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Linking sketches to other parts

From: SolidWorks 2014 Essential Training

Video: Linking sketches to other parts

The real power of SolidWorks starts to shine when we link one part to another. Auto update based upon that relationship between the two parts.

Linking sketches to other parts

The real power of SolidWorks starts to shine when we link one part to another. If we think about assemblies as a whole instead of as individual parts, we can use one of the parts to drive the others. Think about a jar and a lid. Wouldn't it be nice if we made the jar bigger, and the lid would automatically change size to fit? We can. And we can do so much more. On the screen here, I have 1.4 assembly opened up, and this has got basically a jar, and the lid. First thing's first, we need to decide which part will be the driving part and which part will be the driven part.

In this case here, I'm going to use the jar itself as the driving part, so if I make that jar bigger, then the lid'll automatically adjust. So, you, you don't want to get into a state that you have components that are linked in a chain or in an infinite loop, that as one part changes the next part changes, then it goes all the way back to the original part. That can cause issues with parts linking to each other in a chain, and coming back to the original part. So it's always best to kind of pick one of your parts is going to be the part that's going to drive, most of the other parts and then build from there. To get started, let's take a look at this sketch here.

So I'm going to go ahead and open that up. And I'm going to say Open Part. And you can see it's a basic revolve. I'm going to go ahead and click on the plus, take a look at the sketch, and take a look at what's in there. So pretty straightforward sketch here. Just basically lines, and you can see we have three inch dimension. So that's the dimension we're going to want to change. And then we want the lid to automatically adjust. So in this case here, we're not going to actually touch this part, I just want to go through and show you what's in the sketch. I'm going to close that down, come back up here, back to the assembly. Say yes to the changes, and then open up the lid.

In this case here, I can open the part again, take a look at it. And inside of that sketch, you can see, again, I've got that three inch dimension here, defining the outside of the part, and everything else looks pretty standard. Okay, now is the tricky part. Instead of opening these parts individually, let's go ahead and open them them in context to the assembly. So this case, here, I want to change this part, based upon this part. So, right next to where I'd normally choose Open, I can also say Edit Part. As soon as I do that in the assembly, what happens is the original part over here, the jar turns clear transparent, and it shows me that I'm editing only the lid then I come down here to where the lid is take a look and notice the entire tree for that lid opens up just like we were looking at individually in the part, I can click on the revolve.

And I can open the sketch. So, the first thing's first. You need to determine where is the dimension that we want to drive from the other part. So in this case here, it's pretty simple because there's only one revolve in each part. But in this case, let's go ahead and choose sketch one and click on Edit Sketch. I'm going to click on the space bar to look normal to the part. And now, we've got this hard dimension here as three inches. What I need to do is get rid of that dimension right away. Click on that, hit Delete. And now, I have the ability to grab one of these lines and drag that out, and just double check that that's going to give you the right type of motion as the jar gets bigger, you basically want this to track, and do the exact same thing. Okay? Then instead of adding a hard dimension.

Let's put a dimension here in relationship to the base jar, and instead of the dimension, we can actually add a relationship as well. In this case here, I could take this little point or this line and make it co-incident to this line here. Let's try it out. Click on this line. Hold down Ctrl. Choose this line here. And I'll say, make co-linear. Now those two lines are going to be in line all the time and there's no hard dimension to finding it three. So if this jar gets bigger, theoretically, this lid should get bigger as well. When you're happy with your changes, go ahead and click on Exit Sketch. And you're noticing hey, the assembly didn't change at all.

What's going on here? Nothing changed. Well, here's the power. Let's go ahead and open this part now. Edit that part. Go down to that sketch. In this case here instead of the three inches, let's change it to six inches, 6.0, exit sketch. And then go back to the assembly and notice right away the lid automatically changed size to fit the exact same proportions. Auto update based upon that relationship between the two parts. Now this is only the beginning. You can make this extremely complicated, and you can have many, many different parts based upon one driving part, and you can have parts defined off of other parts and so on.

It can really get pretty complicated. But it really starts using the power of SolidWorks. External references can generate highly automated assemblies that really show the power of SolidWorks. Best practice is to have one main driving part, and have the others reference it. It is possible to create a circular reference, so make sure you think through what's driving what.

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This video is part of

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SolidWorks 2014 Essential Training

