【正文】 s OK to ship)幾乎都可以查到 (如能通過這項檢測，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)計算風險順序數(shù) (RPN)w RPN = S x O x D= Severity of Effect x Occurrence Rating x Detection Rating= 后果的嚴重度 x 原因可能出現(xiàn)的頻度x 探測度w Focus on high RPNs關注 RPN較高的項目 PFMEA 13. Remended Corrective Action推薦的糾正措施w Aim for PREVENTION rather than detection以 預防預防 而非探測為目的w Begin with the highest RPN items, 從 RPN高的項目開始Edon‘t set an a priori “cutoff” value (. prior to beginning the FMEA)，勿預先設定 “分數(shù)線 ”w Give serious attention to items with Severity = 9 or 10嚴重度＝ 9或 10時應特別注意PFMEAw What corrective action, if any, should be taken to reduce the，應采取哪些措施以降低 Eseverity (probably need a design change), 嚴重度（可能需修改產品設計） Elikelihood of occurrence, 頻度 Edetection rating，探測度 ? w You don39。E this includes the sharing of information with your customer也不得向顧客透露有關信息。 as the team reaches consensus, record the information on the FMEA form先在一張草稿紙上進行分析；當小組達成一致意見后，再將有關信息填在 FMEA表上E use fishbone and tree diagrams liberally 充分利用魚刺圖和樹形圖E trying to use the FMEA form as a worksheet leads to confusion and messedup FMEAs 若將 FMEA表當做工作單使用，就會造成混亂，使 FMEA一塌糊涂PFMEA Process FMEA過程 FMEAw何謂 PFMEAw何時作 PFMEAw何人作 PFMEAw如何作 PFMEAw16步工作步驟步工作步驟PFMEA 1. Assemble a team and plan your activities成立小組并制訂計劃w PFMEA must never be done by an individual, because 絕不能由個人單獨進行 PFMEA，因為： Eindividual efforts produce biased results,由個人進行會使結果出現(xiàn)偏差Eany actions will require buyin from various groups進行任何活動，都需要從不同的組織取得信息PFMEAw One person (. the leader) should be assigned to maintaining the FMEA form 應指定一個人 (如組長 )保管 FMEA表格EBe sure to write the names and functions of the team members on the FMEA form應將小組成員的姓名和職責填入 FMEA表格1. Assemble a team and plan your activities成立小組并制訂計劃PFMEA 2. Develop a process flow diagram 繪制過程流程圖wUse the Process Flow Diagram format 運用正規(guī)的過程流程圖Eidentifies fabricate, move, store and inspect operations 辨別四種作業(yè)類型Eidentifies Key Characteristics辨別關鍵特性PFMEA Supplier________________ Date_______________Part Number_____________ Revision Level______Part Description__________ Prepared by_________pressuremold partfab move store inspstep oper. descr. ite