How to create a sketch of intersection of plane and boss

[Involute]

Sorry for the stilted English of the subject, but I was bumping up against the length limit.

So, I extrude a boss based on a circle, creating a cylinder. The cylinder passes through an inclined plane. Is there a way for me to capture the intersection of the plane and the cylinder (an oval) as a sketch on the inclined plane?

 

[wathavy4]

Somewhat like this sketch?
(Part sample)

View

 

[HaroldL]

Yes, if you follow the link, Max showed you the work flow here: //viewtopic.php?f=10&t=13777#p83775

 

[Involute]

That's exactly what I'm looking for, Toshi, thanks. I don't see how you get sketch 3 (the end result), however. Can you elaborate? Also, what purpose does sketch 2 serve? And, how do you delete the excess extrusion? I know, lots of questions. Sorry for being a n00b.

 

[Involute]

Yes, if you follow the link, Max showed you the work flow here: //viewtopic.php?f=10&t=13777#p83775

Hi, Harold. I thought that was going to work for me, but, as I explained in that thread, when I translated the inclined plane back towards the cylinder, so that they were intersecting, the oval created in step 8 changed position on the plane so as to no longer be aligned with the cylinder. I've tried a number of fixes, to no avail. I've discovered, however, that I can translate the plane first, then extrude the top of the cylinder to a distance well beyond the plane. If I can then capture the intersection, I'll have the desired sketch, and it will be in the desired location with respect to the cylinder. Hope that makes sense.

 

[HaroldL]

Hopefully I understand what you are attempting to accomplish.
Give this a try: (Thanks to Max for pointing the way.)

1. Create your cylinder on the ZX plane.
2. Create Reference plane 1 offset from the ZX plane and positioned above the top of the cylinder.
3. Create Reference plane 2 offset from XY plane and Tangent to the cylinder.
4. Create an Axis between Ref planes 1 and 2. This is the "hinge" for the next plane.
5. Create angled Reference plane 3 on the axis and either Ref plane 1 or 2. Angle to suite.
6. Start a sketch on Reference plane 1; select Project to sketch and pick the edge of the cylinder.
7. Extrude Boss To Geometry and select Reference plane 3.
8. Start a sketch on Reference plane 3; select Project to sketch and pick the edge of the last extrude.
9. Extrude boss the desired depth. Change the direction to be aligned with the Y-axis.
10. Next, RMB click on the To Geometry extrude and Suppress it.
11. Now you can adjust the offset of Reference plane 1 to position the angled, elliptical extrude.

One problem with Suppressing the Up To extrude is that the next extrude that references it will show an error (italicized text). Maybe a HIDE option would be in order. (Max, what do you think?)

 

[wathavy4]

Hi, Involute, here is the video for getting the section sketch of the cylinder.

http://www.youtube.com/watch?v=nPjqx85KlDg

 

[Involute]

Thanks loads, Toshi! You solved my problem. I really appreciate the effort. And in case you were wondering, this is what I wanted to end up with: