经典六西格玛(6 sigma)培训内部资料M_02_Capa

1、 M 02-1 M 02-2 M 02-3 M 02-4 M 02-5 M 02-6 M 02-7 M 02-8 M 02-9 M 02-10Qualitative Y (attribute data Y的定性分析（计数型数据） Capability determination for an attribute output: Qualitative Y (attribute data Y的定性分析（计数型数据） 对计数型输出的能力确定： Tally Defect Data 缺陷数据确认 Compute PPM 计算PPM Step 2(步骤2: Compute the proportion

2、of defects and the PPM 计算缺陷的比例和PPM Step 1: Verify the definition / description of a defect 验证缺陷的定义/描述 Count the occurrence of defects (and track the total units processed. Historical data is typically used here and usually considered to be longterm. 步骤1: 计算缺陷数量(并计算总产量。 通常可以使用历史数据并当作长期来考 虑。 62 Step 3

3、(步骤3: 4 Compute the Z-score and shift by 1.5 if appropriate 计算Z值，适用时偏移1.5 Compute Z-score 计算Z值 Step 4(步骤4: 5 Estimate traditional capability indices 估计能力指标 Change from Z to Cp, Cpk, Pp, Ppk 将Z转化成Cp, Cpk, Pp, Ppk Introduction to Six Sigma Compute Cpk, Ppk 计算Cpk, Ppk Introduction to Six Sigma 61 Quali

4、tative Y (attribute data Y的定性分析（计数型数据） ParetoC by P hart roduct Tally Defect Data 缺陷数据确认 Scrapped Units 100 6000 5000 4000 3000 2000 1000 0 20 0 80 60 40 Calculate PPM 计算PPM Calculate Z-score 计算Z值 Calculate Cpk, Ppk 计算Cpk, Ppk Exercise: Using the Pareto chart given below, calculate the capability of

5、 the Intrepid product to be shipped defect free: 练习：用下面的Pareto图，计算 Intrepid交付无缺陷产品的能力 id rt s rs rep Isuzu sco Lexu the E O Int Total Units: 35000 5000 60000 15000 20000 Introduction to Six Sigma 64 Introduction to Six Sigma 63 Steps 1 :Tally Defect Data 步骤1:缺陷数据计数 Steps 2 :Calculate PPM 步骤2:计算PPM S

6、tep 2(步骤2: ParetoC by Product hart 100 6000 Step 1(步骤1: Scrapped Units Assume:Opportunity equals 1 per unit 假设:每个产品有一个缺陷机会 Intrepid defect count: 4000 Intrepid total units produced: 35000 Intrepid产品缺陷数量:4000 Intrepid产品总产量:35000 Percent Verify the definition / description of a defect. 验证缺陷的定义/描述。 500

7、0 4000 3000 2000 1000 0 80 60 40 20 0 : Count the occurrence of defects (and track the total units processed. Historical data is typically used here which is usually considered to be long-term. 计算缺陷数量(并计算总产量，通常可以使用历史 数据并当作长期来考虑。 : Calculate the proportion of defects and the PPM 计算缺陷比例和PPM id rt s rs

8、 rep Isuzu sco Lexu the E O Int Total Units: 35000 5000 60000 15000 20000 Proportion of defects = 0.1143 PPM = 0.1143 * 1,000,000 = 114,300 PPM 缺陷比例=0.11473 PPM = 0.1143 * 1,000,000 = 114,300 PPM Introduction to Six Sigma 65 66 Introduction to Six Sigma M 02-11 Percent Steps 3 Calculate Z-score 步骤3:

9、计算Z值 Steps 3 Calculate Z-score 步骤3:计算Z值 Step 3(步骤3: : Calculate the Z-score and shift by 1.5 if appropriate 计算Z值，适用时偏移1.5 At a defect rate of 11.43 %, ZLT = 1.204 在缺陷率为11.43 %时, ZLT = 1.204 Tally Defect Data 不合格点数 Calculate PPM 计算PPM Calculate Z-score 计算Z值 Can you verify this via Minitab Probability

10、 Functions, Excel Functions, or Z-Table Lookup ? 你能通过Minitab概率功能，EXCEL功能或查 Z表验证吗？ Also, ZST = 1.5 + ZLT = 1.204 + 1.5 = 2.704 同时，ZST = 1.5 + ZLT = 1.204 + 1.5 = 2.704 Calculate Cpk, Ppk 计算Cpk, Ppk Introduction to Six Sigma 67 68 Introduction to Six Sigma Steps 4 Calculate Cpk, Ppk 步骤4:计算Cpk、Ppk Calc

11、ulating Defect Levels 计算缺陷水平 Calculate Defects per Unit (DPU: 计算每单位缺陷（DPU）: DPU = Total Defects DPU = Total Units Produced 缺陷总数 生产的总数 Step 4（步骤4）: Estimate traditional capability indices 估计能力指标 Change from Z to Cpk & Ppk 将Z转换成Cpk & Ppk Cpk = ZST / 3 = 0.9013 Ppk = ZLT / 3 = 0.4013 Calculate Defects per Million Opportunities (DPMO: 计算每百万机会