双面板多层板钻孔PFMEA分析范例

date
adopted
N
6
垫板不平整，使板面不在一水平面 上,局部无法钻透boards are not horizontal ,and lead to drill unthrough
2
来料抽检垫板的厚度均匀度 spotcheck the incoming backup thickness
用千分尺进行测量measure with micrometer
range
Automatically the machine examination breaks
knifeAutomatically the machine examination breaks
knifeAutomatically the machine examination breaks
knife
项目Item：
双面板/多层板doubleside/multi-layers PCB
类型Type:
PCB
过程责任 Responsibility：
核心小组core team：
钻孔drilling
Potential Failure Mode and Effect Analysis
过程潜在失效模式及后果分析
要求 requirement
潜在失 效模式 potential fal failure
严 重 度
级别 clas sifi cati
mode
effect S on
潜在失效起因/机理 potential failure cause/mechanism
频度 O
现行过程控制预防 current process control
5 60
无none
压脚粒已经设定固定高度，上
钻入板料的刃长不足,使板料的底
根据压胶粒机上标注的高度压胶粒 胶粒时自动限定高度Pressing
6
部未钻透drill facet length is unadequate and cant' drill
2
press rubber ring according to the feet grain has already the marked length in rubber fixedly and highly sets,
0.025mm
用点图对位和X-RAY全检底板 totally check the bottom board with red film and X-
ray
5
80
无none
8
钻带参数选用不当feed speed and rotation speed are not match with the material and layers of laminate
3
36
无none
through the bottom of boards
ring machine
last gum grain
automatically limit height.
钻咀深度已固定，钻机自动限
定深度Drilling the Ju depth
6
钻咀下咀最底点未超过底板bottom board isn't drilled through
频度 O
现行过程控制预防 current process control
method
探
现行过程控制探测
测R
current process detection 度 P
DN
每3个月检测及调整机台水平度
6
机台较低的部分使钻咀无法钻透底 板drilling table is low so that drill bit can't drill through the bottom board
在合格范围内Examine for
机台水平度调整在±0.02mm/m every 3 months and adjust
2 adjust machine levelness at ± the machine set level
6 72
0.02mm/m
degree in the qualified
scope
method
探
现行过程控制探测
测R
current process detection 度 P
DN
建议 措施 advice action
措施结果action result
责任及目标
完成日期
responsibi 采取的措
R
lity & due 施action S O D P
date
adopted
N
孔偏The bore is partial
2
24
建议 措施 advice action
措施结果action result
责任及目标
完成日期
responsibi 采取的措
R
lity & due 施action S O D P
date
adopted
N
无none
无none
孔损hole damage
6
扭力不足使钻咀无法克服阻力 torque force isn't enough and the drill bit can't overcome the resistance
2
使用点检表进行压力范围检查
磨板压力控制0.3±0.1mm Feed speed control 0.3±0.1mm
并记录Each use orders to check form to carry on 6
pressure scope to check and
72
record
无none
6
磨披锋机进料速度过快/过慢磨板 过度或打磨不到位over use of sand paper or unadequate milling
过程功能process function
要求 requirement
潜在失 效模式 potential failure
潜在失 效后果 potential failure
严 重 度
级别 clas sifi cati
mode
effect S on
潜在失效起因/机理 potential failure cause/mechanism
2
不同的产品/设计分别设定对应的 参数set special parameter for
special hole
用点图对位和X-RAY全检底板 totally check the bottom board with red film and X-
ray
5
80
无none
2/8
过程功能process function
2
使用点检表进行速度范围检查
根据磨刷轮 维修部 将速度锁
进料速度控制7±1m/min. Feed speed control 7±1M/min
并记录The use orders to check form to carry on speed scope to check and
平行度测试 maintenan 定为中 7 84 结果,进行 ce 值，员工 6
fahiolluere
潜在失 部效分后报废果或 p整otPeNnL报ti废al
fasiclraupre
严 重 度
级别 clas sifi cati
untmhordoeugh paerftfieacltly S on
or totally
潜在失效起因/机理 potential failure cause/mechanism
2
主轴每3个月测量调整扭力一次 measure the torque force of
spindle every 3 months
PQC用点图对位全检底板 PQC
inspect total backup with red film
5
60
后工序AVI与验孔机全检
无none
每班使用点检表进行是否更换
局部未压平使板材翘起有披锋
频度 O
现行过程控制预防 current process control
method
现行过程控制探测
探 测
R
current process detection 度 P
DN
建议 措施 advice action
措施结果action result
责任及目标
完成日期
responsibi 采取的措
R
lity & due 施action S O D P
压力脚Each use orders to
6
board partially can't be press flatly and cause board warpage
2
1.每天更换压力脚check the press foot every shift
check form to carry on whether replace pressure
磨刷轮水平 2019.11.3 无法修改
record
度调试。
0
2
2 24
8
销钉孔过大导致定位不牢而板移位
pin hole diameter is too big and can't fix well,which leads
2
to board shif
使用销钉钻咀Φ3.175±0.025mm Using pin drills of 3.175 +
unthrough partially
or totally
钻机生产前在指定文件调取钻
正补偿太多，钻咀刀尖部未钻透底
带；模块为唯一Adjust to
板too much positive
按WI给定的范围设定钻孔参数set take to drill to take in
compensation for drilling, and 2 drilling parameter according the appointed document 5 60 无none
机器自动检测断刀
6
长度不够/断刀未测出而未钻透The length is not enough/the knife is not measured and not drilled
2
长度检测功能打开.保证在± 0.15mm,超过则自动停机start drill bit length alarm to
ensure its length at ± 0.15mm,and alarm if excess the
to
孔损Bore Sun/断刀
Break knife
8
刀具磨次超要求，定位不准drill bit is re-shaped too much and leads to misalignment
按照WI和工卡数据发放相应磨次的 用点图对位和X-RAY全检底板
2
钻咀 issue the corresponding totally check the bottom resharped drill bit according board with red film and X-
bottom board isn't drilled
to WI
before drilling machine
through
production;The mold piece
is an unique
1/8
过程功能process function
要求 requirement
潜在失
效模式 po孔te未nt透ial
审批Approvalby：
1.如果客户有指定产品及过程特性符号，按客户要求标识；2.客户没有指定，则按如公司规定标识。产品特性符号表示: “◆”,过程特性符号表示:“▲”。classification symbol description ：1.mark symbol per customer's specific symbol;2.if no specific symbol from customer，mark symbol as below:“◆” for product special characteristic ,and “▲” for process spec
6 72
无none
,then leads to burrs
feet
6
磨披锋机压力过大/过小导致磨板 过度或打磨不到位Too much pressure or too much pressure on the grinding front lead to excessive grinding or grinding.
2
按下钻垫板0.8-1.5mm设置set has been already fixed and
0.8-1.5mm drilling for backup
drill machine to
3
36
无none
automatically limit depth
孔未透
部分报废或 整PNL报废
6
hole
scrap
（PFMEA）
FMEA编号FMEA No.：
关键日期 Key Date：
FMEA-Dr-01 /
编制日期 Pepare date：
内容版本 content Version：
修订日期 Modify Date：2019/12/24
工厂批准plant approval ：
2015/4/20 B5
编制 Prepareby：