工序能力講義(文件)
【正文】 not be used to determine the % of out of spec. 27 Cpu o r Cpl % Not M e e t i ng St a nd a r d Cpu o r Cpl % Not M e e t i ng St a nd a r d Cpu o r Cpl % Not M e e t i ng St a nd a r d 0 3 6 9 2 16 .85 9 5 5 6 1 17 .62 8 6 4 4 0 18 .4 1 7 8 3 4 9 19 .22 6 0 2 4 8 20 .05 5 2 1 6 7 20 .90 4 4 0 9 6 21 .77 3 6 9 4 5 22 .66 2 9 8 9 4 23 .58 1 2 7 6 3 24 .51 0 5 6 5 2 25 .46 9 8 5 5 1 26 .43 8 1 4 6 0 27 .43 7 5 3 9 9 28 .43 6 9 2 4 8 29 .46 5 4 1 0 7 30 .50 4 9 0 8 6 31 .56 3 4 9 8 5 32 .64 2 9 8 9 4 33 .72 1 5 7 3 3 34 .83 0 2 6 8 2 35 .94 9 9 5 5 1 37 .07 8 6 4 4 0 38 .21 7 4 3 5 9 39 .36 6 3 2 10 .38 8 40 .52 5 2 1 10 .93 7 41 .68 4 2 0 11 .51 6 42 .86 3 3 9 12 .10 5 44 .04 2 4 8 12 .71 4 45 .22 1 6 7 13 .35 3 46 .41 0 9 6 14 .01 2 47 .61 9 2 5 14 .69 1 48 .80 8 7 4 15 .39 0 50 .00 7 2 3 16 .11 Calculate Cpu and Cpl. If either are less than zero, use this table to determine the % out of spec. If both are less than zero, add the results together to determine the total % out of spec. 28 Cpk 練習(xí)題 Exercise ? A manufactured part has the following length specs: USL = inches, LSL = inches. ? The process is in control with an average of inches and a standard deviation of .0015 inches. ? What is the value of Cpk的值等于多少呢 ? Is any material being produced out of specifications? 如果是的話，值為多少呢 If so, how much? ???? 3 XU S LCpu???? 3 L S LXCpl% of parts not meeting the standard = Cpk = Minimum (Cpu, Cpl)= 29 Cpk 練習(xí)題 Exercise ? 廠商定于回復(fù)客戶投訴最多需要 10天。平均數(shù)是 %,標(biāo)準(zhǔn)偏差為 。 For attributes data, the average on the control chart is the process capability. The process must be in statistical control. ? 對于可變數(shù)據(jù)來說，工序能力并不能被確定，除非程序受統(tǒng)計控制和個別測量法處于正態(tài)分布。在下面記錄你的答案。 Cpk values are the appropriate measure of process capability for variables data. 33 應(yīng)用 Applications ? 想一想我們在工作中的程序。機(jī)械工廠能否符合規(guī)格？多少百分比的周不符合規(guī)格？ A machine shop is monitoring % productivity on a weekly basis using an individuals chart. The individuals chart is in control. The average is % with a standard deviation of . The minimum specification is 85%. Is the machine shop capable of meeting this specification? What % of the weeks does not meet the specification? ???? 3 XU S LCpu ???? 3 L S LXCpl% of weeks not meeting the standard = Cpk = Minimum (Cpu, Cpl)= 31 Cpk 練習(xí)答案 Exercise Answers ???3XU S LC p u???3L S LXCp l % not meeting the standard Cpk .89 .83
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