Author Archive

CLASS – TECHNOLOGY, 3D Printing

SOFTWARE: Rhino 6, Voxelizer, Polygon, Polulu Master Control

MATERIAL: PLA & ABS 1.75 mm, bolts, screws

MACHINE: Z-Morph, Picaso Designer 250 Pro, Raise 3D

CHALLENGES: To make a 3D-Printed thing


TASK / PREPARATION

The task sounded quite simple: create something 3D-Printed. The teacher suggested making this robot for extra credits. I accepted the challenge.

The robot and all the files I took from the Instructables: https://www.instructables.com/id/EEZYbotARM-Mk2-3D-Printed-Robot/

DESIGN / PRINTING / ASSEMBLING

I transfered all the .STL files into .gcode and Polygon files to use two 3D printers, that we have in lab.

Unfortunatelly, something went wrong with Picaso Designer, that is why there was only one printer left.

PLA on Extruder of Picaso =(

I coninued printing all the parts on Z-Morph. There was a problem with the quality, that is why I got really easy-to-break details.

Low-quality deatil of the base.

The time of printing also was not so good for the details, that is why I had to print them in other places by ABS.

ABS-printed details.

ASSEMBLING / CHECK

After all parts printed, I started assembling all the details together. On the photo of ABS-printed details you can see the assembled base.

Assembling the robot

In 2 hours the Arm was assembled.

Assembled robot.

The next problem was controlling the servos.

I am using Pololu Mini Controller, that needs the outer power supply to have enough voltage to move all 4 servos.

RESULTS / REFLECTION

It was a nice challenge for me and the quality of parts, their brakings did not stop me. I went to different places to reprint the needed details, servos.

Total expendutre on the project: 5000 rubles (including servos, Pololu and 3D-printing).

It is not easy to control the robot with Pololu application. I am going to write an app to control it by the phone via Bluetooth. Also, it is possible to make it work with Arduino.

As an overall result, I have a robot-arm and knowledge of 3D Printing by different printers, connecting the servos and some coding.

CLASS – TECHNOLOGY, LASER CUTTING

SOFTWARE: Rhino 6, LaserWorkV6

MATERIAL: Plywood 100*100*4 mm

MACHINE: Laser Cutting Machine Raylogic AS-1290C

CHALLENGES: Create something press-fit


TASK / PREPARATION

The task sounded quite simple: create something pressfit using plywood. This task had a goal to develop our skills in Rhino and Laser cutting.

As far as we had only one material and small size of this material, I decided to make a two-sided keychain to make people on the streets happier. I had an idea to write something inspirng, which ended in “Hey, You! Smile ;)”.


DESIGN PROCESS

The sketch of the key chain came into my mind in the metro, so I decided not to waste my time and draw it in Rhino.


LASER CUTTING

After saving my file in .dxf format I passed to the computer, which is connected to the Machine. I open the file with “File – Import” and placed it on the “surface” of the Laser Cutter.

I had to make two layers:

  • general layer of cutting (Speed 9mm/s; Power 95.0);
  • layer for “printing” (Speed 200 mm/s; Power 30.0).

First layer cutted the key chain itself, second one was slightly burning the plywood to “print” the letters.

“Printing by Laser cutting machine”

Because of the problems with the machine, I had to cut it twice. Because of that, the size of connecting sticks was smaller than the holes. I had to use glue to connect it.


RESULTS & REFLECTION

As a result of the work, I created a key chain, which is actually is not a press-fit thing. The idea itself was not a press-fit from the start.

Laser cutting is a simple and cheap (materials) technology to create prototypes.

The task allowed me to understand the main principles of working with Rhino and the laser cutting technology itself.

As an overall result, I can now give people another reason to smile, when they see my key chain on the backpack.


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