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Assignments

Part I

  1. Design a machine that includes mechanism+actuation+automation+application
  2. Build the mechanical parts and operate it manually
  3. Document the group project and your individual contribution

Part II

  1. Actuate and automate your machine
  2. Document the group project and your individual contribution

Individual apport

I took care of the design stage from the ideas we had in common and made the form of the machine. Then we separate the mechanisms in 2. Where I was in charge of making the base mechanism roll, and stop where it was required. I did the update after the presentation to improve the machine. Also I was in charge of making the presentation material.

Machine Design

the FLIP architecture Scanner


We enjoyed week 4 3D scanning task but didn't end satisfied with what we saw potential to scan in architecture. So we thought about making a set for scanning objects but that also could scan spaces. Check the group page!

t h e i d e a
idea
the idea

  • The idea was to make an scanner that not necessarily will go for the circular form in all of the axis. We tought the circular base takes out scanning space for the back.
  • Also, when thinking about scanning objects there is always the problem of not taking the same height you took a minute before. So we knew we need a support from upside down vertical to try not to miss any spot.
  • And finally we also thought about scanning spaces. Scanning an object is for the inside but for the outside you always have to carry the handyscanner walking and spinning. So, why not just flipping the object scanner and make all the axis rotation work fot the outside?

  • idea
    brainstorming in the lab
    t h e d e s i g n

    The design I was in charge of took the concept of the circular all axis to the very base form. As designers both wanted an smooth result of a machine like a finish object. So I tought about making a half circular arm and base that rotating makes the complete circle.


    idea
    the idea

    m e c h a n i s m s

    This scanner needs to solve the problem of scanning the back of the object twice and to scan spaces. That is why we divide the mechanism in 2 big parts:

      idea
      1. the arm

        Where the phone will go up and down while rotating around the object. For this piece we designed a kind of slot that can guide the movement piece around the arm and that can support the curve.



      2. the base

        The piece of the base needs to support the rotation of the arm AND the support for the object that does not move.





      The challenge for the base was to have a base that could rotate WHILE ALSO stay in its place to support the object in the inside mode.. That is why at the end we put a kind of support that also indicates the future programmation that the scanner has end its circuit.

      Rotation GIF
      Mechanical test of the base rotation
      Rotation settings reference image
      Design reference for rotation settings
      p i e c e s


      The final pieces design was


      f a b r i c a t i o n

      I 3D printed the base and the rotation components. Ernesto assembled everything. The stepper motor fits inside the base, but to prevent it from sitting directly on the desk alongside the scanner, we had to add an extra piece to elevate the base.

      Stepper Motor
      Stepper motor used for the base rotation
      Base Fabrication
      Base fabrication
      Acrylic Base
      Acrylic base fit for the stepper motor

      First test of the base rotation with the cellphone holder:

      I still have to fix the bouncing at the end of the rotation cycle. And also programm the motor to rotate every certain times of each angle determine by us.


    P R E S E N T A T I O N

    I made the slide presentation where is explained all the mechanisms, parts and process of the flip scanner.

    And the video where th process is shown from the idea and fabrication to the final tests.


    What's next?

    I have to personally see the code for the base rotation since I could not make it to the day the programmation was made.

    Stops

    Also I need to still look at the rotation angles because the idea was to stop at least 10 times to cover exact angles that we can manage depending on how many times we want the photo to be taken can work better and avoid that bouncing at the end. Also take some final tests videos with everything assembled till the cables.