7 DimondProcess七顆鉆石流程

1、17 Diamond Process七顆鉆石流程Developed by: GMTG-ArlingtonL. ONeal / C. Kessler Aug 20002What is the 7 Diamond Process?七顆鉆石的流程是什么？The 7 Diamond Process is one of many tools that can be used in the problem solving process.七顆鉆石流程是可以用來(lái)解決質(zhì)量問(wèn)題的工具之一。This tool is used to investigate discrepancies discovered by t

2、he following: 它可以用來(lái)調(diào)查以下方面發(fā)現(xiàn)的差異 Global Customer Audit System (GCAS) 全球顧客評(píng)審 Yard Walk Audits 生產(chǎn)線上巡檢 Verification Stations 檢驗(yàn)工位3 Purpose of the 7 Diamond Process 7顆鉆石流程的目的 The 7 Diamond Process is a structured way of assessing our manufacturing process to determine whether of not it has failed to meet

3、the quality standard demanded by our customers.7顆鉆石流程是一個(gè)構(gòu)建好的評(píng)價(jià)我們的制造流程是否滿足了顧客所要求的質(zhì)量標(biāo)準(zhǔn)的一個(gè)方法47 Diamond Process 流程Responsibility責(zé)任Production第一步 1Production第二步2Production第三步3Rel. Engineer/SQA/Supplier負(fù)責(zé)的SQDE工程師/供應(yīng)商 4CorrectProcess?正確的工藝CorrectTool?正確的工具CorrectPart?正確的零件Parts Quality?零件質(zhì)量Responsibility責(zé)任P

4、rocess ControlManagers工藝控制負(fù)責(zé)人5aIs Engineering support required?是否需要工程方面的支持Problem IdentifiedBegin Interrogation問(wèn)題定義(開(kāi)始調(diào)查)Responsibility責(zé)任QET PST (Lead)5bSMTRGM (Lead)6Statistical Engineering(Red X Strategies)統(tǒng)計(jì)工程(紅-X方法)7Will Process ChangeResolve?工藝更改能解決問(wèn)題嗎Product ChangeRequired?產(chǎn)品更改需要嗎？Hardy Perenn

5、ial or Extremely ComplexProblem非常復(fù)雜的問(wèn)題SQA - Supplier Quality AssuranceQET - Quality Engineering TeamPST - Plant Support TeamSMT- Systems Management TeamRGM - Reliability Growth Management5Review of Responsibility職責(zé)回顧 Diamonds 1-4Production & Reliability鉆石1-4 生產(chǎn)&可靠性 Filter 5aProcess Control Manager (

6、PCM)5a 過(guò)濾 工藝控制負(fù)責(zé)人 Diamond 5b-7Product Engineering鉆石5b-7 產(chǎn)品工程6Insert Sample CountermeasureCard Here此處插入對(duì)策卡樣卡77 Diamond Process Stages流程的各步驟Stages 1 & 2 of the process are used to determine if the Production organization is running the assembly process to design intent. 1、2步是用來(lái)確定生產(chǎn)部門運(yùn)行的裝配流程滿足設(shè)計(jì)內(nèi)容。 The

7、 initial investigation (Stage 1) is done where the defect was identified.最初的調(diào)查(第一步)應(yīng)在發(fā)現(xiàn)缺陷的地方開(kāi)始Stage 2 is only used when the investigation in Stage 1 determined that the cause of the problem was from an upstream source. 第2步只能當(dāng)?shù)谝徊降恼{(diào)查,確定問(wèn)題是來(lái)源其他方面時(shí),才可開(kāi)始If the process isnt being managed to design intent,

8、 then it must be corrected and validated, prior to asking for Engineering assistance.如果工藝沒(méi)有滿足設(shè)計(jì)內(nèi)容，當(dāng)需要工程方面的協(xié)助前，必須進(jìn)行糾正并要有效。Engineering referral (Stage 3) occurs when the manufacturing process does meet design intent and the problem still exists.當(dāng)制造過(guò)程滿足設(shè)計(jì)內(nèi)容并且問(wèn)題依然存在時(shí)，第3步開(kāi)始。81 - Correct Process正確的過(guò)程 Are

9、the correct Best People Practice sheets posted?是否有正確的操作指導(dǎo)文件？ Are the Best People Practices being followed?是否執(zhí)行操作文件？ Is the operators Key Point Chart being followed?是否滿足關(guān)鍵操作點(diǎn)控制圖 Are the correct documents posted on the operation certification board? 是否在操作示板上有正確的文件 Is the job being performed to the PAD

