Join Gabriel Corbett for an in-depth discussion in this video Reference geometry, part of Cert Prep: Certified SOLIDWORKS Associate.
- Sometimes, while working with more complicated assemblies, we're going to need to add in some reference geometry. Now adding reference geometry to assemblies is almost exactly the same as adding it to parts. So you click under the reference geometry tab right here at the top, under assembly. Notice I have plane, axes, coordinate system, point, center of mass, and mate reference. So starting off with plane, most of the time, when you create a plane, it's going to ask you for certain references that's going to be a plane, a point, or a line. If I just choose one of those, I can choose a plane and it just makes an offset from that plane.
If I end up choosing a couple of different things, it's going to allow me to hinge that off of a certain, or maybe put at an angle to something, that I can adjust this angle here by saying this face. I'm giving it a 138 degree angle from that edge. It's rotating around that edge, so that's a couple quick ways to add reference planes to your part. I can also add planes by choosing individual points. If I cancel out of that and do it again, I could say I want a plane, and I want this plane to be between this point right here, this point right here, and that point.
Oh, hold on. So I got a selected face by accident. I wanted to choose a point right there. It keeps wanting to choose that face. Let's spin that around, and choose not this line here, but this point here, and this point right there. So there's my three points you can see, and I've created a plane between those. So a couple quick ways to create some reference geometry. Jumping back up here to reference geometry, let's choose axis again. This time I have a bunch of different options of how I want to create this.
Do I want to want to create it along an axes that's already existing, an edge, or a line, two planes, two points, a bunch of different options here. One of the quickest ways is creating like a axis just right in the center of a cylinder. Sometimes you might want to spin or rotate around, something like that. I can create that axis just that easily, so, bunch of options for creating those, and make sure if you're not seeing them, click under view, and make sure you're seeing axes, or view and make sure you're seeing planes. There they are. Reference geometry one more time, coordinate system. For some reason if you needed to move the coordinate system in your model to something other than where the origin is, I can choose a point, so say up here this point right, let's see.
Let's try this point right over here. Make sure I'm choosing the point and not actually the plane of the line, and you can see the -X-Y-Z- coordinate system. Then I can define where I want my X coordinate system to lie along, so I'm gonna choose this edge right here. Notice it angles down to that, and then my Y coordinate system, I'm going to say I want my Y going in this direction right here. So I'm going to choose that edge. Now I can flip any one of these. So I have Z going up, I can have X going this way, and I have Y going that way. So, get the coordinate system in the right orientation that you're looking for around that point.
Click on okay, and now I have a new coordinate system here. Now, if I want to, I can go over here to mass properties, and I can define these mass properties or the center of mass around a coordinate system. So by default, it's just choosing the origin, but I can also choose this new coordinate system, and as soon as I do, notice the center of mass change, in relationship to that new coordinate system. So that's one reason you might want to create your own coordinate system. Once you're done with that, cancel out. Okay, and then under reference geometry again, I can just add a point, or I can even add a center of mass to the design, and you'll see center of mass, you click on view, show center of mass, and you can see it's right there.
It's kind of a handy little thing to keep on your model so you can see where things are in relation to the center of mass, especially if you're trying to balance something out. So those are your basics for reference geometry, and the last one I didn't cover would be this point, and that's all that is, just going to be defining a point, using either an arc, or a center of a face, or intersection, or projection, so in this case here let's click on center of face, and I'm going to choose, I'm gonna choose that face right there, and notice it gives me a little point right in the center, and now I have a point I can define something around.
So that's the basics for reference geometry, adding it to an assembly, and again I can do exactly the same thing by adding it to a part.
Along the way, he'll cover creating effective sketches, using equations to modify parts, weighing parts, building assemblies, assigning the correct materials and units, and creating drawing views. At the end of the course, there are two sample exams to practice what you've learned.
- CSWA requirements review
- Working with sketch entities (Line, Circle, Rectangle, and Arc)
- Making offset, convert, and construction lines
- Reviewing the boss and cut features
- Sweeps and lofts
- Smoothing corners with Fillet and Chamfer
- Creating linear and circular patterns
- Dimensioning techniques
- Setting mass properties
- Selecting and using materials
- Inserting components
- Setting up reference geometry
- Establishing standard drawing views
- Annotating your drawings