【正文】 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 49 Real Life FMEA Exercise H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 43 Step 5 Establish Actions and Responsibilities 1. What has to be improved : change of design life test contact with supplier control point build in, in production process etc. 2. Who is responsible 3. When is it finished H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 37 Current controls * Current controls are descriptions of controls that: (a) prevent the failure mode from occurring or (b) detects the failure mode should it occur * Examples of process controls: fixture foolproofing SPC inspection either at the subject operation testing or at the subsequent operations gauge R amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 29 S u b j e c t : No P r oc e s s s t e p / P ur po s e P ot e nt i a l Fa i l ur e M od eP ot e nt i a l E f f e c t on Fa i l ur eS P ot e nt i a l c a us e s on Fa i l ur eO C ur r e nt C on t r olD R P N1 M o u n t a c t u a t o r a n d i n s t a l l s p r i n g c l i p = H o l d a c t u a t o r i n p l a c eD i f f i c ul t y i n a s s e m bl i ng s pr i ng c l i p2 C u t L D G U , M o u n t L D G U t o l i n e p e n h o u s i n g = A s s e m b l e L D G ULe ns a nd g r a t i ng c on t a m i na t i on3 M o u n t a n d s e c u r e f l e x a s s y = A s s e m b l e F l e x A s s yESDFailure Mode and Effect Analysis Chart H Philips CFT Asia Pacific Innovation amp。 mount LDGU into Lightpen housing Solder actuator and LDGU to flex assy Grating amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 21 Step 1 Establish Process Flow Take into account the: ? Specification for manufacturing ? System Structure: manufacturing strategy (manual/automatic etc) technologies, processes amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 15 Producibility Analysis by Means of FMEA Premises: Measuring tool is: eg FOR/ppm Actions: Actions as oute of the Process Quality Control (.) Analysis: Focused on failures which are made and noticed during the production process. H Philips CFT Asia Pacific Innovation amp。customer?s process Service * Focus on field service FMEA * Concerned with reliability, product application, maintainability H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 4 Car 2: ? No Major Break downs ? 非 主 要 的 破 損 ? Few failures ? 很 少 的 失 效 Car 1: ? Frequent Break downs ? 頻 繁 地 破 損 ? Many minor ponents failures ? 許 多 的 小 部 件 失 效 A reliability program ? Why necessary? 一 個(gè) 可 靠 性 的 計(jì) 劃？ 為 什 么 必 須？ H Philips CFT Asia Pacific Innovation amp。 Industrial Support JAY TAN H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 8 Effect of FMEA on Process and Design changes Design Start Development Production Release Production Time No of Engineering Changes Traditional approach FMEA approach H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 12 Use of FMEA A. Reliability Engineering Reliability improvements. B. Producibility Analysis Less repairs and scrap during manufacturing. Improvement of the Zero Hour Quality. C. Production Process Analysis Less repairs and scrap. Determination of process control points. Process release. A and B during development phase. C during work preparation phase. H Philips CFT Asia Pacific Innovation amp。 L D G U t o F l e x A s s y = C o n n e c t a c t u a t o r , L D G U a n d F l e xF a il u r e M o d e amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 23 Process Flow Chart (eg) Equipments Lightpen carrier Lightpen carrier Presson tool Lightpen carrier Mounting fixture Electric screwdriver Screw dispenser LDGU cutting/ insertion machine Lightpen carrier Soldering equipment Grating adjustment machine Glue dispenser and curing unit Mount actuatr amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 26 Step3 Establish purpose of each operation and the possible failure modes ? What is the purpose of the process step ? ? Which deviations are possible ? ( FAILURE MODE ) ? What is the effect of that deviation on the producibility? ( EFFECT ) ? What is the cause of that deviation ? ( CAUSE ) H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 34 Fault Tree example Problem Cause A Cause B Cause C A1 A2 B1 B2 H Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 41 ? Risk Priority Number : (RPN) = Severity x Occurrence x Detection = RPN = S x O x D 1 RPN 1000 In themselves , absolute RPN numbers have no significance. They are only for ranking the failure causes, for corrective actions H Philips CFT Asia Pacific Innovation amp。 E f f e c t A n a ly s is P r o c e s sH Philips CFT Asia Pacific Innovation amp。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 52 Process FMEA vs Pr。 Industrial Support CZB698000006| 2020年 7月 7日星期二 | 46 S u b j e c t : D a t e : No P r oc e s s s t e p / P ur po s e P ot e nt i a l Fa i l ur e