Automatic can opener
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{| class="wikitable" border="1" | {| class="wikitable" border="1" | ||
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- | ! Part Number !! Part Name !! Qty !! Function !! Manufacturing Process | + | ! Part Number !! Part Name !! Qty !! Function !! Manufacturing Process !! Picture |
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! 001 | ! 001 | ||
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*Protects against cutting wheel | *Protects against cutting wheel | ||
*Holds magnet | *Holds magnet | ||
- | || Injection Molded Plastic | + | || Injection Molded Plastic ||[[Image:Team5AutoCanOpenerBatteryCover.JPG|100px]] |
|- | |- | ||
! 002 | ! 002 | ||
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*Holds button in place | *Holds button in place | ||
*Holds internal components | *Holds internal components | ||
- | || Injection Molded Plastic | + | || Injection Molded Plastic || [[Image:Team5AutoCanOpenerInsideTop.JPG|100px]] |
|- | |- | ||
! 004 | ! 004 | ||
| Screws(large) || 7 || | | Screws(large) || 7 || | ||
*Used to fasten top and bottom cases together | *Used to fasten top and bottom cases together | ||
- | || Cast | + | || Cast || [[Image:Team5AutoCanOpenerScrews.JPG|100px]] |
|- | |- | ||
! 005 | ! 005 | ||
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*Provides pressure so that cutting wheel can pierce can | *Provides pressure so that cutting wheel can pierce can | ||
*Rotates opener around can | *Rotates opener around can | ||
- | || Cast or Forged | + | || Cast or Forged |
|- | |- | ||
! 007 | ! 007 | ||
| Cap Screw || 1 || | | Cap Screw || 1 || | ||
*Attaches cutting wheel to gearing | *Attaches cutting wheel to gearing | ||
- | || Cast | + | || Cast |
|- | |- | ||
! 008 | ! 008 | ||
| Washer || 1 || | | Washer || 1 || | ||
*Provides adequate spacing between cap screw and cutting wheel | *Provides adequate spacing between cap screw and cutting wheel | ||
- | || Stamped | + | || Stamped || [[Image:Team5AutoCanOpenerCuttingComponents.JPG|100px]] |
|- | |- | ||
! 009 | ! 009 | ||
| Cutting Wheel || 1 || | | Cutting Wheel || 1 || | ||
*Cuts through can to remove lid | *Cuts through can to remove lid | ||
- | || Stamped | + | || Stamped || [[Image:Team5AutoCanOpenerCuttingComponents.JPG|100px]] |
|- | |- | ||
! 010 | ! 010 | ||
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*Keeps opener mounted to can lid | *Keeps opener mounted to can lid | ||
*Lifts top of can off when opener is lifted off | *Lifts top of can off when opener is lifted off | ||
- | || Cast | + | || Cast || [[Image:Team5AutoCanOpenerMagnet.JPG|100px]] |
|- | |- | ||
! 011 | ! 011 | ||
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| Main button || 1 || | | Main button || 1 || | ||
*Initially turns on power to engage motor | *Initially turns on power to engage motor | ||
- | || Injection Molded Plastic | + | || Injection Molded Plastic || [[Image:Team5AutoCanOpenerButton.JPG|100px]] |
|- | |- | ||
! 016 | ! 016 | ||
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| Motor || 1 || | | Motor || 1 || | ||
*Drives geartrain, movement wheel, and cutting wheel | *Drives geartrain, movement wheel, and cutting wheel | ||
- | || Electrical Assembly, Case Drawn | + | || Electrical Assembly, Case Drawn || [[Image:Team5AutoCanOpenerMotor.JPG|100px]] |
|- | |- | ||
! 020 | ! 020 | ||
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|| Extruded | || Extruded | ||
|} | |} | ||
+ | |||
+ | The geartrain is very compact although it does allow for a large conversion from motor speed to torque allowing for an easily made cut. | ||
+ | |||
+ | [[Image:Team5AutoCanOpenerGeartrain.JPG|400px]] | ||
+ | |||
+ | [[Image:Team5AutoCanOpenerGears.JPG|400px]] | ||
==DFMA, FMEA, DFE Analysis== | ==DFMA, FMEA, DFE Analysis== |
Revision as of 02:06, 12 February 2007
Contents |
Product Dissection
The following notes were taken prior to and during product dissection.
Function/Purpose:
This can opener provides a low effort method to opening any size can.
Inputs/Outputs:
- INPUTS: Battery Power
- INPUTS: Positioning of opener
- INPUTS: Press button until unit begins to move
- OUTPUTS: Cut through can to open
- OUTPUTS: Rotates around can
Use:
1. Opener is removed from storage place and placed in position on top of can.
2. Button is held until opener begins to move.
3. Let go and wait for opener to finish.
- If the can is larger than a standard soup can multiple cycles must be used.
4. Lift the opener off of the can.
- Because of the magnet, this also lifts the top off of the can.
5. Remove top of can from opener and replace opener in storage place.
Functional Operation:
1. Opener is positioned on can, which presses a safety switch.
2. Button on top is pressed to close main circuit using manual switch.
3. Motor engages and turns several gears to drive movement wheel and move the cutting wheel into position.
- There are four gears used to gear down the movement wheel, with a fifth gear to further slow the cutting wheel.
4. As cutting wheel gets into position, the main circuit is closed using an automatic switch that is pressed by the top of the cutting wheel shaft.
5. The cutting wheel is even further geared down using a secondary portion to its gear. This allows it to rotate roughly ten degrees about six times through the cutting process.
6. When the cycle is nearly completed the cutting wheel is retracted again and the automatic switch is released, stopping the opener.
7. A magnet on the underside of the opener lifts the top of the can with it when the opener is lifted off.
Components
The can opener has several components and electrical assemblies. It appears that most are purchased from suppliers while casings are injection molded in house. Some components seem like they could be removed to allow for a faster and easier assembly. Also, with a large enough scale of production, it may be beneficial to begin making some of the injection molded gears in house as well. Much more detail as to what individual components are used, what their purpose is, and their likely manufacturing processes.
The geartrain is very compact although it does allow for a large conversion from motor speed to torque allowing for an easily made cut.