Multi-Disciplinry Senior Design I: Drill QFD Example
NO INPUT IN THIS AREA
+
-
+ +
+
+
+
+
+
-
+ +
up nom nom
9 3
3 3
3 9 1 3
9
9
1
1
3
3 3
A Ab Ab
3 3 9 9
9 A A A 9
9
A Ab
b b b b b bA b
A
b b b b b bA b
A
12"x8"x4" 27
Yes 9
2%
Yes
1%
yes
A b
27
b A
0
b A
2%
< 1 intervention per 8hrs of Use
b A
0%
5% of Envelope Volume A
15% 201
90% acceptance Rating A
54
A
27
A b
4%
b
2%
54 4%
90% acceptance Rating
108 8%
> 100 in-lbs
90 7%
b
81
81
1
b
6%
A
Ab
10% 135
A
84
< 10 dB
< 5 lbs
A
6%
< 5 second
< 70 F
A b
6%
Resonant Frequency > 100 Hz
> 800 Watts
b
13% 183
b A
< 10 sec
b A
b
117
b A
b
81
Passes Industry Stndard Drop Test
A
9
9%
Raw score Relative Weight
Better
1 9
9
Better 5 4 Ab 3 2 Worse 1
3 A
9 3
3
Worse
9
9
1
2 A A A
9 9 1
1
Drill Envelope Volume
Is Reversible
Accepts Screwdriver Bits
Accepts Standard Drill Bits
Customer Intervention rate
Customer Perception
Storage Volume Available
Industrial Design Customer Acceptance Rating
Customer Comfort Rating
up dwn up
5
9 3 9 1
9 3
Torque
Noise Level
Time to Install Bit
Vibration
Weight
External Maximum Temperature
Power
Time to Drill Hole using a 3/8" Bit on 1' Think Hardwood
Durrable
up dwn nom dwn dwn dwn dwn dwn up up up Engineering Metrics
9
Technical Targets
Technical Benchmarking
+
4
9 9 3 3 9 3 9 3 3 1 9 9 9 3 3 3
+
Correlation Codes + + Very Positive + Positive - Negative - - Very Negative
6%
Customer Requirements Provides plenty of power to drill holes Makes holes faster than by hand Maintains power for several hours Can also drive screws The drill feels good in the users hand The drill is lightweight The drill is safe to use The user can easily resist the drill's twisting Can cotroll the speed at which holes are drilled The drill is reversible The drill is easy to set up The drill is easy to use The drill lasts a long time The drill is easy to store The drill is quiet The drill looks good The drill can store drill bits
Customer Weights
Durrable Time to Drill Hole using a 3/8" Bit on 1' Think Hardwood Power External Maximum Temperature Weight Vibration Time to Install Bit Noise Level Torque Customer Comfort Rating Industrial Design Customer Acceptance Rating Storage Volume Available Customer Intervention rate Accepts Standard Drill Bits Accepts Screwdriver Bits Is Reversible Drill Envelope Volume Preferred
