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3D PRINTER

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jennifer medina guerrero

on 12 December 2014

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Transcript of 3D PRINTER

3D PRINTER
Introduction
STEM
Engineering Design Process
Desktop 3D Printers
K-12 The Engineering Process
IAM
College STEM 3D Printing
Conclusion
Recommendations

Content

What is STEM?


STEM education grows out of the idea that the boundaries between science, technology, engineering, and math are permeable.

Moreover, it asserts that its four disciplines are interdependent.

By endeavoring to blend science, technology, engineering, and math in its approach, STEM education seeks to create 21st century learning opportunities and skill development for all students.

Selective Laser Sintering
Stereolithography
Fused Deposition Modeling (FDM)
Laminated Object Manufacturing

Different Methods

3D printable models maybe created with a computer aided design package or via 3D scanner
The manual Process of preparing geometric data for 3D computer graphics is similar to plastic arts such as sculpting.
3D scanning is a process of analyzing and collecting data of real objects; its shape and appearance and buildsds digital, three dimensional models.


3D Printable Models



3D printing is a process of making three dimensional solid objects from a digital file.



The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created.




Each of these layers can be seen as a thinly sliced horizontal cross-section of the eventual object.

How 3D Printing Works

What is RepRap or 3D Printing?

RepRap is short for Replicating Rapid-prototyper. It is the practical self-copying 3D printer - a self-replicating machine.

A method of additive manufacturing that adds material to an object layer by layer to create the final product.

Introduction

Why We are using replicating 3D Printing?

Low cost
Scalability
Opportunities for experimentation/mutation
Infinite spare parts
Exponential dissemination.
It doesn't really matter how long it takes to build one
To get one to everyone on the planet you only need 33 doubling periods (generations).
If everyone gives one to 6 friends it will only take 13 generations.

Printer?

What is RepRap or 3D Printing?

RepRap is short for Replicating Rapid-prototyper. It is the practical self-copying 3D printer - a self-replicating machine.

A method of additive manufacturing that adds material to an object layer by layer to create the final product.

Introduction

Introduction
STEM
Engineering Design Process
Desktop 3D Printers
K-12 The Engineering Process
IAM
College STEM 3D Printing
Conclusion
Recommendations

Content

Dr. John L. Irwin, Michigan Technological University


The RepRap 3-D Printer Revolution in STEM Education

What is STEM?


STEM education grows out of the idea that the boundaries between science, technology, engineering, and math are permeable.

Moreover, it asserts that its four disciplines are interdependent.

By endeavoring to blend science, technology, engineering, and math in its approach, STEM education seeks to create 21st century learning opportunities and skill development for all students.

Selective Laser Sintering
Stereolithography
Fused Deposition Modeling (FDM)
Laminated Object Manufacturing

Different Methods

3D printable models maybe created with a computer aided design package or via 3D scanner
The manual Process of preparing geometric data for 3D computer graphics is similar to plastic arts such as sculpting.

3D scanning is a process of analyzing and collecting data of real objects; its shape and appearance and buildsds digital, three dimensional models.


3D Printable Models



3D printing is a process of making three dimensional solid objects from a digital file.


The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive layers of material until the entire object is created.


Each of these layers can be seen as a thinly sliced horizontal cross-section of the eventual object.

How 3D Printing Works

What is RepRap or 3D Printing?


RepRap is short for Replicating Rapid-prototyper. It is the practical self-copying 3D printer - a self-replicating machine.


A method of additive manufacturing that adds material to an object layer by layer to create the final product.

Introduction

STEM is an acronym for science, technology, engineering and mathematics fields of study


STEM

Why We are using replicating 3D Printing?

Low cost
Scalability
Opportunities for experimentation/mutation
Infinite spare parts
Exponential dissemination.


