© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid prototyping 3d CAD  Real part.

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Presentation transcript:

© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid prototyping 3d CAD  Real part

© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid prototyping Making a physical prototype directly from 3D CAD drawing. 1.CAD solid model 2.Translation to STL format 3.Slice the model into layers 4.Send data to RP machine 5.Curing each layer by laser

© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid Prototyping Usage

© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes Rapid Prototyping Usage

© Pearson & GNU Su-Jin Kim Plastics Manufacturing Processes 3D Printing Roller spreads powder Inkjet traces the shape of each section

© Pearson & GNU Su-Jin Kim Plastics Manufacturing 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-curable Resin (Liquid) Top of the Liquid Elevator Vat

© Pearson & GNU Su-Jin Kim Plastics Manufacturing 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 Plastics Manufacturing 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 Plastics Manufacturing Processes Reference Polymer Mixing (W. R. Whang) : Mechanical Properties of Composite (J. H. Choei):