Recommendation of a Strategy - Illinois Institute of ......Overview This tutorial will show you how...
Transcript of Recommendation of a Strategy - Illinois Institute of ......Overview This tutorial will show you how...
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CAD Assemblies Academic Resource Center
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Overview
➲ This tutorial will show you how to do basic assembly work using parts in CAD
➲ This tutorial assumes you know basic CAD, including sketches, extrusions, cuts, and how to make basic parts
➲ This tutorial uses SolidWorks, but it can also be followed in AutoDesk Inventor, which is free to students
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Why are Assemblies Important?
➲ Assemblies are collections of parts put
together to create and entire machine. The important thing about assemblies is that they allow us to see how parts interact with each other, if they will fit, how they cause each other to move. Without being able to do assemblies, we really can't do any design work in CAD
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To demonstrate how to make assemblies we will be making a basic crank from some simple parts you should be able to make on your own. Heres the first, a plate with a hole in it.
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Development up to present
➲ Development made up to the current situation
➲ Important background information
➲ Original forecasts which turned out to be wrong
➲ Original forecasts which turned out to be true
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Potential Alternatives
➲ State the alternative strategies
➲ List the pros and cons of each strategy
➲ Give a forecast of costs
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Recommendation
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Why do we align the origins?
It is important to note that the first part you put down is a base part, from which we build the assembly on. It is unmovable inside the assembly. (E.g. if we we're building a car this would be its frame as this is the part that all the other parts are built into). Aligning the origins makes the assembly easier to manage.
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Number of Mates
Think of mates as mountain climbing. In order to maintain a sturdy grip on a wall it is recommended that you maintain three points of contact. The same is true of parts. One mate allows a part to move in two directions, two in one, and three in none.
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Is this really necessary?
For this particular assembly, no, not really. But it demonstrates a point. The software can reorient a part to make a mating work, but only so much. This is necessary for more complicated parts to get the software to make the assembly work without errors.
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Remember, practice makes perfect. The more assemblies you do, the better you'll understand how to contrain things.
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References
➲ SolidWorks tutorials [which are included with any basic SolidWorks package]
➲ AutoDesk Inventory, which can be found at:
http://students.autodesk.com/ free for
students
➲ The AutoDesk website also now has an extensive collection of tutorials that can be used for the Inventor software
➲ Prepared by Adin Goings