Can Opener
From GICLWiki
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== Function == | == Function == | ||
This can opener is manufactured by Durabrand. The primary function of the can opener is to open cans by cutting the metal lid off. An electrical motor spins the geared wheel, which in turn spins the can. The blade remains stationary as it cuts the lid off. | This can opener is manufactured by Durabrand. The primary function of the can opener is to open cans by cutting the metal lid off. An electrical motor spins the geared wheel, which in turn spins the can. The blade remains stationary as it cuts the lid off. | ||
Latest revision as of 16:49, 17 February 2008
By Nancy Renteria, Adam Lantz, Dan Zvara
Contents |
Function
This can opener is manufactured by Durabrand. The primary function of the can opener is to open cans by cutting the metal lid off. An electrical motor spins the geared wheel, which in turn spins the can. The blade remains stationary as it cuts the lid off.
User Requirements
- plug outlet
- magnet holds standard size canned product
- fits standard cans
- blade cuts through standard can lid
- small enough to fit on kitchen counter
- cuts lid quickly
- long lifetime
- non-corrosive blade and geared wheel
- easy to use
- small force required to push lever arm
- aesthetically pleasing
Engineering Specifications
- power consumed (W)
- maximum force exerted on magnet without failure (lbs)
- allowable can height and width (in)
- maximum thickness of lip on lid (in)
- force need to puncture can lid (lbs)
- volume (in^3)
- time it takes to cut standard lid (sec)
- motor lifetime (yrs)
- time it takes for blade to dull (yrs)
- corrosion value (#)
- force required to push lever arm (lbs)
- percentage of customers who like appearance (%)
- number of colors available (#)
Parts
The table belows lists the Bill of Materials for the Durabrand Can Opener:
| Part # | Part Name | Category | Function | Material | Picture |
|---|---|---|---|---|---|
| 1 | Casing | Structural component | Holds, protects, and supports internal and external components | ABS plastic |  |
| 2 | Guide bar | Support element | Guides lever arm and can | Metal |  |
| 3 | Magnet | Support element | Holds can lid | Ceramics |  |
| 4 | Geared wheel | Output | Rotates can | Metal |  |
| 5 | Cutting blade | Output | Cuts though can lid | Metal |  |
| 6 | Lever arm | Structural component | Holds blade and magnet; on/off switch | Plastic |  |
| 7 | Motor | Input | Rotates the geared wheel | Metal plate, coil |  |
| 8 | Medium gear | Output | Converts the electrical energy into the horizontal mechanical energy | Metal, plastic, and ball bearings |  |
| 9 | Large gear | Transmission | Reduces speed of rotation and provides more torque; connects to geared wheel | Inner gear - metal; outer gear - plastic |  |
| 10 | Switch | Power supply | Completes circuit; on/off switch | Copper with plastic plate (nonconductor) |  |
| 11 | Power cord | Power supply | Supplies power to motor | Wires and insulation with a metal connection |  |
Large Gear and Geared Wheel Module
Decisions:
- type of material
- gear ratio to reduce angular velocity
Critical features:
- radius
- gear tooth size
- life expectancy
Expected loading:
- weight of can
Measures to evaluate performance:
- measure angular velocity
- force exerted on geared wheel
- friction between geared wheel and can
- friction between gear shaft and support structure
Medium Gear
Decisions:
- type of material
- gear ratio to reduce angular velocity
Critical features:
- radius
- tooth size
- life expectancy
Expected loading:
- force on teeth
Measures to evaluate performance:
- measure angular velocity
- stress tests
- friction of gears
- friction of shaft
Motor and Shaft Module
Decisions:
- size
- power requirement
Critical features:
- power output
- electrical connection
Expected loading:
- resistance to friction
- weight of can
Measures to evaluate performances:
- torque
- speed
- lifetime
