质量功能展开QFD1261753

《质量功能展开QFD1261753》由会员分享，可在线阅读，更多相关《质量功能展开QFD1261753（37页珍藏版）》请在装配图网上搜索。

1、14质量功能展开质量功能展开2质量功能展开 将客户的要求及愿望(即客户的心声)转变为产品/服务的要求.识别并控制主要的制造过程参数.产品特性、过程参数及控制变量的文档关系。3为什么需要使用QFD?更短的开发时间 更少的工程更改 提高客户的满意度 更好的过程理解，取得更佳的执行成效 降低制造成本 将最好的产品及服务提供与客户 改善组织内沟通及分配任务执行4客户要客户要求及重求及重要度要度保证保证措施措施关系矩阵市场竞争性评估措施重要度相互矩阵5质量功能展开的四大主要阶段 质量屋 阶段 1:产品规划 质量屋 阶段 2:零件配置 质量屋 阶段 3:过程计划 质量屋 阶段 4:工艺/质量控制矩阵产品及

2、过程的规划阶段执行成效测量Cust Wants质量屋 1质量屋 2Perf Meas产品特性质量屋 4控制方法Proc Char质量屋 3Prod Char过程特性客户的心声客户的心声7质量功能展开 质量屋 1产品规划执行成效测量客户需求关系矩阵8客户需求 如挂墙垫如：没有任何的污点/油渍；适合一般市场要求；独立式挂靠；稳固于墙上；易于从墙上取下；容易打开；有防护；客户需求：由客户确定的一系列产品及服务的特 性.房屋 1 挂墙垫例子Performance Measures各项需求的重要度各项需求的重要度没有任何的污点/油渍适合一般市场要求独立式挂靠稳固于墙上易于从墙上取下容易打开有防护客户需求

3、10对各需求项进行重要度评分 据客户对各项要求的重要性，进行100分值范围内评分质量屋 1 挂墙垫 执行成效测量需求项的重要度评分需求项的重要度评分没有任何的污点/油渍15适合一般市场要求25独立式挂靠10稳固于墙上20易于从墙上取下15容易打开5有防护10客户需求12执行成效测量 这是一种对客户要求的产品执行情况的技术评估，进行测量及控制，并不是实际的测试。13挂墙垫的执行成效测量没有任何的污点/油渍 适合一般市场要求 独立式挂靠；稳固于墙上；以12类笔书写，后检查污渍情况以12类笔书写，后检查污渍情况检测靠背板的硬度检测稳挂于墙上的时间及其粘住墙上的程度客户要求执行成效测量质量屋 1 挂墙

4、垫执行成效测量Importance以12类笔书写，后检查污渍情况检测靠背板的硬度包装测试易掉落程度检测稳挂于墙上的时间粘住墙上的程度没有任何的污点/油渍15适合一般市场要求25独立式挂靠10稳固于墙上20易于从墙上取下15容易打开5有防护10客户要求15将客户要求与执行成效的测量结果联系起来执行成效的测量对客户于各个要求项的满意度的测算度如何？用如下的等级描述填写矩阵。:1 星期,3 中等的,9 强度大,空白 即指没有任何关质量屋 1 挂墙垫执行成效测量Importance以12类笔书写，后检查污渍情况检测靠背板的硬度包装测试易掉落程度检测稳挂于墙上的时间粘住墙上的程度没有任何的污点/油渍15

5、 3适合一般市场要求25 9独立式挂靠10 9稳固于墙上20 3 9 3 易于从墙上取下15 9容易打开5 9有防护10 1客户要求17Weighted Importance Weighted importance is a calculation used to prioritize the information in a QFD matrix=the sum of the products of the importance and relationship levels for each column in the QFD matrix.In House 1,the weighted

6、importance determines which Performance Measures are the greatest predictors of customer satisfaction.Weighted Importance for House 1Demanded Qualities(15 x 3)+(25 x 9)=270ImportanceWrite on with 12 pensBackboard stiffnessPackaging testPeel energyTime on Wall#of surfaces it sticks toSmear-Free153Com

7、mon Markers259Freestanding109Stays on Wall20393Easily Removed from Wall 159Opens Easily59Protects101Weighted Importance2709055195 18060Weighted%321162321719The Roof of the House Compares the effect that a change in one Performance Measure would have on the other Performance Measures.Does not interac

8、t with other portions of the house.Uses a scale of:strong positive,positive,none,negative,and strong negative.Roof of the House(House 1)ImportanceWrite on with 12 pensBackboard stiffnessPackaging testPeel energyTime on Wall#of surfaces it sticks toSmear-Free153Common Markers259Freestanding109Stays o

9、n Wall20393Easily Removed from Wall 159Opens Easily59Protects101+strong positive+positive-negative-strong negative-Improving peel energy may have a strong negative impact on the time the sheets stick on a wall.Desirable to decreaseDesirable to increaseNo preferenceDirection for improvement21Chart A-

10、1 The Quality TableCustomer Demands(What)QualityCharacteristics(How)A N Plan P B C DTotal Total%Company nowCompetitor xCompetitor y PlanRate ofimportanceCompany nowCompetitor xCompetitor yPlanRatio of improvementSales pointAbsolute weightDemanded WeightCorrelations:9=strong correlation 3=some correl

