Join Gabriel Corbett for an in-depth discussion in this video Problem 3 Review, part of Cert Prep: Certified SOLIDWORKS Associate.
- In this movie, we're going to be reviewing Sample Exam Number Two, Question Number five. Now, we have to build these three different components that builds the assembly. So let's go ahead and take a look at how we did those. Notice the material is 1060 Alloy, which is aluminum, and it's used for all the different parts. First things first, here's my assembly. You can take a look at how it's created. And let's go ahead and open this part here. And notice I chose this front corner here as my origin, and that's really important, because if you look at the question, notice the available answers.
Notice they are all very, very similar. Negative 30, positive 30. Negative 30, positive 30. Negative 40, positive 40. Negative 40, positive 40. So really, this question is asking us if we know how to define this origin and make sure our directions are correct based upon this drawing right here. So that's going to be very important where we specify that origin and the directions. So let's make sure that we're choosing that correctly. Alright, back to our part. It's defined right here. Pretty basic.
Notice this part is symmetrical in both directions. So I chose to just define one quarter of it and then use two mirrors. So I'm going to go up here. I just drew this one section here. And this will definitely save a lot of time on the exam, if you can notice symmetry and just go ahead and create a very simple sketch off of one corner of the part. Extrude that out, and then I use what's called a body mirror. So you go in here. I chose the Bodies to Mirror. I chose this inside face here and just chose to mirror the entire body over.
And then, once again, one more additional mirror. And, again, I chose this whole body down here and mirrored it over. So there's that part. Take a look at the next part here. Again, there's some symmetry here. So if I roll this back, I only have to define one half of this part. There's my sketch. Okay. Pretty straight forward.
Extrude that out. I did a Boss Extrude here. Notice I did 10 millimeters, which is half the thickness, and then I defined a mirror going this direction, and then a thickness mirror going that direction. What that gives me is the origin right in the center of the part. When I go ahead and do this Cut Extrude at the very top, I happen to have the origin directly in the center of the part, so it's very easy to choose.
Alright. And the last part here. It's just this pin. Now this could be revolve or an extruded part. I happen to do just a basic extrude. This one and I did another extrude here. I use the same surface for both of those. And then I say a cut from the side. And the cut, I happen to draw on that front plane, and then I did a Cut Extrude. Then I chose Through All Both Directions. So I'm cutting from that center plane in both directions, through the part.
Once you have all those, let's go ahead and build the assembly. There it is. And, again, we want to verify that this front corner, right there, is our coordinate system. And we want to make sure that one, we have X going this way, Z going this way, and Y going up, and that's exactly the way we want to bring it in. For some reason, if you didn't have those set up correctly, we can always go up to Reference Geometry, Coordinate System, and then choose this corner, at that point, define the X axis.
I want it going this way. Define the Y axis. I want it going up. And notice as soon as I do that, it flips around. So I want to make sure that Y is going up, X is going to the right, and Z is coming out of the page. Let's go back and verify that that's correct. So they have Z coming out the page, they're specifying X negative is going to the left, but we have X positive going to the right, and then they're specifying Y negative going down, which means, Y positive goes straight up. So, we do have it correct. There's our coordinate system. Click okay.
And then I can go over to Mass Properties to define the center of mass. And I can choose either the default coordinate system or the coordinate system one. Now, they happen to be in the exact same location, because I had it specified correctly in the beginning, but if you didn't, make sure you're choosing your new coordinate system to define the center of mass. So notice I have 30, 40.16, and negative .53. Let's go back to the question and verify that we do have answers that are very similar to what they're looking for. In preparation for the exam, definitely go ahead and create all three of these parts, build this assembly, and again, find the center of mass and verify that you do have the right location for that center of mass, and make sure, again, that the orientation, as well as the directions of that location, are correct.
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