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Revision as of 23:53, 5 February 2012

Executive Summary

Your executive summary is not a table of contents -- it is a summary of major findings and recommendations.

You are to provide the key information an executive would need to make a decision in just a few sentences.

Focus on your findings, conclusions, and recommendations rather than telling a chronological story. Bad example: "We identified custimer needs and then we analyzed the product using DFMA, DFE, and FMEA." Good example: "The competitor product is well-designed for manufacturing and assembly, with a low part count and appropriate choice of materials and processes. However, we recommend consolidating the housing into a single part and replacing fasteners with snap fits to further reduce part count and production cost."

Stakeholder Analysis

In performing a product use study the following stakeholders and their needs were identified and documented. Even though the list contains many eccentric interests, there are many shared values.

Usage

Product Use Steps

	Mop and Bucket Combination				Self-Wringing Folding Mop
Step #	Description	Image		Step #	Description	Image
1	Make a mess			1	Make a mess
2	Fill bucket with water			2	Obtain a bucket
3	Add recommended amount of cleaning solution			3	Fill bucket with water
4	Put mop in bucket			4	Add recommended amount of cleaning solution
5	Move mop to wringer			5	Put mop in bucket
6	Wring out mop			6	Slide wringer towards end of mop, over the bucket
7	Mop floor (i.e. move back and forth across desired dirty surface)			7	Mop floor (i.e. move back and forth across desired dirty surface)
8	Repeat steps 4-7 until desired cleanliness is achieved	N/A		8	Repeat steps 5-7 until desired cleanliness is achieved	N/A
9	Empty bucket			9	Empty bucket
10	Repeat steps 2-3 as desired	N/A		10	Repeat steps 3-4 as desired	N/A

User Studies

Mechanism

Bill of Materials

Figure 1: Exploded view of mop bucket

Figure 2: Exploded view of wringer sub-assembly

Figure 3: Exploded view of folding mop

Sub-assembly	Part	Quantity	Description	Material	Manufacturing Process	Weight (g)	Image
Bucket	Bucket	1	Holds water and cleaning solution, collects water drained from mop	Plastic	Injection Molded	3,413
	Bucket Handle	1	Allows user to pick up bucket (e.g. move up/down stairs, into car)	Aluminum	Extruded, cut, bent	219
Wringer	Upper Wringer Plate	1	Translates toward the bottom wringer plate to compress the mop head and squeeze water into bucket	Plastic	Injection Molded	781
	Bottom Wringer Plate (Wringer Base)	1	Provides a rigid surface for the upper wringer plate to compress the mop head against	Plastic	Injection Molded	1520
	Linkage Stabilizing Pin	1	Creates a uniform starting point for linkages to push off from thereby stabilizing upper wringer plate when being compressed	Aluminum	Extruded, cut	48
	Upper Wringer Plate Linkage	4	Controls translation of upper wringer plate towards bottom wringer plate to compress mop head	Steel	Stamped	69
	Rivet	2	Secures wringer lever to linkages	Aluminum	Purchased	4
	Wringer Lever	1	Controls movement of upper wringer plate and therefore the compression of the mop head	Aluminum	Extruded, cut, bent (purchased)	937
	Lever Handle Cover	1	Provides friction surface and safety feature for operating lever
	Level Torsional Spring	1	Resists compression of upper wringer plate and returns it to its original, open position	Aluminum	Extruded, bent (purchased)	4.4
Wheel	Wheel Bolt	4	Secures wheel inside wheel mount	Aluminum	Purchased	18
	Wheel Nut	4	Secures wheel inside wheel mount	Aluminum	Purchased	4
	Wheel Mount	4	Provides interface to connect wheels to bottom of bucket	Plastic	Injection Molded	67
	Wheel Mount Pin	4	Connects the bucket interface to wheel bolt lock	Aluminum	Purchased	21
Folding Mop	Sponge	1	Soaks up water, cleans floor	Synthetic Sponge	Purchased, cut	50
	Scrubbing Pad	1	Allows scrubbing for hard to clean messes	Plastic	Purchased, cut	<1
	Folding Plates Spring	1	Returns two folding plates to linear position to mop floor	Aluminum	Extruded, cut, bent (purchased)	4
	Folding Sponge Plate	2	Folds towards opposite plate to squeeze excess water out of sponge	Plastic	Injection Molded	23
	Mop End Cover	1	Allows for the mop to be hung on a hook/nail, provides aesthetic design	Plastic	Injection Molded	18
	Plate Folding Handle	1	Slides along mop rod to fold bottom plates together and squeeze out excess water	Plastic	Injection Molded	38
	Sponge Mount	1	Attaches sponge to mop rod	Plastic	Injection Molded	47
	Mop Rod	1	Controls movement of the mop head	Aluminum	Extruded, cut	186
	Folding Handle Pin	1	Secures handle to the folding rod	Aluminum	Purchased	<1
	Folding Rod	1	Translated force from folding handle to folding plate spring and plates	Aluminum	Extruded, cut, bent	35
	Folding Plate Compressor	1	Pushes the folding plates towards each other to squeeze out excess water	Aluminum	Extruded, cut, bent	51
	Folding Plate Compressor Roller	2	Rolls along folding plates and pushes them together as the folding handle is pushed toward the mop head	Plastic	Injection Molded	2

Design for Manufacturing Analysis

Are there opportunities to improve manufacturability and make a competing product cheaper? Identify where material and process choices are appropriate or inappropriate for expected production volume.

Failure Mode and Effect Analysis

Are there important failure modes that should be considered in a redesign or a new design? Please focus on use phase, rather than manufacturing.

Design for the Environment

What is the major source(s) of CO2 in the product's life cycle? If Congress were to pass a tax on CO2, would this have a significant impact on the cost of production or use of the product?

Group Dynamic

Team lead:

DFMA lead:

FMEA lead:

DFE lead:

Summary of team chemistry

= References =