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Inventor 2014 Essential Training
Illustration by Richard Downs

Working with origin geometry


From:

Inventor 2014 Essential Training

with John Helfen

Video: Working with origin geometry

As we continue to learn about sketching, I want to take What this is going to do is create a blank part file, but it's not entirely blank.
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  1. 1m 24s
    1. Welcome
      47s
    2. Using the exercise files
      37s
  2. 6m 20s
    1. Exploring major workflow steps
      2m 19s
    2. Reviewing different file types
      4m 1s
  3. 22m 3s
    1. Navigating using the ViewCube
      4m 56s
    2. Navigating using the navigation tools
      5m 31s
    3. Using the browser
      3m 34s
    4. Using the ribbon bar
      2m 47s
    5. Using the Quick Access Toolbar
      42s
    6. Using the Marking menu
      4m 33s
  4. 22m 6s
    1. Basic menu customization
      6m 40s
    2. Custom ribbon bar panels
      6m 22s
    3. Keyboard
      5m 9s
    4. Marking menu customization
      3m 55s
  5. 20m 24s
    1. Project file introduction
      3m 54s
    2. The project file: .ipj
      4m 4s
    3. Setting up the project file for this course
      7m 11s
    4. Frequently used subfolders
      5m 15s
  6. 22m 31s
    1. Introducing sketching
      4m 55s
    2. Working with origin geometry
      4m 46s
    3. Understanding constraints
      7m 39s
    4. Application options
      5m 11s
  7. 50m 43s
    1. Drawing lines
      6m 29s
    2. Creating rectangles and arcs
      9m 26s
    3. Creating splines
      6m 35s
    4. Creating slots
      5m 43s
    5. Construction geometry
      6m 18s
    6. Dimensioning
      9m 34s
    7. Parameters
      6m 38s
  8. 30m 33s
    1. Move, copy, and rotate sketch geometry
      7m 43s
    2. Trim, extend, and split sketch geometry
      6m 20s
    3. Scale, stretch, and offset geometry
      7m 47s
    4. Creating rectangular, circular, and mirrored sketch patterns
      8m 43s
  9. 19m 27s
    1. Understanding work features
      3m 58s
    2. Creating offset work planes
      4m 17s
    3. Creating work planes
      6m 59s
    4. Creating work axes and points
      4m 13s
  10. 16m 50s
    1. Projecting geometry
      7m 7s
    2. Importing AutoCAD data
      9m 43s
  11. 54m 31s
    1. Part feature introduction
      5m 14s
    2. Creating a base extrusion feature
      8m 46s
    3. Keeping extrusions connected with the To next face/body option
      4m 29s
    4. Creating revolves
      7m 42s
    5. Creating complex shapes with the Loft tool
      8m 50s
    6. Adding control to a loft by creating rails
      8m 40s
    7. Creating a sweep feature
      6m 16s
    8. Creating a sweep feature with model edges
      4m 34s
  12. 24m 44s
    1. Adding holes to a part model
      10m 10s
    2. Modifying edges with fillets and chamfers
      4m 18s
    3. Hollowing parts with the shell feature
      10m 16s
  13. 25m 37s
    1. Creating rectangular feature patterns
      9m 23s
    2. Adding intelligence to a rectangular pattern
      5m 45s
    3. Creating rectangular feature patterns along a path
      2m 22s
    4. Creating circular feature patterns
      3m 11s
    5. Mirroring part features
      4m 56s
  14. 31m 30s
    1. Understanding iParts and iFeatures
      3m 19s
    2. Creating an iPart from an existing part
      11m 0s
    3. Changing between versions inside an iPart
      5m 50s
    4. Extracting iFeatures for use in other parts
      5m 11s
    5. Inserting iFeatures into a part
      6m 10s
  15. 26m 23s
    1. Introduction to assemblies NEW
      1m 59s
    2. Placing components NEW
      7m 40s
    3. Creating components in the context of an assembly NEW
      8m 9s
    4. Placing fasteners from the Content Center NEW
      8m 35s
  16. 46m 14s
    1. The Mate/Flush constraint NEW
      9m 42s
    2. The Angle constraint NEW
      5m 34s
    3. The Insert constraint NEW
      3m 55s
    4. Driving constraints NEW
      10m 0s
    5. The Transitional tab NEW
      3m 50s
    6. The Motion tab NEW
      9m 18s
    7. Contact sets NEW
      3m 55s
  17. 18m 38s
    1. Adding materials to parts in an assembly NEW
      4m 3s
    2. Visual styles NEW
      4m 52s
    3. Enhancing the design experience with shadows NEW
      2m 9s
    4. Adding a ground plane, reflections, and perspective to a design NEW
      3m 34s
    5. Changing the lighting style to match a design NEW
      4m 0s
  18. 39m 11s
    1. Exploring initial drawing creation NEW
      5m 6s
    2. Placing base and projected views NEW
      9m 31s
    3. Creating section views NEW
      8m 0s
    4. Creating detail views NEW
      3m 56s
    5. Creating a breakout view NEW
      5m 41s
    6. Creating auxiliary and cropped views NEW
      6m 57s
  19. 25m 57s
    1. Creating general dimensions NEW
      9m 20s
    2. Changing dimension precision NEW
      4m 21s
    3. Creating baseline, ordinate, and chain dimensions NEW
      5m 51s
    4. Creating baseline, ordinate, and chain dimension sets NEW
      6m 25s
  20. 10m 43s
    1. Creating individual balloons NEW
      4m 34s
    2. Creating a group of balloons with automatic ballooning NEW
      3m 40s
    3. Adding a parts list to the drawing NEW
      2m 29s
  21. 30s
    1. Next steps
      30s

