質(zhì)量控制與質(zhì)量管理：House of quality

1、Quality Function DeploymentHouse of Quality - ApproachDetermination ofcustomer requirementsSelection of importantquality characteristicsAssessing the correlationbetween production requirementsand quality characteristicsRanking thequality characteristicsCorrelationsbetween differentquality characteri

2、sticsDerivate new target valuesand other figures162354What?How?How much?Why?Define customer requirements Customer requirementsThe exterior mirror shouldnt have dead corners.The exterior mirror adjustment should function well.The exterior mirror should look good.The exterior mirror shouldnt vibrate.T

3、he exterior mirror shouldn be quite.The exterior mirror should be long lasting.The dazzling by night drives should be low.Comparison in pairs (Importance, Step 2)no dead cornersdoes not dazzlefunctions wellfunctions wellquietlong life/ lastinglooks goodSumQFD-Importanceno dead corners00001011does no

4、t dazzle20122076functions well2222211110does not vibrate21022076quiet20002044long life/ lasting10000011looks good2212221110Quality characteristicsQuality characteristics:nadjustment speed (horizontal and vertical)nmax. vibration amplitudenactual wind noise at 100km/hnnoise of adjusting motornreflect

5、ion degreenvisibility angle (horizontal and vertical)ndead corner (angle)nenlargementndistortion (enlargement ratio, horizontal and vertical)ndesign assesment (public interview)noverhang (vehicle width)ntotal weight (vehicle weight)nair resistance (total air resistance of vehicle)Fill out the HoQ wi

6、th customer requirements and quality charcteristicsDirection of Improvementreflection degreevisibility angledead corner (angle)distortionenlargementmax. vibration amplitudeadjustment speednoise of adjusting motorstability of adjustmentactual wind noisedesignoverhangair resistanceweight12345678910111

7、21314functions well10looks good10does not dazzle6does not vibrate6quiet4no dead corners1long life/ lasting1Absolute importanceRelative importanceImportance (1.5)Design characteristics./.ImportanceFunctional characteristicsVisual ability AdjustmentQuality characteristics(How?)Customerrequirements(Wha

8、t?)maximumminimumneutralstrongmediumweakFill out the correlation matrixDirection of Improvementreflection degreevisibility angledead corner (angle)distortionenlargementmax. vibration amplitudeadjustment speednoise of adjusting motorstability of adjustmentactual wind noisedesignoverhangair resistance

9、weight1234567891011121314functions well10looks good10does not dazzle6does not vibrate6quiet4no dead corners1long life/ lasting1Absolute importanceRelative importanceImportance (1.5)Design characteristics./.ImportanceFunctional characteristicsVisual abilityAdjustQuality characteristics(How?)Customerr

10、equirements(What?)maximumminimumneutralstrongmediumweak991911193126908466645421133Competitive and Technical evaluation123451234567891011121314101066411Target valuesvariation with sensors48 degree2 degree0.1 %1.3 %0.08 mm5 degree/ s47 dBA0.2 degree43 dBA7 to 1030 mm3 % from total weight.950 g19919111

11、931269084666454211331,1011,15 11,15 1,3511,40 15,44 11,03 10,298,097,846,622,571,590,371.04.04.01.04.05.04.04.03.03.03.01.01.01.0./.Company BOur CompanyOur CompanyCompany BTechnicalevaluationDirection of Improvementreflection degreevisibility angledead corner (angle)distortionenlargementmax. vibrati

12、on amplitudeadjustment speednoise of adjusting motorstability of adjustactual wind noisedesignoverhangair resistanceweightfunctions welllooks gooddoes not dazzledoes not vibratequietno dead cornerslong life/ lastingAbsolute importanceRelative importanceImportance (1.5)Design characteristicsImportanc

13、eFunctional characteristicsVisual abilityAdjustmentQuality characteristics(How?)Customerrequirements(What?)5432Competitive evaluation1234512345678910111213141 01 066411T a r g e t v a lu e svariation with sensors48 degree2 degree0.1 %1.3 %0.08 mm5 degree/ s47 dBA0.2 degree43 dBA7 to 1030 mm3 % from

14、total weight.950 g199 19 11 19 31 2 69 08 46 66 45 42 11 331 , 1 01 1 , 1 51 1 , 1 51 , 3 51 1 , 4 01 5 , 4 41 1 , 0 31 0 , 2 98 , 0 97 , 8 46 , 6 22 , 5 71 , 5 90 , 3 71 . 04 . 04 . 01 . 04 . 05 . 04 . 04 . 03 . 03 . 03 . 01 . 01 . 01 . 0. / .Company BOur CompanyO u r C o m p a n yC o m p a n y BTe

15、chnicalevaluationD ir e c t io n o f I m p r o v e m e n treflection degreevisibility angledead corner (angle)distortionenlargementmax. vibration amplitudeadjustment speednoise of adjusting motorstability of adjustactual wind noisedesignoverhangair resistanceweightf u n c t io n s w e lllo o k s g o

16、 o dd o e s n o t d a z z led o e s n o t v ib r a t eq u ie tn o d e a d c o r n e r slo n g lif e / la s t in gA b s o lu t e im p o r t a n c eR e la t iv e im p o r t a n c eI m p o r t a n c e ( 1 . . . 5 )D e s ig n c h a r a c t e r is t ic sImportanceF u n c t io n a l c h a r a c t e r is t

17、 ic sV is u a l a b ilit yA d ju s t m e n tQ u a lit y c h a r a c t e r is t ic s( H o w ? )C u s t o m e rr e q u ir e m e n t s( W h a t ? )5432C o m p e t it iv e e v a lu a t io nSeveral problems unsolved Cheaper price and better quality Price-worthiness, customer grouping, customer needs Tech

18、nical evaluation and competitive evaluation: Kano model Improving direction: QC contradiction Four phase QFDniiimiiimiiimiiiYTEIXXXCEI112/1121,Quality and performance requirementslow fuel consumptionTIMEdynamic navigation systemThe requirement for characteristics which exciteairbagsFulfilment ofrequ

19、irementsBasic requirementsDeployment of HoQ - component planningNumberImportance (1.5)surface of bearing seatend stop seat, inputfitting key width, inputfitting key width, outputfitting key depthsurface of gear wheel seattotal lengthlength of fitting key wayfitting of bearing seat1reflection degree2

20、2visibility angle13dead corner (angle)14enlargement25max. vibration amplitude56adjustment speed37noise of adjusting motor38stability of adjust3Absolute importance7227555442302772Importance (1.5)551143225Quality characteristics of the shaft (How?)Quality characteristics of the mirror (What?)Deployeme

21、nt - Process OperationsImportance (1.5)cuttingturninggrindingmillingsurface of bearing seat5end stop seat, input2fitting key width, input1fitting key width, output1fitting key depth4surface of gear wheel seat3total length2length of fitting key way2fitting of bearing seat5Importance of process steps1

22、812313587Process parameter (How?)Qualitycharacteristics(What?)Deployement of HoQ - Process designrevolutions per minutefoliage typerest die lifefeedrevolutions per minutescutting depthfeedtool radiustime of setupdeliveringfeedWS-revolutions p. m.rest die lifedeliveringfeed521143225Parameter valueProcess abilityImportance of parameter186667761597979913544484416grindingmillingImportancecuttingturningProcess parameter (How?)Quality characteristics(What?)surface of bearing seatend stop seat, inputfitting key width, inputfitting key w