Failureofmechanicalpartsmeansthatpartsarepartiallyorcompletelylostindesignduringuse.Thepartiscompletelydestroyedandcannotcontinuetowork;ortheparthasbeenseriouslydamaged,andifitcontinuestowork,itwillloseitssafety;orifitcanworksafely,thelossofdesignaccuracywillbeinvalid.Inordertopreventthefailureofparts,itisnecessarytocarryoutfailureanalysisontheparts,thatis,byjudgingthefailureformoftheparts,determiningthefailuremechanismandcausesoftheparts,selectingmaterials,determiningareasonableprocessingroute,andproposingmeasurestopreventfailure.  1.Mechanicalpartsfailureform Thecommonfailuremodesofmechanicalpartscanbedividedintothreetypes:excessivedeformationfailure,fracturefailureandsurfacedamagefailure. TitaniumMachineryisthemainproductofthecompanywithrotarythimble,screwscrew,machinetoolspindle,shaftmachining,CNClathemachining,shankshankandcolletpost;TitaniumMachinery,professionalqualityassurance!Becauseofprofessionalism,itisexcellent!  (1)Excessivedeformationfailure:failureofthepartduetoexcessivedeformationexceedingtheallowablerange.Itmainlyincludesfailuremodessuchasexcessiveelasticdeformation,plasticdeformationandcreepoccurringathightemperatures. (2)Fracturefailure:aphenomenonofseparationintotwoormorepartsthatarenotconnectedduetoexcessivebearingloadorfatiguedamage.Fractureisthemostseriousformoffailure,includingductilefracturefailure,lowtemperaturebrittlefracturefailure,fatiguefracturefailure,creepfracturefailureandenvironmentalfailurefailure.  (3)Surfacedamagefailure:failurecausedbydamageordimensionalchangeofthesurfaceofthepartduetotherelativefrictionofthesurfaceorthecorrosionoftheenvironmentalmedium.Itmainlyincludesformssuchassurfacewearfailure,corrosionfailure,andsurfacefatiguefailure. Itshouldbepointedoutthatthesamemechanicalpartsoftenworknotonlyasafailuremode.However,thereisalwaysawayforthepartstofail.Thecoreproblemoffailureanalysisistofindoutthemainfailuremodes.  2.Reasonsforfailureofmechanicalparts Therearemanyfactorsthatcausethefailureofmechanicalparts,whicharecomplicatedandinvolvemanyaspectssuchasstructuraldesignofparts,materialselection,processingandmanufacturingofmaterials,assemblyandmaintenanceofproducts. (1)Unreasonabledesign:Mainlyreferstotheincorrectorunreasonablestructureandshapeofparts,suchasgapsinparts,smallarcangles,transitionzonesofdifferentshapes,etc.Ontheotherhand,itmeansthattheworkingconditionsandoverloadconditionsofthepartsareinsufficientlyestimated,resultingininsufficientactualworkingabilityoftheparts,resultinginearlyfailureoftheparts. (2)Unreasonablematerialselection:Inthedesign,theformofpartfailureisjudgedincorrectly,andtheselectedmaterialperformancecannotmeettheworkingconditions;theperformanceindexbasedonthematerialcannotreflecttheresistanceofthematerialtotheactualfailureform,andthewrongmaterialisselected;Thematerialusedisofpoorquality,thecompositionorperformanceisunqualified,andthedesignrequirementsarenotmet. (3)Unreasonableprocessingtechnology:improperprocessingofpartsmaycausevariousdefects,resultinginpartsfailingearlierinuse.Suchasoverheating,over-burningandbandedstructureduringhotworking;decarburization,deformationandcrackingoccurduringheattreatment;deeperknifemarks,grindingcracks,etc.occurduringcoldworking. (4)Improperinstallationandinstallation:theassemblyandinstallationprocessdoesnotmeetthetechnicalrequirements.Iftheinstallationistootight,tooloose,thealignmentisnotallowed,andthefixingisunstable,thepartsmaynotworkproperlyorfailprematurely;inaddition,Violationoftherulesduringoperation,overloading,overspeed,failuretorepairandmaintainontimewillalsocauseprematurefailureofparts.

