RPI Sunglasses

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RPI Sunglasses
Albert Lo -Troy High School
Christopher Quinones -Troy High School
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Our Design
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A Bright Idea

• Supports RPI
• Tasteful fashion accessory
• Helps shield eyes while still a fun item
• Involves a variety of processes

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Parts

• Frames (front and back)
• Sides (x2)
• Lenses (x2)
• Screws, nuts, and washers (x2)

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Frames

• Polycarbonate injection molding

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The two halves are ultra-sonic welded together to
enclose and secure the lens.
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Sides

• ABS injection molding
• CNC machining
• Laser etching

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Lenses

• Purchased
• Solar gray color sheet
• Laser cut
• Acrylic

Lenses
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Screws, Nuts, and Washers

• Purchased
• Fastens the assembly together

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Assembly

• Attaching the front frame and side frames

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Fastening the Assembly

• Height of screw 5mm
• Height of side frame 3.25mm
• Height of hex nut 1.6
• 0.15mm extra

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Processes Involved

• Plastic injection molding
• Frames and sides
• CNC machining
• Bore holes in the frames and sides
• Ultra sonic welding
• Connects the two frames together
• Laser Cutting
• Engrave details
• Cut lenses

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Materials Cost
Item Unit price Total Unit Cost Source
Screw .03 25.00 Boltdepot.com
Nut .02 14.00 Boltdepot.com
Washer .01 9.00 Boltdepot.com
Lens plastic .05/in2 135.00 Tapplastics.com
TOTAL--------------- 183.00 ------------------------

• With an approximation of 200 to produce 400
  pairs of glasses, this design is well under the
  3000 budget
• It costs 0.50 to manufacture one pair of
  sunglasses

For screws, washers, and nuts http//www.boltdepo
t.com/Product-Details.aspx?product6844
For plastic sheets http//www.tapplastics.com/pro
duct/plastics/cut_to_size_plastic/acrylic_sheets_t
ransparent_colors/519
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Questions?