10、s?是否按照PAD操作 Can any of these cause the problem?以下的問(wèn)題有可能產(chǎn)生問(wèn)題嗎？Stages 1&2ProductionCorrects正確的生產(chǎn)Production2Production3Rel. Engineer/SQA/Supplier 4CorrectProcess?正確的工藝過(guò)程CorrectTool?正確的工具CorrectPart?正確的零件Parts Quality?零件的質(zhì)量81 - Correct Process正確的過(guò)程 Has a mandatory sequence been identified? Is it being f

11、ollowed? 是否強(qiáng)制的操作序列號(hào)已識(shí)別，是否執(zhí)行了 Is the job being done the same on both shifts?在各班次中操作工作是否一致 Does the operator understand what the product standards are?操作者是否理解產(chǎn)品標(biāo)準(zhǔn) Is it the regular operator? Has there been a lot of turnover on the job? 是否為固定操作工？是否此操作有很多輪換人員 Has the operator been properly trained?操作者是否

12、正確培訓(xùn)過(guò) Are the visual aids current? 目前是否有目視化的輔助措施 Does the operator understand the quality outcomes of her/his job?操作者是否知道他/她的崗位的產(chǎn)品的輸出質(zhì)量 Does the operator know how to communicate when he/she has a problem?操作者是否知道當(dāng)他/她的崗位出現(xiàn)質(zhì)量問(wèn)題時(shí)如何傳遞溝通信息？Can any of these cause the problem?以下的問(wèn)題有可能產(chǎn)生問(wèn)題嗎？Stages 1&2Product

13、ionCorrects正確的生產(chǎn)Production2Production3Rel. Engineer/SQA/Supplier 4CorrectProcess?正確的工藝過(guò)程CorrectTool?正確的工具CorrectPart?正確的零件Parts Quality?零件質(zhì)量9 Are the correct tools & fixtures being used? (both shifts) 是否使用正確的工具/夾具(各班次) Are the tools set to the specified torque? 工具是否設(shè)置成規(guī)定的扭矩 Are they properly calibra

14、ted?是否進(jìn)行適當(dāng)?shù)男?zhǔn) Are both shifts using the same tool? 是否各班次用同樣的工具 Are the bits or sockets worn?是否螺絲刀或套筒已磨損 Has an extra air hose been attached to the tool? 是否在工具上有多余的空氣管 Is the tool tied to the Andon system?工具是否與暗燈相連 Has the tool been put on Bypass?是否工具被旁路 Do the tools & fixtures have mutilation protec

15、tion?是否工具/夾具有損毀保護(hù) Has the workstation been error proofed? 工位是否有防錯(cuò)設(shè)施 Does the workstation layout allow the operator to work effectively? 是否工位的布置適合操作者有效的工作 Has the Preventive Maintenance been done? (check log) 是否進(jìn)行了預(yù)防性維修(檢查表) Are tools functioning correctly? 工具功能是否正確Stages 1&2ProductionCorrectsProduct

16、ion1Production3Rel. Engineer/SQA/Supplier 4CorrectProcess?正確的工藝過(guò)程CorrectTool?正確的工具CorrectPart?正確的零件Parts Quality?零件質(zhì)量2 - Correct Tool正確的工具Can any of these cause the problem?10 Is the Parts Routing current?零件的路徑是否正確 Are the correct part numbers identified on the material racks?是否在料架上標(biāo)識(shí)有正確的零件號(hào) Are par

17、ts stocked in correct location on the rack?在料架上擺放位置是否正確 Do the part numbers on the boxes agree with the rack?包裝盒上零件號(hào)與料架上是否一致 Are all pull cards available?拉動(dòng)卡是否有效 Has a PAA been issued changing part usage?是否有零件用途改變的PAA Has the PAA expired?PAA是否過(guò)期 Is error proofing needed?是否需要防錯(cuò)措施 Is existing error pr

18、oofing device working correctly? 是否已有的防錯(cuò)設(shè)備運(yùn)行正確Stages 1&2Production1Rel. Engineer/SQA/Supplier 4CorrectProcess?正確的工藝過(guò)程ProductionCorrectsCorrectPart?正確的零件Production2CorrectTool?正確的工具Parts Quality?零件質(zhì)量3 - Correct Part正確的零件Can any of these cause the problem?11The Reliability Engineer is responsible for

