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1、Process Failure Mode and Effects Analysis (Process FMEA)SCOPE DEFINITION (Step 1)Company Name:Name of company responsible for PFMEASubject:Name of PFMEA projectSystem/sub-system/component/part:Name of system elementPlant Location:Geographical locationPFMEA Start Date:Date PFMEA project startedPFMEA

2、ID Number:Determined by the companyCustomer Name:Name of customer (s) or product family PFMEA Revision Date:Date of most recent changeProcess Responsibility:Name of PFMEA ownerModel Year / Platform:Customer application or company model / styleCross-Functional Team:Team Roster neededConfidentiality L

3、evel: Business Use, Confidential, Propriotary, etc. STRUCTURE ANALYSIS (Step 2)FUNCTION ANALYSIS (Step 3)FAILURE ANALYSIS (Step 4)RISK ANALYSIS (Step 6)OPTIMIZATION (Step 6)RemarksCONTINUOUSIMPROVEMENT1.Process ItemSystem, Subsystem, Part Element orName of Process2.Process StepStation No. and Name o

4、f FocusElement3.Process Work Element Man, Machine, Material (Indirect),Milieu (Environment), etc. 1.Function of the Process Item In-plant, Ship to plant, Process Item,Vehicle End user, when known 2.Function of the Process Step andProduct Characteristic( Quantitative value is optional )3.Function of

5、the Process WorkElement and Process Characteristic1.Failure Effects (FE)In-plant, ship to plant, process item,vehicle end user, when knowOriginal Severity(S)of FE2.Failure Mode (FM) of the ProcessElement3.Failure Cause (FC) of the WorkElementCurrent Prevention Control(PC) of FCOccurrence(O)of FCCurr

6、ent Dectection Controls(DC) of FC or FMDetection(D) of FC/FMAction Priority (AP)Special Product CharFilter Code (optional)Prevention ActionDetection ActionResponsiblePersonTargetCompletion Date(TCD)Status:Open,Completed,DiscardedAction Takenwith Pointer toEvidenceCompletionDateSeverity (S)Occurrence

7、 (O)Detection (D)Action Priority (AP)History / ChangeAuthorization (AsApplicable)The name of the process beinganalyzed e.g. electrical motorassembly line which is the end resultof all successfully completed processstepsmay also be a non-directmanufacturing process e.g. shippingThe operation or stati

8、on to beanalyzed that produces the ProcessItem e.g. OP30 Sintered bearingPress-in processUse the 4Ms to identity types ofvariation that have an influence on theoperation or station being analyzed4M Types:Man, Machine, Material (indirect),Milieu (Environment)List a single M for each line.Types may va

9、ry by companyA description of what the ProcessItem is expected to achieve brokendown into several categoriesSome categories maybe unknownand listed as Not Applicable (NA)These expectations can be referred towhen completing Failure Effects (FE)These expected results may apply forthe entire Process It

10、em e.g. electricalmotor assembly lineIn-plant:Avoid rework and scrapShip to plant Installation of windowlifter electrical motor to vehicle doorProcess Item.:Shaft installed intopole house assemblyVehicle.:Window raises and lowersA description of what the operation orstation must achieve e.g. Axialpo

11、sition sintered bearing in polehousingThis is the positive ProductCharacteristic and must be detectablein the productThe Failure Mode or Failure Modeswill be the negative or negatives of thepositive Product Characteristic.The Product Characteristic can bewritten stating the entire positiveProduct Ch

12、aracteristic, e g within gaptolerance, or using separate lines,considering over and under tolerance,e g , not greater then max tolerance,not less than min tolerance. It may alsoconsider magnitude of out to toleranceif it effects the Failure Effects e.g. gapnot greater then max tolerance by03mm or ga

13、p not greater then maxtolerance - More than 3 mmA positive description of how the workis completed including the positiveprocess characteristic related to each4MThe negative of these positives will beused for the Failure Cause columnThe more detail used here willproduce more Failure Cause i.e. eachl