97 video lessons · 5766 viewers

Gabriel Corbett
Author

 
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  1. 1m 51s
    1. Welcome
      1m 7s
    2. Using the exercise files
      44s
  2. 31m 13s
    1. Launching SolidWorks for the first time
      3m 55s
    2. Accessing and customizing the Ribbon
      4m 14s
    3. Touring the shortcut bar and identifying essential keys
      7m 27s
    4. Saving, renaming, and managing files
      10m 28s
    5. Working with the new view cube, or View Selector
      2m 36s
    6. New features in SolidWorks 2013 and 2014
      2m 33s
  3. 14m 11s
    1. Understanding the 3D world
      2m 31s
    2. Creating your first part
      3m 15s
    3. The virtual, parametric prototyping environment
      1m 56s
    4. The FeatureManager and feature-based modeling
      3m 43s
    5. History-based modeling and the rollback bar
      2m 46s
  4. 28m 32s
    1. Starting a new sketch
      6m 50s
    2. The six steps used in almost all modeling features
      52s
    3. The Line and Centerline tools
      3m 25s
    4. Using the Circle tool
      1m 51s
    5. Adding and removing relationships and dimensions
      6m 56s
    6. Understanding relationship types
      3m 58s
    7. System options, units, and templates
      4m 40s
  5. 18m 28s
    1. Drawing rectangles
      5m 31s
    2. Creating arcs in a sketch
      4m 8s
    3. Drawing splines in a sketch
      4m 57s
    4. Sketching polygons
      3m 52s
  6. 36m 5s
    1. Trimming and extending portions of a sketch
      3m 54s
    2. Creating offset geometry
      3m 13s
    3. Moving, copying, rotating, and scaling elements
      3m 13s
    4. Erasing, undoing, and redoing actions
      2m 24s
    5. Using the mirror tools
      2m 24s
    6. Creating repeating patterns in a sketch
      4m 55s
    7. Using construction lines to build robust sketches
      3m 25s
    8. Applying fillets and chamfers to a sketch
      2m 32s
    9. Working with slots
      3m 46s
    10. Adding text to parts
      4m 1s
    11. Using the Convert Entities command
      2m 18s
  7. 9m 33s
    1. Working with planes
      5m 28s
    2. Placing and using axes
      2m 22s
    3. Placing a coordinate system
      1m 43s
  8. 17m 50s
    1. Extruding a sketch into a 3D object
      4m 36s
    2. Using Revolve to create 3D parts
      2m 42s
    3. Using Loft to create complex shapes
      4m 40s
    4. Refining a loft shape with guide curves
      2m 22s
    5. Using the sweep to create wire and pipe shapes
      3m 30s
  9. 20m 23s
    1. Modifying parts using the Extruded Cut tool
      5m 42s
    2. Working with the Revolved Cut tool
      6m 19s
    3. Using the Lofted Cut tool
      3m 32s
    4. Cutting holes and grooves with the Swept Cut tool
      4m 50s
  10. 21m 5s
    1. Using fillets and chamfers to smooth corners
      5m 58s
    2. Creating repeating rectangular patterns
      3m 16s
    3. Creating a circular pattern
      2m 27s
    4. Mirroring objects
      4m 0s
    5. Using the Shell and Draft tools
      3m 52s
    6. Scaling parts
      1m 32s
  11. 9m 39s
    1. Working with reusable sketches and blocks
      2m 47s
    2. Creating blocks
      3m 51s
    3. Designing with blocks
      3m 1s
  12. 29m 45s
    1. Understanding the tools for beginning a new assembly
      4m 46s
    2. The basic steps in creating an assembly
      3m 18s
    3. Mating parts together in an assembly
      6m 43s
    4. Working with subassemblies
      2m 9s
    5. Linear and circular assembly patterns
      4m 56s
    6. Downloading premade parts from the Internet
      3m 32s
    7. Using Toolbox
      4m 21s
  13. 15m 8s
    1. Mating parts with coincident, parallel, and distance mates
      4m 35s
    2. Mating parts with width mates
      5m 53s
    3. Mating parts with path mates
      2m 5s
    4. Mating parts by aligning planes
      2m 35s
  14. 10m 20s
    1. Getting started with the Hole Wizard
      4m 38s
    2. Positioning holes in layout sketches
      5m 42s
  15. 15m 27s
    1. Linking sketches to other parts
      4m 28s
    2. Linking to layout sketches
      6m 48s
    3. Using the Hole Wizard in context
      4m 11s
  16. 17m 15s
    1. Understanding threading concepts
      7m 17s
    2. Using a helix and Swept Path to create a thread
      4m 2s
    3. Understanding internal threads
      5m 56s
  17. 17m 25s
    1. Using equations to drive a sketch
      5m 5s
    2. Working with complex calculations
      2m 6s
    3. Integrating Microsoft Excel to manage design tables
      7m 10s
    4. Building assemblies using part configurations
      3m 4s
  18. 23m 17s
    1. Working with drawing templates
      6m 49s
    2. Setting up drawing options and sheet properties
      3m 43s
    3. Choosing the correct projection angle
      2m 21s
    4. Adding model views to a drawing
      10m 24s
  19. 16m 8s
    1. Creating general dimension notations
      6m 37s
    2. Creating ordinate and running dimensions
      3m 0s
    3. Dimensioning holes and curved features
      3m 8s
    4. Using the autodimension tools
      3m 23s
  20. 14m 38s
    1. Creating holes and callouts
      5m 8s
    2. Adding center marks and centerlines to a drawing
      3m 46s
    3. Adding item notes
      2m 57s
    4. Making drawing revisions
      2m 47s
  21. 11m 42s
    1. Adding assemblies to drawings
      2m 10s
    2. Including a bill of materials
      1m 42s
    3. Adding balloons to specify parts on an assembly drawing
      1m 39s
    4. Adding a title block and sheet properties
      2m 8s
    5. Building an exploded view for an assembly drawing
      4m 3s
  22. 1m 2s
    1. Next steps
      1m 2s

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