19、determining if parts have changed and overall part quality. If parts quality (out of specification) is determined to be the problems root cause, then the RE will: write PR&Rs to notify the supplier that there is a problem.可靠性工程師確定零件是否更改過(guò)并對(duì)產(chǎn)品全部質(zhì)量負(fù)責(zé)。如果由于零件質(zhì)量(超差)是根本原因，那么應(yīng)：填寫PR&R通知供應(yīng)商： work with Supplie

20、r Quality to validate the corrections.同供應(yīng)商共同確認(rèn)糾正措施set up sorting operations and production will support sorting of material at the operation.采取篩選措施，制造應(yīng)支持在工位上的物料篩選 work with Group Leaders to validate countermeasures or containment.同工段長(zhǎng)共同確認(rèn)對(duì)策和遏制措施If part variation within specification is the root caus

21、e, then the RE will:如果確認(rèn)零件在規(guī)范內(nèi)，那么RE應(yīng)：work with the supplier and SQA to move the part back to the needed range within the specification同供應(yīng)商共同工作，SQA將零件返回到規(guī)范內(nèi)需要的范圍work with Quality Engineering to determine if an Engineering Change is required to provide irreversible corrective action同質(zhì)量工程師合作，確定是否需要工程更改

22、這種不能消除的糾正措施Stages 1&2Production1CorrectProcess?正確的工藝流程Rel. Engineer/SQA/SupplierPartsQuality?零件質(zhì)量Production2CorrectTool?正確的工具CorrectPart?正確的零件Production34 - Part Quality零件質(zhì)量12Diamonds 1-4 in Review鉆石1-4步回顧Diamonds 1-4 are for evaluating the stability of the process. 1-4步用來(lái)評(píng)價(jià)工藝過(guò)程的穩(wěn)定性O(shè)nce a problem ha

23、s been identified, the automatic response must be to immediately step thru diamonds 1-4.當(dāng)問(wèn)題被定義后，1-4步的負(fù)責(zé)人員就自動(dòng)確定下來(lái)It must become inherent in our problem solving thought process.這些步驟是問(wèn)題解決過(guò)程中固定的流程Responsibility職責(zé)Process ControlManagers過(guò)程控制負(fù)責(zé)人5aIs Engineering support required?是否需要工程的支持135a - Engineering

24、Filter 5a-工程過(guò)濾Is Engineering support required? 需要工程方面的支持嗎5a is a step to filter out and resolve less-complex issues before seeking help from Quality Engineering.5a是一步過(guò)濾出并將不復(fù)雜的問(wèn)題在尋求質(zhì)量工程幫助前解決The Process Control Manager is responsible for conducting initial studies prior to escalating the issue.過(guò)程控制負(fù)責(zé)人

25、負(fù)責(zé)在提升問(wèn)題前指導(dǎo)初始研究These studies may include but are not limited to:這些研究應(yīng)包括但不局限在:Problem Definition Tree 問(wèn)題定義樹(shù)5 Whys 5個(gè)為什么 Statistical Process Control 統(tǒng)計(jì)過(guò)程控制 Design of Experiment (DOE) 試驗(yàn)設(shè)計(jì)Shainin Techniques (quick & dirty) 技術(shù)(快速& 臟) If after the initial studies the cause of variation has not been determ

26、ined, the issue is referred to Product Engineering. The problem definition tree is the minimum exit criteria to go from Diamond 5a to 5b. 如果經(jīng)過(guò)初始研究，變差的產(chǎn)生原因還沒(méi)有確定，就需要產(chǎn)品工程的支持。問(wèn)題定義樹(shù)是從5a-5b的基本方法。QualityEngineering質(zhì)量工程5aProblem Solving Toolbox 問(wèn)題解決工具箱Project title: Poor adjustment of RR door panel 805-830L

27、eader: Pedro Aranda AlfaroSponsor:Juan Carlos LiceaArea: VAETCoach: Leonardo Chvez salcedoInitial date: oct-04-2002Final date: oct-29-2002Problem description:This month it was reported by the shipping lot in USA a problem of quality existed in the 805/830 vehicles. The problem is the poor adjustment

