PCB钻头及钻孔相关知识

1、2005年9月13日我司钻头材料的特点：我司钻头材料的特点：直径1.6mm： 钻头本体 与把柄采用整体式，本体与把柄材料均为碳化钨。0.40.8mmUC型的设计优势 ST/STX的设计优势 高质量的钻孔品质，低的钻孔温度，低的钉头、胶渣、折断率现象。操作简单，直径控制容易，较多的研磨次数 低的折损率，减少了钻孔扭矩阻力。 较大的使用范围，使用于一般用途 利于微钻和6层以上的PCB板。 利于一般直径钻头和双面板及6层以下多面板。 Amount of Re-point（0.06mm0.1mm/次）刃带至少剩余0.2mm 以上0255075100010002000300040005000Number

2、 of Hits(Drilling Temp - Room Temp)STUCCONDITIONSPWB:FR-4 (L) t1.6mm x 3sDrill:ST30 0.4x6.5UC30 0.4x6.5N:70kRPMF:2.1m/minE/B:0.15 AluminumB/B:1.5mm Paper phenolNumber of Hits: 5,000Drilling Machine: Hitachi ND-2D14全长本体长沟长把柄直径Under cue 直径直径钻尖角间隙钻芯厚度螺旋角刃带长刃带宽第一面角第二面角0.07mm0.11mmDrill Type： ：UCf f0.3 x

3、 5Web Taper： ：0.028 /mmFlute Land Ratio： ：2.2Helix Angle： ：38孔位精度悪化、切粉排出良好孔位精度良好、切粉排出悪化Drill Type： ：STf f0.3 x 5Web Thickness： ：0.1mmFlute Land Ratio： ：2.0Helix Angle： ：40Web Taper = 0.010/mmWeb Taper = 0.030/mm孔位精度悪化、切粉排出良好孔位精度良好、切粉排出悪化Drill Type： ：UCf f0.3 x 5Web Thickness： ：0.11mmWeb Taper : 0.02

4、8 /mmHelix Angle： ：35F / L Ratio = 1.5F / L Ratio = 2.5LANDLAND孔位精度良好、切粉排出悪化孔位精度悪化、切粉排出良好Drill Type： ：UCf f0.3 x 5Web Thickness： ：0.11mmWeb Taper:0.028 /mmFlute Land Ratio:2.2Helix Angle = 30Helix Angle = 40切粉排出悪化切粉排出良好NFRTR0.100.150.200.250.300.35DS636,000424,000318,000255,000212,000182,000MLB573,0

5、00382,000286,000229,000191,000164,000（ff）0.350.300.250.200.150.10 100 200 300 400 500 600 700 800 (kRPM)限界krpm限界krpm-Quality Level-80k 120k 160k 200kHole LocationGetting betterHole RoughnessStableNail HeadingStableSmearingDecreaseDrill wearingLess wearingEvaluationHole Accuracy15202530354045505575k1

6、00k(47)120k(57)140k(66)160k(75)180k(85)Spindle Speed (rpm)（ （Velocity（ （m/min）Hole Accuracy ( m)Ave.+3 Drill Bit: MD35 0.15x2.5CONDITIONSPWB:FR-4(DS) 0.6mm x 2sChipload: 15 m/rev.E/B:0.15mm AluminumB/B:1.5mm Paper phenolNumber of Hits: 3,000Number of Samples: 202040608010075k120k160k180k (RPM)(%) Co

7、ndition Drill Dia:f f0.4mm Chipload: 25 m/rev. Fixed No. of hits:3,000 Hit Method:Randomized100% (2481sec)32% Time Reduction68% (1696sec)HoleRegistrationAccuracy02040608010063m/min126m/min188m/min251m/min314m/min主軸runout：（20krpm160krpm）之後因鑽針崩角嚴重、加工中斷DRILL： 1.08.0PWB：FR-4 （Double Side） t1.63 E/B：AL t

8、0.2 B/B：Paper Clad t1.5 Parameters：N=20160krpm =40m/rev Constant Number ofhits：2,000hits n=3（轉速）高（轉速）低斷針（轉速）（周速）20 krpm 40krpm 60 krpm 80krpm 100 krpm63m/min 126m/min 188m/min 251m/min 314m/min适当转速的选定：不能太高或太低Hole Registration Accuracy020406080100120Hole Registration Accuracy（）AVEAVEAVE： .3支中斷2支12.5m

9、/rev1.25m/min17.5m/rev1.75m/min22.5m/rev2.25m/min（chipload）大（chipload）小 PWB：BT （Double Side） t0.213 E/B：AL t0.15 B/B：Paper Clad t1.5 Parameters：N=100krpmConstant F=1.75m/minf=17.5m/rev Number of hits：3,000 n=3适当进刀的选定： 不能太大或太小Hole Wall Roughness051015202512.517.522.5Hole Wall Roughness（）： . PWB：BT （D

10、ouble Side） t0.2x13s E/B：AL t0.15 B/B：Paper Clad t1.5 Parameters：N=100krpm Constant Number of hits：3,000hits n=10 （ Measuring 5 holes on nearby 3,000hits）12.5m/rev1.25m/min17.5m/rev1.75m/min22.5m/rev2.25m/min（chipload）大（chipload）小（）（F） - AVE1 7 13 1 7 13 1 7 13(Panel from the Top)Hole Registration A

