In QS9000 3rd edition, it states like Ppk/Cpk >=1.33. Another one is in 6-Sigma. Ppk in 6-Sigma means Process Performance Index. It's a long term process capability covered the long term process variation and based on more product quantity. Generally, in 6-Sigma, the Ppk value is ...
什么是 CP 和 CPK CP(或 Cpk) 是英文 Process Capability index 缩写,汉语译作工序能力指数,也有译作工艺能力指数 , 过程能力指数。 工序能力指数,是指工序在一定时间里,处于控制状态 (稳定状态 )下的实际加工能力。它是工序固有的能力,或者说它是工序 保证质量的能力。 这里所指的工序,是指操作者、机器、原材...
Cpk:这是考虑到过程中心的能力(修正)指数,定义为CPU与CPL的最小值。它等于过程均值与最近的规范界限之间的差除以过程总分布宽度的一半。 Ppk:这是考虑到过程中心的性能(修正)指数,定义为:或的最小值。 其实,公式中的K是定义分布中心μ与公差中心M的偏离度,μ与M的偏离为ε=| M-μ|, 3、公式中标准差的不...
12、d to the variance of the process and how well the process is targeted. There are lots of misleadings in the use of the process capability ratios in the industries.CP 其次,你必须全面理解什么是CPK。 它是一个加工能力比率Cpk=minCpl,Cpu,其显示出该能力是目标中心并优于CP。因此,人们通常将...
Cp和Cpk介绍 Cp(戒Cpk)是英文ProcessCapabilityindex缩写,汉语译作工序能力指数,也有译作工艺能 力指数过程能力指数。 工序能力指数,是指工序在一定时间里,处于控制状态(稳定状态)下的实际加工能力。它是工序 固有的能力,戒者说它是工序保证质量的能力。 这里所指的工序,是指操作者、机器、原材料、工艺方法和生产环...
In QS9000 3rd edition, it states like Ppk/Cpk =1.33. Another one is in 6-Sigma. Ppk in 6-Sigma means Process Performance Index. Its a long term process capability covered the long term process variation and based on more product quantity. Generally, in 6-Sigma, the Ppk value is less ...
These are all related to the variance of the process and how well the process is targeted. There are lots of misleadings in the use of the process capability ratios in the industries.CP 其次,你必须全面理解什么是CPK。 它是一个加工能力比率Cpk=min{Cpl,Cpu},其显示出该能力是目标中心并优于CP...
These are all related to the variance of the process and how well the process is targeted. There are lots of misleadings in the use of the process capability ratios in the industries.CP其次,你必须全面理解什么是CPK。它是一个加工能力比率Cpk=min{Cpl,Cpu},其显示出该能力是目标中心并优于CP。
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In QS9000 3rd edition, it states like Ppk/Cpk >=1.33.Another one is in 6-Sigma. Ppk in 6-Sigma means Process Performance Index. It's a long term process capability covered the long term process variation and based on more product quantity. Generally, in 6-S 10、igma, the Ppk value ...