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Contents 1 Product Dissection 1.1 Function/Purpose: 1.2 Inputs/Outputs: 1.3 Use: 1.4 Functional Operation: 1.5 Components 1.6 DFMA, FMEA, DFE Analysis

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

Part Number	Part Name	Qty	Function
001	Battery Casing	1	Encloses batteries Protects against cutting wheel Holds magnet
002	Lower Shell	1	Holds Batteries Holds internal components
003	Upper Shell	1	Holds button in place Holds internal components
004	Screws(large)	7	Used to fasten top and bottom cases together
005	Pressure switch	2	Safety feature to make sure battery casing is on Safety feature to make sure opener is positioned on can
006	Movement Wheel	1	Provides pressure so that cutting wheel can pierce can Rotates opener around can
007	Cap Screw	1	Attaches cutting wheel to gearing
008	Washer	1	Provides adequate spacing between cap screw and cutting wheel
009	Cutting Wheel	1	Cuts through can to remove lid
010	Magnet	1	Keeps opener mounted to can lid Lifts top of can off when opener is lifted off
011	Reverse Switch	1	Reverses the direction of the motor
012	Manual Pinion	1	Allows manual rotation of the gear system using a screwdriver
013	Positive Terminal	2	Attaches to positive end of battery
014	Negative Terminal	2	Attahced to negative end of battery
015	Main button	1	Initially turns on power to engage motor
016	Internal Switch	2	Completes circuit to power motor
017	Switch Spacer	1	Spreads switch blades so it is only engaged when button is pressed
018	Screw(small)	1	Mounts Switch Spacer to Upper Shell
019	Motor	1	Drives geartrain, movement wheel, and cutting wheel
020	Circuit Board	1	Allows reverse switch to reverse the motor's polarity
021	Motor Pinion	1	Transfers motor rotation to geartrain
022	Ratio Gears	3	Gear down motor output to usable speed and torque
023	Movement Gear	1	Drives the movement wheel Drives the cutting gear
024	Bent Pin	1	Attaches movement gear to movement wheel
025	Cutting Gear	1	Moves cutting wheel into position Slowly rotates cutting wheel
026	Slow Drive Gear	1	Moves the cutting gear slowly while engaged
027	Shaft	6	Mounts gears

DFMA, FMEA, DFE Analysis