Lissia Barbosa Portfolio

Addition and Subtraction Toy

Description

Image Gallery

Aim
Create an original and portable fully mechanical single-digit
addition and subtraction toy for children.

My Contributions

  • Developed complete mechanism from first principles, including
    hard stops, spring loaded dials, gear system and ratios.
  • Completed CAD work from start to finish.

Skills Gained

  • Mechanical design, 
  • SolidWorks
  • Gear systems
  • Spring loaded systems
Addition side (external)
Addition side (external)
Subtraction side (external)
Subtraction side (external)
Subtraction side (internal)
Subtraction side (internal)
Addition side (internal)
Addition side (internal)
Dial hard stop
Dial hard stop
Number wheel hard stop
Number wheel hard stop
Dial cover hard stop
Dial cover hard stop
Number slot hard stop
Number slot hard stop
Spring-dial system
Spring-dial system
First sketch of design
First sketch of design
Sketches of internal designs
Sketches of internal designs