11、ccuracy0204060801001201-10001001-20002001-3000Number of hitsDRILL： .PWB：FR-4 (4Layers) t1.6x3sE/B：AL t0.15B/B：Paper Clad t1.5Parameters：N=75krpm F=0.75m/minf=10m/revNumber of hits：3,000hitsn=3 AVE+3s-AVE+3s AVEHoleRegistrationAccuracy（m）适当进刀的选定：不能太大磨耗量: 钻头磨耗与PCB层数的关系DRILL DIA fDL2BOTTOM PCBBACKERL1P

12、OINT ANGLE aD0.100.200.300.400.500.60L10.30.30.30.30.30.3L20.0230.0470.0700.0930.1160.140DEPTH(mm) 0.3230.3470.3700.3930.4160.440（先端角為130）UNION TOOL CO. TECHNICAL RESEARCHUNION TOOL CO. TECHNICAL RESEARCHUNION TOOL CO. TECHNICAL RESEARCHUNION TOOL CO. TECHNICAL RESEARCHDrill Type： ：UCf f0.3 x 5Web T

13、hickness： ：0.11mmWeb Taper:0.028 /mmFlute Land Ratio:2.2Helix Angle = 30 Helix Angle = 40UNION TOOL CO. TECHNICAL RESEARCHUNION TOOL CO. TECHNICAL RESEARCHUNION TOOL CO. TECHNICAL RESEARCHST typeUNION TOOL CO. TECHNICAL RESEARCHUC typeUNION TOOL CO. TECHNICAL RESEARCH02000400060008000100001200014000

14、1600018000200001TOOL LIFE (HITS)CONVENTIONALNEW NE30 SERIESCONDITIONSPWB:BT RESIN (DS) 0.4mm x 3sDrill:0.15x2.5N:160kRPMF:4.8m/minE/B:LE400B/B:1.5mm Paper phenolNumber of Hits: 3,000Drilling Machine: Hitachi ND-1W212Quality LimitUNION TOOL CO. TECHNICAL RESEARCHCONDITIONSPWB:FR-4 (8L) 0.8mm x 2sDril

15、l:NH20 0.3x5N:80kRPMF:1.8m/min E/B:LE400B/B:1.5mm Paper phenolNumber of Hits: 3,0000.50.5aveave穴位置量Hole positioning accuracy穴位置量Hole positioning accuracy従来材従来材ConventionalConventional10%Improved10%Improvedz穴位置量（m）穴位置量（m） Hole positioning accuracy AVE.+3s Hole positioning accuracy AVE.+3sNH20材NH20材0.

16、00.01.01.02.02.03.03.04.04.05.05.06.06.07.07.08.08.09.09.010.010.00.150.150.250.250.350.350.450.450.60.6先端 距離( m m )先端 距離( m m )Distance from drill topDistance from drill topNH20材NH20材従来材従来材ConventionalConventional25%Reduction25%Reduction径減量（ m ）径減量（ m ）Diameter wearing amountDiameter wearing amount

17、UNION TOOL CO. TECHNICAL RESEARCH人HANDLING基板材料機械鑽頭鑽頭作業環境綜合的改善bImpact on Registration AccuracyChisel pointinconcentricityHeavyOverlapMediumGapMediumImpact on Registration AccuracyPrimary flairLightNegativeLight010203040506070809010011012001020304050Chisel point inconcentricity ( m)Hole registration a

18、ccuracy ( m)Bottom-BackTop-FrontMAXAVE+3sMAXAVE+3sChisel point inconcentricityDRILL: UC 0.3 x 5 mmPWB: FR-4 4Layers t1.6 x 2sEB: Al t0.15 B/B：Bakelite t1.5 mmN: 80 krpm (V: 75.4m/min)F: 2.0 m/min (f: 25 m/rev) Hit count: 3000 hitsImagination of Chisel point inconcentricity010203040506070809010011012

19、001020304050Imagination of OverlapMAXAVE+3sMAXAVE+3sBottom-BackTop-FrontOverlapDRILL: UC 0.3 x 5 mmPWB: FR-4 4Layers t1.6 x 2sEB: Al t0.15 B/B：Bakelite t1.5 mmN: 80 krpm (V: 75.4m/min)F: 2.0 m/min (f: 25 m/rev) Hit count: 3000 hitsOverlap ( m)Hole registration accuracy ( m)01020304050607080901001101

20、2001020304050Bottom-BackTop-FrontMAXAVE+3sMAXAVE+3sGapDRILL: UC 0.3 x 5 mmPWB: FR-4 4Layers t1.6 x 2sEB: Al t0.15 B/B：Bakelite t1.5 mmN: 80 krpm (V: 75.4m/min)F: 2.0 m/min (f: 25 m/rev) Hit count: 3000 hitsGap ( m)Hole registration accuracy ( m)Imagination of Gap010203040506070809010011012001020304050Bottom-BackTop-FrontMA