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Revision as of 21:16, 23 September 2007

Executive Summary

During our product analysis of a Dirt Devil Swift Stick we came across several notable observations. As we went through the uses of the product and used them for its main function a few basic problems occured. These problems ranged from small annoyances to major hazzards. This caused us to further look into customer needs and how they can be addressed for this product. Once the product uses and customer needs were completely documented the product was dissected and all of the parts were analysed and documented in detail. This gave us a more complete understanding of how this product was manufactured and assembled. The dissection gave us a basis for further analysis. This further analysis included DFMA, FMEA, DFE, and Quantitative Mechanical Analysis. From these analyses, decisions could be made to improve upon any areas of manufacturing that could be lacking or cause ill effects on the environment.

Product Evaluation

During product evaluation our group used the vacuum cleaner in an everyday use situation. We noted things that worked well along with external problems that occured with everyday use.

Function

Product Uses

Customer Needs

Bill of Materials

Part #	Name	Quantity	Weight	Function	Manufacturing Process	Material	Image
A-001	Short Screw	4	< 1g	Holds plastic cover on vacuum head	?	?
A-002	Long Screw	1	< 1g	Holds plastic cover on vacuum head	?	?
A-003	Small Screw	2	< 1g	Holds cover on vaccum channel	?	?
A-004	Swivel Connector	1	64g	Attachment joint allowing multiple andgles and ranges of motion	Injection molding	Plastic
A-005	Attachment Cover	1	101g	Asthetic cover to enclose the vacuum channel and wheels	Injection molding	Plastic
A-006	Vaccum Channel Cover	1	17g	Creates a vaccum channel do direct vacuumed debris	Injection molding	Plastic	[[ ]]
A-007	Main Wheel	2	14g	Allows vaccum to roll on various serfaces	Injection molding	Plastic
A-008	Attachment Base	1	117g	Creates vacuum channel and holds wheels	Injection molding	Plastic
H-001	Large Screw	1	5g	Holds handle to main vacuum housing	?	?
H-002	Bottom Cord Hanger	1	12g	Provides a place to wrap cord	Injection molding	Plastic
H-003	Small Screw	2	< 1g	Holds handle and switch housing together	?	?
H-004	Handle (Left Half)	1	23g	Creates a housing for the switch assembly and allows for a place to grasp	Injection molding	Plastic
H-005	Handle (Right Half)	1	23g	Creates a housing for the switch assembly and allows for a place to grasp	Injection molding	Plastic
H-006	Shaft	1	63g	Extension for handle to hold vacuum at comfortable height	?	?
H-007	Switch Activatior	1	20g	Connects circuit to turn power on	?	?
H-008	Thumb Switch	1	4g	Activated by user to turn power on or off	Injection molding	Plastic
H-009	Adjustible Cord Hanger	1	2g	Place to wrap cord with quick release swivel to remove cord easily	Injection molding	Plastic
H-010	Cord Hanger Adjuster	1	<1g	Piece that connects to cord hanger and allows hanger to be adjusted into two positions	Injection Molding	Plastic	[[ ]]
H-011	Cord Hanger Adjuster Screw	1	<1g	Holds adjustable cord hanger and cord hanger adjuster together	?	?	[[ ]]
H-012	Thumb Switch Screw	1	< 1g	Holds thumb switch in place and connects the switch activator	?	?
W-001	Spring Clip	1	5g	Holds waste basket cover in place and provides a quick release	Injection molding	Plastic
W-002	Spring	1	< 1g	Pushes back on spring clip to keep cover closed	?	?
W-003	Filter	1	57g	Protects blower/motor for debris and keeps dust from being blown back out of the vacuum housing	Injection molding	Plastic and shear textile
W-004	Waste Basket Cap	1	20g	Opens to empty waste basket	Ejection molding	Plastic
W-005	Waste Basket	1	270g	Holds vacuumed debris	Injection molding	Plastic
V-001	Small Screws	7	< 1g	Holds cover on motor assembly	?	?
V-002	Spring	1	< 1g	Pushes back on spring clip to keep waste basket connected to the vacuum housing assembly	?	[[ ]]
V-003	Spring Clip	1	5g	Holds waste basket in place and provides a quick release	Injection molding	Plastic
V-004	Motor Assembly Cover	1	168g	Housing for motor/blower and fuse	Injection molding	Plastic
V-005	Motor Assembly Holder	1	158g	Housing for motor/blower and fuse	Injection molding	Plastic	[[ ]]
V-006	Switch Screw	1	< 1g	Holds power switch in place	?	?
V-007	Vibration Mount	2	< 1g	Lowers vibrational forces and noise from the motor/blower	?	Rubber
V-008	Motor	1	459g	Creates partial vacuum by spinning	Winding, Extrusion, Injection molding	Plastic, Copper, Steel, Aluminum
V-009	Fuse	1	< 1g	Prevents electrical disturbances from reaching the motor	Multiple	Glass, Aluminum
V-010	Electrical Cord	1	262g	Carries current to the vacuum	Extrusion and Molding	Rubber, Copper	[[ ]]

Product Analysis

Design for Manufacturing and Assembly

Current DFMA

Recommended Improvements

Failure Mode Effects Analysis

Design for Environment

Quantitative Mechanical Analysis