14、ine is a unique positive producing aunique negative, i.e. a Failure CauseInstead of “Get correct sinteredbearing from part rack and place intofixture” Use “Get correct sinteredbearing” and “Fully place bearing intofixture”This identifies of two separateFailure Causes, i.e. “wrong partpicked” “Bearin

15、g not fully set intofixture” The more detail used, themore Causes can be captured in thedocumented for risk analysis.Other possible positive processcharacteristic - “Pick part from partrack without scratching the topsurface”, “Place part into fixturewithout using too much force”. Applytorque to bolt

16、 until green lightappears. Apply torque to bolt untilgreen light appears but not beyond.“Pick correct lubrication”. “Applycorrect volume of lubrication”New Product Characteristic andFailure Modes- While considering“Function of the Process WorkElement and Process Characteristic”new “Product Character

17、istics”.“Failure Causes” and “Failure Modes”maybe generated, i.e. listing. “Pickpart from part rack without scratchingthe top surface”, may generate a newFailure Cause. “Scratched top surfacewhile picking part from rack” and anew “Product Characteristics”, “Topsurface scratch free” and new FailureMo

18、de “Top surface scratched”How the Vehicle, System orSubsystem could fail to perform theFunction described at the Next HigherlevelWhen considering Effects, consideritems listed in “Function of theProcess Item” and the Failure Mode”end how they can Effect the 3 areasbeing considered (In-Plant, Ship to

19、plant. Process Item, Vehicle EndUser)Include potential effects to the vehicle(End User) level end regulations. asapplicableIt is recommended to list the SeverityRank next to each of the 3 areasbeing considered and use the highestRank for the Severity Rank. One area,such as End User. may not alwaysha

20、ve the highest Severity Rank110Failure mode must be detectable inthe product (defect)The Failure Mode will be the negativeor negatives of the positive ProductCharacteristic.Considering each side of thespecification of Product Characteristicif specification of ProductCharacteristic has a range, list

21、FailureMode for each side of thespecification, i.e., “Torque Bolt tospec”, the Failure Modes will be“Torque loss then spec”, “Torque morethan spec” Each may have a differentSeverity Rank.Considering magnitude of out ofspecification If the magnitude of out ofspecification can affect the SeverityRank.

22、 It should he listed, i.e., “Nostamping cracks”, the Failure Modescould be crack 0 - 10 mm long”,Severity Rank 4. “Crack greater than10 mm but less than 20 mm long”.Severity Rank 7. “Crack 20 mm orgreater” Severity Rank 10. Each willhave its own Occurrence Ranks.Controls, etc.When using a spreadshee

23、t to performthe Failure Analysis it isrecommended to begin with FailureModes then identify Failure Effectsand Causes.The Failure Cause is the negative ofthe positive listed in “Function of theProcess Work Element and ProcessCharacteristic”Cause must be detectable in theprocess (error) and lead to th

24、e FailureModeNew Failure Causes - Whileconsidering “Failure Causes”, newFunction of the Process WorkElement and Process Characteristic”,“Product Characteristic and maybegenerated, i.e. listing. “Scratched topsurface while picking part from rack”can generate “Pick part from part rackwithout scratchin

25、g the top surface”,may generate and a new “ProductCharacteristics”, “Top surface scratchtree” and a new Failure Mode “Topsurface scratched”Failure Analysis can begin with theFM. FF or FC as long as there is anaccurate Failure ChainInitial State - Past controlsproven and / or controlscommitted to110I

26、nitial State - Past controlsproven and / or controlscommitted to110H, M,L, NALLAdditional Actionsneeded to reduceOccurrenceAdditional Actionsneeded to improveDetectionName, not titleor departmentmm yy or dd mmyyOptional:Decisionpending,ImplementationpendingDescription ofaction taken anddocumentnumbe

27、r, reportname and date,etc.mm yy or ddmm yy110110110H, M,L, NAFor PFMEA teamuseExamples:A design change:DCN0983885A managementreview:MR07-NOV-2017A customer review:CR02-FEB-2018Electrical MotorOP 30 Sintered bearing pressOperatorProcess Item: Convert electricalenergy into mechanical energy (acc.cont

