珠海光宇电子科技有限公司
品质部 林奉斌
目前塑胶产品问题凸显，多次生产批量不合格产品，塑胶壳体尺寸方面的稳定性较差，例如中兴NO.2壳体，目前库存140K超宽产品。
为了充分了解注塑部的生产能力，针对现每一个在生产的机台做出能力值分析，以便于找出产生问题的真正原因，制定合理的标准参数、作业方式。
实验方法：采取单机台某时间段连续生产的产品各200PCS，由同一检验员用同一把卡尺，以相同的测量方法测量产品长度尺寸并作记录。根据记录值作直方图及正态分布曲线，计算出每台注塑机当前的设备能力及生产能力。
以下数据请塑胶产品行业专家们参考，并制定相应的措施。 试验结果见下表：电影伟大辩手
激活英文CP CPK CP CPK CP CPK 1#机亿利达120T 8月14日18:35~
20:35
P200底壳 1.460.77
2.05 1.35 2.93 2.232#机亿利达120T 8月14日18:48~20:20CL108
框架0.90-0.17
1.270.19 1.810.733#机亿利达120T 8月14日18:48~20:30C300
框架0.610.29
0.850.53 1.220.904#机住友130T 8月14日18:40~20:00夏新
NO.80.790.54
1.110.86 1.58 1.335#机柳州150T 8月15日9:40~10:40C2205
上盖 1.060.59
1.49 1.01
2.13 1.656#机柳州150T 8月15日1:40~2:50侨兴288
框架0.350.14
0.490.280.690.487#机柳州110T 8月15日4:00~5:10C2201
框架0.63-0.29
0.88-0.04 1.250.339#机柳州110T 8月15日2:00~4:00国虹A06
框架 1.000.91
1.40 1.31 1.99 1.9111#机柳州80T 8月15日18:10~19:08A10-C
框架0.790.46
1.110.77 1.58 1.2512#机
柳州80T
8月15日
18:07~19:10C170
上盖
0.890.34
1.25
0.70
1.79
1.24
机台参数生产型号
生产
时间段塑胶产品生产能力CPK分析报告
公差为±0.05mm 公差为±0.05mm
公差为±0.05mm
备注
注塑产品设备能力（CP）及制程能力（CPK）统计表
生产日期
公差为±0.05mm的CP、CPK值
西安新东方英语学校1.46
0.90
0.61
0.79
1.06
0.35
0.63
1.00
0.79
0.89
0.77
-0.17
0.29
0.54
0.59
0.14
-0.290.91
0.46
0.34
-
0.50
0.000.501.001.502.001#机
2#机3#机4#机5#机6#机7#机9#机11#机
12#机
CP
CPK 公差为±0.07mm的CP、CPK值
2.05
1.27
0.85
1.11
1.49
0.49
0.88
1.40
1.11
1.25
1.35
0.19
0.53
0.86
1.01
0.28
-
0.04 1.31
0.77
0.70
-0.50
0.000.501.001.502.002.50
1#机
2#机3#机4#机5#机6#机7#机9#机11#机
12#机
CP
CPK 公差为±0.10mm的CP、CPK值
2.93
existence
1.81
1.22
1.58
2.13
0.69
1.25
1.99
1.58
gwen1.79
2.23
0.73
0.90
1.33
1.65
0.48
0.33 1.91
1.25
1.24
0.00
1.00
2.00
3.00
4.001#机2#机3#机4#机5#机6#机7#机9#机11#机12#机
CP
CPK
日 期：2006.08.14生产时间段：18：35-20：35品 名：中兴P200底壳 机台号：1#机台参数：亿利达120T 样本数：
200
不良数：1不良率：0.50%尺寸上限：58.90尺寸下限：58.80最大值：58.92最小值：58.85平均值：58.874
标准差：Cp ： 1.46
U_Cpk ：0.77
L_Cpk ：
2.16Cpk ：0.77——————————————————————————————————————
————1234567
8910158.8658.8758.8858.8758.8858.8758.8858.8658.8858.87258.8758.8958.8958.8758.8858.8858.8858.8658.8758.87358.8658.8858.8858.8658.8858.8858.8658.8958.8858.88458.8658.8858.8758.8658.8958.8858.8758.8758.8858.86558.8858.8958.8858.8658.8758.8758.8758.8858.8858.87658.8958.8558.8758.8658.8758.8758.8958.8758.8658.87758.9258.8858.8658.8858.8858.8858.9058.8658.8658.86858.8758.9058.8658.8858.8858.8758.8758.8858.8758.86958.8758.8858.8758.8858.8858.8758.8658.8858.8758.861058.8658.8758.8758.8858.8758.8858.8758.8758.8758.851158.8558.8658.8758.8958.8858.8758.8758.8758.8658.881258.8758.8958.9058.9058.8958.8758.8758.8758.8858.881358.8758.8858.8858.9058.9058.8758.8858.8858.8658.861458.8858.8758.8758.8958.8658.8858.8658.8758.8958.871558.8858.8758.8658.8958.8858.8858.8658.8858.8958.881658.8758.8858.8758.9058.8858.8658.8558.8658.8858.861758.8758.8858.8858.8758.8958.8758.8658.8958.8658.891858.8858.8658.8758.8958.8858.8958.8858.8758.8658.881958.8758.8658.8658.8858.8858.8858.8658.8858.8558.8820
58.8858.8758.8758.8758.8658.8658.88
58.87
58.87
58.87
0.011458.94
58.92
58.90
58.88
58.86
58.84
58.82
58.80
USL
LSL
Process Capability Analysis for 中兴P200底壳长度尺寸
PPM Total
PPM > USL PPM < LSL
PPM Total
PPM > USL PPM < LSL
PPM Total
PPM > USL PPM < LSL
Ppk
PPL
PPU Pp
Cpm
Cpk CPL
ri的过去式CPU Cp
StDev (LT)
StDev (ST)Sample N Mean LSL Target USL 11076.54
11076.54 0.0011357.75
11357.75 0.00 5000.00
5000.00 0.000.76
2.150.761.46 *
0.772.160.771.460.0114305
0.011478420058.8738
58.8000 *58.9000Ex pected LT Performance
Ex pected ST Performance
Obrv ed Performance
Ov erall (LT) Capability
Potential (ST) Capability
Process Data
ST LT
日 期：2006.08.14生产时间段：18：35-20：35品 名：中兴P200底壳 机台号：1#机台参数：亿利达120T 样本数：
200
不良数：0不良率：0.00%尺寸上限：58.92尺寸下限：58.78最大值：58.92最小值：58.85平均值：58.874
标准差：Cp ： 2.05
U_Cpk ： 1.35
L_Cpk ：
2.75Cpk ： 1.35——————————————————————————————————————————1234567
8910158.8658.8758.8858.8758.8858.8758.8858.8658.8858.87258.8758.8958.8958.8758.8858.8858.8858.8658.8758.87358.8658.8858.8858.8658.8858.8858.8658.8958.8858.88458.8658.8858.8758.8658.8958.8858.8758.8758.8858.86558.8858.8958.8858.8658.8758.8758.8758.8858.8858.87658.8958.8558.8758.8658.8758.8758.8958.8758.8658.87758.9258.8858.8658.8858.8858.8858.9058.8658.8658.86858.8758.9058.8658.8858.8858.8758.8758.8858.8758.86958.8758.8858.8758.8858.8858.8758.8658.8858.8758.861058.8658.8758.8758.8858.8758.8858.8758.8758.8758.851158.8558.8658.8758.8958.8858.8758.8758.8758.8658.881258.8758.8958.9058.9058.8958.8758.8758.8758.8858.881358.8758.8858.8858.9058.9058.8758.8858.8858.8658.861458.8858.8758.8758.8958.8658.8858.8658.8758.8958.871558.8858.8758.8658.8958.8858.8858.8658.8858.8958.881658.8758.8858.8758.9058.8858.8658.8558.8658.8858.861758.8758.8858.8858.8758.8958.8758.8658.8958.8658.891858.8858.8658.8758.8958.8858.8958.8858.8758.8658.881958.8758.8658.8658.8858.8858.8858.8658.8858.8558.8820
58.8858.8758.8758.8758.8658.8658.88
58.87
58.87
58.87
0.011458.94
58.92
58.90
58.88
58.86
58.84
58.82
58.80
一对一数学辅导58.78
USL
广州形象设计学校LSL
Process Capability Analysis for 中兴P200底壳长度尺寸
PPM Total
PPM > USL PPM < LSL
PPM Total
PPM > USL PPM < LSL
PPM Total
PPM > USL PPM < LSL
Ppk
PPL
PPU Pp
Cpm
Cpk CPL
CPU Cp
StDev (LT)
StDev (ST)Sample N Mean LSL Target USL 27.02
27.02 0.0029.03
29.03 0.00 0.00
0.00 0.001.35
2.741.352.04 *
1.35
2.751.352.050.0114305
0.011478420058.8738
58.7800 *58.9200Ex pected LT Performance
Ex pected ST Performance
Obrv ed Performance
Ov erall (LT) Capability
Potential (ST) Capability
Process Data
ST LT
日 期：2006.08.14生产时间段：18：35-20：35品 名：中兴P200底壳 机台号：1#机台参数：亿利达120T 样本数：
200
不良数：0不良率：0.00%尺寸上限：58.95尺寸下限：58.75最大值：58.92最小值：58.85平均值：58.874标准差：Cp ：2.93
U_Cpk ：2.23
L_Cpk ：3.63
Cpk ：2.23
——————————————————————————————————————————12345678910158.8658.8758.8858.8758.8858.8758.8858.8658.8858.87258.8758.8958.8958.8758.8858.8858.8858.8658.8758.87358.8658.8858.8858.8658.8858.8858.8658.8958.8858.88458.8658.8858.8758.8658.8958.8858.8758.8758.8858.86558.8858.8958.8858.8658.8758.8758.8758.8858.8858.87658.8958.8558.8758.8658.8758.8758.8958.8758.8658.87758.9258.8858.8658.8858.8858.8858.9058.8658.8658.86858.8758.9058.8658.8858.8858.8758.8758.8858.8758