Paper towel dispenser
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| 27 || Screw (3/32'' x 3/8'' long) || Connects spindle halves || 2 || <1g || Metal || Machined || [[Image:PTD Screw (3-32x3-8)(2).jpg| 100x100px]] | | 27 || Screw (3/32'' x 3/8'' long) || Connects spindle halves || 2 || <1g || Metal || Machined || [[Image:PTD Screw (3-32x3-8)(2).jpg| 100x100px]] | ||
|- | |- | ||
- | | 28 || Square nut || For use with 27 || 2 || <1g || Steel || Cast and drilled || [[Image: | + | | 28 || Square nut || For use with 27 || 2 || <1g || Steel || Cast and drilled || [[Image:PTD Square Nut.jpg| 100x100px]] |
|- | |- | ||
- | | 29 || White Teeth Guide/Arm || Guides cutting teeth in spindle || 2 || 3g each || Plastic || Injection molding || [[Image: | + | | 29 || White Teeth Guide/Arm || Guides cutting teeth in spindle || 2 || 3g each || Plastic || Injection molding || [[Image:PTD White Teeth Guide.jpg| 100x100px]] |
|- | |- | ||
- | | 30 || Cutting Teeth || Cuts paper towel || 1 || 75g || Steel || Cast, punched and bent || [[Image: | + | | 30 || Cutting Teeth || Cuts paper towel || 1 || 75g || Steel || Cast, punched and bent || [[Image:PTD Cutting Teeth.jpg| 100x100px]] |
|- | |- | ||
- | | 31 || Spindle Top || Holds cutting tool || 1 || 125g || Plastic || Injection molding || [[Image: | + | | 31 || Spindle Top Half|| Holds cutting tool || 1 || 125g || Plastic || Injection molding || [[Image:PTD Spindle Top Half.jpg| 100x100px]] |
|- | |- | ||
- | | 32 || Spindle Bottom || Holds cutting tool || 1 || 135g || Plastic || Injection molding || [[Image: | + | | 32 || Spindle Bottom Half|| Holds cutting tool || 1 || 135g || Plastic || Injection molding || [[Image:PTD Spindle Bottom Half.jpg| 100x100px]] |
|- | |- | ||
- | | 33 || Metal Key || Helps open housing || 1 || 5g || Steel || Punched || [[Image: | + | | 33 || Metal Key || Helps open housing || 1 || 5g || Steel || Punched || [[Image:PTD Metal Key.jpg| 100x100px]] |
|} | |} | ||
Revision as of 12:28, 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