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Already up and running? This course is the next step in building your Autodesk Inventor skillset. Author John Helfen takes you through the interface and key processes of this parametric design system, including sketching, part modeling, assemblies, and drawings. Each process works in conjunction with the rest, allowing you to create parts and assemblies and document them in a way that they can be manufactured. Learn how to set up your project file; create and modify geometry; create extrusions, sweeps, and lofts; build parts with placed features and patterns of features; and create iParts and iFeatures. John also covers assembly visualization techniques, drawing views, and balloons and parts lists.
The course was created and produced by John Helfen. We're honored to host this training in our library.
We're now ready to look at the circular pattern feature. And that can be found in the pattern panel on the 3D model tab, right here in the middle. When we enter that dialogue box, you'll notice that it does look very similar to the rectangular pattern, so you should be familiar with this at this point, having gone through the rectangular pattern in the previous movies. But, just as a quick refresher, in the circular pattern dialogue box, you do have the ability to toggle between individual feature patterns, and solid patterns. And you're automatically placed in the feature selection mode.
And Inventor is now waiting for us to select the features we want to pattern. In this example, unlike the rectangular pattern, I went ahead and created multiple features that we can pattern. I created an extrusion as a hole, and I created a simple key weight with an extrusion. By hovering over the model and left-clicking on each of those features, you can see them highlighted in the browser, indicating that they're ready for patterning. The next option is the rotation axis, and this is somewhat similar to selecting a direction in the rectangular pattern. What Inventor needs, is a circular face that it can extract an axis to revolve around.
So, when we select this outer edge, you can see the axis selected through the center, and you see the direction in which we're going to be patterning this feature. Now, because the degrees, or the angle, is set to 360, we're doing a full revolution. If we were to dial that back to say 180 degrees, you can now see that the direction is very clear. We start at the top and we work in the direction of the arrow to create the pattern. And just like the rectangular pattern feature, we have the ability to flip that direction as well.
And it's just a toggle, exactly like the rectangular feature. We're going to go ahead and set it back to where it was. And look finally at the last couple options we haven't covered. We do have the ability just like in rectangular pattern, to set the number of occurrences we're going to see in this pattern. If I went to, for example, five, you can see that the preview is updated. You've already seen the angle, which we set to 180 instead of 360. And the final option is the midpoint optionm which works exactly like the rectangular pattern as well.
By selecting this check box, Inventor's going to use the original feature as the midpoint of this pattern. Which means, if we have five instances, the first one is the original feature, and then it will equally distribute the remaining items on either side of that original feature. By selecting Okay, you can see that the model is updated, we have our pattern. And circular pattern one is created in the browser. If you expand circular pattern one, you can see each occurrence of that feature, listed here in the browser.
And, if needed, you can right-click on that option and select Suppress to temporarily remove that from the pattern, or, right-click and toggle Suppression off and return that. That comes in handy when you need to temporarily hide something and maybe make one instance different from all the rest in the pattern, without having to manually create each item individually.
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