© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid prototyping 3d CAD Real part.
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Transcript of © Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid prototyping 3d CAD Real part.
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
Rapid prototyping
• 3d CAD Real part
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
Rapid prototyping
• Making a physical prototype directly from 3D CAD drawing.
1. CAD solid model2. Translation to STL format3. Slice the model into layers4. Send data to RP machine5. Curing each layer by laser
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
Rapid Prototyping Usage
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
Rapid Prototyping Usage
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
3D Printing
• Roller spreads powder• Inkjet traces the shape of each section
http://ma.gnu.ac.kr/vod/Plastic/3d_printer.MP4
http://ma.gnu.ac.kr/vod/Plastic/3d_pirinter_objet.mpeg
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
SLA (Stereo Lithography Apparatus)
• Vat filled with photo-curable liquid resin• Laser beam solidifies liquid resin of 2d cross-section• Elevator drops enough to cover the solid polymer with
another layer of liquid
Cured Resin
XY Scanning UV Laser Beam
Photo-curableResin (Liquid)
Top of the Liquid Elevator
Vat
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
SLS (Selective Laser Sintering)
• Roller spreads powder across the top of the elevator
• Laser traces the shape of each cross-section, fusing powder in the thin layer
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
FDM (Fused Deposition Manufacturing)
• Dispenser heats the plastic and extrudes it at the desired position. Deposited plastic solidifies to form a hardened layer.
© Pearson & GNU Su-Jin Kim© Pearson & GNU Su-Jin Kim
PlasticsPlasticsManufacturing ProcessesManufacturing Processes
Reference
• Polymer Mixing (W. R. Whang) : http://rmp.gnu.ac.kr/• Mechanical Properties of Composite (J. H. Choei):
http://gsnu.ac.kr/hb/11176/