28、 in RR door panel.Projects statement:Find and improve the Red X that produce the poor adjustment in the RR door panel for the model 805/830 in Silao Assembly plant.Strategy:We initiated this project using the model to model strategy, because there was a good contrast and good leverage based on multi

29、-vari see pag 6.Measurement system:As measurement system a Force gage was used.This measurement system passed the isoplot with DR=13.6, DM=1.0 lbs, and DP=13.6 lbs (see page 4)Clue generation:Stage 1 shows that the Red X doesnt live in the process. The stage 2 shows that the Red X lives in the door

30、panel. The pair comparison shows that the door molding is the part with the best contrast.Statistical confirmation:Once we detected the Red X candidate, I decided to do a B vs C six pack trial, in order to confirm the door molding is the influence to make the customer satisfaction. The six pack pass

31、ed with 95% of confidence and end count of 6.Irreversible corrective action:To modified the flange 1.5 mm in length to keep a better position and avoid that the door panel take out of position.Improvements:Reduce warranty cost to repair the door panel caused by poor fit (loose) and eliminate the con

32、dition in 100% in vehicles 805/830 models. The amount of money from jul 01 to jul 02 was 11,084.77 USD.Lessons learned:We learned that is necessary looking other alternatives using other strategy when is not possible invest money but always focus to guarantee the customer enthusiasm, therefore this

33、project is an example of this.Executive Summary 執(zhí)行總結(jié)項(xiàng)目題目：右后門板調(diào)整不好(805/830車型)。領(lǐng)導(dǎo)； Pedro Adranda Alfaro發(fā)起人： Juan Carlos Licea區(qū)域： VAET教練： Leonardo Chavez salcedo起使日： 2002年10月4日截止日：2002年10月29日問(wèn)題描述： 本月收到報(bào)告，在美國(guó)有關(guān)于門飾板的質(zhì)量問(wèn)題，右后門飾板調(diào)整不好。(805/830型)項(xiàng)目綜述： 針對(duì)Lilao裝配廠805/830車型的右后門飾板，發(fā)現(xiàn)并解決其配合不好的問(wèn)題。策略： 我們起初應(yīng)用車型對(duì)車型策略，

34、因?yàn)槎嘬囍g有很好的對(duì)比度和平衡關(guān)系。(見(jiàn)見(jiàn)第6頁(yè))測(cè)量系統(tǒng)：用測(cè)力計(jì)作為測(cè)量系統(tǒng)。這種測(cè)量系統(tǒng)通過(guò)等量圖。 (DR=13.6, M=1.0lbs, P=13.6lbs見(jiàn)第4頁(yè) 線索產(chǎn)生： 階段1表明紅X不在過(guò)程中。階段2表明紅X產(chǎn)生在門飾板處。成對(duì)比較表明門型是成對(duì)比較點(diǎn)。統(tǒng)計(jì)確認(rèn)：一旦我們查到了候選的紅X，我們決定做B vs C六組數(shù)據(jù)比較，這是為了確認(rèn)門型影響客戶滿意度。用6對(duì)數(shù)據(jù)進(jìn)行比較具有95%的可信度和最大累加值為6.不可撤銷的糾正措施：為使門邊緣加長(zhǎng)1.5mm以保證正確的位置不偏離。改進(jìn)措施：減少保修費(fèi)用來(lái)修復(fù)由于配合不好產(chǎn)生的門飾板問(wèn)題，并且100%消除803/805車型的缺陷

35、。學(xué)到的經(jīng)驗(yàn)： 我們學(xué)到了 當(dāng)投資不會(huì)太多的情況下，用其它策略以尋求可選擇的方法解決問(wèn)題。但始終要關(guān)注顧客熱忱。此項(xiàng)目便是一個(gè)這樣的例子。Project Definition Tree/項(xiàng)目定義樹(shù)Problem characterization問(wèn)題描述Warranty condition/保修條件The problem is presented only in the rear door問(wèn)題只是在后側(cè)車門出現(xiàn)BASED: DISTRIBUTON LOT CAMPAINGCURRENT: 100 % door panel 805830 models loose目前狀態(tài)：805/830型車門飾板1

36、00%松動(dòng)。GOAL: eliminate 100% the poor fit.目標(biāo)：100%消除不良的配合Project statement項(xiàng)目綜述Need energy to release the trim door panel需要用力才能卸下門飾板Customer is calling the problem in both sides客戶現(xiàn)在對(duì)兩側(cè)都在抱怨Effort to release (lbs)/釋放力(磅)Frequency頻率CURRENT現(xiàn)有DESIRED希望Solution tree項(xiàng)目解決樹(shù)TARGET: Eliminate condition 100%目標(biāo)： 100

