Paper towel dispenser
From DDL Wiki
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| 20 || Rounded Spring Guide ||Angles spring to desired measurement || | | 20 || Rounded Spring Guide ||Angles spring to desired measurement || | ||
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- | | 21 || Thin Paper Guide||Guides paper out of device || User dissatisfaction | + | | 21 || Thin Paper Guide||Guides paper out of device || Paper ejected in inconsistent direction/ User dissatisfaction |
|- | |- | ||
- | | 22 || Front Spindle Housing ||Final housing before paper leaves device || | + | | 22 || Front Spindle Housing ||Final housing before paper leaves device || |
|- | |- | ||
- | | 23 || Spindle Housing Back ||Back of spindle housing || | + | | 23 || Spindle Housing Back ||Back of spindle housing || |
+ | |- | ||
+ | | 24,25 || Spindle Housing (L,R) || Sides of spindle housing || Broken ||Improper fit/ Unable to hold spindle | ||
+ | |- | ||
+ | | 29 || White Teeth Guide/Arm||Guides cutting teeth in spindle || Bent/Broken || Unable to cut papers/User dissatisfaction | ||
+ | |- | ||
+ | | 30 || Cutting Teeth ||Back of spindle housing || Worn/Broken || | ||
+ | |- | ||
+ | | 31,32 || Spindle ||Back of spindle housing || | ||
+ | |- | ||
+ | |||
+ | |||
|} | |} |
Revision as of 04:03, 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 | Paper ejected in inconsistent direction/ User dissatisfaction | |||||||||
22 | Front Spindle Housing | Final housing before paper leaves device | ||||||||||
23 | Spindle Housing Back | Back of spindle housing | ||||||||||
24,25 | Spindle Housing (L,R) | Sides of spindle housing | Broken | Improper fit/ Unable to hold spindle | ||||||||
29 | White Teeth Guide/Arm | Guides cutting teeth in spindle | Bent/Broken | Unable to cut papers/User dissatisfaction | ||||||||
30 | Cutting Teeth | Back of spindle housing | Worn/Broken | |||||||||
31,32 | Spindle | Back of spindle housing |
DFE Analysis