Domov technika Electric grinder

Electric grinder



Structuralfeatures

Theelectricgrinderismainlycomposedofabase,agrindingwheel,amotororotherpowersource,abracket,aprotectivecoverandawatersupply,etc.ThegrindingwheelissetonthebaseOnthetopsurfaceofthebase,thereisaspaceforaccommodatingthepowersourceinsidethebase.Thepowersourcedrivesareducer.Thereducerhasadriveshaftpassingthroughthetopsurfaceofthebaseforfixingthegrindingwheel.Thebasehasarecesscorrespondingtothebottomofthegrindingwheel.Thewatercatchmentarea,thewatercatchmentareaextendsoutwardstothefirstchannel,thewaterfeederislocatedabovethesideofthegrindingwheel,thewaterfeederhasaspaceforcontainingwater,andthewaterfeederhasawateroutletonthesidecorrespondingtothegrindingwheel.Theoveralltransmissionmechanismisverystreamlinedandperfect,whichmakesthegrindingprocessmoreconvenientandsmoothandimprovesthegrindingefficiencyoftheoverallgrinder.Thegrindingwheelisbrittleandhasahighspeed.Thesafetyoperationregulationsshouldbestrictlyfollowedwhenusingit.

Requirementsforuse

1.Thedirectionofrotationofthegrindermustbecorrect,sothatthegrindingdebriscanonlyflydownwardsfromthegrindingwheel.

2.Afterthegrinderisstarted,thegrindingshouldbecarriedoutafterthegrinderrotatessmoothly.Ifthegrinderjumpssignificantly,itshouldbeshutdownandrepairedintime.

3.Thereshouldbeadistanceof3mmbetweenthegrinderbracketandthegrindingwheeltopreventaccidentscausedbythepenetrationoftheworkpiece.

4.Whengrinding,youshouldstandonthesideofthegrinder,andtheforceshouldnotbeexcessive.

5.Accordingtothemanualofthegrindingwheel,selectthegrindingwheelthatmatchestherotationspeedofthemainshaftofthegrindingwheel.

6.Thenewlyobtainedgrindingwheelmusthaveafactorycertificateorcheckthetestmark.Beforeinstallation,iftherearedefectsinthequality,hardness,grainsizeandappearanceofthegrindingwheel,itcannotbeused.

7.Wheninstallingthegrindingwheel,theclearancebetweentheinnerholeofthegrindingwheelandthemainshaftshouldnotbetootight.Accordingtothetechnicalrequirementsofloosefit,itshouldgenerallybecontrolledbetween0.05?/FONT>0.10mm.

8.Flangesshouldbeinstalledonbothsidesofthegrindingwheel.Thediameteroftheflangeshouldnotbelessthanone-thirdofthediameterofthegrindingwheel.Agasketshouldbeplacedbetweenthegrindingwheelandtheflange.

9.Whentighteningthenut,useaspecialwrench,nottootight,anditisstrictlyforbiddentohammerwithhardobjectstopreventthegrindingwheelfrombeingbroken.

10.Afterthegrindingwheelisinstalled,theprotectivecover,baffleandbracketshouldbeinstalled.Thegapbetweenthebaffleandthebracketandthegrindingwheelshouldbekeptwithin1?/FONT>3mm,andshouldbeslightlylowerthanthecenterofthegrindingwheel.

11.Whenthenewlyinstalledgrindingwheelisstarted,donotbetoorushed,firstclickandcheck,andthenuseitafter5?/FONT>10minutesoftrialrotation.

12.Donotusetoomuchforceduringtheinitialgrindingtoavoidaccidentsduetounevenforceonthegrindingwheel.

13.Itisforbiddentogrindcopper,lead,woodandotherthingstopreventtheimpactofthegrindingwheel.

14.Whensharpeningtheknife,oneshouldstandonthesideofthegrinder.Twopersonsarenotallowedtosharpentheknifeonagrindingwheelatthesametime.

15.Thetoolswithalongsharpeningtimeshouldbecooledintimetopreventhothands.

16.Regularlytrimthebalanceofthegrindingwheelsurfacetokeepitingoodcondition.

17.Sharpenersshouldwearprotectiveglasses.