37、%消除現(xiàn)有問(wèn)題PASSED ISOPLOT DR=15.2 SEE PAG 4通過(guò)等量圖驗(yàn)證 DR=15.2 參見(jiàn)第4頁(yè)P(yáng)ASSED STAGE 1 SO THE RED X DOESNT LIVE IN THE PROCESS SEE PAG # 7.通過(guò)第一階段驗(yàn)證，因此紅X不在裝配過(guò)程中，參見(jiàn)第7頁(yè)。THE COMPONENT SEARCH STAGE 2 SHOWS THAT THE RED X DOES NOT LIVE IN THE TRIM DOOR PANEL SO LIVES IN THE REST OF THE DOOR PANEL. SEE PAG # 7./零部件分析階

38、段2顯示紅X不是由車門內(nèi)飾板造成的,所以應(yīng)是由車門板的其余部分引起的,見(jiàn)7頁(yè).PAIR COMPARISON SHOWS THAT THE DOOR PANEL MOLDING HAS THE CHARACTERISTIC THAT PRODUCE THE DIFFERENCE SEE PAG 9/ 配對(duì)對(duì)比顯示車門飾板飾件有造成差異的特征，參見(jiàn)第9頁(yè)THIS IS THE BEST STRATEGY BASED ON MULTIVARI SEE PAG 5.這是基于多重變換比較得出的最佳策略，參見(jiàn)第5頁(yè)。PASSED B vs C WHERE IT SHOWS THAT THE DOOR M

39、OLDING KEEP IN POSITION THE DOOR PANEL SEE PAG 10, BUT WE CHOICE OTHER CHARACTERISTIC THAT KEEP IN POSITION THE DOOR PANEL AND WITOUT INVEST MONEY SEE PAG 11 & 13.通過(guò)BC對(duì)比試驗(yàn)，顯示車門飾板飾件能夠使車門飾板保持正確位置，見(jiàn)第10頁(yè)。但是我們選擇能夠保證車門飾板位置并且不用增加投資的其它特性，參見(jiàn)第11和13頁(yè)。Frequency頻率GREEN Y RUN CHART SEE PAG 17/綠Y字流程圖參見(jiàn)第17頁(yè)。DESIRED

40、希望CURRENT現(xiàn)有BASED: DISTRIBUTON LOT CAMPAINGEffort to release (lbs)釋放力(磅)DM = 1.0 lbsDP = 13.6 lbsDR = 13.6Passed Isoplot IsoplotA Force gage was usedas the measurement system拉力計(jì)作為測(cè)量工具通過(guò)ISOPLOT評(píng)估POINT TOPOINTThere are no contrast in this strategy there are no difference.There is a good contrast but th

41、e leverage is not enough because we dont have tools to measure it.This strategy provide good contrast and the best leverage based on multi-vari chart see pag 6There are no contrast through the timeStrategy diagram PLANT TOPLANTMODEL TOMODELTRUCK TOTRUCKSIDE TOSIDESAME PANELSAME PLANTSAME MODELSAME T

42、RUCKThere is a contrast between truck to truck and good leverage but the contrast is not enough based on multi-vari see page 6.EVENT TOEVENTSAME POINTThere are no contrast in this strategy there are no difference event to event.策略圖事件對(duì)事件同一個(gè)點(diǎn)點(diǎn)對(duì)點(diǎn)同一塊扳同一側(cè)對(duì)同一側(cè)同一臺(tái)車車對(duì)車同一型號(hào)型號(hào)對(duì)型號(hào)同一個(gè)工廠工廠對(duì)工廠在這個(gè)對(duì)比中,無(wú)差異.在這個(gè)對(duì)比中,無(wú)差

43、異.在這個(gè)對(duì)比中,有差異.但無(wú)測(cè)量工具.在車與車的對(duì)比中,有差異.但不能滿足MULTI-VARI的要求.在這個(gè)對(duì)比中,有差異.且能滿足MULTI-VARI的要求.在這個(gè)對(duì)比中,無(wú)差異.Multi - variNOTE: This graphic shows that the best contrast is model to model.SideTruck1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31EFFORT TO TAKE OFF (lbs)R L R L R L R

