Join Thom Tremblay for an in-depth discussion in this video Part modeling 1, part of Cert Prep: Autodesk Inventor Certified Professional.
- [Instructor] This will be the first of two lessons covering the Part Modeling Certification objectives. In this video, we'll focus on projecting geometry from the model into the sketch to be able to create additional features, like the extrude feature, which will also focus on creating a couple of different examples. We'll modify a part using the Direct Edit tools. The shell feature will be saved for a later lesson. For this lesson, I'll focus on the bottom of my oil pump, the lower section.
This is the housing for our oil pump. What I need to do is define the channel that will help to draw oil up from the pan into the pump itself. First, I'll activate the part, so that I can make modifications to it. You see the browser changes and the ribbon changes. I'll start the Extrude tool. Select just the circular profile, and begin dragging down. Now to establish the height, what I want to do is make sure that I go five millimeters pass the overall height of this lower plate.
To make sure that I do that, I'll take advantage of Parameters. I'll show the dimensions used to define this extrusion, and select the dimension. It will plug in the value of that dimension and, as I mentioned, I'll add five millimeters to it to establish the depth of the cut. With that finished, I'll restart the Extrude tool, select the rest of the sketch. For this portion, I only wanna cut one half millimeter into my body.
When I'm done with this sketch, I'll turn the visibility off so that I'm more easily able to see what I'm working on. To get the proper transition for my ramp, I need to angle this face. I might try applying Draft, but what I'll do instead is I'll use the Direct Editing tools. Direct Editing offers several options, for scaling, re-sizing, moving faces, rotating, or even deleting faces.
For my needs I'll try Rotate. I'll select the face that I want to rotate. The Locate the Tool on my axis at the middle. Once I have it, I'm able to pick which edges or how I'd like to rotate. I'll pick this lower element and click and drag, and it will give me a preview. I'll tell it that I'd like to rotate 20 degrees, and apply the tool. I'll finish using the tool and see that it's formed a ramp down into my extrusion.
With that complete, I'll take a look at my browser again, and move my End of Part marker below a sketch. I'll turn the visibility of the sketch on, and activate it. The circle on this sketch represents the diameter that I need to maintain for the inside of my oil pump. I'll project the geometry of the outside of the pump by selecting the edges. I could select the face, but that would also bring in edges that I don't want.
I'll finish my sketch, start the Extrude tool, selecting the portion that I need, and extruding that up 40 millimeters. Complete my work, and again, turn off the visibility of the sketch. A final touch for this model, selecting the top face and selecting what would also be a finished interior for the oil pump. I'll just change the finish to steel to help me keep track of what portions would remain cast and what portions would need to be machined.
- Certification tips
- Working with project files
- Modeling parts
- Advanced modeling features
- Designing with sheet metal
- Controlling assemblies
- Applying weldments
- Building presentation files
- Editing drawings and views