11、ation 1=possible correlationSales points=1.5,1.2,or 1D=A x B x CB=PN4242692074439613219171Easy to holdDoes not SmearPoint lastsDoes not roll105 465 339 219 1122 9 41 30 19 995”3pgs 3g 70%5 5pgs 2g 80%4”2.5p 4g 60%5.5”6pgs 2g 80%3 4 3 3 4 1 1 3 14 4 5 4 5 5 1 1.2 4.8 23 5 4 5 3 5 1.25 1.5 9.4 44 3 3

12、3 3 4 1.33 1 4 19 21.2 100LengthTime betweensharpeningLead dustgeneratedHexagonality22QFD House 2Product QualificationProductCharacteristicsPerformance MeasuresRelationshipMatrix23Product Characteristics Attributes that are observable and/or measurable on the final product.Examples:thickness,color,w

13、eight,size,raw material attributes24Product CharacteristicsWhat are the Product Characteristics of the Easel Pad?How much will changes in those characteristics affect the Performance Measures?Use a scale of 1 for weak,3 for medium and 9 for strong to rate the effects.House 2-Product Qualification Ma

14、trixImportanceType of adhesiveAmount of adhesiveThickness of coatingType of coatingType of paperPackaging MaterialsEasel BackingWrite on with 12 pens32 399Backboard stiffness11 119Packaging test6 9Peel energy2399 3Time on Wall213331#of surfaces it sticks to799 Weighted Importance333 333 170 288 320

15、54 168Weighted%2020101719310Performance MeasuresProduct CharacteristicsStrong 9Medium 3Weak 1None 0Performance Measures26QFD House 3Process PlanningProcessCharacteristicsProduct CharacteristicsRelationshipMatrix27Process Characteristics Stages in the process that affect the quality,composition,and c

16、haracteristics of the product.Observable while the process is running.Examples:Adhesive coating method,coating thickness,oven or web temperature,viscosity,melt temperature28UnwindPrinted PaperReleaseCoatingDryingOvenPrimerCoatingDrying OvenAdhesiveCoatingDryingOvenJumboWind-up Release CoatPrimerAdhe

17、siveCoatedJumboSheeting Cutting PaddingBackcardApplication PackagingBacksheetPaddingCompoundBackcardEasel Pad Process Flow29Process CharacteristicsWhat are the stages in the manufacturing process for Easel Pads?Which product characteristics are impacted by each stage?Use a level of 1,3,9 to rate the

18、 impactHouse 3-Process Planning MatrixProduct CharacteristicsProcess CharacteristicsImportanceUnwind TensionLAB Coating WeightAdhesive ViscocityAdh.Coating WeightDrying TemperatureSlitting/Laminating Packaging Unwind TensionType of adhesive20 993Amount of adhesive20 393 Thickness/quality of LAB coat

19、ing10 9 Type of LAB coating17 9 Type of paper193 Packaging materials3 19Easel Backing10 31Weighted Importance57 243 240 360 603337Weighted%6242335634Strong 9Medium 3Weak 1None 0Product Characteristics31QFD House 4Process Control PlanningControl MethodsProcess CharacteristicsRelationshipMatrix32Contr

20、ol Methods The variables in a process step that can be adjusted.Example:line speed,pump speed,oven temperature,nip pressure.33Control Methods In which key stage of the process would improvement efforts have the greatest impact on product quality?What adjustments are you able to make in this stage?Wh

21、at is the impact of each adjustment on the Product Characteristics?Adhesive Coating StageImportanceRatio of raw materialsMixing speedMixing timePump speedPump pressureLine speedLAB Coating Weight24993Adhesive Viscocity23911Adh.Coating Weight35 993Weighted Importance207 2323 531 531 177Weighted%14223

22、63612Process CharacteristicsControl MethodsStrong 9Medium 3Weak 1None 0House 4-Process Control PlanningProcess CharacteristicsTracing the Process back to the Customer39 Slitting Tension33Slitting Speed119Laminator Nip Pressure29Temp Z1-439Unwind Tension333Line Speed1099Pump Pressure3199Pump Speed311

23、Mixing Time11Mixing Speed19Ratio of Raw Materials126242335634House 3Unwind Tension LAB Coating WeightAdhesive ViscosityAdh Coating WeightDrying TempSlitting/LaminatingPackaging Unwind TensionHouse 4939Type of Adhesive20993939Amount of Adhesive20393313Thickness of Coating1099Type of Coating179911Type

24、 of Paper1939Packaging Materials31993Easel Backing10313211623217House 1Write on w/12 PensBackboard StiffnessPackaging TestPeel EnergyTime on Wall#of Surfaces it Sticks toHouse 2Smear Free153Common Markers259Freestanding109Stays on Wall20393Easily Removed from Wall 159Opens Easily59Protects10136Tips

25、for QFD Watch and visit the customer of the process-there are benefits to observing their product needs in their setting Sometimes the customers do not know what they need-Find out!The time used to implement QFD is minor compared to the time spent if it is not used QFD is flexible-Tailor it to your specific needs37QFD Pitfalls Too much“Chart focus”Lack of tools and training for QFD effort Too much internal focus Individuals are“Stuck on Tradition”Mentality of“Hurry up and get it DONE”Lack of commitment/time to processes Classify everything as important