28、rol signal)In Plant: Assembly of componentswithin cycle time, without scrap orreworkShip to Plant: Assembly of motor tovehicle door without line stoppage,sort or containmentEnd User Window raises and lowersPress in sintered bearing to achieveaxial position in pole housing to maxgap per printOperator

29、 takes clean sintered bearingfrom chute and push it onto the press-in shaft until the upper stopProcess Item: Loss of mechanicalenergy because of too much frictionbetween bearing and shaft, innerdiameter of the bearing deformedbecause off too much seating stressIn Plant: NoneShip to Plant NoneEnd Us

30、er: Window raises and lowerswith difficulty8Axial position of sintered bearing isnot reached, gap too smallOperator inserts a sintered bearingwhich was dropped to the ground floorbefore (contaminated with dirt)No Prevention control10Lot release Protectobjective (effectiveity 100%)Visual Gauge inspec

31、tion ofaxial gap of bearing to polehousing eat by operator(check the checker:N/A)Dectection indicator:OK/NOK (RED/GREENarea) and operator separatethe NOK part2HCCThe definition of a workinstruction and a workinstruction for fallingcomponents andcontents of the regularTraining curricular theoperator

32、and finishingstaffJohn Doe(ProductionEngineer)DD.MM.YYYYIn-progress832LElectrical MotorOP 30 Sintered bearing pressMachine (press machine)Process Item: Convert electricalenergy into mechanical energy (acc.control signal)In Plant: Assembly of componentswithin cycle time, without scrap orreworkShip to

33、 Plant: Assembly of motor tovehicle door without line stoppage,sort or containmentEnd User Window raises and lowersPress in sintered bearing to achieveaxial position in pole housing to maxgap per printMachine has to press in the sinteredbearing into the pole housing seat untilthe defined axial posit

34、ionProcess Item: Loss of mechanicalenergy because of too much frictionbetween bearing and shaft, innerdiameter of the bearing deformedbecause off too much seating stressIn Plant: NoneShip to Plant NoneEnd User: Window raises and lowerswith difficulty8Axial position of sintered bearing isnot reached,

35、 gap too smallMachine stops before reaching finalposition (too less force)Selected press with forcemonitoring and positioncontrol sensor3Lot release Protectobjective (effectiveity 100%)Visual Gauge inspection ofaxial gap of bearing to polehousing eat by operator(check the checker:N/A)2M3Electrical M

36、otorOP 30 Sintered bearing pressMachine (press machine)Process Item: Convert electricalenergy into mechanical energy (acc.control signal)In Plant: Assembly of componentswithin cycle time, without scrap orreworkShip to Plant: Assembly of motor tovehicle door without line stoppage,sort or containmentE

37、nd User. Window raises and lowersPress in sintered bearing to achieveaxial position in pole housing to maxgap per printMachine has to press in the sinteredbearing into the pole housing seat untilthe defined axial positionProcess Item: NoneIn Plant: Assembly of shaft is notpossible because clearance

38、too small(scrap 7), excessive line cycle time (7)Ship to Plant: n/aEnd User: n/a7axial position of sintered bearing isnot reached, gap too largeMachine stops before reaching finalposition (too less force)Selected press with forcemonitoring and positioncontrol sensor3Lot release Protectobjective (eff

39、ectiveity 100%)Visual Gauge inspection ofaxial gap of bearing to polehousing eat by operator(check the checker:N/A)Dectection indicator:OK/NOK (RED/GREENarea) and operator separatethe NOK part3M3missed contexts in draft handbookProcess Failure Mode and Effects Analysis (Process FMEA)過程失效模式及效果分析(過程FM

