3D Printing and CAD for Robotics

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The discussion revolves around a student tasked with designing a robotic arm for an underwater robotics team using 3D printing and CAD software. They are currently using Autodesk AutoCAD but find it complicated and are unsure if it's the right choice, considering alternatives like Autodesk Inventor and AutoCAD Mechanical. The student emphasizes the need for CAD software that can run simulations to ensure proper gear placement and sizing before printing. Other users suggest exploring ProEngineer and Solidworks for their advanced features, including animations and stress analyses, while noting that these options may be more expensive. Overall, the student seeks guidance on the best software and tutorials to effectively complete their project.
jonahsaltzman
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Hello!

First post here at the forum. I am a member of the underwater robotics team at my school, and I have been put in charge of building the arm. I won't get too specific about the design of it, but it will include gears, motors, and stuff in between. Luckily enough, my school owns a 3D printer that I can use. My supervisor told me that a good place to start would be to design the arm in a CAD program, and then print each piece of that design with the printer. So I got Autodesk AutoCAD, which is the most complicated program I have ever used. Is it even the right program to use for this project? I also noticed an Autodesk program called "Inventor", and another called "AutoCAD Mechanical", both of which seem like they may also be able to do what I need. I am really lost here; should I be using any of these programs? And if so, could anyone maybe point me to a tutorial specific to my project? I tried a couple of more general tutorials, but they were either too simple (explaining the user interface) or too advanced (stuff I have never heard of and which do not apply to my needs). The reason why I don't want to simply use a 3D modeling program like Blender is because I know that many CAD programs can run simulations of your design, which would be of great use to me, as I need to know if the gears are placed correctly, are the right size, etc., before I go ahead and print all the pieces. Does anyone have any suggestions as to where I should start with this project? I don't even know what software to use. ANY help would be greatly appreciated. Thanks!
 
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I am not much of a CAD person myself but several of my friends use ProEngineer at my university. I have seen them do some pretty cool animations and stress analyses using this program. It might be something worth looking into.
 
ProE is good. Solidworks has some nice tools. Some of our engineers use Siemens/UGS software. Most of the better CAD companies make moduals for doing 3D modeling including animation and stress analysis. However, they are a lot more expensive than the basic software you are looking at right now. definitely worth looking into if you are looking to do this for a living.
 
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