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来个更详细点的，但是是英文的。
Blanchardgrindingisusedtoquicklyremovestockfromonesideofalargepart.Typically,ferrousmetalsaresubjectedtotheBlanchardgrindingprocess,sincethepartisoftenheldinplacebyamagneticchuckasitisground.Itis,however,possibletouseBlanchardgrindingonnon-ferrousmetalsandevenplastics,butproductionratestendtobelowerandcostsarehigher(duetoaddedsetuptime).
Blanchardgrindingleavesaspecificfinishpatternonsurfaces,producedbythenatureoftheoperation,andofthemovementofgrindingtoolsacrossthesurface.Technicallyreferredtoasrotarysurfacegrinding,theprocessisidealforsurfacestoolargefordiscgrinding,suchasplatestock,dieblocksandrotarytables.Althoughitusesfarmorehorsepowerthanothergrindingservices,turnaroundtimeismuchfasterforcertainparts;theprocesscanbeusedsimultaneouslyonmultipleparts,aswell,alsoleadingtoreducedproductiontimesandexpense.
InaBlanchardgrindingmachine,thegrindingwheelismountedonaverticalspindle,andmovesinadirectioncountertotherotationofthemagneticchuck.Beforegrinding,surfacesshouldberelativelyeven,withoutanysignificantprotrusions.ThetolerancesprovidedbyBlanchardgrindingmachinescanbeaslittleasone-thousandthofaninch,withsimilarflatness.Tolerances,however,varybetweenmaterialsandworkpieces.DuetothedesignandoperationofaBlanchardgrindingmachine,itwillgrinddifferentworkpiecestoauniformsize,abenefitforextensiveproductionruns.
BlanchardgrindinggetsitsnamefromtheBlanchardMachineCompany,aspecialistinrotarygrindingmachines.Theprocessisanexcellentchoiceforapplicationsrequiringhigh-productionratesandmoderatefinishaccuracy. |
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发表于 2007-3-24 22:27:29
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