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RPI Pencil Sharpener

RPI Pencil Sharpener. Sophie Connor and Katy Mix Schoharie Central School SME Contest Presentation. Pencil Sharpener. Why Make This Product?. Practical and widely used Variety of processes Says “RPI” Elegant and efficient design. Overview of Processes. Injection Molding

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RPI Pencil Sharpener

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  1. RPI Pencil Sharpener Sophie Connor and Katy Mix Schoharie Central School SME Contest Presentation

  2. Pencil Sharpener

  3. Why Make This Product? • Practical and widely used • Variety of processes • Says “RPI” • Elegant and efficient design

  4. Overview of Processes • Injection Molding • Abrasive Waterjet Cutting • CNC Machining • Laser Cutting and Engraving • Ultrasonic Welding • Heat Treating

  5. Measurements (Basic) 5 ½” 1 ¼” 2 ¾” 3” 3”

  6. Gear Bank Handle Handle: Injection Molding

  7. Gear Bank Handle Handle Pin Handle Pin: CNC Machining

  8. Gear Bank Handle Handle Pin Handle Lever Handle Lever: Abrasive Waterjet

  9. Gear Bank Handle Handle Pin Handle Lever Shaft Shaft: CNC Machining

  10. Gear Bank Handle Handle Pin • Blades and Attached Planetary Gear: • CNC Machining • Possible Heat Treating Handle Lever Shaft Planetary Gear (attached to blade) Blades

  11. Gear Bank Handle HandlePin Large Gear Handle Lever Shaft Large Gear: Abrasive Waterjet Planetary Gear (attached to blade) Blades

  12. Gear Bank Handle Handle Pin ¾” • CNC Machining • shaft • blades w/ planetary gear • handle pin • Abrasive Waterjet Cutting • large gear • handle lever • Injection Molding • handle ½” 1 ½” Diameter Large Gear 3 ¾” Handle Lever Shaft 2” ¾” Diameter 2” Length Planetary Gear (attached to blade) ½” Diameter Blades

  13. Sand/Garnet Base Cover • Injection Molding • base • Laser Cutting • cover • Ultrasonic Welding • connect cover and base • Filled with sand or recycled garnet from waterjet machine. ” Sand Base 1” 3” 3”

  14. Drawer ” Injection Molded 1 ¼” 2 ¾” 2 ¾”

  15. Case • Injection Molding • two cover pieces • Ultrasonic welding • to connect the two and base cover • Laser Engraving • RPI Lettering • Shaft Hole Diameter: • Front – ” • Back – ” • Large Gear Diameter – 1½” 1 ½” 3” 3”

  16. Cost

  17. Thank you! Any questions?

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