Power scrubber

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Revision as of 14:42, 20 September 2012 (view source) Bantoine@andrew.cmu.edu (Talk | contribs) (→Failure Mode and Effect Analysis) ← Older edit		Revision as of 14:42, 20 September 2012 (view source) Bantoine@andrew.cmu.edu (Talk | contribs) (→Failure Mode and Effect Analysis) Newer edit →
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Revision as of 14:42, 20 September 2012

Contents 1 Exectuve Summary 2 Major Product Stakeholder Analysis 3 Product User Study 4 Mechanical Function 5 Parts List 6 Design For Manufacturing and Assembly 6.1 DFM 6.2 DFA 7 Failure Mode and Effect Analysis 8 Design For Environment 9 The Team 10 References

Exectuve Summary

Major Product Stakeholder Analysis

We identified four major categories of stakeholders for our product. They are manufacturers, shipping & transportation companies, retailers, and consumers.

Stakeholder Objectives

• Manufacturers

 Low cost raw materials
 Simple manufacturing process required for materials chosen -- easy for mass production
 Energy efficient manufacturing process
 Recyclable materials
 Easy assembly
 Low cost packaging

• Shipping & transportation companies

 Firmly packaged
 Light weight packaging
 Space efficient mass packaging
 

• Retailers

 Appearance 
 Cost
 Marketability (consumer needs)
 Durability
 

Stakeholder Needs and Wants
Stakeholder	Needs	Wants
Consumer	Product should not require much force to hold/use (proper level of vibration, weight, etc.) Energy efficiency (and soap usage reduction) Customization (comfortable to use)	Maximize performance & minimize cost Lightweight and space efficient Ergonomic (material of handle part) Durability (especially of the sponge)
Retailer	Cheap & durable materials Lower electricity(batteries) use
Manufacturer	Cheap & easily processed materials Mass production Easy assembly	Volume-efficient materials
Shipping & Transportation	Lightweight Durability	Space-efficient packaging

Product User Study

Mechanical Function

Parts List

Design For Manufacturing and Assembly

DFM

The product use standarize components for many of the components such as the screws, motor, and velcro. All the conducting metal pieces have similar dimations, which requires fewer tools and setups during the manufacturing process. Also, most parts are made of the same materisl, ABS, with injection molding. The product take advantages of the rubber rings as a seal for water proofing as well as a locking mechanism for holding parts together.

DFA

Failure Mode and Effect Analysis

Item and Function	Failure Mode	Effects of Failure	S	Causes of Failure	O	Design Controls	D	RPN	Recommended Actions
Battery Housing	Battery housing comes loose	No Power Source	4	Not closed properly	4	Scrubber would not turn on	2	32	A clicking mechanism
Button: ON/OFF	Button sticks	Can't turn on or can't turn off	Row 2, column 3	Row 2, column 3	Row 2, column 3	Row 2, column 3	Row 2, column 3	Row 2, column 3	Row 2, column 3

Design For Environment

	Production	Use
Item purchased	Power Scrubber Manufacturing	Battery	Sponge	Soap	Water
a) Picture
b) Economic Sector Name and #	Small Electric appliance #335210	Primary battery manufacturing #335912	Broom, brush, and mop manufacturing #339994	Soap and cleaning compound manufacturing #325610	Water, sewage and other systems #221300
c) Reference Unit	1 item	4 batteries	1 piece	16 oz/bottle	19.5 gallon/day

The Team

Team Leader: Xin (Pam) Hu

DFMA Leader: Ken-Soh (Robert) Mai

FMEA Leader: Ben Antoine

DFE Leader: Kelle Patterson

User Study Leader: Shao-Chuan (Ted) Fang

References