The Engineering Process

3D printers involve type of knowledge.Dealing with 3d printers bring in to people this things:

How to use Electronic Parts
How to Proggramme Electronic devices.
How to desing electro-mechanix parts.
İncrease human creativity.
Every people can be small fabrica.


Well as you all know the world needs more 3D printers, more platforms for creation, more freedom. More possible ways to show your epic awesomeness in creation. And most of all the freedom to design and fabricate exactly what you need, when you need it without any barriers.
Building a 3D printer is very hands-on and will require all your technical skills.


BUILD 3D PRINTER

During the two week course two students who are practicing high school biology teachers attended a two day workshop to build a MOST Prusa Mendel 3D Printer. They were particularly interested in applying the 3D printer to fabricate high-quality scientific equipment for their own classrooms, a method which has proven successful at the university level to radically reduce lab hardware costs for research.17, 18 The participants accomplished the building and commissioning of the 3D printer to bring back to their high school biology class. They printed a mini centrifuge and other apparatus for use in their classes

In July of 2013 “The Engineering Process” course was delivered wherein students had an activity requiring the solution to a design problem for a customized flashlight bracket permitting attachment to various objects like a RepRap 3D Printer or bicycle handlebars. The project again allowed student groups to utilize the design, build, and test iterative process.

RepRap 3D Printers were used in the class to produce several iterations for testing and improving their designs.


1.The Engineering Process:The first course is intended to introduce engineering to pre-college teachers by providing them with a meaningful experience about the process and methods that engineers use to solve problems


2.Engineering Application:. In this course, students design a system or process involving computer programming and physical assembly of components.design process, learned the basics of 3D modeling using CAD software.



Figure 1

The 3D model of the K’Nex separator, and the Lego Block Separator , were modeled by students in the course and analyzed for functionality by performing motion simulation and Finite Element Analysis (FEA) to illustrate the iterative design process.(Figure 1)

Comments provided on a formative feedback survey after the course indicated that developing spatial visualization skills and utilizing 3D CAD software provided the participants a better understanding of the engineering process.

This design project, and similar projects by other teachers, are excellent examples of how this affordable technology can integrate the full spirit of the NGSS to ALL K-12 students, not just those who are in industrial technology type classes.

Several teachers have shared their student’s
work in solving engineering design problems using 3D CAD and 3D printing. For example, below shows a student-developed design for a bilge pump motor mount and propeller guard for use as a thruster on an underwater remote operated vehicle.

In June of 2013 the “Engineering Applications in the Physical Sciences” course was offered.During the first half of the course, students built and tested wind turbine blade designs using a kit that required them to solder a circuit board to convert AC to DC and double the voltage
A box was required to protect the electronics from the environment and instead of
purchasing commercial version at a cost of $5-$10 USD, a customized potting box model was developed using CAD software and printed on the MOST Prusa Mendel RepRap to illustrate the versatility of 3D printers

“This was my favorite project, (and) creating a prototype was inspiring.”, “Loved that we were able to actually print out our product.”, and “It took us extensively through the design process and let us create a final product.

SOFTWARE

Cad Tools
Cam Tools
Firmware




EXTRUDER

Hot End
Cold End
Filament




MECHANİCS

Axis Motion
Belts and Pulleys
Threaded Rod



ELECTRONİCS

Controller
Stepper Motor
Ends Stops
Heated Bed
Stepper Drives

GENERAL 3D PRİNTER STRUCTURE

Karabuk

The NGSS core ideas of “Engineering, Technology, and Applications of Science” are infused in college level Engineering Technology (ET) curricula as the “Engineering Process” or “Design Process” and are typically introduced early on, and then generally put into practice during capstone project courses


Engineering Design Process

3D printing or additive manufacturing (AM) is the use of one of various processes to make a three-dimensional object.[1] In 3D printing, primarily additive processes are used, in which successive layers of material are laid down under computer control.[2] These objects can be of almost any shape or geometry, and are produced from a 3D model or other electronic data source. A 3D printer is a type of industrial robot

University

Karabuk

.

