Join John Helfen for an in-depth discussion in this video Modify edges with fillets and chamfers, part of Autodesk Inventor 2018 Essential Training.
- [Voiceover] We're now ready to look at how we can modify edges with the fillet and chamfer tools. Fillets and chamfers are very similar and they're actually quite easy to make. That said, I would recommend waiting to create them until the end of the design process just because they can tend to weigh down the model and get in the way sometimes. So, I generally wait until I'm done with my modeling before I add these. Unless some thing's needed very specifically in the design, I tend to wait. In order to create a fillet or chamfer, there's a few different options you can select from.
You can either go to the 3D model tab under the modify panel and select fillet or chamfer. We also have in the marking menu the fillet option. I actually use the context sensitivity of Inventor because when I select an edge on the model the heads-up display tells me the things that I can do to that edge. And one is fillet and the other is chamfer. I'm going to start with the fillet command and you can see here by selecting that a preview is presented and we get a heads-up display.
At this point we can simply use the heads-up display to click and drag on this, to adjust its size or we can continue selecting additional edges. Now at this point I've gone ahead and selected two outer edges. But you can also fillet inner edges as well. For example, if we select this edge that runs around this platform, we can add a fillet there. Let's go ahead and enter .1875 and you can see the preview updates. There's a couple settings I do want to mention here.
We're not going to cover them in detail because they're really beyond an essentials course. But I do want to make sure you're aware that they're there. And the first one is to the left of the value we have the different types of fillets that are available. Constant radius fillets, variable radius fillets and setbacks. The other option I wanted point out is the type of fillet you're creating. Essentially it defines the type of smoothness. You're either going to see a tangent or a smooth G2 fillet. While both of these are available the tangent fillet is what most people use most of the time.
I just wanted to make sure you knew that those were available to you if needed. We can go ahead and select the green check mark and the fillets are created. If we rotate to the right view you can see that we have the curvature here on this inner edge and if we rotate to the top view you can see we have the curvature on the outer edges. Next, we're going to look at how we can create a chamfer. To do that we're going to select the edge that runs around the top of this platform. We're going to select the chamfer tool. By default, Inventor is set to an equal distance chamfer.
Let me move the dialog box or the heads-up display a little bit and let's rotate back to the back of this model and have a look at what's being created. Here you can see that Inventor has automatically entered a value of .125 and it will remember the last value you used. So you might see something different. If you don't see .125 go ahead and enter that in heads-up display. The other thing you'll see is that that value is equal on both sides of these edges, essentially creating a 45 degree chamfer.
This is what most people are going to use most of the time. That said, there is another option that I want to make people aware of. And that can be found by clicking the drop down just to the left of the value in the heads-up display. We also, by default you get a distance chamfer. The other options are distance and angle or two distances. I'm going to select the two distances option and you can see we removed the edge and were placed in the edge selection mode. I'm going to select that edge one more time and here what has happened is we have two different dimensions and each are set to an equal value.
So really nothing's changed at this point. Let's go ahead and rotate back to the backside of the model. Since these are equal, we essentially have the same chamfer we had in the previous step. But, we can go ahead and use the heads-up display and left click and drag on the orange arrow to adjust that. By clicking and dragging on that you can see that the value has been updated in the heads-up display. If we hit the home button on the view cube we can return to an isometric view and you can see this a little more clearly.
Now that we can see the chamfer more clearly, I want to point out this flip option. Because if you don't use the heads-up display, where you drag this value and it updates a specific value you may type values into this and you may, by mistake, type them in the wrong box. If you do that, you can simply use the flip command which will swap these values in these fields. On the screen you can see the result of that flip. We'll go ahead and leave it where we had it set originally and select okay.
You can now see that we have the chamfer applied and in the browser we now have two placed features. We have a fillet, which represents three fillets in the model and we have a chamfer, which includes that one edge around that platform.
- Reviewing interface changes
- Projecting and importing geometry
- Working with Autodesk AnyCAD
- Understanding part modeling
- Building parts with placed features
- Working with partial chamfers