18.Thevacuumcleanermustbeintactandeffective.Ifafaultisfound,itshouldberepairedintime,orthesharpeningshouldbestopped.

OperatingRegulations

1.Theelectricgrindermusthaveasolidprotectivecoverandagoodgroundingwire,otherwiseitisprohibitedtouseit.

2.Beforeuse,youmustcarefullycheckwhetherthescrewsofeachpartareloose,whetherthegrindingwheeliscracked,andwhetherthemetalshellandpowercordareleaking.Ifyouhavetheaboveills,youmustrepairitbeforeyoucanuseit.

3.Whenusing,firstcarryoutanidlingtest,andoperateonlywhenthereisnoproblem.

4.Bringthenecessaryprotectiveequipmentatwork.Workersarenotallowedtofacethegrindingwheelandmuststandontheside.Thegrindermustbeheldfirmly,andtheworkpiecemustbeslowlytouched,andnoimpactorstrongpressureisallowed.Usethefrontofthegrindingwheelandprohibittheuseofthesideofthegrindingwheel.

5.Therotatinggrinderisnotallowedtobeplacedonthegroundatwill.Afterthegrinderstops,placeitinthedesignatedplace.Whentemporarilynotinuse,theswitchmustbeturnedoffandthepowersupplymustbecutoff.

6.Whenyoufindthatthepowercordisentangledandknotted,youmustbepatienttountieit.Donotusethewireorthegrindingwheeltoforcethenailtopullit.

7.Whenchangingthegrindingwheel,carefullycheckwhethertherearecracksordefectsinthegrindingwheel,andthecooperationshouldbeappropriate.Tightenthenutwithawrench,andthetightnessshouldbeappropriate.

8.Thegrindershouldbestoredinadryplace,anditisstrictlyforbiddentoputitinawateranddampplace.

9.Electricgrindersshouldbeoverhauledregularlybyadedicatedperson.

Grindingmachine

Grindingmachineisacommonequipmentusedtosharpenvariousknivesandtools.Itisalsousedforgrinding,deburringandcleaningofcommonsmallparts.Itismainlycomposedofabase,agrindingwheel,amotororotherpowersource,abracket,aprotectivecover,andawaterfeeder.Itcanbedividedintohandheldgrinders,verticalgrinders,suspendedgrinders,desktopgrinders,etc.

Troubleshooting

Themotordoesnotrotate(thereiselectromagneticsound)

Causes:(1)Thestartingcapacitorisdamaged;(2)Thethree-phasepowersupplyisopen;(3)Thepowerswitchisdamaged;(4)Thebearingisstuck;(5)Thewindingisburnedout

Remedy:(1)Replacethenewcapacitor;(2)Checkandrepairthecircuit;(3)Replacethepowerswitch;(4)Replacethebearing;(5)Repairthewinding

Themotordoesnotturn(noelectromagneticsound)

Causes:(1)Thepowerswitchisdamaged;(2)Thepowerfailure;(3)Windingburnedout

Remedy:(1)Replacethepowerswitch;(2)Waitforpowersupply;(3)Repairthewinding

Thegrindingwheelisfragileorwearstoofast

Causes:(1)Thetypeofthegrindingwheelisincorrect;(2)Thegrindingwheelisoutofdateorthequalityisnotgood;(3)Thebearingisdamaged;(4)Theinstallationisincorrect.

Remedy:(1)Replacethegrindingwheelcorrespondingtothetype;(2)Replacethequalifiedgrindingwheel;(3)Replacethebearing;(4)Installcorrectly

Thesoundisabnormal

Causes:(1)Thebearingisseverelyworn;(2)Incorrectinstallationofthegrindingwheel;(3)Correctphaseoperation;(4)Windingfailure

Troubleshootingmethod:(1)Replacethebearing;(2)Installthegrindingwheelcorrectly;(3)Checkandrepairthepowersupply;(4)Checkingandrepairingwindings

Windingsburned

Causes:(1)Statorandrotorscanbores;(2)Three-phasemotorrunninginopenphase;(3)Single-phaseThemotorisincorrectlyconnectedtothe380Vpowersupply

Remedy:(1)Replacethebearing;(2)Checkandrepairthepowersupply;(3)Checkandrepairthepowersupply

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