ISO 12272-1998 Aerospace - Nuts anchor self-locking floating two lug with incremental counterbore with MJ threads classifications 900 MPa (at ambient temperatur.pdf

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1、A Numroderfrence ISO12272:1998 (F) NORME INTERNATIONALE ISO 12272 Premiredition 19981215 Aronautiqueetespacecrousriver, freinageinterne,flottants,doublepatte, chambragetrsprofond,filetageMJ, classifications:900MPa(temprature ambiante)/235C,900MPa(temprature ambiante)/315Cet900MPa(temprature ambiante

2、)/425CDimensions AerospaceNuts,anchor,selflocking,floating,twolug,withincremental counterbore,withMJthreads,classifications: 900MPa (atambient temperature)/235C , 900MPa (atambienttemperature)/ 315C and 900MPa (atambienttemperature)/ 425C DimensionsISO12272:1998(F) ISO1998 Droitsdereproductionrservs

3、Saufprescriptiondiffrente,aucunepartiedecettepubli cationnepeuttrereproduiteniutilisesousquelqueformequecesoitetparaucunpro cd,lectroniqueoumcanique,ycomprislaphotocopieetlesmicrofilms,sanslaccord critdelditeur. Organisationinternationaledenormalisation Casepostale56 CH1211Genve20 Suisse Internet i

4、soiso.ch ImprimenSuisse ii Avantpropos LISO(Organisationinternationaledenormalisation)estunefdration mondialedorganismesnationauxdenormalisation(comitsmembresde lISO).LlaborationdesNormesinternationalesestengnralconfieaux comitstechniquesdelISO.Chaquecomitmembreintressparune tudealedroitdefaireparti

5、educomittechniquecrceteffet.Les organisationsinternationales,gouvernementalesetnongouvernementales, enliaisonaveclISOparticipentgalementauxtravaux.LISOcollabore troitementaveclaCommissionlectrotechniqueinternationale(CEI)en cequiconcernelanormalisationlectrotechnique. LesprojetsdeNormesinternational

6、esadoptsparlescomitstechniques sontsoumisauxcomitsmembrespourvote.Leurpublicationcomme Normesinternationalesrequiertlapprobationde75 %aumoinsdes comitsmembresvotants. LaNormeinternationaleISO12272atlaboreparlecomittechnique ISO/TC20,Aronautiqueetespace , souscomit SC4, lmentsde fixationpourconstruct

7、ionsarospatiales .ISO ISO12272:1998(F) iii Introduction LesdimensionsprescritesdanslaprsenteNormeinternationaleontt dfiniespourpermettrelaproductiondunepicesatisfaisantaux exigencesdelaspcificationdapprovisionnementISO5858.NORMEINTERNATIONALE ISO ISO12272:1998(F) 1 Aronautiqueetespacecrousriver,frei

8、nageinterne, flottants,doublepatte,chambragetrsprofond,filetageMJ, classifications:900MPa(tempratureambiante)/235C,900MPa (tempratureambiante)/315Cet900MPa(temprature ambiante)/425CDimensions 1Domainedapplication LaprsenteNormeinternationaleprescritlesdimensionsdescrousriver,freinageinterne,flottant

9、s,double patte,filetageMJ,declassifications:900MPa 1) /235 C 2) ,900MPa 1) /315 C 2) et900MPa 1) /425 C 2) . LaprsenteNormeinternationaleestapplicableuniquementllaborationdenormesdeproduitdestinesaux constructionsarospatiales. 2Rfrencesnormatives Lesnormessuivantescontiennentdesdispositionsqui,parsu

10、itedelarfrencequienestfaite,constituentdes dispositionsvalablespourlaprsenteNormeinternationale.Aumomentdelapublication,lesditionsindiques taientenvigueur.Toutenormeestsujettervisionetlespartiesprenantesdesaccordsfondssurlaprsente Normeinternationalesontinvitesrechercherlapossibilitdappliquerlesditi

11、onslesplusrcentesdesnormes indiquesciaprs.LesmembresdelaCEIetdelISOpossdentleregistredesNormesinternationalesenvigueur unmomentdonn. ISO58552:1988, AronautiqueetespaceFiletageMJPartie2:Dimensionslimitespourvisetcrous. ISO5858:1991, Aronautiqueetespacecrousfreinageinternedontlatempraturemaximaledutil

12、isationest infrieureougale425CSpcificationdapprovisionnement. ISO8788:1987, AronautiqueetespacelmentsdefixationTolrancesdeformeetdepositiondescrous. 3Configurationetdimensions Voirfigure1ettableau1.Lesdimensionsettolrancessontexprimesenmillimtres.Ellessappliquentaprs revtement(s)desurfaceventuel(s)m

13、aisavantlubrificationventuelle. _ 1)Correspondlacontrainteminimaleentractionquelcroupeutsupportertempratureambiante,sansrupturenicrique lorsquilestessayavecunevisdeclassedersistancesuprieure. 2)Tempraturemaximalequelcroupeutsupportersansaltrationpermanentedesescaractristiquesoriginelles,aprs retourl

14、atempratureambiante.Latempraturemaximaleestconditionneparlematriauouparletraitementdesurface.ISO12272:1998(F) ISO 2 NOTELestolrancesdeformeetdepositiondoiventtreconformescellesprescritesdanslISO8788.Lesdtailsde formenonprcisssontlaisssauchoixdufabricant. 1)Cesvaleurs,enmicromtres,sontvalablesavantre

15、vtement(s)desurfaceventuel(s).Lesvaleursnesappliquentpasau filetage,auxtrouspoinonnsetauxpartiesdcoupesdontltatdesurfaceseraceluiobtenuparlesmthodesnormalesde fabrication. 2)Marquesdoutilsadmisesdanscettezone. Figure1 Tableau1 Code de diamtre Filetage 1) EFG min. H min. J 2) max. K max. L max. M max

16、 N max. P min. R S +0,2 0 T max. Dbattement radial Z min. 050 MJ50,8 -4H6H 9,5 19 5,2 4 6 8 10 7,3 12 25,2 8,5 10,5 12,5 14,5 0,9 6,5 3 2,5 4,5 0,5 060 MJ61 -4H5H 11 22 6,2 4 6 8 10 8,7 13,5 29,2 9,4 11,4 13,4 15,4 0,9 7,5 3,5 2,5 4,6 0,5 080 MJ81 -4H5H 11 22 8,2 4 6 8 10 10,9 16 29,2 11,2 13,2 15,

17、2 17,2 1,1 9,5 3,5 3 5,5 0,5 1)ConformelISO58552.Danslazonedefreinage,lestolrancessontvalablesavantdformation. 2)Mesurauxanglesvifs(chanfrein)ouauxpointsdetangence(arrondi).ISO12272:1998(F) ISO ICS49.030.30 Descripteurs:industriearonautique,lmentdefixation,filetageMJ,crou,crouriver,crouautobloquant,croudoublepatte, crou flottant,crouavecchambrage,classification,spcificationdeforme,dimension. Prixbassur2pages

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