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Adding intelligence to a rectangular pattern

From: Inventor 2014 Essential Training

Video: Adding intelligence to a rectangular pattern

In the previous movie, we created the model you see on the screen. To begin, we're going to double-click on Rectangular Pattern To begin, let's look at some of the other options here for spacing.

Adding intelligence to a rectangular pattern

In the previous movie, we created the model you see on the screen. We covered how to create a basic rectangular pattern. And now what we're going to look at is how we can take that basic rectangular pattern and look at some of the distance options that we didn't cover in the previous movie, but also look at how we can add intelligence to this pattern, so that when the model changes, the pattern can update accordingly. To begin, we're going to double-click on Rectangular Pattern 1 in the browser to edit that feature.

Essentially what we've done is brought back the creation dialogue box that we used to create the initial pattern, and we can make changes to this pattern and update the feature so that the model reflects those changes. To begin, let's look at some of the other options here for spacing. I'm going to look at Curve Length really quickly just so you can see what it does. If we set our spacing to Curve Length rather than the default of Spacing, then you'll see that the distances is removed or grayed out.

And it's set to the current value of the part underneath it, which is eight inches long. The problem we have with the Curve Length option here is that the original hole is offset by half an inch and therefore the final hole is also offset by half an inch. And that really doesn't work in this case. Typically, you only use the curve link option when you sketch a rectangular pattern or some geometry to define the directions and you dimension those distances on those sketch features to drive the overall length of the pattern.

It's not something people do very frequently so we are going to skim over that and move back to the distance option. Now when I select the distance option, you'll notice that it enables that eight inch value again. But, if we set this back to 1.25 which it was at in the beginning, you'll notice that rather than the spacing being 1.25 inches between each hole, the overall length of the pattern now is 1.25 inches. So the distance between the first hole and the final instance in the pattern is 1.25 inches.

The other item you'll notice is here, is you can have different options for spacing, for each direction. If I set this option to distance, you'll see that now, the overall row height is matching this 1.5 distance. I'll go ahead and set this back to spacing and we'll go ahead and use the distance option here. Now, I could enter a value of seven and you can see the pattern updates, and what we've essentially done is created a very even pattern; it's centered perfectly, but we haven't really improved the intelligence, because if we were to go back and edit this model and make a change again.

It's going to read this seven value as, as a constant number, and therefore it won't update based on the underlying geometry. Now, we're going to look at something we've already seen in the earlier movies in this course, specifically in the parameters movie. What I am going to do is show how we can use a parameter to add some basic intelligence to this pattern. If we use the Flyout menu to the right of the distance, we have the option to measure items and we also have the ability to show dimensions. I'm going to select show dimensions by left clicking on it.

And what it does, it allows us to hover over the model and select a feature and temporarily display all of the dimensions that drive that shape and size of that feature. You can see here that we have the overall length-distance of eight, we have the height of four, we have the extrusion distance of one, and we even have a draft angle that we didn't apply to this default value, which is set to zero. So what I'm going to do, is I'm going to select my seven value and just like in the parameters movie, I'm going to simply hover over the dimension I want to link to, and left click.

And when I do that, you'll notice that the seven has now been changed to D-zero which is the name of this parameter or this dimension. It's the variable that holds the value eight for this dimension. And the reason I want to do that, is now, if this dimension changes, it'll automatically update this D-zero. And what we can do here, is enter a very basic formula. We can enter minus 1 and you'll notice now that the preview has worked its way back into the model.

Let me go ahead and back that out. Let me hit backspace a couple of times. And you'll see that, again the preview is hanging off the model here, but as soon as we enter the minus 1 value, what's happened is this D-zero which is equal to eight has one inch subtracted from it. And therefore the pattern is centered on the model again. The main difference now is if we hit okay, and the model looks correct. We can go ahead and change that underlying feature.

In this case 1, by double clicking Sketch 1 in the browser, double clicking on the 8 value and entering 6. Hitting Enter on the keyboard to update that. And when we hit Finish Sketch Now, rather than those holes hanging off out in space, you can see that the pattern has been updated so that all five instances of the hole fit evenly on the bottle. And we can change this to any value we want. And that's the beauty of adding the intelligence into the feature, is even if we hit seven and hit enter on the keyboard and only update to seven instead of eight, you can see the pattern updates accordingly.

Show transcript

This video is part of

Image for Inventor 2014 Essential Training
Inventor 2014 Essential Training

90 video lessons · 2505 viewers

John Helfen

Expand all | Collapse all
  1. 1m 24s
    1. Welcome
    2. Using the exercise files
  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
    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

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