research on printed circuit board mechanical...
TRANSCRIPT
Research on Printed Circuit Board Mechanical Drilling
Journal of the HKPCA / 2016 / Spring / Issue No. 59
Technical Paper14
PCB
PCB
,
250 krpm
Abstract
Key words:
This paper introduced the research progress on PCB micro-
holes mechanical drilling from Laboratory of PCB precision machining of
Guangdong University of Technology. The drilling process, drilling force,
drilling temperature and holes quality of PCB drilling were studied. The
characteristics and mechanism of drill wear and broken were analyzed.
The dynamic performance of the drilling machine was also analyzed and
the designation rule of PCB high speed numerical control drilling machine
was proposed. An PCB high speed numerical control drilling machine with
250 krpm highest spindle speed was designed and manufactured.
PCB, micro-holes, mechanical drilling
[1 ,2 ]
PCB
0.1mm
0.1mm
PCB
0.05mm - 0.1mm
PCB
PCB
PCB
1 PCB
1.1
Deform AdvantEdge FEM
FR-4 25 m 18 m
1
[3 ,4 ]
1 FR-4 (D = 0.1mm f = 0.006mm/r n = 50krpmv = 2000cm/min recorded rate 5000fps)r
[3, 4]
2 FR-4 (D = 0.1mm f = 0.006mm/r n = 50krpmv = 2000cm/min recorded rate 5000fps)r
[3, 4]
www.hkpca.org
Technical Paper 15
2
3
0.54N
0.1mm
4
1.2
[3 ,5 ]
3[3] 4 0.1mm FR-4
(D = 0.1mm v = 120cm/min n = 200krpm v = 2000cm/minC R )
f r[3]
5 FR-4(a) D=0.1mm v =120cm/min n=200krpm v =2000cm/min(b) 5mm FN=5N 0.4krpm
f r[3]
6 FR-4[3]
80 C
5
O [3 ]
Journal of the HKPCA / 2016 / Spring / Issue No. 59
Technical Paper16
7 FR-4(a) D = 0.1mm v = 150cm/min n = 295krpm v = 2300cm/min 2500(b) D = 0.2mm v =150cm/min n = 155krpm v = 1800cm/min 1500(c) D = 0.3mm v = 240cm/min n = 145krpm v = 1800cm/min 1500
[3, 6]
f r
f r
f r
(
6)
( 7)
[3, 6-9]
8[10]
9[10]
10[10]
11[10]
12[10]
13[10]
[1 0 ]
( 8 13)
www.hkpca.org
Technical Paper 17
1.3
( 14 16)
(CPK
)
[3 ,4 ]
14 FR-4 (a) (b) (c)(d) D = 0.1mm v = 2000cm/min (a) v = 30cm/min n = 50krpm(b) v = 90cm/min n = 150krpm (c) v =150cm/min n = 295krpm(d) D = 0.1mm v = 160cm/min n = 200krpm
[3]
r f
f f
f
15 FR-4 (a) (b) (c)(a) D = 0.1mm f = 0.005mm/r n = 295krpm v = 2300cm/min(a: copper foil thickness; b: nail head thickness) (b) (c) D = 0.1mmf = 0.006mm/r n = 295krpm v = 2300cm/min
[4]
r
r
16 FR-4 (D = 0.1mm f = 0.005 n = 295krpm v = 2300cm/min)[4]
r
2
[1 0 ]
Journal of the HKPCA / 2016 / Spring / Issue No. 59
Technical Paper18
Tg
PCB
PCB
PCB
X Y Z
250krpm
[1 1 -1 5 ]
[1 6 -2 3 ]
3
( 1)
( 2)
( 2)
( 2)
( 2)
[2 4 -2 8 ]
5
1
2
4
1 FR-4[3]
2 FR-4[3]
www.hkpca.org
Technical Paper 19
(PI)
PI
PI
(a) 20 m (b) 40 m (c) 60 m
(d) 80 m (e) 100 m (f) 120 m
(g) 140 m (h) 160 m (i) 180 m
17 (D = 0.25mm, v = 50cm/min n = 140krpm SF305 101820DR )[27]
f
0 ms 9.3 ms 9.8 ms 96.3 ms 99.1 ms
Journal of the HKPCA / 2016 / Spring / Issue No. 59
Technical Paper20
18(D = 0.3mm v = 50cm/min n = 14okrpm SF305 101820DR 0.5mm)
[24, 27]
f
19(D = 0.3mm v = 250cm/min n = 140krpm SF305 101820DR 0.5mm)
[24, 27]
f
www.hkpca.org
Technical Paper 21
PI
PI
20(D = 0.3mm n = 160krpm v = 50cm/min SF305-101820DR
LC-110)
[24]
f
10 100 500
21(D = 0.3mm n = 180krpm v = 200cm/min v = 1800cm/min SF305-101820DR )
[24, 27]
f r
Journal of the HKPCA / 2016 / Spring / Issue No. 59
Technical Paper22
(a) (b)
22(D = 0.25mm n = 158k rpm v =300mm/s SF305-103520DR 0.5mm LC-110)
[24, 28]
r
6 IC
IC
IC
-
IC
IC
MVC IC
IC
IC
[2 9 ,3 0 ]
23 IC (a) (b) 1000 (c) 2000 (d) 3000 (e) 4000 .(D = 0.15 mm n = 158K rpm v = 15mm/s, v = 300 mm/s.)f r
[29, 30]
www.hkpca.org
Technical Paper 23
24 IC (a) ; (b)2000 ; (c)3000 ; (d)4000(D = 0.15mm n = 158K rpm v =15mm/s v = 300mm/s).f r
[29, 30]
7
[2 9 ]
/
/
/
/
/ /
/
/
/
/
/
/
/
0.1 mm
IC
PCB
PCB - -
PCB
[1]
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8
Journal of the HKPCA / 2016 / Spring / Issue No. 59
Technical Paper24
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www.hkpca.org
Technical Paper 25
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