Rapid-Prototyping Operations

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Presentation transcript:

Rapid-Prototyping Operations Chapter 20 Rapid-Prototyping Operations Copyright Prentice-Hall

Parts Made by Rapid-Prototyping (c) (a) (b) Examples of parts made by rapid-prototyping processes: (a) selection of parts from fused-deposition modeling; (b) stereolithography model of cellular phone; and (c) selection of parts form three-dimensional printing. Source: Courtesy of Stratasys, Inc., (b) and (c) Courtesy of 3D Systems, Inc.

Characteristics of Additive Rapid-Prototyping Technologies

Mechanical Properties of Selected Materials for Rapid Prototyping

Computational Steps in Rapid Prototyping The computational steps in producing a stereolithography file. (a) Three-dimensional description of each part. (b) The part is divided into slices (only one in 10 is shown). (c) Support material is planned. (d) A set of tool directions is determined to manufacture each slice. Also shown is the extruder path at section A-A from (c) for a fused-deposition-modeling operation.

Fused-Deposition-Modeling (a) Schematic illustration of the fused-deposition-modeling process. (b) The FDM 5000, a fused-deposition-modeling machine. Source: Courtesy of Stratysis, Inc.

Support Materials and Structures in Parts (a) A part with a protruding section which requires support material. (b) Common support structures used in rapid-prototyping machines. Source: P. F. Jacobs, Rapid Prototyping & Manufacturing: Fundamentals of Stereolithography. Society of Manufacturing Engineers, 1992.

Stereolithography Schematic illustration of the stereolithography process.

Selective-Laser-Sintering Schematic illustration of the selective-laser-sintering process. Source: After C. Deckard and P. F. McClure.

Three-Dimensional-Printing Schematic illustration of the three-dimensional-printing process. Source: After E. Sachs and M. Cima.

Three-Dimensional-Printing to Produce Metal Parts Three-dimensional-printing using (a) part-build, (b) sinter, and (c) infiltration steps to produce metal parts. (d) An example of a bronze-infiltrated stainless-steel part produced through three-dimensional printing. Source: Courtesy of ProMetal.

Fuselage Fitting Made by Three-Dimensional-Printing A fitting required for a helicopter fuselage. (a) CAD representation with added dimensions. (b) Dies produced by three-dimensional printing. (c) Final forged workpiece. Source: Courtesy of ProMetal.

Investment Casting Using Rapid-Prototyped Wax Parts Manufacturing steps for investment casting that uses rapid-prototyped wax parts as blanks. This method uses a flask for the investment, but a shell method also can be used. Source: Courtesy of 3D Systems, Inc.

Rapid Tooling for a Rear-Wiper Motor Cover Rapid tooling for a rear-wiper motor cover. Source: Courtesy of 3D Systems, Inc.