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I wonder how the shells of robotic arms are usually made. By the shell, I mean this:

enter image description here enter image description here

This is taken from the project here, which is a University project. If the shells were injection moulded, how would a university project have sufficient funding for the moulds? Even if the work was contracted to prototyping companies, it'd cost a few thousand of dollars for just one part. If not injection moulding, how are the shells made?

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  • $\begingroup$ The image might be from a university project, but the arm is from Kinova: kinovarobotics.com/en The Arms from UR (first image) are aluminum tubes. $\endgroup$
    – FooTheBar
    Commented Mar 25, 2019 at 15:32
  • $\begingroup$ The university project was probably not to build a new robot, but to use an existing one for a specific task $\endgroup$
    – 50k4
    Commented Mar 26, 2019 at 12:39

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To complete the comment of @FooBar on the Jaco Arm (The one from the Video), it use Carbon Fiber as links

The old ones also used Plastic links with carbon fiber paint effect

You can copy the carbon fiber effect easily if you need it.

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In the case of Yaskawa Motoman, Rethink Robotics, Kuka, Fanuc or ABB the shells are cast (aluminium in most cases). Older (Kuka) industrial robots have a welded steel structure casing, but you rarely see operational ones with welded steel structure.

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