Week10

Week10. Mechanical Design, Machine Design¶

These days it has been an exceptional experience since a machine was built as a group.

Assignments: Mechanical Design (part 1 of 2)¶

Group assignment:

Design a machine that includes mechanism + actuation + automation + application.
Build the mechanical parts and operate it manually.
Document the group project.

Individual assignment:

Document your individual contribution.

Assignments: Machine Design (part 2 of 2)¶

Group assignment:

Actuate and automate your machine.
Document the group project.

Individual assignment:

Document your individual contribution.

Learning Outcomes¶

Work and communicate effectively as a team.
Design, plan and build a machine.
Analyse and solve technical problems.
Recognise opportunities for improvements in the design.

Results: Mechanical Design + Machine Design¶

For two weeks, the group mission was to organize, through planning, to answer questions such as WHAT, WHERE, HOW, etc., for the construction of a machine that meets the following conditions that includes mechanism + performance + automation + application. Building mechanical and manually operated parts. For this purpose, the group had meetings first to determine which machine to manufacture and thus begin to shape the final product PachamamaPrint, a machine that produces by printing the maca material native to the central part of our country.

video¶

Through collaborative work in the city of Huánuco, we learned about the diverse skills of each of the group members, which led to the completion of PachamamaPrint as a collective achievement. More than contributing each day of meeting with my colleagues, I learned to build from each physical piece and add to it through the software and thus give movement to orderly actions that solved a problem for society.

Group Assignment: PachamamaPrint¶

In the following link we can observe all the activities carried out by the group for the development of the machine as part of the task. Link

Individual Assignment: Preparation of biomaterial¶

Maca is one of the Andean tubers that has multiple health benefits due to its high nutritional and medicinal value. And at more than 4,000 meters above sea level. Maca is harvested in the province of Junín, and there are even around 28 varieties of maca, among the best known are black and red maca. The councilor for Junín, Abimael Rojas, stated that maca has originated in the districts that are on the shores of Lake Chinchaycocha. “The provinces of Carhuamayo and Ondores are the largest producers of maca, who continue to maintain the custom since Inca times,” he highlighted.

Maca¶

Banana¶

Tocosh¶

Coca¶

Procedure for preparing the final biomaterial¶

After several attempts with different biomaterials, we saw that the material with the greatest consistency was maca flour, which was chosen to carry out the tenth week of operation of the machine.

Manufacturing, recycling and assembly¶

Manufacturing¶¶

With the designs finalized, the next step was to bring them into the physical realm through 3D printing. Utilizing Ultimaker Cura slicer software, I prepared the digital models, generating the necessary G-codes to instruct the printer.

Prototype Construction¶

Teacher Wilber and I traveled to Lima to meet Maria and Silvana to carry out assignment 10 of machines for which we decided to build a 3D printer that can print images or letters with maca filament and the materials we need are:

MATERIAL:

2 M8 Z axis threaded rods
3 Nut T8
V-SLOT PROFILE 20X20x300
2 GT2 timing belt half meter 6mmx1M X and Y axis
2 GT2 toothed pulley 22 teeth M5 motor for the X and Y axis
2 GT2 22 smooth toothed pulley M5 X and Y axis
6 smooth M8 rods of 30 cm Y, Z and X axis
Working temperature: -30ºC ~ 70ºC
10 M8 linear bearings
1 M8 threaded rod for the extruder
8 90 degree angles per 20 mm
3 Flexible couplings M5xM8
1 Flexible coupling M8xM8 4 dolar
Nuts and bolts
100 SLIDING HAMMER HEAD NUT M5 (order more, they will be lost)
40 M3 engine bolts
100 M5 screws Electronic
Arduino Mega
3D Printer Controller Board RAMPS 1.4
Arduino Mega Shield
5 Stepper motor NEMA 17 42x39mm 4.2Kg
2 100k thermistors (to see the temperature at which material is worked in the environment)
1 Lcd Graphic 128x64 Shield Ramps 1.4 3d Printer
5 Cable for stepper motor, 1 meter long
4 wires, with HX254 Female
Inputs for motor (Nema 17)
12V and 20A power supply with power cable
3 Limit Switch Module for 3D Printer
A4988 Stepper Motor Driver Module for Pololu

FABRICATION AND ASSEMBLY

To make the 3D printer we had to buy recycled printers and electronic components

Conclusions¶

Our commitment to sustainability and environmental responsibility was the central axis that guided every stage of the project, from design conception to manufacturing. By opting to reuse existing materials and minimize waste, we not only responded to current needs to preserve the environment, but also demonstrated how sustainable practices can be effectively integrated into engineering projects. This approach not only sought to mitigate our environmental impact, but also inspire others to adopt responsible measures, setting a precedent for future developments in the field of sustainable engineering.

The success of PachamamaPrint stands as a clear testament to the achievements that can be reached through collaboration and teamwork. It was the diversity of perspectives, the collective experience and passion of each member that made it possible to overcome challenges, generate innovative solutions and achieve common goals. This collaborative process fostered a rich and dynamic environment where ideas could evolve and obstacles were addressed with creativity and determination.

Finally, I would like to express my deep gratitude to those who made this achievement possible. To my colleagues and tutors, whose guidance and support were fundamental: especially Vaneza Caycho and Roberto Delgado, who with their experience and guidance illuminated each step of the process. I also thank Ronal Vilca, Silvana Espinoza, Maria Angela y Renson Samaniego whose input and dedication significantly contributed to the success of the project.