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3D Printing

3D Printing. Printing process. Printing is a process for reproducing text and images, typically with ink on paper using a print press. GUTTENBERG’S PRINTING PRESS. INVENTED IN 15 TH CENTURY USED MOULDS MADE OF BRASS. Invention of first printing machine.

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3D Printing

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  1. 3D Printing .

  2. Printing process • Printing is a process for reproducing text and images, typically with ink on paper using a print press.

  3. GUTTENBERG’S PRINTING PRESS. • INVENTED IN 15TH CENTURY • USED MOULDS MADE OF BRASS

  4. Invention of first printing machine • First printing machine was invented by JOHANNES GENSFLEISH in 1803. • This superseded the cost and slow production.

  5. Subtractive Manufacturing • Creates a product by removing sections from a block of material. • Generates waste through the excess material that is removed. • Limited design capabilities.

  6. Computerized Numerical Control (CNC) Machining • A method of Subtractive Manufacturing that removes sections from a block of material by cutting or drilling the excess material away.

  7. Additive Manufacturing • Creates a product through adding materials to the object. • Adds material layer by layer until printing is finished. • Allows for complex and intricate designs.

  8. 3D Printing • A method of Additive Manufacturing that adds material to an object layer by layer to create the final product.

  9. 3D printing • Imagine a near future in which a device connected to your desktop prints a SOLID OBJECT!!!!!! • We can have tangible goods and intangible services delivered over the INTERNET.

  10. Different methods • Selective laser sintering (SLS) • Stereolithography • Fused deposition modeling (FDM) • Laminated object manufacturing

  11. SLS method • Selective laser sintering (SLS) is an additive manufacturing technique that uses a high power laser (for example, a carbon dioxide laser) to fuse small particles of plastic, metal (direct metal laser sintering),ceramic or glass powders into a mass that has a desired 3-dimensional shape

  12. STEREOLITHOGRAPHY • Stereolithography is an additive manufacturing process using a vat of liquid UV-curable photopolymer ”resin” and a UV laser to build parts a layer at a time.

  13. STEREOLITHOGRAPHY(contd). • CAD (Computer Assisted Design) Programs help users create STL Files for the 3D Printers to read. • STL (STereoLithography) file format – a file format which uses many little triangles to make a 3 dimensional plot of the objects intended surface.

  14. FDM • Fused deposition modeling (FDM) is an additive manufacturing technology commonly used for modeling, prototyping, and production applications

  15. Laminated object manufacturing • Laminated object manufacturing (LOM) is a rapid prototyping system developed by Helisys Inc. In it, layers of adhesive-coated paper, plastic or metal laminates are successively glued together and cut to shape with a knife or laser cutter.

  16. Equipment types • Dimension 3D printer

  17. Specification of uPrint

  18. What is ABSplus? • ABSplus is a production-grade thermoplastic that gives models the ability to perform just like production parts in real-world functional testing.

  19. Technique

  20. The PRINTING CYCLE • Preparation : • Once you click “3D print “ from Z-print , the printer initiates the pre build routine. • First it warms the air inside the printer and creates optimum operating environment. • At the same time , it fills the ‘Build Chamber’ with 1/8th inch layer powder ( so that finished parts rest on it).

  21. The PRINTING CYCLE b) Printing : • Once the pre-build is complete , the printer begins printing the layers created in the Z-print software. • The machine deposits 0.1mm thick layer of powder from the ‘Hopper”. • The ‘Print Carriage’ then moves across this layer depositing the binder.

  22. The PRINTING CYCLE • The binder solidifies the powder in that cross section of the model. • The piston below the ’Build Carriage ’ lowers the powdered bed by 0.1mm , preparing the next layer. • The process repeats until the model is complete

  23. The PRINTING CYCLE c) Depowdering/Recycling : • When finished the model, it is suspended in the powder to cure. • At the end of curing time , the machine then automatically removes most of the powder around the model by vaccum pressure. • The loose powder is pneumatically conveyed through the system for reuse.

  24. 3D Printing : The Chemical Process • A platform which serves as the base of the object is submerged into a vat of polymers. • UV light cures and hardens these polymers with each pass over the object. • Once a pass is finished, the platform lowers slightly into the vat, allowing more uncured polymers to cover the object.

  25. Applications of 3D Printing • Prototyping • Modeling • Custom parts • Design • Research

  26. 3D Printing and Sustainability • 3D printing with non harmful chemicals. • 3D printing generates almost no waste during manufacturing, and does not require lubricants. • 3D Printing can be used to create replacement parts.

  27. SUCCESS stories • 3D printed Jaw

  28. Challenges Facing 3D Printing • Intellectual property rights of the 3D Printer users. • Nearly anything can be printed by 3D Printers and this is a troubling prospect if criminals use 3D Printers to create illegal products.

  29. In Conclusion • 3D printing is an expanding technology which may soon start an industry in which everyone has the possibility of being a manufacturer. • 3D printing has a lot of possible benefits to society, although the products created must be regulated.

  30. References • http://en.wikipedia.org/wiki/3D_computer_graphics • .com • .com

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