
!!!IMPORTANTINFORMATIONPLEASEREAD!!!
5.BASICREGARDINGGRINDING
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Pleasekeepinmind,thatgrindingbasicallyisaformofsofttreatment.Forgetting
optionalresults,pleasepayattentiontosomeelementaryrules.
Physicallygrindingisainteractionbetweenmaterialoftheworkpiece,thesuitable
abrasive,bindingoftheabrasive,gritsize,coolingliquidandfinalythewellmatched
feedingsizeaswellashaltandgrindingcycleswithoutfeeding.
Forachievingperfectprecisionitisbasiclyconsideredusingsmallfeedingsizes(4µ),
haltcyclesofminimum15to30secondsataspeedof10to20rpm,coolingliquid
directedtothecircularknife.
Itisabsolutelyrecommendedtofocusyourattentiontothegrindingcycleswithno
feeding.Thistimespanshouldlastalonguntilyouhearnomorenoisefromthegrinding
wheel.Thatgrantsthatthecompletefeedingsizehasbeenworkedoff.
Surelygrindingalsomeansscrubtreatmentbutthisiswithit'sparametersquitesobering
foranamateuringrinding.Scrubbingmeansverycoarsegrit,openbondingofthe
grindingwheel,feedingofmax.12µ,haltperiodsofmin.1030seconds,atknife
rotationof15to25rpmandalotofcoolingliquid.
Asmentionedabove,theseparametersareonlyaroughguidelinewhichgrantsthat
choosesparameterscanbeprocessedbythemachine.Finally,factorsasgrinding
mediumandmaterialhastobeconsideredandspeciallyselectedforeachapplication.
Material:HSS,highgradesteelhardened,steelhardenedetc.cansuccessfully
sharpenedwithacorundumorCBNgrindingwheel.
Byuseofresinoidbondabrasivematerial,thecoolingliquidshouldhavemin.10%oil
content,asthisabrasivebondproducesaconsiderablerubbingontheworkpiececausing
moreheat.
Material:Carbidesteelglass,ceramicscanbesharpenedsuccessfullybyadiamond
wheel.Aswrittenbefore,anadequateoilcontenthastobeconsidered.