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  • Author Author: balearicdynamics
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PiIoT - The perfect reading place #13 [tech]: Art-a-tronic, the base and motors holders

balearicdynamics

Introduction

This is the last part of the sub-project Art-a-tronic created in cooperation with the artist Lorenzo P. Merlo. In the previous posts we saw the design, 3D printing and testing of the top structure, the more complex part of the assemble. The referred posts are listed below:

PiIoT - The perfect reading place #7 [tech]: Art-a-tronic, mechanic design

PiIoT - The perfect reading place #8 [tech]: Art-a-tronic, setting the moving parts

PiIoT - The perfect reading place #9 [tech]: Art-a-tronic, mechanic test

Now we see the base design creation and simulation composing the final structure.

Designing the motors

The easiest way to design the base and position the  GearBest stepper motors has been creating them with CAD and inserting in the Art-a-tronic model design.

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Based on the motor sizes from the data-sheet a 3D CAD model has been designed as shown in the image below

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The design has been simplified keeping the correct dimensions as in the real device. The following images show the motor with the 3d printed flexible joint when it is assembled.

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According with the other parts sizes and heights the M3 threaded bar generating the vertical movement of the moving components will be 7cm.

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At this point after creating the base parallel to the top the motors has been positioned then the supports bas been created to sustain the top. The following image gallery shows in detail the base and the other layers in the assembly simulation.

{gallery} Art-a-tronic simulated layers

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The all-layers structure as they will be when assembled.

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Top support removed. Note the moving supports (upper gray) that will be on top of the support and the fixed supports parts (lower gray) connected to the base columns

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The fixed supports. Note that the base links are also the moving top parts supports for the cylindrical guides

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The base with the fully assembled motors in place

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The base support

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The base supports. Note that the full base is divided in four sectors as well as the top building.

Parents Comment Children
  • in reply to fvan

    Hi Frederick!

     

    It's almost easy to calculate ... Design finished yesterday evening around 6 p.m. Then made a very small change (nothing worthy to notice, just removed some base unneeded surface here and there) and at 7 p.m. first piece started printing. Every piece needs about 6-7 hrs so this first (one of four) has been completed tonight and I found it finished this morning. Today I plan to have time to print other two, Tomorrow the last will be printed.

    Before the end of the weekend everything should be in place with motors and tested. Hopfully things will work, or maybe some small change should be applied but I don't plan to have big parts to be reprinted.

     

    The plan is to have this sub-project closed on the end of the weekend. In the meantime other parts are proceeding.

     

    Enrico