 (edited) Maybe you're looking for something more complicated, but in my mind, I'm thinking the following steps can get the desired effect: 1. You create side view of your o-ring with the bend in it, extrude it. 2. Then in plan, draw a circe (or donut) with the desired internal and external radius of your o-ring, extrude that so that it intersects your side view. 3. Follow up with INTERSECT to get your finished ring. Then place it on your part and subtract it to get the desired groove? Edited February 29, 2012 by Denimoth Quote Link to comment Share on other sites More sharing options...
ReMark Posted February 29, 2012 Share Posted February 29, 2012 Draw the path you want the o-ring to follow and sweep a circle along it. Subtract as necessary to create the groove. Quote Link to comment Share on other sites More sharing options...
ReMark Posted February 29, 2012 Share Posted February 29, 2012 (edited) hrsnblm: I don't suppose you could indicate where this o-ring groove is going to be located and what shape it is going to be could you? No response. I guess he got it all figured out. Good for him. Edited February 29, 2012 by ReMark Quote Link to comment Share on other sites More sharing options...
hrsnblm Posted February 29, 2012 Author Share Posted February 29, 2012 I tried that but I was unable to be successful in creating a path that I could sweep. I keep getting errors when I try to create a single object out of the pieces that I made to be the path. I can do fairly well in a lot of areas but there are still some ideas I have trouble with. Quote Link to comment Share on other sites More sharing options...
hrsnblm Posted February 29, 2012 Author Share Posted February 29, 2012 Thanks for the info. I will give it a try and see if I can be successful Quote Link to comment Share on other sites More sharing options...
JD Mather Posted February 29, 2012 Share Posted February 29, 2012 This topic can actually get far more complex than you might imagine (at least for close tolerance machining). http://home.pct.edu/~jmather/content/DSG322/Inventor%20Tutorials/Inventor%2011%20Tutorial%2011.pdf Quote Link to comment Share on other sites More sharing options...
ReMark Posted February 29, 2012 Share Posted February 29, 2012 It would really help us if we could see what you are working with. Quote Link to comment Share on other sites More sharing options...
ReMark Posted March 1, 2012 Share Posted March 1, 2012 Thanks for the info. I will give it a try and see if I can be successful Have you had any luck getting your groove back? Quote Link to comment Share on other sites More sharing options...
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