Print parts for upgrades and contribute to the evolution of design

Delta RepRap 3D printers have a stationary printing bed.

Delta style 3d printers
It also has an extruder that moves in all 3 axes.

It is less intuitive.
It is a good alternative because it is simpler to assemble.

Requires fewer parts and less time to construct.
Prusa model design
Uses a Cartesian motion system with the extruder moving in the X and Z directions.

Print bed translating in the Y direction.
Advantages
It uses more intuitive kinematics resembling how most machining centers operate.

It is a good introduction to CNC machining.
College STEM course 3Dprinting
What are STEM courses?
Academic disciplines of science, technology, engineering and mathematics
.
3d printing in high school
High school science courses are utilizing 3D Printers to introduce students to STEM fields
E.g. design for manufacturing, prototyping, industrial design, and customer needs.
3d printing in colleges
University courses are intended to prepare students for successful STEM related careers.
Lecture on 3D Printers includes a live demonstration.

The instructor needs a cart with the 3D Printer and laptop in the classroom
Creates a plastic part from a CAD model that integrates with an electronic communication device.

Students follow-up the lecture with a lab activity.

3D printers checks for fits and tolerances as well as function.

Thank you!!!!
Conclusion
Several desktop 3D printers available on the market.

Students can experience real-world application of the

Iterative engineering problem solving process.
Open source RepRap do-it-yourself design lends itself to direct manipulation of the 3D Printers.

No warranties are being voided as students “tinker” with the mechanics of the 3-D printer.

Students who engage in hands-on design-build-test scenarios will attain a valuable skill set.

And be more likely to pursue STEM careers.
Recommendations
Integrating RepRap 3D printers into curricula

Factors that play a role in the 3D printer decision includes:

-overall cost
-the printed part quality/accuracy,
- types of material options,
- plastic material cost,
- printing time,
- support material capabilities,
-and level of 3D printer adjustments and
-general maintenance required.

Desktop 3D
There are many desktop 3D printers available on the market today. Desktop 3D printers can be categorized as; not assembled “DIY” open source, fully assembled open source, and commercial

There are 2 Type:
Prusa Mendel RepRap
This 3D printer can be assembled > 2 days
The RepRap >educational environments.
The RepRap Project > source hardware
Delta RepRap
The Clavel- or Delta-robot is mostly known for its use in pick-and-place work in PCB fabrication and generic packaging applications. It features fast and accurate positioning and is relatively easy to build. Energetic and Reinoud teamed up to create a both easy to fabricate and light on the budget RepPrep/RepRap.

Innovate Additive Manufacturing (IAM) workshop
In order to prove the viability of having high school teachers build and use 3D printers,
Teachers applied to attend the workshop
The workshop used a self-paced program
to building the printers, teachers2 introduced to a software tool chain used to design and print models.

Online post-workshop survey was resoundingly positive



This conference was an amazing revitalization on my own excitement for teaching and working with kids. I couldn't have taken more away in 4 days than I did and I haven't been this excited about getting back to school in decades!!!”
Delta Style 3D PRINTER
--Delta RepRap 3D printers have a stationary print bed and an extruder that moves in all 3 axes . The advantage of the Mendel design is that it uses more intuitive kinematics resembling.

--The Mendel design is also easier for K-12 students (and teachers) to conceptualize
The Delta 3D Printer, although operationally less intuitive, is a very attractive alternative because it is simpler to assemble, requires fewer parts and requires less time to construct.
Most Prusa
MOST Prusa Mendel RepRap costs about $550 and takes approximately 24 hours to build, the MOST Delta RepRapcosts about $400 and can be built in eight hours.
The value of high school students becoming active participants than simply incorporating 3D printing into the classroom alone.

THE FRAME STRUCTURE OF Delta design is made with fairly simple parts of metal or wood, these parts can actually be made by students.
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