30 Jun

RoCo Familiarization: Rapid Design and Fabrication of Rigid Structures

Daniel Maldonado Naranjo rocolib roco

Last week (06/20/2022 - 06/27/2022) I went through the RoCo code and library to familiarize with existing structure configurations. I wanted to experience the claimed ease and speed of building robots/robot structures RoCo for myself.

Setting up RoCo was took much longer than anticipated as certain libraries were not being imported when running the setup file. This was only an issue for myself, and I was able to circumvent this issue by manually importing those missing libraries. The issue was resolved after I updated my python interpreter.

Upon getting the RoCo library to work, I ran the die tutorial with my own dimensions. I designed a 2.75x2.75 x2.75 in cube in RoCo. As I wanted to get the user experience of cutting and folding the structure I sought out help on how to use the CAMEO printers to paper cut the die structure. I learned that [silhouette studio] (https://www.silhouetteamerica.com/software) is needed to be able to print and cut the design. I had issues connecting to one of the CAMEO printer's in lab and was advised to update my version of silhouette studio, but that did not fix the problem. Thankfully I was able to use another CAMEO in the lab and was able to print my cube.

Silhoutte Studio Parameters for Cube

  • Cutting
    • Parameters: Speed 4 Force 20
  • Scoring
    • Parameters: Speed 3 Force 5
    • Scoring is used for indicating locations where paper needs to be folded.

IMG_20220624_134553-01

My cube dimensions were too small which made it difficult to assemble. There was great difficulty in slotting in flaps into the open indentations.

After a first trial with the cube, a rectangular prism was cut out and constructed.

Silhoutte Studio Parameters for Rectangle

  • Cutting
    • Parameters: Speed 3 Force 25
  • Scoring
    • Parameters: Speed 2 Force 6

IMG_20220629_162939

This choice of parameters produced better scoring than the ones used in the cube design. Once again, constructing the prism with the flaps and slots was a bit challenging but was much easier than the cube (higher proficiency as I had made a cube design previously). As more structures are created and built, I am sure better ways of slotting in folds to slots will be found to make the assembly process easier.

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