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Ellipsis is the official blog of Autodesk's Technical Evangelist Team. We will discuss all things design and manufacturing related with a focus on industries such as automotive and transportation, consumer products, industrial machinery and building product manufacturing and fabrication. We also have resident experts who will blog about specific product developments in CAD, Simulation, Industrial Design and Data Management.
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The same, but different...
October 1, 2009, 09:30 AM Jay TedeschiThe same, but different... let me explain. So, the same problem we were discussing for the last couple of weeks, namely, working with data from other sources. If you recall, I had covered working with data from a vendor from whom I was buying components for our re-design. This week, the problem is the same, but different in that in this case I am working not with a purchased component, but rather with an assembly that was created with a different design tool than the one I happen to use.
In the best of conditions, this presents something of a challenge, but when we find ourselves needing to change the design in some way, the level of complexity quickly increases. Autodesk Inventor Fusion was built from the ground up to facilitate the toughest of these type of design challenges. In this, the first of several posts featuring Inventor Fusion, we will take a look at some basic assembly manipulation and modeling techniques.
If you remember last week we finished up working on the Caster Wheel "Assembly" that we downloaded from our vendors web site. Well now we are going to work on the brake assembly that attaches to two of those wheels... this was originally created in Pro/E, which is not a problem for us as we can open the .asm file natively. Once open we can see that the existing torsion spring is not going to work in our new configuration, so we will select the body from the assembly, and then from the marking menu select "Isolate" to suppress all but the spring.
I can now make several non feature based edits to this part, quickly and easily. As these changes are symmetric, I will split the part, then correct for rotation and position with the Move command. Here I am moving the body along its mount axis so that it fits correctly in the bearing block.
Now we can address some of the feature lengths, but again, not via a feature edit, but rather with a direct manipulation of the feature face. For example, as you can see in the figure above, the length of this element is a bit more than is required, so Press/Pull functionality is used to select the capping face and then press into the model, shortening the element. As we split and then moved the entire body away from the center plane of symmetry, the split face is now short of the center plane by the amount of that first move. Press/Pull is used here again, but in this instance I will select the symmetry plane after picking the capping face, and the pulled face "snaps" to that plane.
Finally, the corrected spring is mirrored about the symmetry plane and the assembly saved for use back in the top level assembly.
The thing that really hits you with Fusion is how absolutely easy it is to use. The entire edit sequence shown above took no more than a couple of minutes... Don't take my word for it... check out the entire session for yourself in this video I shot. As always, if you have any questions or suggestions I would love to hear them.
Ciao'
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