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Automated Construction by Contour Crafting Behrokh Khoshnevis University of Southern California

Automated Construction by Contour Crafting Behrokh Khoshnevis University of Southern California. Fabrication Processes. Formative (pressing, forging, bending,..) Subtractive (milling, turning, chiseling, sawing, stamping..) Additive Casting (requiring mold)

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Automated Construction by Contour Crafting Behrokh Khoshnevis University of Southern California

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  1. Automated ConstructionbyContour CraftingBehrokh KhoshnevisUniversity of Southern California Viterbi School of Engineering .

  2. Fabrication Processes • Formative(pressing, forging, bending,..) • Subtractive(milling, turning, chiseling, sawing, stamping..) • Additive • Casting (requiring mold) • Traditional Layered Fabrication (only in manual construction) • Modern Layered Fabrication (SFF or RP) Technologies Viterbi School of Engineering .

  3. Commercialized RP Technologies Viterbi School of Engineering .

  4. SIS – Selective Inhibition Sintering Viterbi School of Engineering .

  5. Viterbi School of Engineering .

  6. MPM – Moldless Powder Metallurgy Viterbi School of Engineering .

  7. Viterbi School of Engineering .

  8. Limitations of current SFF methods • Slow speed • Not scalable • Limited choice of materials • Impossible to embed other objects Viterbi School of Engineering .

  9. Material feed barrel Side trowel control mechanism Nozzle Top trowel Side trowel What is Contour Crafting? CCis a layered fabrication method which combines ancient surface forming concepts with modern robotics technology Viterbi School of Engineering .

  10. A CC machine for thermoplastics Viterbi School of Engineering .

  11. Nozzle Assemblies Viterbi School of Engineering .

  12. Plastic Parts Viterbi School of Engineering .

  13. CC Machine for Ceramics Viterbi School of Engineering .

  14. Viterbi School of Engineering .

  15. Comparison of the flow pattern with the simulation result and the actual process on the near optimal conditions: side views with a square orifice (top pictures), and side views with an elliptical orifice (bottom pictures) Process & Machine Design Research Viterbi School of Engineering .

  16. Cylinder Connector Bevel gear Nozzle Side trowel mechanism of movable side trowel Movable Side Trowel Viterbi School of Engineering .

  17. Building Various Surface Slopes Viterbi School of Engineering .

  18. 2.5D and 3D Objects Viterbi School of Engineering .

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