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Fused-Deposition-Modeling 3D printer

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by

isra rabbaa

on 19 May 2015

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Transcript of Fused-Deposition-Modeling 3D printer

Fused-Deposition-Modeling 3D printer

Project team
Ziyad S.Natsheh Isra H.Rabbaa


Supervisor
Prof. Dr. Karim Tahboub


Outline

Introduction
What is 3D printing
Technologies
Advantages and disadvantages
Applications
Conceptual design
Design and components
Practical Work and Experiments
Future work

What is 3D printing?
3D printing:
is a process of making three dimensional solid objects from a digital model.

This achieved using additive processes. by laying down successive layers of material until the entire object is created.
Additive and subtractive
manufacturing process
3D Printing Technologies
1. StereoLithography Apparatus (SLA)
2. Selective Laser Sintering (SLS)
3. Fused Deposition Modeling (FDM)
(Fused Filament Fabrication (FFF))
Advantages of 3D printing
Rapid prototyping
Customizations
Close to zero waste
Complexity
Tool-less

Disadvantages of 3D printing
Size limitations
Energy consumption
Air emissions
Some Limitation in shapes
Build time
Materials

Applications
Conceptual Design
The Design and Components
Mechanical design and components
Electrical and control components
Software programs
Raw material

Mechanical design and components

The frame dimension is 49x42x40 cm.
made from wooden parts connected together. The three axes of the 3D printer will be added to this frame.

The Frame
The extruder
Heat the PLA filament to the melting point.
A stepper motor moves the material through the extruder.
Nozzle outlet diameter equal 0.3mm.
Extruder temperature must be in
range (190-205 C).

Horizontal motion along Y-axis
Motion along Z-axis and X-axis
Electrical and control components
Stepper motors ( NEMA17)
Pololu stepper motor driver
Heatbed (mk2)
Megatronics V2.0 controller board
Endstop switches

1.8 degree for 1 step
200 steps per one revolution
Operating voltage 12 V
Operating torque 2.6 N.cm

Stepper motors ( NEMA17)
Stepper motor calculation
(steps per mm)
X and Y steps

steps= motor steps per revolution x driver microstep
÷
belt pitch ÷ number of teeth on pulley

steps = 200 ×16 ÷ 2.5 ÷16 = 80 steps/mm
Z Steps

𝑠𝑡𝑒𝑝𝑠 = 𝑚𝑜𝑡𝑜𝑟 𝑠𝑡𝑒𝑝𝑠 𝑝𝑒𝑟 𝑟𝑒𝑣𝑜𝑙𝑢𝑡𝑖𝑜𝑛 × 𝑑𝑟𝑖𝑣𝑒𝑟 𝑚𝑖𝑐𝑟𝑜𝑠𝑡𝑒𝑝 ÷ 𝑡ℎ𝑟𝑒𝑎𝑑 𝑝𝑖𝑡𝑐ℎ
𝑠𝑡𝑒𝑝𝑠 = 200 ×16 ÷1.25 = 2560 𝑠𝑡𝑒𝑝𝑠/𝑚𝑚

Extruder Steps

𝑠𝑡𝑒𝑝s= motor step per revolution
x
drivermicro step
x (big gear/small gear ) ÷ 𝑑𝑟𝑖𝑣𝑒 𝑔𝑒𝑎𝑟 𝑑𝑖𝑎𝑚𝑒𝑡𝑒𝑟
÷ 𝜋

𝑠𝑡𝑒𝑝𝑠 = 200 ×16 ×(47 ÷9)÷ 𝜋 ÷10 = 1385 𝑠𝑡𝑒𝑝𝑠/𝑚𝑚

Heatbed (Mk2)
Used to improve printing quality by prevent warping.
Allows the printed part to stay warm during
the printing process.
Printbed temperature should be 70 C .

Megatronics V2.0 controller board
Megatronics V2.0 controller board has several functions:

Process the G-code instructions.
Control the four stepper motor drivers.
Monitor the end-stops
(end-stops are used for homing the three axes)
Control and monitor the heatebed temperature.
Control and monitor the temperature of the extruder
hot-end.

Software
Raw material
PLA (polylactide acid)
Filament with diameter 3mm
Melting temperature is between 185–210 °C

Work Done
Stepper motor driving module
1. With Pololu A4988 driver and Arduino mega 2560 microcontroller

2. With Pololu A8825 driver and
Ardunio Uno microcontroller

Stepper motor driving module
Time plan & Future Work
Food
Architecture
Vehicle
Prototyping
Medical
Buildings
Special Thanks
Engineering College

Eng. Mohammed Shanaa
Eng. Jaser AlMuhtasib
Pronterface
software
Practical Work and Experiments
1. Simple cube print
2. Curved objects
3. Extruder small gear
4. Test for support material
5. Mug
Not From the First time !!

Future work
wireless
Monitoring and display
Fault diagnosis and detection
Fail-safe

Full transcript