40、EA)步步驟驟1 1:范范圍圍定定義義公司名稱: 負(fù)責(zé)PFMEA的 公司任務(wù)描述: PFMEA項(xiàng)目名稱系統(tǒng)/子系統(tǒng)/部件名稱:系統(tǒng)零部件的名稱工廠地點(diǎn): 地理位置PFMEA開始日期: PFMEA開始日期PFMEA編號(hào): 按公司內(nèi)部規(guī)定顧客名稱: 顧客名或過程族名稱PFMEA修訂日期: 最新修訂日期過程負(fù)責(zé)人: 即PFMEA負(fù)責(zé)人車型年/平臺(tái): 顧客車型年型/平臺(tái)/款型跨職能小組: 小組名單保密等級(jí): 例如:對(duì)外/機(jī)密/內(nèi)部使用步步驟驟2 2:結(jié)結(jié)構(gòu)構(gòu)分分析析步步驟驟3 3:功功能能分分析析步步驟驟4 4:失失效效分分析析步步驟驟5 5:PFMEAPFMEA 風(fēng)風(fēng)險(xiǎn)險(xiǎn)分分析析步步驟驟6 6:優(yōu)優(yōu)

41、化化備注持續(xù)改進(jìn)1. 過程項(xiàng)目系統(tǒng)、子系統(tǒng)、零部件要素,或過程名稱2. 過程步驟工作站編號(hào)和關(guān)注要素名稱3. 作業(yè)要素(人、機(jī)、料(間接)、環(huán),等等)1. 過程項(xiàng)目的功能(內(nèi)部工廠、客戶工廠、過程項(xiàng)目、車輛用戶,如果信息可獲取的話)2. 過程步驟的功能和產(chǎn)品特性(可用量化數(shù)據(jù))3. 作業(yè)要素的功能和過程特性1. 失效影響 (FE)(內(nèi)部工廠、客戶工廠、過程步驟、車輛用戶,如果信息可獲取的話)嚴(yán)重度 (FE)2. 過程步驟的失效模式 (FM)3. 作業(yè)要素的失效原因 (FC)當(dāng)前針對(duì)FC的預(yù)防性控制措施 (PC)FC發(fā)生度 (O)當(dāng)前針對(duì)FC或FM的探測性控制措施 (DC)FC/FM 探測度(D

42、)AP (行動(dòng)優(yōu)先級(jí))特殊特性過濾代碼(可選)預(yù)防措施探測措施責(zé)任人目標(biāo)完成日期狀態(tài)(進(jìn)行中/完成/取消)采取的措施和降低分值的證據(jù)實(shí)際完成日期更新嚴(yán)重度 (S)更新發(fā)生度 (O)更新探測度 (D)更新PFMEA AP歷史/變更授權(quán)(如適用)要分析的過程名稱,例如電機(jī)裝配線,其是所有過程步驟的集合。也可以是非制造過程,例如發(fā)運(yùn)要分析的操作或工位,這些用以組成過程,例如OP 30軸承壓入工序采用4M法來識(shí)別影響所分析的操作或工位的差異來源。4M:人、機(jī)器、物料(非直接物料)、環(huán)境。公司可自行選擇其它方法描述過程所要實(shí)現(xiàn)或達(dá)成的內(nèi)容,可分成幾類。如果未知的話就寫NA。這些所要實(shí)現(xiàn)或達(dá)成的內(nèi)容其實(shí)可

43、在失效分析(FE)完成后進(jìn)行倒推。以下例子可用于整個(gè)過程,例如電機(jī)裝配線內(nèi)部工廠:避免返工和報(bào)廢;客戶工廠:搖窗機(jī)電機(jī)安裝到車門上;過程:裝入總成殼體;車輛:升降車窗玻璃描述操作或工位要實(shí)現(xiàn)什么:例如軸承在電機(jī)機(jī)殼的軸向位置。這是明確的產(chǎn)品特性,必須能在產(chǎn)品上被探測到。失效模式將是這些產(chǎn)品特性的不足。產(chǎn)品特性可描述成滿足要求規(guī)范,例如在間隙公差范圍內(nèi),或不超過公差上下限。考慮到失效影響(FE)的程度,或許也以此種形式表述:不超過間隙上公差03mm,或最多不能大于上公差3mm描述作業(yè)應(yīng)當(dāng)是如何完成的,包括與4M相應(yīng)的過程特性。對(duì)應(yīng)的不足將填寫在失效原因(FC)列。越細(xì)化能對(duì)應(yīng)出越多的失效原因,也

