Paper towel dispenser
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| 06 || Phillips Head Screw (1/8'' x 1/4'' long) || Secures device to rear housing || 1 || 1g || Steel || Machined || [[Image:PTD Phillips Head Screw.jpg| 100x100px]] | | 06 || Phillips Head Screw (1/8'' x 1/4'' long) || Secures device to rear housing || 1 || 1g || Steel || Machined || [[Image:PTD Phillips Head Screw.jpg| 100x100px]] | ||
|- | |- | ||
- | | 07 || Wall Mounting Screw | + | | 07 || Wall Mounting Screw (1/8'' x 1.25'' long) || Secures housing to wall || 4 || 3.5g each || Steel || Machined || [[Image:PTD Wall Mounting Screw.jpg| 100x100px]] |
|- | |- | ||
- | | 08 || Screw Anchor || Holds screw in wall || 4 || ~0.25g || Plastic || Injection molding || [[Image: | + | | 08 || Screw Anchor || Holds screw in wall || 4 || ~0.25g || Plastic || Injection molding || [[Image:PTD Screw Anchor.jpg| 100x100px]] |
|- | |- | ||
- | | 09 || Paper Guide Tube || Guides paper towel to cutting cylinder || 1 || 55g || Plastic || Injection molding || [[Image: | + | | 09 || Paper Guide Tube || Guides paper towel to cutting cylinder || 1 || 55g || Plastic || Injection molding || [[Image:| 100x100px]] |
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- | | 10 || Spring (uneven hooks) || Holds 09 in place || 2 || 2g each || Metal || Extrusion || [[Image: | + | | 10 || Spring (uneven hooks) || Holds 09 in place || 2 || 2g each || Metal || Extrusion || [[Image:PTD Spring (uneven hooks).jpg| 100x100px]] |
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- | | 11 || Spring (even hooks) || Holds lever to spindle housing || 2 || 1.5g each || Metal || Extrusion || [[Image: | + | | 11 || Spring (even hooks) || Holds lever to spindle housing || 2 || 1.5g each || Metal || Extrusion || [[Image:PTD Spring (even hooks).jpg| 100x100px]] |
|- | |- | ||
- | | 12 || Screw (3/32'' x 5/8'' long) || holds turning wheel and lever to spindle housing || 2 || ~1g each || Metal || Extrusion || [[Image: | + | | 12 || Screw (3/32'' x 5/8'' long) || holds turning wheel and lever to spindle housing || 2 || ~1g each || Metal || Extrusion || [[Image:| 100x100px]] |
|- | |- | ||
| 13 || Red Screw Cap || Hides screw in turning wheel || 1 || <1g || Plastic || Injection molding || [[Image:Example.jpg| 100x100px]] | | 13 || Red Screw Cap || Hides screw in turning wheel || 1 || <1g || Plastic || Injection molding || [[Image:Example.jpg| 100x100px]] |
Revision as of 11:48, 16 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
FEMA 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 | text | text | text | text | text | text | text | text | text | |
02 | Front Housing Clip | Holds housings together | Fractured | text | text | text | text | text | text | text | text | text | |
03 | Front Housing Tab | Secures housing clip | Fractured | text | text | text | text | text | text | text | text | text | |
04 | Rear Housing | Holds mechanical components | Fractured | text | text | text | text | text | text | text | text | text | |
05 | Paper Towel Holding Arm | Holds paper towel roll | Bent | text | text | text | text | text | text | text | text | ||
08 | Screw Anchor | Holds screw in wall | Fractured | text | text | text | text | text | text | text | text | text | |
09 | Paper Guide Tube | Guides paper towel to cutting cylinder | Failed | text | text | text | text | text | text | text | text | text | |
10 | Spring (uneven hooks) | Holds 09 in place | Broken | text | text | text | text | text | text | text | text | text | |
11 | Spring (even hooks) | Holds lever to spindle housing | Broken | text | text | text | text | text | text | text | text | text | |
13 | Red Screw Cap | Hides screw in turning wheel | Fractured | text | text | text | text | text | text | text | text | text | |
14 | Locking Spring | Hides screw in turning wheel | Broken | text | text | text | text | text | text | text | text | text | |
15 | SRed Turning Wheel | Turns main spindle | Failed | text | text | text | text | text | text | text | text | text | |
16 | Guide clips for 09 | Guides paper on 09 | text | text | text | text | text | text | text | text | text | ||
18 | Guide clips for 09 | Connects spring to spindle | text | text | text | text | text | text | text | text | text | ||
19 | Spring Connector | text | Connects two springs to lever arm | text | text | text | text | text | text | text | text | ||
20 | Rounded Spring Guide | Angles spring to desired measurement | text | text | text | text | text | text | text | text | text | ||
21 | Thin Paper Guide | text | Guides paper out of device | text | text | text | text | text | text | text | text | ||
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