{"id":4854,"date":"2016-03-23T08:04:00","date_gmt":"2016-03-23T00:04:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=4854"},"modified":"2018-08-21T16:05:44","modified_gmt":"2018-08-21T08:05:44","slug":"cpk-1-33","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2016\/03\/cpk-1-33\/","title":{"rendered":"Cpk\u8981\u6c42\u7ba1\u63a71.33\u7684\u6578\u5b57\u662f\u600e\u9ebc\u4f86\u7684\u5462?"},"content":{"rendered":"\n

\"Cpk\u8981\u6c42\u7ba1\u63a7\u76841.33\u6578\u5b57\u662f\u600e\u9ebc\u4f86\u7684\u5462?\"<\/p>\n

Cpk\uff08Process Capability Index\uff0c\u88fd\u7a0b\u80fd\u529b\u6307\u6a19\uff09\u662f\u7d71\u8a08\u88fd\u7a0b\u7ba1\u5236(SPC\uff0cStatistical Process Control)\u88e1\u4e00\u500b\u975e\u5e38\u91cd\u8981\u7684\u5c08\u6709\u540d\u8a5e\uff0c\u77ad\u89e3\u4e86Cpk\u5c31\u7b49\u65bc\u77ad\u89e3\u4e00\u5927\u534a\u7684SPC\u89c0\u5ff5\u3002\u76f8\u4fe1\u4f60\u4e5f\u7d93\u5e38\u807d\u4eba\u5bb6\u8aaaCpk<\/a><\/font>\u6700\u597d\u8981\u7ba1\u63a7\u57281.33\u4ee5\u4e0a\uff0c\u4f46\u4f60\u6709\u6c92\u6709\u60f3\u904e\u70ba\u4ec0\u9ebc\u662fCpk>1.33\u800c\u4e0d\u662f\u5176\u4ed6\u7684\u6578\u5b57\u5462\uff1f<\/font><\/p>\n

\u60f3\u77ad\u89e3Cpk=1.33\u9019\u500b\u7ba1\u63a7\u6578\u5b57\u662f\u600e\u9ebc\u4f86\u7684\u4e4b\u524d\uff0c\u6211\u5011\u5f97\u5148\u77ad\u89e3\u4e00\u4e0b<\/font>\u4f55\u8b02Cpk<\/font>\uff1f\u9019Cpk\u53c8\u662f\u600e\u9ebc\u7b97\u51fa\u4f86\u7684\u5462\uff1f<\/font><\/p>\n

<\/p>\n

Cpk\u7684\u8a08\u7b97\u516c\u5f0f\u6709\u5169\u7a2e\u65b9\u6cd5\uff0c\u4f46\u57fa\u672c\u4e0a\u7d50\u679c\u90fd\u662f\u4e00\u6a23\u7684<\/font><\/b><\/p>\n

\u7b2c\u4e00\u7a2eCpk\u7684\u8a08\u7b97\u516c\u5f0f\u8981\u5148\u8a08\u7b97<\/strong>Ck<\/strong><\/a>(\u53c8\u7a31Ca)\u8207<\/strong>Cp<\/strong><\/a>\uff0c\u7136\u5f8c\u624d\u7b97\u51fa<\/strong>Cpk<\/strong><\/a>\uff0c\u7c21\u55ae\u6574\u7406\u5982\u4e0b\uff1a<\/strong><\/font><\/p>\n

\n

Ck<\/a> = (M-X)\/(T\/2)\uff0cM:\u898f\u683c\u4e2d\u5fc3\u503c\uff0cX:\u91cf\u6e2c\u6578\u64da\u5e73\u5747\u503c\uff0cT:\u898f\u683c\u5bec\u5ea6<\/font><\/p>\n

Cp<\/a> = T\/6\u03c3\uff0cT:\u898f\u683c\u5bec\u5ea6\uff0c\u03c3\uff1a\u91cf\u6e2c\u6578\u64da\u7684\u6a19\u6e96\u5dee<\/font><\/p>\n

Cpk<\/a> = (1-Ck) x Cp<\/font><\/p>\n<\/blockquote>\n

\u7b2c\u4e8c\u7a2eCpk\u7684\u8a08\u7b97\u516c\u5f0f\u5206\u5225\u4f7f\u7528\u898f\u683c\u4e0a\u4e0b\u9650\u4f86\u8a08\u7b97\u53d6\u6700\u5c0f\u503c\u5c31\u662fCpk\uff1a<\/strong><\/font><\/p>\n

\n

Cpu\uff08\u7ba1\u5236\u4e0a\u9650\uff09= (USL-u)\/3\u03c3\uff0c
USL:\u898f\u683c\u4e0a\u9650\uff0cu:\u91cf\u6e2c\u6578\u64da\u5e73\u5747\u503c\uff0c \u03c3\uff1a\u91cf\u6e2c\u6578\u64da\u7684\u6a19\u6e96\u5dee<\/font><\/p>\n

Cpl\uff08\u7ba1\u5236\u4e0b\u9650 \uff09= (u-LSL)\/3\u03c3\uff0c
LSL:\u898f\u683c\u4e0b\u9650\uff0cu:\u91cf\u6e2c\u6578\u64da\u5e73\u5747\u503c\uff0c \u03c3\uff1a\u91cf\u6e2c\u6578\u64da\u7684\u6a19\u6e96\u5dee<\/font><\/p>\n

Cpk = min\uff5bCpl, Cpu\uff5d\uff0c
\u4e5f\u5c31\u662f\u7b97\u51faCpu, Cpl\u5f8c\uff0c\u53d6\u5169\u8005\u4e2d\u7684\u6700\u5c0f\u503c\u5c31\u662fCpk\u3002<\/font><\/p>\n<\/blockquote>\n

\u9019\u88e1\u6709\u4e00\u7d44\u6578\u5b57\uff0c\u53ef\u4ee5\u8a66\u8457\u7528\u9019\u5169\u7a2e\u65b9\u6cd5\u4f86\u8a08\u7b97\u4e00\u4e0b\u5176Cpk\uff0c\u7b97\u51fa\u4f86\u7684\u7d50\u679c\u61c9\u8a72\u6703\u4e00\u6a23\uff0c\u8acb\u6ce8\u610f\uff1a\u5982\u679c\u6709\u8ca0\u6578\u51fa\u73fe\u8981\u53d6\u7d55\u5c0d\u503c\u3002<\/font><\/p>\n