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Rapid Manufacturing Processes: Technology and Comparison

Explore various rapid manufacturing processes like Stereolithography, JP Systems, FDM, SDM, LaserCamm, CyberCut, CNC Machining, and Molding. Understand their characteristics, benefits, and how they can speed up prototype production.

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Rapid Manufacturing Processes: Technology and Comparison

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  1. 39-245 Spring 2000 Carnegie Mellon University Brian Oosterman Eric Egenolf Niti Yongvanich Rapid Manufacturing Processes: Gear

  2. Characteristics of Gears: • 2.5D: a geometry that can be described without any overhangs. • High yield strength and hardness • Simple, uniform section • Smoothness • Ductility • Fatigue

  3. Impossible Process:Stereolithography(SLA) • Brittle (photosensitive polymer) Cool, Unnecessary Features • Enhance the geometric visualization of a product • Easily modified (any last minute changes) • Fast, a prototype can be made in a matter of days http://www.stereolithography.com/slainfo.htm

  4. Preferable Process: JP Systems • Low material cost (using paper) • Suited for education • Not likely to get a perfect prototype the first time • No particular level of accuracy is guaranteed. http://www.schroff.com/jpsystem5/index.htm

  5. Other Possible Processes: • Fused Deposition Manufacturing (FDM) • Accurate to the size of the thread (0.07 inches) • Shape Deposition Manufacturing (SDM) • Retains a 3-D representation • LaserCamm • 2-dimensional cutter http://www.cs.cmu.edu/~rapidproto/students.99/jburnett/project2

  6. Other Possible Processes: • CyberCut • Dimensional Tolerance ~ 0.001” to 0.01” • CNC Machining • Mills both 2 and 3 dimensional parts for models • Create different degrees of rotation, allowing for more flexible designs • Molding • Quick and inexpensive

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