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Rapid Manufacturing Processes: Gear

39-245 Spring 2000 Carnegie Mellon University Brian Oosterman Eric Egenolf Niti Yongvanich. Rapid Manufacturing Processes: Gear. Characteristics of Gears:. 2.5D: a geometry that can be described without any overhangs. High yield strength and hardness Simple, uniform section Smoothness

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Rapid Manufacturing Processes: Gear

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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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