Processabilityandstandardizationinthedesignofmechanicalparts: First,theprocessability Goodprocessabilitymeansthatthedesignedmechanicalpartscanbeproducedintheshortesttime,theleastamountoflaborandthelowestmanufacturingcost,andareeasytoassemble,disassembleandmaintain.Partsmanufacturinggenerallyincludesthestagesofblankproduction,cutting,heattreatmentandassembly.Eachstageisorganicallylinkedandmustbeconsideredindesign.TitaniumMachineryisthemainproductofthecompanywithmachinetoolspindle,rotaryejectorpin,screwscrew,shaftmachining,CNClathemachining,shankshankandcolletpost.Professionalqualityassurance!Thebasicrequirementsforcraftsmanshipwhendesigningmechanicalpartshavethefollowingaspects: 1.Thestructureofthepartsisadaptedtotheproductionconditionsandscale. Partsproducedinsingleorsmallbatchesshouldmakefulluseofexistingproductionconditions.Forexample,gearblankswithadiametergreaterthan600mmaredifficulttoforgewithgeneralforgingequipment,andcastingsorweldedpartsshouldbeused.Inthecaseofsingleorsmallbatchproduction,itisnotadvisabletousecastingsordieforgingstoavoidthecostofthemoldbeingtooexpensive(especiallydieforging)toincreasethecostofparts.Ifthereisnogrindingmachine,donotuseaheattreatmentmethodwithhightoothsurfacehardnessandhighheattreatmentdeformation. 2,theblankselectionisreasonable Theblanksofthepartsmaybecastings,forgings,rolledparts,weldedparts,stampings,andthelike.Theselectionoftheblankshouldtakeintoaccounttheproductionbatchsize,materialpropertiesandprocessingproperties.Forforgings,freeforgingisrecommendedforsingleorsmallbatchproduction,anddieforgingisrecommendedformassproduction.

First,bytheformofelectricalenergy 1.Therearetwoformsofelectricanddirectcurrent,sothemotorcanbedividedintotwomajorcategories:ACmotorandDCmotor. 2,AChassingle-phaseandthree-phasetwo,therearesingle-phaseACmotorandthree-phaseACmotor 3,thevoltagehasahighandlowvoltagelevel,sotherearealsohighvoltagemotorsandvoltagemotors.  Second,accordingtotheprincipleofclassification 1,accordingtothedifferenceinslip,canbedividedintosynchronousandasynchronousmotors 2.Synchronousmotorsaredifferentaccordingtothemagneticfield,andtherearepermanentmagnetsynchronousmotors,hysteresissynchronousmotorsandreluctancesynchronousmotors. 3.Asynchronousmotor,intheformofinduction,alsointheformofACcommutator.Inductiveformsincludethree-phaseasynchronousmotorsandshroudedasynchronousmotors.TheACcommutatormotorisalsodividedintoarepellermotorandaseriesmotor.  Third,accordingtothestructuretoclassify 1.Therotorstructureisdifferent.Therearewoundrotormotorandsquirrelcagerotormotor,aswellaspermanentmagnetrotormotor. 2.Accordingtothepositionoftherotorandstator,itcanbedividedintoinnerrotormotorandouterrotormotor. 3,accordingtowhetherthereisacarbonbrush,canbedividedintobrushmotorandbrushlessmotor 4,brushmotorhaspermanentmagnetbrushandelectromagneticDCmotor 5.Accordingtotheexcitationform,DCmotorscanbedividedintoothertypes:excitation,seriesexcitation,andshuntandcompoundexcitation. 6,accordingtodifferentmagneticmaterials,thereareferritemotors,rareearthpermanentmagnetsandAlNiCopermanentmagnetmotors  Fourth,accordingtothespeedofdifferentclassification 1,thespeedhashighandlow,sotherearehighspeedmotor,lowspeedmotor,constantspeedmotor,speedcontrolmotor, 2,accordingtothenumberofpoles,thereare2pole,4pole,8pole,16pole,32poleandothermotors 3,low-speedmotor,torquemotor,gearedmotor,directdrivemotor,clawpolesynchronousmotor