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Up and Running with Autodesk Inventor
Illustration by Richard Downs

Working with origin geometry


From:

Up and Running with Autodesk Inventor

with John Helfen

Video: Working with origin geometry

In this video we're going to focus on the origin geometry. In the previous video, you watch me create a few basic features, and you may have noticed the Origin planes being used to start each part. The Origin is essentially the center of the universe within any part or assembly. And while it's called the Origin, it's actually made up of three planes and three axes that all intersect at a center point. I'm going to start a blank part file so that we can better understand the origin geometry. When creating a new part, the very first feature is always going to be a sketched feature.
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  1. 1m 28s
    1. Welcome
      41s
    2. Using the exercise files
      47s
  2. 8m 3s
    1. Exploring major workflow steps
      2m 19s
    2. Reviewing different file types
      4m 43s
    3. Exploring essential settings
      1m 1s
  3. 21m 39s
    1. Navigating using the ViewCube
      3m 26s
    2. Navigating using the navigation tools
      5m 36s
    3. Using the browser
      3m 17s
    4. Using the ribbon bar
      2m 10s
    5. Using the Quick Access Toolbar
      1m 4s
    6. Customizing the toolbars
      3m 7s
    7. Using the Marking menu
      2m 59s
  4. 48m 42s
    1. Introducing sketching
      3m 18s
    2. Working with origin geometry
      3m 47s
    3. Understanding constraints
      8m 43s
    4. Drawing with the Line tool
      8m 8s
    5. Dimensioning a part
      5m 0s
    6. Creating parameters
      8m 50s
    7. Creating circles and rectangles
      10m 56s
  5. 38m 31s
    1. Introducing part modeling
      2m 34s
    2. Creating a base extrusion
      5m 12s
    3. Creating multiple extrusions
      7m 35s
    4. Creating a cone by revolving
      6m 12s
    5. Creating holes
      6m 12s
    6. Creating a threaded hole
      3m 3s
    7. Using placed features
      2m 33s
    8. Editing part features
      5m 10s
  6. 25m 52s
    1. Introducing assemblies
      54s
    2. Placing components
      6m 29s
    3. Creating and managing constraints
      7m 50s
    4. Assembling parts
      7m 16s
    5. Understanding the Insert constraint
      3m 23s
  7. 25m 12s
    1. Exploring initial drawing creation
      4m 43s
    2. Placing views
      6m 11s
    3. Creating section and detail views
      5m 10s
    4. Setting basic dimensions
      2m 43s
    5. Changing dimension precision
      1m 24s
    6. Creating baseline dimensions
      1m 52s
    7. Creating center lines, center marks, and hole notes
      3m 9s
  8. 1m 20s
    1. Next steps
      1m 20s

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Up and Running with Autodesk Inventor
2h 50m Beginner Nov 14, 2012

Viewers: in countries Watching now:

This course introduces you to the interface and key processes of Inventor, the parametric design system from Autodesk. Author John Helfen covers sketching, part modeling, assemblies, and drawings. These tasks work in conjunction, allowing you to create parts and assemblies and document them in a way so that the manufacturing process proceeds faster and more efficiently.

Topics include:
  • Navigating drawings with the View Cube and other navigation tools
  • Sketching geometry
  • Dimensioning parts
  • Creating parameters
  • Drawing circles, squares, and other shapes
  • Creating extrusions
  • Creating and managing constraints in assemblies
  • Setting basic drawing dimensions
Subjects:
Prototyping Product Design CAD 2D Drawing 3D Drawing
Software:
Inventor
Author:
John Helfen

Working with origin geometry

In this video we're going to focus on the origin geometry. In the previous video, you watch me create a few basic features, and you may have noticed the Origin planes being used to start each part. The Origin is essentially the center of the universe within any part or assembly. And while it's called the Origin, it's actually made up of three planes and three axes that all intersect at a center point. I'm going to start a blank part file so that we can better understand the origin geometry. When creating a new part, the very first feature is always going to be a sketched feature.

And in order to create that sketch you need a flat surface. But in a brand-new part file, there are no flat surfaces and the origin geometry provides that drawing surface. The Origin can be found in the browser under the Origin folder, and when you expand it, you can actually see the three planes and three axes, and the Center Point that make up the Origin. Now by default the origin geometry is not visible. I'm going to rotate into a home view isometric and make those visible so that you can better understand where they are and how they work.

To turn on the visibility of a plane or an axis, or any of the origin geometry, simply right-click on it in the browser and select Visibility. You can also use standard Windows selection convention, such as selecting an item further down the list to gather a group of items. But once they're selected, you can right-click and select Visibility to enable them all at once. Now as I rotate, I think you'll get a better view of how these planes interact. If I hover over one of the planes in the browser, you'll see it highlight in the graphics window just like you would in any other part or assembly within Inventor.

Again, the browser is linked to what you see in the graphics window. As I hover down, you can see the XZ Plane is now highlighted, and here's the XY Plane. The axes are actually the intersection between two of the Origin planes. The X-axis, for example, is the intersection of the XY Plane and the XZ Plane. The Y-axis is an intersection of the XY Plane and the YZ Plane. Now that we know what the origin geometry is, I'm going to go ahead and turn it off--or make it not visible again--by selecting each of the items and unchecking Visibility from the right-click menu.

The reason I'm doing this is because in Autodesk Inventor 2013, a new feature was added that makes it less important to turn on and off the visibility of the origin geometry. When you're creating a sketch, the system now temporarily makes visible the origin geometry so that you can select your sketching plane, and it will automatically hide those items-- or return them to their hidden state-- after you've made your selection. So here I'm in the Create Sketch command. You'll notice in the browser that these items are visible, they're highlighted, they have color to them, and I can simply select one of the planes in the window to create my first sketch.

And you'll notice that the origin geometry in the browser has been returned to its hidden state. Now I'm going to go ahead and create a rectangle and extrude that to show you how to move forward from here. You'll notice, again, in the browser the origin geometry is all hidden. I can go ahead and collapse that, because after I've created my base feature, my first feature of my part, from that point forward any new sketch will actually use a face on the model to continue the sketching process.

Here we'll go ahead and create a circle that's similar to what we did in the previous video. I'll finish my sketch, and I can extrude that. But for this feature, I've not used the origin geometry. Instead, I've used a face off of one of the previous features I've created, and that process will continue as we move forward with part modeling.

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