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ID:16297915
大小:332.50 KB
页数:12页
时间:2018-08-09
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1、平面磨床中英文外文翻译文献(文档含英文原文和申文翻译)SurfacegrindingSurfacegrindingisusedtoproduceasmoothfinishonflatsurfaces.Itisawidelyusedabrasivemachiningprocessinwhichaspinningwheelcoveredinroughparticles(grindingwheel)cutschipsofmetallicornonmetallicsubstancefromaworkpiece,makingafaceofitflatorsmooth.ProcessSurfacegr
2、indingisthemostcommonofthegrindingoperations.Itisafinishingprocessthatusesarotatingabrasivewheeltosmooththe刊atsurfaceofmetallicornonmetallicmaterialstogivethemamorerefinedlookortoattainadesiredsurfaceforafunctionalpurpose.Thesurfacegrinderiscomposedofanabrasivewheel,aworkholdingdeviceknownasachuck
3、,andareciprocatingtable.Thechuckholdsthematerialinplacewhileitisbeingworkedon.Itcandothisoneoftwoways:metallicpiecesareheldinplacebyamagneticchuck,whilenonmetallicpiecesareheldinplacebyvacuumormechanicalmeans.Factorstoconsiderinsurfacegrindingarethematerialofthegrindingwheelandthematerialofthepiec
4、ebeingworkedon.Typicalworkpiecematerialsincludecastironandminorsteel.Thesetwomaterialsdon'ttendtoclogthegrindingwheelwhilebeingprocessed.Othermaterialsarealuminum,stainlesssteel,brassandsomeplastics.Whengrindingathightemperatures,thematerialtendstobecomeweakenedandismoreinclinedtocorrode.Thiscanal
5、soresultinalossofmagnetisminmaterialswherethisisapplicable.Thetolerancesthatarenormallyachievedwithgrindingare+2x10-4inchesforagrindingaflatmaterial,and+3x10-4inchesforaparallelsurface.Thegrindingwheelisnotlimitedtojustacylindricalshape,butcanhaveamyriadofoptionsthatareusefulintransferringdifferen
6、tdesignstotheobjectbeingworkedon.Whensurfacegrindinganobject,onemustkeepinmindthattheshapeofthewheelwillbetransferredtothematerialoftheobjectlikeamirrorimage.Sparkoutisatermusedwhenprecisionvaluesaresoughtandliterallymeans"untilthesparksareout(nomore)".Itinvolvespassingtheworkpieceunderthewheel,wi
7、thoutresettingthedepthofcut,morethanonceandgenerallymultipletimes.Thisensuresthatanyinconsistenciesinthemachineorworkpieceareeliminated.EquipmentSurfaceGrinderwithelectromagneticchuck,insetshowsaManualmagneticchu
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