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| 中文摘要： | |
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本研究使用直徑
0.09
mm
之鑽頭鑽削
PCB
電性檢測專用型治具針
盤，透過田口實驗方法，設定轉速、進給率、鑽削方式、切削液等四種控制因子之不同水準值組合，進行實驗分析，利用荷重元、非接觸式量
測儀量、孔位精度分佈圖軟體，求取鑽削推力、孔位精度分析與孔徑精
度分析等數據，得到最佳鑽削工作參數組合，並對刀具壽命的影響進行
驗證實驗。
本研究依據田口法直交表設計
9
組鑽削實驗，從實驗結果中觀察到
鑽削力大小會影響鑽孔孔數的數量，並與鑽頭磨耗息息相關。將量測各
組實驗孔位精度與孔徑精度的數據，利用田口實驗方法計算
S/N
比，得
知具有最佳孔位精度的加工參數組合，為
A2B2C1D3，即
A2
轉速為
12,000rpm、B2
進給率為
6,000
mm/min、C1
鑽削模式為(a)
深孔鑽削循環
G83、
D3
切削液比為
1
公升油:
30
公升水；而具有最佳孔徑精度加工參數組合，
為
A2B1C3D2，即
A2
轉速
12,000
rpm、B1
進給率
5,000
mm/min、C3
鑽削模式(c)
斷屑鑽孔切削循環
G73、D2
切削液比為
1
公升油:
20
公升水。
將這二組最佳工作參數組合進一步進行驗證實驗，實驗結果顯示這二組參數組合在鑽削推力、孔位精度與孔徑精度的表現上，確實優於前面
9
組的表現，確認了田口分析法的有效性。而這二組參數組合的表現，又
以後者更為優異，亦即
A2B1C3D2
這組參數組合為本研究鑽削
PCB 電性
檢測專用針盤的最佳加工條件。
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| Abstract： | |
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The
purpose
of
this
study
is
using
a
0.09
mm-diameter drill
to
investigate
the
drilling
characteristics
in
an
in-circuit-test
(ICT)
probe
plate
for
printed
circuit
board
(PCB).
Through
Taguchi
Method,
four
control
factors,
namely
rotational
speed,
feed
rate,
drilling
method,
and
cutting
fluid,
are
selected
to
conduct
designed
experiments
and
analyze
the
results
of
drilling
force,
drill
hole
position
precision,
accuracy
of
hole
diameter,
and
drill
life.
Accordingly,
an
optimal
combination
of
working
parameters
for
the
given
drilling
task
is
determined
and
verified.
A
Taguchi
Orthogonal
Array
is
selected
to
design
and
conduct
9
runs
of
drilling
experiment.
Experimental
results
indicate
that
drilling
force
plays
an
important
role
in
determining
the
number
of
holes
drilled
and
wear
of
drill.
Taguchi
Method
is
then
applied
to
calculate
the
S/N
ratios
of
the
data
in
measuring
drill
hole
position
and
diameter.
As
a
result,
the
optimal
control
factor
combination
for
drill
hole
position
precision
is
A2B2C1D3,
i.e.
A2
with
rotational
speed
of
12,000
rpm,
B2
with
feed
rate
of
6,000
mm/min,
C1
with
drilling
mode
of
(a)
deep-hole
drilling
cycle,
G83,
and
D3
with
cutting
fluid
ratio
of
one
liter
of
cutting
fluid
and
30
liters
of
water.
On
the
other
hand,
the
optimal
combination
of
control
factors
for
accuracy
of
hole
diameter
is
A2B1C3D2,
i.e.
A2
with
rotational
speed
of
12,000
rpm,
B1
with
feed
rate
of
5,000
mm/min,
C3
with
drilling
mode
of
(c)
chip
breaking
drilling
cycle,
G73,
and
D2
with
cutting
fluid
ratio
of
one
liter
of
cutting
fluid
and
20
liters
of
water.
Two
more
experiments
using
the
drilling
parameters
A2B2C1D3
and
A2B1C3D2
are
conducted
and
the
results
indicate
that
such
two
combinations
of
control
factors
indeed
generate
a
better
performance
than
the
originally
designed
9
runs
of
drilling
experiment.
The
verifying
experiments
also
show
that
the
A2B1C3D2
combination
generates
better
results
than
the
A2B2C1D3
combination.
The
overall
comparison
reveals
that
A2B1C3D2
is
the
optimal
combination
of
working
parameters
for
drilling
holes
in
the
given
ICT
probe
plate
of
PCB.
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