.86958.8758.8858.8758.8858.8858.8758.8658.8858.8758.861058.8658.8758.8758.8858.8758.8858.8758.8758.8758.851158.8558.8658.8758.8958.8858.8758.8758.8758.8658.881258.8758.8958.9058.9058.8958.8758.8758.8758.8858.881358.8758.8858.8858.9058.9058.8758.8858.8858.8658.861458.8858.8758.8758.8958.8658.8858.8658.8758.8958.871558.8858.8758.8658.8958.8858.8858.8658.8858.8958.881658.8758.8858.8758.9058.8858.8658.8558.8658.8858.861758.8758.8858.8858.8758.8958.8758.8658.8958.8658.891858.8858.8658.8758.8958.8858.8958.8858.8758.8658.881958.8758.8658.8658.8858.8858.8858.8658.8858.8558.8820
58.8858.8758.8758.8758.8658.8658.8858.8758.8758.87
0.011458.95
58.90
58.85
58.80
58.75
USL
LSL
Process Capability Analysis for 中兴P200底壳长度尺寸
PPM Total
PPM > USL PPM < LSL
PPM Total
PPM > USL PPM < LSL
PPM Total
PPM > USL PPM < LSL
Ppk
PPL
PPU Pp
Cpm
Cpk CPL CPU Cp StDev (LT)
StDev (ST)Sample N Mean LSL Target USL 0.00
0.000.000.00
0.000.000.00
0.000.002.22
3.612.222.92 *
2.23
3.632.23
2.930.0114305
0.011478420058.8738
58.7500 *58.9500Ex pected LT Performance
Ex pected ST Performance
北京电脑培训学校
Obrv ed Performance
Ov erall (LT) Capability
Potential (ST) Capability
Process Data
ST LT
日 期：2006.08.14生产时间段：18：48-20：20品 名：CL108 机台号：2#机台参数：亿利达120T 样本数：
200
不良数：118不良率：59.00%尺寸上限：53.90尺寸下限：53.80最大值：53.98最小值：53.80平均值：53.909
标准差：Cp ：0.90
U_Cpk ：-0.17
L_Cpk ：
1.98Cpk ：-0.17
——————————————————————————————————————————1234567
8910153.9053.8953.9153.9153.8853.9253.8853.9053.9153.90253.9253.8853.9153.9553.9053.9053.9253.9353.9053.89353.8953.8953.8953.9453.9153.9253.9253.9053.9253.91453.8853.9053.9353.9053.9153.9153.9153.9053.9453.89553.9153.8953.9153.8953.9153.9253.9253.9053.9053.93653.9153.9153.8953.9053.9053.9353.9153.9153.9253.91753.9253.9353.9053.9153.9353.8953.9253.9053.9053.91853.9153.9153.9153.8953.9253.9453.9153.9053.9353.91953.9053.9053.9053.8853.9353.9053.9253.9153.9253.891053.9253.9253.9153.9353.9253.9253.9153.9153.8953.921153.9053.8953.9053.9153.9353.9153.9253.9153.9153.911253.9053.9053.9253.9153.9253.9253.9053.9253.9053.901353.9253.8953.9053.9053.9453.9053.8953.9453.9253.901453.9353.9253.9153.9153.9353.9453.9253.9053.9253.921553.8953.9053.8953.9153.9253.9053.9153.9353.8953.801653.9553.9353.8853.9253.9153.8953.8853.9053.9153.901753.8953.9053.9453.9353.9353.9253.9353.9053.9453.891853.9353.8953.9253.9253.9253.9153.9353.9353.9353.901953.9153.9053.9853.9053.9053.8453.9053.9353.9253.9320
0.0184深爱CL108框架长度尺寸CPK分析（公差0.1）
54.00
53.95
53.90
53.85
53.80
USL
LSL
Process Capability Analysis for 深爱CL108框架长度
PPM Total PPM > USL PPM < LSL PPM Total PPM > USL PPM < LSL PPM Total PPM > USL PPM < LSL Ppk PPL PPU Pp Cpm初中补习
Cpk CPL CPU Cp StDev (LT)StDev (ST)Sample N Mean LSL Target USL 694322.83
694322.83 0.00694535.08
694535.08 0.00590000.00590000.00 0.00-0.17
1.97-0.17 0.90 *
-0.17 1.97-0.17 0.900.0184988
0.018476820053.909453.8000 *53.9000Ex pected LT Performance
Ex pected ST Performance
Obrv ed Performance
Ov erall (LT) Capability
Potential (ST) Capability Process Data
ST LT
