【正文】 e to low chance ，可能性不大24 moderately to very high chance ，可能性較大 1 almost certainly (if the part passes this test, it39。s OK to ship)幾乎都可以查到 (如能通過(guò)這項(xiàng)檢測(cè)，則可放心發(fā)貨 )PFMEA Detection (D)Criteria InspectionTypes Suggested Range of Detection Methods　 A B C 　Almost ImpossibleAbsolute certainty of nondetection.　　 　　X Cannot detect or is not checked.Very RemoteControls will probably not detect.　　　　 X 　 Control is achieved with indirect or random checks only.RemoteControls have poor chance of detection.　　　　　X Control is achieved with visual checks only.Very LowControls have poor chance of detection.　　　　　X Control is achieved with double visual inspection only.LowControls may detect.　　　X　X　 Control is achieved with charting methods, such as SPC {Statistical Process Control}.ModerateControls may detect.　　　X　　　 Control is based on variable gauging after parts have left the station, or Go/No Go gauging performed on 100% of the parts after parts have left the station.Moderately High 　 　 　 Error detection is in subsequent operations, OR gauging performed on setup and firstpiece check (for setup causes only).Controls have a good chance to detect. X X 　High 　 　 　 　 Error detection instation, or error detection in subsequent operations by multiple layers of acceptance: supply, select, install, verify. Cannot accept descrepant have a good chance to detect. X X 　Very HighControls almost certain to detect.　X　X　　Error detection instation (automatic gauging with automatic stop feature). Cannot pass discrepant part.Very HighControls certain to detect.　X　　　　　 Discrepant parts cannot be made because item has been errorproofed by process/product design.Inspection Types: A. Errorproofed, B. Gauging, C. Manual InspectionPFMEA 12. Calculate the Risk Priority Number (RPN)計(jì)算風(fēng)險(xiǎn)順序數(shù) (RPN)w RPN = S x O x D= Severity of Effect x Occurrence Rating x Detection Rating= 后果的嚴(yán)重度 x 原因可能出現(xiàn)的頻度x 探測(cè)度w Focus on high RPNs關(guān)注 RPN較高的項(xiàng)目 PFMEA 13. Remended Corrective Action推薦的糾正措施w Aim for PREVENTION rather than detection以 預(yù)防預(yù)防 而非探測(cè)為目的w Begin with the highest RPN items, 從 RPN高的項(xiàng)目開(kāi)始Edon‘t set an a priori “cutoff” value (. prior to beginning the FMEA)，勿預(yù)先設(shè)定 “分?jǐn)?shù)線 ”w Give serious attention to items with Severity = 9 or 10嚴(yán)重度＝ 9或 10時(shí)應(yīng)特別注意PFMEAw What corrective action, if any, should be taken to reduce the，應(yīng)采取哪些措施以降低 Eseverity (probably need a design change), 嚴(yán)重度（可能需修改產(chǎn)品設(shè)計(jì)） Elikelihood of occurrence, 頻度 Edetection rating，探測(cè)度 ? w You don39。t remend corrective action? Low RPN?你不建議采取糾正措施嗎？ RPN較低？EDon39。t leave the space on the form blank. Write None不要在表上留下空格不填。應(yīng)填寫(xiě) “無(wú) ”13. Remended Corrective Action推薦的糾正措施PFMEA 14. Responsibility and Target Dates職責(zé)和預(yù)定日期w FMEA is actionoriented ， FMEA以采取措施為宗旨 w Responsibility must be assigned and recorded, with dates，確定并記錄職責(zé)及日期E Assign to the person or group best suited for implementation 指定最適合履行職責(zé)的個(gè)人或小組E Person or group assigned should have been on FMEA team被指定的個(gè)人或小組應(yīng)在 FMEA小組內(nèi)工作過(guò)PFMEA 15. Corrective Action(s) Taken已采取的糾正措施w Recorded on the form，記入表內(nèi)以便 E to track progress 追蹤進(jìn)展情況E to document due care 說(shuō)明 “應(yīng)有的注意 ”w Completion date and a brief description完成日期和簡(jiǎn)要說(shuō)明 PFMEA 16. Recalculation of RPN重新估計(jì) RPNw Evaluate the proposed corrective action評(píng)價(jià)建議采取的糾正措施w Then reestimate 然后重新評(píng)估Eseverity, 嚴(yán)重度Eoccurrence, 頻度Edetection， 探測(cè)度PFMEAw Recalculate the RPN ，重新估計(jì) RPNw Verify improvement with supporting data!!!利用支持?jǐn)?shù)據(jù)確認(rèn)改進(jìn)措施w Consequences，結(jié)果：E May reprioritize the failures有可能對(duì)失效重新排序E May lead to further corrective actions有可能需要進(jìn)一步改進(jìn)16. Recalculation of RPN重新估計(jì) RPNPFMEA謝謝觀看 /歡迎下載BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH