Paper towel dispenser
From DDL Wiki
(Difference between revisions)
(→FMEA Analysis) |
(→FMEA Analysis) |
||
Line 153: | Line 153: | ||
| 16 || Guide clips for 09 ||Guides paper on 09 ||text || text | | 16 || Guide clips for 09 ||Guides paper on 09 ||text || text | ||
|- | |- | ||
- | | 18 || | + | | 18 || Lever Arm ||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 15:49, 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 | Fractures | Exposure of internal components | ||||||||
02 | Front Housing Clip | Holds housings together | Breaks | Unable to attach housings together | ||||||||
03 | Front Housing Tab | Secures housing clip | Fractures | |||||||||
04 | Rear Housing | Holds mechanical components | Fractures | Unable to hold mechanical components | ||||||||
05 | Paper Towel Holding Arm | Holds paper towel roll | Bends | Unable to hold paper towel roll due to misaligned components | ||||||||
08 | Screw Anchor | Holds screw in wall | Fractures | Unable to hold mechanical components | ||||||||
09 | Paper Guide Tube | Guides paper towel to cutting cylinder | Failed | |||||||||
10 | Spring (uneven hooks) | Holds 09 in place | Breaks | Malfunctioning of mechanical spindle | text | |||||||
11 | Spring (even hooks) | Holds lever to spindle housing | Breaks | Malfunctioning of mechanical spindle | text | |||||||
14 | Locking Spring | Hides screw in turning wheel | Breaks | Unable to confine rotation direction of spindle | text | |||||||
16 | Guide clips for 09 | Guides paper on 09 | text | text | ||||||||
18 | Lever Arm | 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 | Breaks | Improper fit/ Unable to hold spindle | ||||||||
29 | White Teeth Guide/Arm | Guides cutting teeth in spindle | Bends/Breaks | Unable to cut papers/User dissatisfaction | ||||||||
30 | Cutting Teeth | Back of spindle housing | Wears/Breaks | |||||||||
31,32 | Spindle | Back of spindle housing |
DFE Analysis
Team Member Roles
- Eric Totong:
- Chang Keun Jung:
- James Li-Yang Lee:
- Nishan Kulatilaka: