文档介绍：oolsdesignedprimarilytodoturning,facingandboring,ools,andnonecandoitwithequalfacility・Becauselathesalsocandodrillingandreaming,,,headstockassembly,tailstockassembly,,,longitudinalways,innerandouter,arecontainedonthebed,-shapeforallfourways,whereasothersutilizeoneinvertedVandoneflatwayinoneorbothsets,Theyareprecision-uracyofalignmen匸Onmostmodernlathesthewayaresurface・hardenedtoresistwearandabrasion,・Theheadstockismountedinafoxedpositionontheinnerways,,itconsistsofahollowspindle,uratebearings,andasetoftransmissiongears-,usuallyinageometricratio,-uracyofalatheisgreatlydependentonthespindle,itisofheavyconstructionandmountedinheavybearings,,,essentially,,withameansforclampingtheentireassemblyinanydesiredlocation,Anuppercastingfitsontheloweroneandcanbemovedtransverselyuponit,onsometypeofkeyedways,