machines that make machines

group work

This week task is:

- MECHANICAL DESIGN (week 1 of 2)
- Make a machine, including the end effector, build the passive parts and operate it manually.

Class material: Mechanical Design

Equipment listed below:

Insper FabLab's operational manual here.

Zmorph 2.0SX - extra information here and also there is this first print tutorial online. The slicer Zmorph recomends is called Voxelizer; for tutorials and download click this link.

Materials:

3D print filament diameter 3.00 mm - that was proper to the toolhead I used. The access the ABS material available at Insper, click here; and for the PLA click here.

Assignment report:

The group work documentation can be found here. Victor was in charge of this task.

My specific task was to develop the mechanical system. I followed these steps:

1) Try to develop the mechanical part from scratch. I had help from Victor and it was fun, but failed. We learn the idea of weight balance and this was crucial to calibrate the final working system.

2) Learn from Lourenço's development (he works within the technical team at Insper and has build a polar drawbot on his own some time ago).

3) Analyse and understand polar drawbot development kit (click here). 3D printing is never that easy and the parts often need adjustment. In this sense, I printed extra units, replacements, in case anything broke during assembling process.

4) I made almost all the 3D prints on the project (some wore made by Alex Garcia).

3D print inicial documentation:

As soon as I finished checking the STL set of files to printi, we chose one subset for the first effort of building our drawbot parts. The gears were chosen. It follows the setup for this print, the same used for exercise 05 and to access the gcode click here.

Alex and Victor also did 3D prints for this assignment. The image with the partes displayed in exercise 11 shows different material colours. They worked on different printers as well. For extra comments on this topic, please address Victor's full group assignment documentation.

3D print parameters

Hair spray was the glue used for this 3d print.
- Temperature - nozzle: 240°C - bed: 100°C.
- layer height: 0,1 mm
- printing speed: 30mm/s
- material: ABS 3.00 mm.

Video presentation - Group Work

The 'face' of the Project.

There is the exploded view - and a closer idea of how many printed parts we had.

This is the task map - My attribution: mechanical system.

There it is, the first attempt from scratch - open system.

There it is, the first attempt from scratch - closed system.

Cardboard prototype - just helping a first simulation before 3D print finishes.

This idea came with Lourenço's kit analysis. There is an image below that shows its componets. The ball chain conects the parts and allows the motor spining to be transmited properly to the penholder.

Group discussion with tutor Kenzo - 1. This is the first moment with talked about the group work. From this moment on I was in charge of mechanical parts.

Lourenço's robot - it was taken as exemple to analyse.

Lourenço's robot - Robot in a box.

Group discussion with tutor Kenzo - 2. At this moment we were planing how to assemble the parts, checking whats was already working and what was still missing. This meeting is a plan for exercise11.

Printing our group robot parts. This is just a first 3D printer image. The detailed information about this task is better understood clicking here.

Inicial 3D print results.

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