44、L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R L R LCustomer satisfaction limitBOBWOWModelC C C C A A A A A A A A A A A S S S S S S S S S S S S S S S SNOTE: S: SUBURBAN 830 MODEL A: AVALANCHE 805 MODEL C: CADILLAC 806 MODEL注:SAC三種車型最好最壞顧客的滿意底線

45、注:此圖顯示出在型號(hào)與型號(hào)的對(duì)比中有最大的差異.松脫力(磅)Component searchNOTE: This graphic shows that the Red X suspect does not live in the process because it passed the stage #1. The stage 2 shows that the Red X suspect does not live in the seal window. So the Red X suspect lives in the molding door panel.Effort (lbs)BOBWO

46、WSTAGE 1STAGE 2第一階段第二階段最好最壞原狀態(tài)第一次拆裝第二次拆裝第三次拆裝門窗密封條門飾板門飾板飾條鉸鏈注:這個(gè)圖顯示因?yàn)橥ㄟ^(guò)了第一階段的試驗(yàn),所以RED X不是由操作造成.第二階段的試驗(yàn)顯示門窗密封條不是RED X,門飾板飾條是RED X要素查找規(guī)則Rule 1.There are complete separation between the BOB and WOW values.將最好和最壞的值完全分開(kāi)規(guī)則Rule 2. DYV1R設(shè)Where: R= RBOB + RWOW 2那么thenRBOB=1.9RWOW=1.2R= 1.9 + 1.2 = 3.1 = 1.55

47、. 2 2DY = YBOB - YWOW = 46.8 - 8.1 = 38.7 如果ifDY V1R那么then 38.7 (0.89) (1.55)所以so 38.7 1.38 所以滿足規(guī)則1和規(guī)則2的要求so passed Rule 1 and Rule 2通過(guò)問(wèn)題為每個(gè)單元設(shè)定判定極限Set decision limits for each unit by using the questions:DLBOB= YBOB + V2RDLWOW= YWOW + V2R那么Then udl = 48.83 DLBOB = 46.8 + 1.31 (1.55) = ldl = 44.77 u

48、dl = 10.13 DLWOW = 8.1 + 1.31 (1.55) = ldl = 6.07 結(jié)果ResultsPaired Comparison備注NOTE: We consider that the door panel molding is the Red X candidate in the pair comparison because is the only difference between panel to panel. In 805/830 vs 806 models.我們認(rèn)為門板裝飾件是可能的Red X, 因?yàn)樵谲囆?05/830 和 車型806對(duì)比后只有門板有差異

49、。WOWBOBDOOR MOLDINGRED X CANDIDATEPassed B vs C with 95% of confidence that the molding door panel is the Red X with complete separation and end count of 6.在 完全分離，End count 為5的情況下， 以95%的置信度通過(guò)B v S 表明門板裝飾件是Red XB vs C Six packB = 有門飾件的車Vehicles with door molding.C = 沒(méi)有飾件的車Vehicles without door moldin

50、g. Req: 置信度confidence = 95%Once confirmed that the RED X is living in the door panel molding, we decided to change our strategy from “model to model” to “truck to truck” because the door panel molding is unique for Cadillac models. In other words, find one characteristic in the same door panel 805/8

51、30 model that makes the difference, because there are some door panels that require almost 20 lbs to pulled out of it position from the door and there are others with less than 10 lbs to pulled out of it position; The customer enthusiasm limit is 18 lbs.this is enough to keep the door panel in posit

52、ion at low cost.一旦確定Red X 為門外板裝飾件，我們決定改變策略， 從車型到車型變到卡車到卡車，因?yàn)殚T外板裝飾件對(duì)Cadillac車型來(lái)說(shuō)是唯一的。換句話說(shuō)，同樣的門板裝在805/830 車型上卻產(chǎn)生了差異，原因是一些門板從門上拽出需要20磅的力，二另一些只需要小于10磅的力; 顧客的要求是18磅，這已經(jīng)足夠保證門板以較低的成本固定到相應(yīng)的位置。BOBWOWBIG CONTACT AREASMALL CONTACT AREA大間隙BIGGAP小間隙SMALLGAP門邊緣DOOR FLANGE門邊緣 DOOR FLANGEThe main characteristic that cause difference between the door panels 805/830 model is the poor contact of the flange on the door du