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Inventor 2014 Essential Training
8h 36m Beginner Apr 17, 2014 Updated May 19, 2014

Viewers: in countries Watching now:

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.

Topics include:
  • Customizing Inventor's menus
  • Drawing rectangles, arcs, splines, and slots
  • Moving, copying, and rotating geometry
  • Trimming, splitting, scaling, and stretching geometry
  • Creating work planes
  • Projecting and importing geometry
  • Creating extrusions, revolves, sweeps, and lofts
  • Adding holes to a part model
  • Creating rectangular feature patterns
  • Creating iParts and iFeatures
  • Using constraints to position parts
  • Creating drawing views
  • Setting dimensions
Subjects:
Prototyping Product Design CAD 3D Drawing
Software:
Inventor
Author:
John Helfen

Working with origin geometry

As we continue to learn about sketching, I want to take a minute to talk a little bit about the origin geometry. Because the origin geometry is something you will interact with with every single part you will create and is essentially the center of the universe for every sketch, part and assembly you are going to create. I'll start out by creating a new part file, by selecting the New button on the tool bar, selecting standard.ipt, and then hitting Create. What this is going to do is create a blank part file, but it's not entirely blank. The one component that is always going to be in every part file are the set of origin geometry.

Origin geometry is found in the browser, in the origin folder, and if you click the plus symbol next to it, you can expand and see all the geometry that make up the actual origin. By default, the origin geometry is turned off. Essentially, it's a set of planes that intersect to create axes, which intersect to create a central point that is fixed in space, so that you can use that as reference throughout all your designs. To make them visible, I'm going to go ahead and select the top one, the yz plane, then I'm going to hold my shift key down on my keyboard.

I'm going to left click on the center point and select all the geometry. I can then right click and select Visibility to enable that geometry. Now, I'm going to show you what the geometry is and how to use it. But most of the time, Inventor is going to use that geometry as needed. It's going to enable it and disable it at the beginning of every single part, just so you can get started sketching. But as I orbit, you can start to see how these planes interact. If I hover over each of these planes in the browser, you'll see them highlight in the graphics window.

And essentially what you see here is planes that intersect to create each of these axes, which then creates the center point. And that center point's important because it is the center of the universe. It's the central point that will never move, and by default in Inventor, it's projected to every single sketch so that you have a locked point that you can design from. That comes in really handy when you're changing the size and shape of models to know that they're going to move or scale from that location. And you'll see what I mean as we get through sketching and part modelling throughout this course.

But it's important to understand where the geometry is and how it's used. Now that you see where the geometry's located, I'm going to go ahead and turn that, the visibility of these geometry components off by right clicking on them and selecting Visibility. And show you how Inventor helps enable and disable those as you need them. In order to create a new part, you need to create a base feature. And in order to create that base feature which is essentially the very first feature you ever create in a part, you need a flat surface to draw on. The origin geometry provides that for you.

If I create a new sketch, you'll notice that in the browser the origin geometry now has color. Which means they're all visible, and you can see them on the Graphics window. In order to begin sketching, I simply need to select one of these planes to sketch on. And Inventor will create a new sketch on that plane and rotate me into a normal view so that I can actually begin sketching. If I create a two-point rectangle on the sketch and finish, Inventor will return me to my Isometric view. And it disables all the origin geometry again.

Now, if I hover over this xy plane, you can see that it, the geometry I just created is sitting right on that plane. I can always go back and use that geometry again if I wish. But, in most cases with Inventor, you're going to go ahead and apply a modeling action to that 2D shape. And from that point forward, you're generally going to use faces on the model to create new sketches. For example, the second sketch I create will not turn on the geometry, but instead, allow me to select faces on the model to create that new sketch.

It doesn't mean I can't go back and use the geometry if I wish. For example, if I needed to, I can always go back to my xy plane, select it, and actually create a sketch on it. But, in most cases, once you've started building a model, you'll use faces on the part to generate sketches. There are times when you're building models in more advanced assemblies where you may use the origin geometry as your fixed location in space to refer to a location in a building or in a machine as reference.

But for the most part, the origin geometry is going to be used to create that initial base feature that you need to create in every single part.

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