Design and Fabrication of LASER galvo scanner

Project Title

Design and Fabrication of LASER galvo scanner

Project Area of Specialization 3D/4D PrintingProject Summary

The project consist of two tasks. First  XY galvanometer scanner will be used to project laser graphics using low power laser.In  second task XY galvanometer will be used for SLS 3D printing.

Project Objectives

Objectives consist of two parts

1) First task was to implement XY galvanometer scanner for laser projection.

2)The second task is to implement XY galvanometer scanner for selective laser sintering (SLS) printing (another group is working on bed for printing).

Project Implementation Method

Methodology for laser graphics is :

1)Component selection and hardware implementation.

2) 2D model.

3)G-code generation / custom code.

3)Conversion of G-code to electrical signal.

4)Deflection of laser beam for laser graphics.

Methodology for SLS printing is :

1)Component selection and hardware implementation.

2)3D CAD model to be manufactured.

3)Slicing of 3D model.

4)Conversion of G-code to electrical signals.

5)Deflection of laser beam for each slice.

Benefits of the Project

1)Galvos are used for rapid printing of 3D objects.

2)Using SLS printing very complex objects can be printed in one go.

3)Using CO2 laser final printed product will have 92% of its density.

Technical Details of Final Deliverable

For laser graphics

1)galvo scanner (sc-17 15k). 15k is the speed of galvo which is 15000 points per second

2)Laser diode 3.3V

3)Arduino nano

4)MCP4822 DAC 16 bit

For SLS printing

1)Galvoscan head + f-theta lens (15*15 output area and 192mm focal length.

2)CO2 laser 40watt

3)Mirrors (gold plated for high power CO2  laser)

4)Power supply for CO2 laser.

5)Teensy 3.2 (for XY2-100 communication with digital galvo scan head)

Final Deliverable of the Project Hardware SystemType of Industry Manufacturing Technologies 3D/4D PrintingSustainable Development Goals Industry, Innovation and InfrastructureRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	80000
Galvo scan head	Equipment	1	45000	45000
CO2 LASER	Equipment	1	15000	15000
F-theta lens	Equipment	1	10000	10000
Custom charges	Miscellaneous	1	8000	8000
transection fee + traveling cost	Miscellaneous	1	2000	2000