In this video, learn about linear and rotated shapes.
- [Instructor] In the exercise files that you downloaded, I want you to go in and open the SM bracket for sheet metal bracket. We're going to use this as an example to show you how to do extrudes and revolves. So the first thing I'm going to do is I'm just going to simply hide this green sketch. Extrude. With this, you're going to specify a profile. Now in this case I have this sketch. The sketch has an automatic direction. The sketch normal. I can take this, extrude this out to whatever length I want, either direction, positive, negative values as well.
I also can do a mirrored extent. Get your extrusion. Now if this were a non-planer curve, I could specify a vector direction. So for this vector direction could be a line that you set up earlier. Now with that being said, this can be an actual curve, spline, sketch, you can extrude points. So pretty much any type of profile that you want, you can extrude. If I select okay and I do another extrusion for example, you'll notice that I can pick this surface for an extrusion.
In this case, for my direction, I'll just pick the yz plane. Unless I come over here and pick it. And as you can see it extrudes that previous extrusion to make surface. Just go ahead and delete that. So basically, you can extrude any type of 3D element. You just need to specify the direction you want it to extrude in, if it's a non-sketched entity. Again the sketch will have a default direction. If you don't want that default direction, create a curve or a line in the direction you want, a tooling direction perhaps and use that.
So there's my extrude. Let me just go ahead and delete that. Next I want to do a revolve. So for the revolve I'm going to set up a bit of geometry, something to revolve around. I'm going to select this point. Just draw a point out on this plane. I'm going to do the same thing, same plane. And I'm just going to draw a line between those two points. I'm going to go under the extrude function, pull out this toolbar, and you'll see revolve right next to the extrude.
Pretty straight forward. Specify your profile and the revolution axis. Again, you can go from zero to 360, or any increment within that range. If I want a complete revolve... Whoops, it's yelling at me for this four degrees that I have in there. Just go to zero and select okay. There's my complete revolve. If I make a modification to this revolution axis, you'll see the revolve updates along with the shifting of the revolution axis.
Now basically note, I talked a little bit about this in a previous video about lines, when you're creating lines. You'll notice I created this line between those two points. This was my start point. This is my end point. I'm going to delete this revolve. I'm going to go ahead and make it again. Helps to pick the correct entity. Pick my sketch. Pick my line. And I'm just going to go out to 180. And again, I started from here and went out to here.
I'm going to select okay. This is the direction of 180 degrees. If I were to build everything, just delete that, in the opposite direction. There we go. Go into my revolve. Pick my sketch. Pick my curve. You'll notice that it revolves in the opposite direction. Again, because of the vector, where that rotation axis of that revolve.
The start point is here, end point is here. It is now 180 degrees out.
- Workbenches for surface creation
- Different meanings of hybrid design
- Point, line, and plane references
- Creating sweep surfaces
- Making 3D spline curves and offset surfaces
- Joining together elements
- Using transformations
- Extrapolating curves and surfaces