Paper towel dispenser
From DDL Wiki
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!Part No.!! Name !! Function !! Failure Mode !! Effects of Failure !! S !! Causes of Failure !! O !! Design Controls !! D !! RPN !! Recommended Actions !! Responsibility | !Part No.!! Name !! Function !! Failure Mode !! Effects of Failure !! S !! Causes of Failure !! O !! Design Controls !! D !! RPN !! Recommended Actions !! Responsibility | ||
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- | | 01 || Front Housing || Protects device from exterior || Fractured || Exposure of internal components || | + | | 01 || Front Housing || Protects device from exterior || Fractured || Exposure of internal components || |
|- | |- | ||
- | | 02 || Front Housing Clip|| Holds housings together ||Broken || Unable to attach housings together || | + | | 02 || Front Housing Clip|| Holds housings together ||Broken || Unable to attach housings together || |
|- | |- | ||
- | | 03 || Front Housing Tab|| Secures housing clip || Fractured | + | | 03 || Front Housing Tab|| Secures housing clip || Fractured || |
|- | |- | ||
- | | 04 || Rear Housing ||Holds mechanical components || Fractured || Unable to hold mechanical components | + | | 04 || Rear Housing ||Holds mechanical components || Fractured || Unable to hold mechanical components || |
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- | | 05 || Paper Towel Holding Arm ||Holds paper towel roll || Bent|| Unable to hold paper towel roll due to misaligned components | + | | 05 || Paper Towel Holding Arm ||Holds paper towel roll || Bent|| Unable to hold paper towel roll due to misaligned components || |
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- | | 08 || Screw Anchor || Holds screw in wall || Fractured || Unable to hold mechanical components | + | | 08 || Screw Anchor || Holds screw in wall || Fractured || Unable to hold mechanical components|| |
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- | | 09 || Paper Guide Tube ||Guides paper towel to cutting cylinder || Failed || | + | | 09 || Paper Guide Tube ||Guides paper towel to cutting cylinder || Failed || |
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- | | 10 || Spring (uneven hooks)||Holds 09 in place || Broken || Malfunctioning of mechanical spindle | + | | 10 || Spring (uneven hooks)||Holds 09 in place || Broken || Malfunctioning of mechanical spindle|| text |
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- | | 11 || Spring (even hooks) || Holds lever to spindle housing ||Broken ||Malfunctioning of mechanical spindle | + | | 11 || Spring (even hooks) || Holds lever to spindle housing ||Broken ||Malfunctioning of mechanical spindle|| text |
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- | | 14 || Locking Spring ||Hides screw in turning wheel || Broken || Unable to confine rotation direction of spindle | + | | 14 || Locking Spring ||Hides screw in turning wheel || Broken || Unable to confine rotation direction of spindle|| text |
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- | | 16 || Guide clips for 09 ||Guides paper on 09 | + | | 16 || Guide clips for 09 ||Guides paper on 09 ||text || text |
|- | |- | ||
- | | 18 || Guide clips for 09||Connects spring to spindle ||Malfunctioning of mechanical spindle | + | | 18 || Guide clips for 09||Connects spring to spindle ||Malfunctioning of mechanical spindle|| text ||text ||text |
|- | |- | ||
| 19 || Spring Connector ||Connects two springs to lever arm ||Malfunctioning of mechanical spindle | | 19 || Spring Connector ||Connects two springs to lever arm ||Malfunctioning of mechanical spindle |
Revision as of 03:57, 18 September 2009
Contents |
Executive Summary
Stakeholders
There are five major stakeholders with regards to the paper towel dispenser: Manufacturer, retailer, customer, user, society. The main needs for the manufacturer are to reduce cost and create a reliable product. For the retailer, it is being able to sell a quality product. For the customer, it is making sure it is an affordable and reliable machine. For the customer, cleanliness and ease of use are paramount. Society plays a role with regards to how the use of paper towel affects the ecosystem and earth in general. Listed below are the stakeholders and their respective needs.
Paper Towel Manufacturer
- Material cost
- Manufacturing cost
- Assembly
- Transporting
- Standardize/minimize parts
Retailer
- Cost
- Storage
- Reliability
- Usability
- Transporting
Customer
- Cost
- Mounting
- Ease of use
- Reliability
- Aesthetics
User
- Ease of use / ergonomics
- Speed of operation
- Aesthetics
- Cleanliness
Society
- Environment
Usability Study
Parts List
DFMA Analysis
Design For Manufacture
Design For Assembly
FMEA Analysis
Part No. | Name | Function | Failure Mode | Effects of Failure | S | Causes of Failure | O | Design Controls | D | RPN | Recommended Actions | Responsibility |
---|---|---|---|---|---|---|---|---|---|---|---|---|
01 | Front Housing | Protects device from exterior | Fractured | Exposure of internal components | ||||||||
02 | Front Housing Clip | Holds housings together | Broken | Unable to attach housings together | ||||||||
03 | Front Housing Tab | Secures housing clip | Fractured | |||||||||
04 | Rear Housing | Holds mechanical components | Fractured | Unable to hold mechanical components | ||||||||
05 | Paper Towel Holding Arm | Holds paper towel roll | Bent | Unable to hold paper towel roll due to misaligned components | ||||||||
08 | Screw Anchor | Holds screw in wall | Fractured | Unable to hold mechanical components | ||||||||
09 | Paper Guide Tube | Guides paper towel to cutting cylinder | Failed | |||||||||
10 | Spring (uneven hooks) | Holds 09 in place | Broken | Malfunctioning of mechanical spindle | text | |||||||
11 | Spring (even hooks) | Holds lever to spindle housing | Broken | Malfunctioning of mechanical spindle | text | |||||||
14 | Locking Spring | Hides screw in turning wheel | Broken | Unable to confine rotation direction of spindle | text | |||||||
16 | Guide clips for 09 | Guides paper on 09 | text | text | ||||||||
18 | Guide clips for 09 | Connects spring to spindle | Malfunctioning of mechanical spindle | text | text | text | ||||||
19 | Spring Connector | Connects two springs to lever arm | Malfunctioning of mechanical spindle | |||||||||
20 | Rounded Spring Guide | Angles spring to desired measurement | ||||||||||
21 | Thin Paper Guide | Guides paper out of device | User disatisfaction | |||||||||
22 | Front Spindle Housing | Final housing before paper leaves device | text | text | text | text | text | text | text | text | text | |
23 | Spindle Housing Back | Back of spindle housing | text | text | text | text | text | text | text | text | text |
DFE Analysis