Join Gabriel Corbett for an in-depth discussion in this video Problem 1 Review, part of Cert Prep: Certified SOLIDWORKS Associate.
- In this video, we're going to be reviewing the first question on sample exam number two. Now, first thing's first, before we do anything else, let's make sure that we set up our unit system with millimeter gram second, with a two place decimal, and choose the right material, which is copper, and verify its density of .0089 grams per cubic millimeter. All right, I have several different views on this sheet, as well as the next page that I can look at, for reviewing and building this part. Now, I find that one of the hardest things to do in building this part is actually pulling the information from these drawings.
So, let's make sure we carefully review both of these drawings, as well as use these values here, which is the A, B, and C values, and you can see they've already been placed in these drawings here as A, B, and C, and the thickness, and then go ahead and create our part. So, let's jump over to SolidWorks, and here is the very first view. So, I'm going to jump out of that real quick, and show you how I got to that point. So, I'm going to take the history bar and roll it all the way forward. So here's my finished part, it's what it looks like, I can roll it around, and you can see what this part looks like.
Now, I'm going to take that history bar, and I'm just going to grab the history bar and roll it all the way back to the very first feature, and there it is right there, and then take a look at that sketch. All right, looking straight at that sketch, you can see I just pulled those values directly from the sample question, built this part. The only difficult parts here were this little intersection here between this line and this line. You'll notice I created a circle here, and then just trimmed a little section off of it here to make that connection. That was one of the more complicated things on this part here, is figuring out how all of this came together.
As soon as you have that ready to go, let's go ahead and exit out of that sketch. I did a boss extrude, of 50 millimeters. Next, we did a cut extrude, and just removed this material inside of here, so what I did there was, if you'll look at that sketch, is I just did a convert entities on this line right here, and then added a couple of extra lines so I was able to cut out this little section. And then, as far as the end condition there, if you'll look here, I did an offset from surface, choosing this far surface here, of eight millimeters.
All right? The next feature, if you go down a little further, is this cut here. So I did again, a circle... Inside circle, outside circle. This outside circle I just made it coincident to this point right here, so it's exactly the same size from those first features we defined, 20 millimeters here. If you look at the drawing, you'll see it's actually called out as a 10 millimeter radius, but because we're defining full circles, I doubled that for the diameter. All right, once you have that, notice I did a cut extrude there, and I did the full depth of 13 millimeters.
Going one step further, another cut extrude, this time cut was just the shape here, so I was very easily able to get that shape here by just clicking on the surface here and clicking on convert entities, to get that entire shape, and then just did a cut to remove that material, down to the correct height. Boss extrude, so right in the center of that shape, I just drew one circle, 10 millimeters, and extruded it up to the surface. So the surface here, I said up to surface, and I just choose this outside face.
Okay? Next is this cut in the back. To find a radius of 20 millimeters, and the height directly from the drawings, and everything else is pretty self-explanatory in that one. And then, as far as the feature, just a blind cut of nine millimeters directly from the drawing. All right? One step further, there's a hole. Basic hole to find off this front edge here, as well as this front edge here, 10 millimeter diameter, and then a cut through all.
This back side trim cut, what I did, I started on this back face here, made this drawing here, and then just cut through everything. Trim that off, and then finally, this last cut here, pretty straightforward. Directly from the top, so let's take a look at that sketch, normal to through all, and again, finishes out the part. Once I have all the sketches and cut features done, I can come up here to weigh the part, verify that my density is correct.
Now, notice it says .01, and that's not exactly what we're looking for, so make sure we go to Options, and verify the material. They gave it to us in four place decimals, as far as the weight, so let's verify that it is .0089, but the mass in grams, we don't want four place decimals. We only want two, so go back, change that back down to two. 1280.33 grams is what it should weigh. We can verify that against the answers in the back of the exam, and it is correct.
So that is the way to build that first part on the exam. Now again, this is a fairly difficult part to build, mostly because it's a little bit difficult reading the drawing, and there's a lot going on here with a lot of intersecting arcs and curves. But, that's how you build it. I would definitely recommend going from the sample exam, and trying to build this part yourself, and verify the weight, just like we did in this review.
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