Final Project¶
This week I worked on defining my final project idea and started to getting used to the documentation process.
Mini Continattor¶
Mini Continattor
It is an educational robot in which the students of the Introduction to Digital Fabrication workshop can learn to use the machines of the laboratory following a fab academy approach, but because this course is aimed at all students of the continental university is that a pre-designed project must be used. These workshops are offered even to non-engineering careers because they are extracurricular activities such as soccer, basketball, etc. Our robotics courses, 3d printing, 3d scanning are courses that start from the basics to the complex, for that reason and for the development time is that it works with a pre-designed project.
Design¶
- First we made the most important sketch that integrates most of the parts of minicontinattor, with this sketch we will make the extrusions to obtain most of the parts.
9mm MDF structure
- 3D printing rounded edges of the lateal silhouette is obtained the desired dimensions, then it is extruded.
- Extrude to the distance of the lateral structure plus the thickness of the acrylic to be veneered.
- Add the rounded edges
- A sketch is made projecting some geometries.
- To make the corresponding extrusions
7. This design flow is repeated in two more pieces
Acrylic veneer
8. For the acrylics based on the measurements of the frames, the sketches are designed and extruded.
9. This operation is repeated for the other veneers of the frames with rounded edges, which are 3 more pieces.
10. Then for the lateral veneers with the silhouette of the side, a sketch is made to generate the mesh.
11. And it is constructed at the distance of the chosen thickness.
12. The same for the transparent acrylic without the mesh.
13. This procedure of geometry projection and use of the sketch with the main silhouette to perform extrusion operations is repeated for the other ‘pieces of the veneer.
14. Finally we generate some files to organize the 2D lines that will be used in the laser cutting and CNC machining.
15. And we export it in DXF
16. The same way for cnc machining
For the fabrication of the ‘3d printed parts, it must be exported in a stl format as seen in the example.
17. In the parts list we have the following parts
18. Then we import these files in the ultimaker cura slicer and we classify them according to the material which they will be manufactured in PLA we have the following parts
19. And in TPU 95A we have the flexible parts which are the rollers of the wheels.
20. To manufacture the laser cut parts, first we must import the dxf to the rd works software.
21. And generate 3 files for 3 different colors and thicknesses of acrylics to use indicating the speed and corresponding powers.
22.
23. To save the file and transfer it to the machine we must click on “Save to U File” assign a name and save it in a USB removable drive.
- At this moment MiniContinattor is working with a board designed with an ATMEGA and a remote control, but the board with a SEEED XIAO and and SMD components is under development.
- The structure is complete as seen in the pictures.
