根据给出的数据，计算cp，cpk和pp，ppk，并判断过程能力是否可接收
推荐回答（1个）
CPK：Complex Process Capability index 缩写现代企业用于表示制能力指标
CPK值越表示品质越佳
CPK=min（（X-LSL/3s）（USL-X/3s））
Cpk——程能力指数
CPK= Min[ (USL- Mu)/3s, (Mu - LSL)/3s]
Cpk应用讲议
1. Cpk文定义：制程能力指数某工程或制程水准量化反应工程评估类指标
2. 同Cpk息息相关两参数：Ca , Cp.
Ca: 制程准确度 Cp: 制程精密度
3. Cpk, Ca, Cp三者关系： Cpk = Cp * ( 1 - ｜Ca｜)CpkCa及Cp两者反应Ca反应位置关系(集趋势)Cp反应散布关系(离散趋势)
4. 选择制程站别用Cpk作管控应本做考量首要素其品质特性制程影响度
5. 计算取数据至少应20~25组数据具定代表性
6. 计算Cpk除收集取数据外应知晓该品质特性规格限(USLLSL)才顺利计算其值
7. 首先用ExcelSTDEV函数自计算所取数据标准差(σ)再计算规格公差(T)及规格值(u). 规格公差＝规格限－规格限；规格值＝（规格限+规格限）/2；
8. 依据公式： 计算制程准确度：Ca值
9. 依据公式：Cp = 计算制程精密度：Cp值
10. 依据公式：Cpk=Cp 计算制程能力指数：Cpk值
11. Cpk评级标准：（据标准计算制程能力指数做相应策）
A++级 Cpk≥2.0 特优 考虑本降低
A+ 级 2.0 ＞ Cpk ≥ 1.67 优 应保持
A 级 1.67 ＞ Cpk ≥ 1.33 良 能力良状态稳定应尽力提升A＋级
B 级 1.33 ＞ Cpk ≥ 1.0 般 状态般制程素稍变异即产良危险应利用各种资源及其提升 A级
C 级 1.0 ＞ Cpk ≥ 0.67 差 制程良较必须提升其能力
D 级 0.67 ＞ Cpk 接受 其能力太差应考虑重新整改设计制程
1、首先我先说明Pp、Cp两者定义及公式
Cp（Capability Indies of Process）：稳定程能力指数定义容差宽度除程能力考虑程偏移般表达式：
Pp（Performance Indies of Process）：程性能指数定义考虑程偏移容差范围除程性能般表达式：
（该指数仅用与Cp及Cpk比或/Cp、Cpk起度量确认段间内改进优先序）
CPU：稳定程限能力指数定义容差范围限除实际程布宽度限般表达式：
CPL：稳定程限能力指数定义容差范围限除实际程布宽度限般表达式：
2、现我阐述Cpk、Ppk含义
Cpk：考虑程能力（修）指数定义CPU与CPL值等于程均值与近规范界限间差除程总布宽度半即：
Ppk：考虑程性能（修）指数定义： 或 值即：
其实公式K定义布μ与公差M偏离度μ与M偏离ε=| M-μ|
3、公式标准差同含义
①Cp、Cpk计算稳定程能力稳定程程变差仅由普通原引起公式标准差通控制图本平均极差估计
Cp、Cpk般与控制图起使用首先利用控制图判断程否受控程受控要采取措施改善程使程处于受控状态确保程受控再计算Cp、Cpk
②由于普通特殊两种原所造变差用本标准差S估计程性能指数计算使用该标准差
4、几指数比较与说明
① 偏离Cp表示程加工均匀性（稳定性）即质量能力Cp越质量特性布越苗条质量能力越强；偏离Cpk表示程μ与公差M偏离情况Cpk越二者偏离越即程公差越瞄准使程质量能力与管理能力二者综合结Cp与Cpk着重点同需要同加考虑
② PpPpk关系参照面
③ 关于Cpk与Ppk关系引用QS9000PPAP手册句：能历史数据或足够初始数据绘制控制图（至少100体本）程稳定计算Cpk于输满足规格要求且呈预测图形期稳定程应该使用Ppk
所谓PPK进入批量产前批产能力评价般要求≥1.67；CPK进入批量产保证批量产产品品质状况至于降且保证与批产具同控制能力所进行产能力评价般要求≥1.33；般说CPK需要借助PPK控制界限作控制… …
PPK短期程能力即初始程能力般初期确认程否稳定于1.67即转入期程能力管理CPK至于CMK计算与PPK前提模具与设备作整体即必须使用合格模具排除设备外素影响..
知道能能明白两都关系与区别呢
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