44、就是說一個(gè)不足就是一個(gè)失效原因。例如“從料箱拿軸承并放入制具”,如果換種形式表述“拿取正確軸承”+“把軸承完全放入制具”,這樣就能對(duì)應(yīng)出兩個(gè)失效原因,即“拿取錯(cuò)誤軸承”和“軸承未完全放入制具”。描述地越細(xì),則有越多的原因,以便下一步分析。其它可能的過程特性-“從料箱拿軸承時(shí)不刮傷表面”,“軸承放入制具中時(shí)不用太大力”,“擰緊螺栓直到扭矩?zé)袅辆G”,“擰緊螺栓直到扭矩?zé)袅辆G,此時(shí)不能再用力”,“拿取正確的潤滑油”,“涂正確量潤滑油”。新新的的產(chǎn)產(chǎn)品品特特性性和和失失效效模模式式-當(dāng)考慮“作業(yè)要素的功能和過程特性”時(shí),新的“產(chǎn)品特性”、“失效原因”和“失效模式”可能會(huì)產(chǎn)生,比如“從料箱拿軸承時(shí)不刮傷

45、表面”就可能對(duì)應(yīng)出新的失效原因“從料箱拿軸承時(shí)刮傷表面”、新的產(chǎn)品特性“上端面無劃痕”、新的失效模式“上端面刮傷”車輛、系統(tǒng)或子系統(tǒng)如何不能實(shí)現(xiàn)(上一層級(jí))功能要求。當(dāng)分析影響時(shí),要考慮“過程功能”里的內(nèi)容和“失效模式”,以及如何影響這三個(gè)方面(內(nèi)部工廠、客戶工廠、過程步驟、車輛用戶)。如適用,還要考慮法律法規(guī)的不符合情況。建議對(duì)這三個(gè)方面分別進(jìn)行嚴(yán)重度打分,并選擇其中最大的分?jǐn)?shù)。對(duì)車輛用戶的影響的嚴(yán)重度分值不一定是最高的。110失效模式(不良/缺陷)必須是在產(chǎn)品中可探測的。失效模式其實(shí)也是產(chǎn)品特性的不足。如果產(chǎn)品特性有規(guī)范上下限的話,要分別考慮上下限的失效模式,例如“螺栓擰緊扭矩滿足規(guī)范”,

46、對(duì)應(yīng)失效模式為“扭矩低于下限”和“扭矩高于上限”,兩者對(duì)應(yīng)的嚴(yán)重度可能是不一樣的??紤]超出規(guī)范的量級(jí),如果超出的量級(jí)影響嚴(yán)重度的話。例如“無沖壓裂紋”,失效模式可能是“裂紋長度010mm”-嚴(yán)重度4,“裂紋長度1020mm”- 嚴(yán)重度7,“裂紋長度20mm以上”- 嚴(yán)重度10。其有各自對(duì)應(yīng)的發(fā)生度和控制措施。當(dāng)使用FMEA Excel表時(shí),建議先從失效模式開始分析,然后是失效影響和失效原因。失效原因是“作業(yè)要素的功能和過程特性”中相應(yīng)的不足。原因必須是過程中可探測的(錯(cuò)誤),是導(dǎo)致失效模式的。新失效原因- 當(dāng)考慮“失效原因”時(shí),新的“作業(yè)要素的功能和過程特性”、“產(chǎn)品特性”和“失效模式”可能會(huì)

47、產(chǎn)生,比如“從料箱拿軸承時(shí)刮傷表面”就可能對(duì)應(yīng)出“從料箱拿軸承時(shí)不刮傷表面”、新的產(chǎn)品特性“上端面無劃痕”、新的失效模式“上端面刮傷”。失效分析可從失效模式、失效影響或失效原因開始,假如失效鏈?zhǔn)蔷_的話。已實(shí)施的和/或確定要實(shí)施的控制措施110已實(shí)施的和/或確定要實(shí)施的控制措施110H,M,L,NACCLL降低O值的額外措施降低D值的額外措施填具體人姓名,不是部門年月日或:待決定/待實(shí)施采取的措施以及文件號(hào),匯報(bào)人及日期,等等年月日110110110H,M,L,NA供PFMEA小組使用例如:已對(duì)HighAP進(jìn)行了評(píng)審,基于已實(shí)施的預(yù)防性和探測性控制措施,認(rèn)為無需額外行動(dòng)措施例如:設(shè)計(jì)變更DCN

