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3
1.
2. The Work piece is a fail
prototype which the hole is
not perpendicular.
Having trouble on
operating hand drill??
Loves to DIY. However sometimes…
Lead to sadness and
disappointment.
Over Drill
The drilling process fail although marking was made on
the drill bits and the measurement unit attach on the
hand drill is to prevent over drill. However if over force
was applied it will still cause over drill.
Reason 2 : The method use for
prevent over drill is not effective
Reason 1 : The Drill is not Accurate
3.
4.
5. Drilling not accurate
User problem
Lack of experience
Never try before or lack of
practice
Afraid
Failure
Failure can cause the project cost increase
Drilling
vibration is
too high
No feedback Drilling position not
handle properly
Using
wrong
Drilling
tools
User
careless
The surface of the
material to be drill
is not smooth
The materials
selection is
wrong
If feedback process is properly done.
Then the accuracy of the drilling
process is increased.
But the loss of time and the device
complexity will be increased.
Improving Feature Worsening Feature
#24-Loss of Information #25-Loss of Time
#36-Device Complexity
NO Inventive principle
24 Intermediary
26 Copy
28
Mechanics
Substitution
32 Color Changes
Inertia Measurement Unit(IMU) is a
sensor that are used for balancing while
in this hand drill application, it function
by providing feedback on the degree of
angle of the hand drill
Ultrasonic sensor is the sensor to provide
feedback on the distance
