SPT 劈刀设计ppt课件

BasicCapillaryDesignRules（劈刀基本设计规则）,TheFreeAirBallFABiscenteredinsidethecapillarychamfer.（金球被真空吸入劈刀内切角处）,BondingSequence（焊线顺序）Cycle1（第一步）:,BallBondFormation（球形形成）,BondingSequence（焊线顺序）Cycle2（第二步）:,Afterloopingformation,cycleperformsstitchbondprofile.（弧度形成后，焊接第二焊点）,BondingSequence（焊线顺序）Cycle3（第三步）:,TailFormation（尾丝形成）,BondingSequence（焊线顺序）Cycle4（第四步）:,Detachtailfromthestitch.（从第二焊点处拉断尾丝）,BondingSequence（焊线顺序）Cycle5（第五步）:,FreeAirBallFABFormation（打火烧球形成金球）,BondingSequence（焊线顺序）Cycle6（第六步）:,CapillaryTravelPathFormingaTypicalLoopProfile（劈刀行程路线形成弧度形状）,LoopingFormation（弧度形成）:,Capillarydimensionsaffectstheballbondformation（影响第一焊点的劈刀尺寸参数）:,T,FA,H,CD,OR,1stBond(Ball)（变形后的金球）,CA,HoleSize(H)（孔径）,H,WD,H（孔径）=WD（线径）+40%10%Recommended（推荐）:H=1.4WDForFinePitch（小间距）:H=1.3WD(min),ChamferDiameter(CD)（内切角直径）:,CDMBD（变形后的金球直径）/1.2(BPO铝垫开窗-*10m)/1.2H孔径+10m,*10mclearanceincludesmachine/operatorerror,capillarytolerance（10m包含设备/操作者的误差，劈刀尺寸的公差）,CD,MBD,ChamferAngle(CA)内切角角度:,CD,MBD,MBD,CD,CA(70),CA(120),Bigger（大）CA-BiggerMBD,*Withthesame（相同）CD,H,FAB&WD,Smaller（小）CA-SmallerMBD,InnerChamferICFunction（内切角的作用）,FABCentering（金球定中心）,ResultantfromUSTransfer（与超声波传递的界面）,T,FA,OR,Capillarydimensionsaffectsthestitchbondformation（影响第二焊点的劈刀尺寸参数）:,2ndBond(Stitch),StitchLengthformedbyT,CDandOR（鱼尾长度由T,CDandOR形成）,WD,OR,SL,T,OR-FACombination（结合）:,Smaller（小）FABigger（大）OR,OR,OR,FA,FA,Bigger（大）FASmaller（小）OR,StitchProfilebasedonOutsideRadius(OR)（第二焊点形状基于外切角半径）：,Reducedweld(stitch)lengthforbigOR（大OR减少鱼尾长度）,WD,OR,OR,MaximumComputedOR（最大的计算OR）,OR(max)=(T-CD)/2cos(TA/2)/cos(TA/2+FA)tan(90+TA/2+FA)/2,OR(max),(T-CD)/2,TA/2,FA,ORbasedon（基于）TipDiameter(T):,OR,FA,WD,TOR,360m330-300m250-200m180-165m150-130m120-110m100-75m70m,T,=75m=64m=51m=38m=30m=20m=12m=10m,CDTermination（终止）oftheStitch(鱼尾）:,FirstBond(BallFormation):第一焊点形成,FreeAirBall,MashedBall,FreeAirBall空气球=MashedBall变形球:,FreeAirBall,MashedBallDiameter,FAB,MBD,Vol体积FAB=Vol体积MBD,VolFAB,VolMB,FreeAirBall空气球=MashedBall变形球（体积）,FAB,VolFAB=VolMB,CD,CA,H,MBD,1,2,3,VOL2,VOL3,+,+,VOLFAB,=,VOL1=3H2(H-WD)/16,VOL1,VOL2=(CD3-H3)/24tan(0.5CA),VOL3=MBD2(MBH)/4,MBH,WD,VOLFAB=FAB3/6,+,+,=,FAB=MBVolumeEquation综合:,VolFAB=VolMB,FAB3/6=3H2(H-WD)/16+(CD3-H3)/24tan(0.5CA)+MBD2(MBH)/4,=,FAB3=18H2(H-WD)/16+(CD3-H3)/4tan(0.5CA)+3MBD2(MBH)/2,Critical（临界）LoopHeight(CLH):,CLH,BNA,HighReverseLoop,NormalLoop,TipDiameter(T):,T,T(max)=2BPP-WD-(2LH-WD)tan(TA/2)-24,BPP,WD,LH,TA(MTAorBNA),TipDiameter(T):,T,TCD+2OR,BPP,WD,LH,TA(MTAorBNA),OR,TipDiameter(T):,TA/2,WD+clearance(e),T/2,a,b,BPP,LH-MBH,T/2=BPP-a-b,T(max)=2BPP-(WD+e)cos(TA/2)-2LH-2MBH-W