48、098385,管理層評(píng)審MR07-NOV-2017,顧客評(píng)審CR02-FEB-2018玻璃升降電機(jī)總成OP# 30 壓入球面軸承作業(yè)員過程:按控制信號(hào)轉(zhuǎn)化電能為機(jī)械能;內(nèi)部工廠:在周期時(shí)間內(nèi)裝配,無報(bào)廢和返工;客戶工廠:電機(jī)安裝到車門不會(huì)出現(xiàn)停線/停頓、揀選、遏制;用戶:升降車窗玻璃在電機(jī)殼里壓入球面軸承,軸向位置在圖紙公差允許范圍內(nèi)作業(yè)員從料箱拿取正確型號(hào)的清潔的球面軸承,并放到壓機(jī)的上止位過程:機(jī)械能損失,因?yàn)榍蛎孑S承與轉(zhuǎn)子間摩擦過大,球面軸承與軸承座過緊使得球面軸承內(nèi)尺寸變形(8);內(nèi)部工廠:無客戶工廠:無;用戶:車窗玻璃升降困難(7)8 軸承軸向位置沒有達(dá)到,間距過小作業(yè)員使用之前掉到

49、過地上的軸承(軸承上有異物)無10批次放行要求(100%有效),檢驗(yàn)員用檢具檢查球面軸承與電機(jī)座的間距,用綠色和紅色記號(hào)筆標(biāo)記OK/NOK件,再由作業(yè)員篩選。3HCC作業(yè)指導(dǎo)書規(guī)定不允許使用掉到地上的軸承,并培訓(xùn)相關(guān)人員JohnDoe(生產(chǎn)工程師)進(jìn)行中玻璃升降電機(jī)總成OP# 30 壓入球面軸承作業(yè)員過程:按控制信號(hào)轉(zhuǎn)化電能為機(jī)械能;內(nèi)部工廠:在周期時(shí)間內(nèi)裝配,無報(bào)廢和返工;客戶工廠:電機(jī)安裝到車門不會(huì)出現(xiàn)停線/停頓、揀選、遏制;用戶:升降車窗玻璃在電機(jī)殼里壓入球面軸承,軸向位置在圖紙公差允許范圍內(nèi)作業(yè)員從料箱拿取正確型號(hào)的清潔的球面軸承,并放到壓機(jī)的上止位過程:機(jī)械能損失,因?yàn)榍蛎孑S承與轉(zhuǎn)子

50、間摩擦過大,球面軸承與軸承座過緊使得球面軸承內(nèi)尺寸變形(8);內(nèi)部工廠:由于間距小,轉(zhuǎn)子裝配困難(報(bào)廢)(7),周期時(shí)間超時(shí)(7);客戶工廠:無;用戶:車窗玻璃升降困難(7)8 軸承軸向位置沒有達(dá)到,間距過小作業(yè)員拿了錯(cuò)誤型號(hào)的軸承料箱門根據(jù)軸承型號(hào)自動(dòng)打開;作業(yè)指導(dǎo)書;作業(yè)員培訓(xùn)1 批次放行要求(100%有效),檢驗(yàn)員用檢具檢查球面軸承與電機(jī)座的間距,用綠色和紅色記號(hào)筆標(biāo)記OK/NOK件,再由作業(yè)員篩選。無法繼續(xù)裝配1L玻璃升降電機(jī)總成OP# 30 壓入球面軸承機(jī)器(壓機(jī))過程:按控制信號(hào)轉(zhuǎn)化電能為機(jī)械能;內(nèi)部工廠:在周期時(shí)間內(nèi)裝配,無報(bào)廢和返工;客戶工廠:電機(jī)安裝到車門不會(huì)出現(xiàn)停線/停頓、

51、揀選、遏制;用戶:升降車窗玻璃在電機(jī)殼里壓入球面軸承,軸向位置在圖紙公差允許范圍內(nèi)壓機(jī)把球面軸承壓入電機(jī)殼至規(guī)定的軸向位置過程:機(jī)械能損失,因?yàn)榍蛎孑S承與轉(zhuǎn)子間摩擦過大,球面軸承與軸承座過緊使得球面軸承內(nèi)尺寸變形(8);內(nèi)部工廠:由于間距小,轉(zhuǎn)子裝配困難(報(bào)廢)(7),周期時(shí)間超時(shí)(7);客戶工廠:無;用戶:車窗玻璃升降困難(7)8 軸承軸向位置沒有達(dá)到,間距過小壓機(jī)在還沒壓到位就停止了(壓力太?。┦褂脦в袎毫臀恢脗鞲衅鞯膲簷C(jī)3 批次放行要求(100%有效),檢驗(yàn)員用檢具檢查球面軸承與電機(jī)座的間距,用綠色和紅色記號(hào)筆標(biāo)記OK/NOK件,再由作業(yè)員篩選。3LProcess Failure Mo

52、de and Effects Analysis (Process FMEA) ReportSCOPE DEFINITION (STEP 1)STRUCTURE ANALYSIS (STEP 2)1. Process ItemSystem, Subsystem, Part Element or Name ofProcessElectrical MotorFUNCTION ANALYSIS (STEP 3)1.Function of the Process Item In-plant, Ship to plant, Process Item, Vehicle End user,when known

53、 Product: convert electrical energy into mechanicalenergy(acc. Control signal)In Plant : Good first time qualityShip to plant: No disruptionsEnd user: Window glass moves up and down.FAILURE ANALYSIS (STEP 4)1.Failure Effects (FE) to the Next Higher LevelElement and / or Vehicle End UserSeverity (S)

54、of FEProduct: Loss of mechanical energy(8)In Plant: N/AShip to Plant: N/AEnd User: Window doesnt move(8)82. Process StepStation No. and Name of Focus Element3. Process Work Element Man, Machine, Material (Indirect), Milieu(Environment), etc. OP30 Sintered bearing press-in processStep 1 Select sinter

55、ed bearing from chute Operator2.Function of the Process Step and ProductCharacteristic( Quantitative value is optional )3.Function of the Process Work Element andProcess CharacteristicAxial position sintered bearing in pole housing(max.gap per print)Correct bearing2.Failure Mode (FM) of the Focus El

56、ement3.Failure Cause (FC) of the Next Lower Element orCharacteristicAxial position of sintere bearing is not reachedWrong bearing selectedProcess Failure Mode and Effects Analysis (Process FMEA) ReportSTRUCTURE ANALYSIS (STEP 2)FUNCTION ANALYSIS (STEP 3)FAILURE ANALYSIS (STEP 4)Company Name:Subject:

57、Name of company responible for PFMEAName of PFMEA projectEnginieering Location:PFMEA Start Date:Geographical locationDate PFMEA project startedCustomer Name:PFMEA Revision Date:Name of customer(s) or Product FamilyDate of most recent changeModel Year / PlatformCross Functional TeamCustomer applicati

58、on or company model / styleTeam Roster neededRISK ANALYSIS (STEP 5)OPTIMIZATION (Step 6)Current Prevention Control(PC) ofFCOccurrence (O) of FCCurrent Detection Controls(DC) of FC or FMDetection (D) of FC/FMAction Priority / APSpecial Product CharFilter Code (optional)INITIAL STATEAutomated chute do

59、or openingWork instructionOpeartion 30 training1Discrepant product cannot bephysically produced1LCCSystem/sub-system/component/part:Name of system elementPFMEA ID Number:Determined by the companyDesign Responsibility:Name of PFMEA ownerConfidentiality Level: Business Use, Confidential, Propriotary,

60、etc. ResponsiblePersonTargetCompletion Date(TCD)Status:Open,Completed,DiscardedAction Taken withPointer toEvidenceCompletionDateRemarksSubject:Name of PFMEA projectPFMEA Start Date:Date PFMEA project startedPFMEA Revision Date:Date of most recent changeCross Functional TeamTeam Roster neededOPTIMIZA

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