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What is a CNC Machine? CNC : Computerised Numerical ...

WhatisaCNCM achine?CNC:ComputerisedNumericalControl( Computer+NumericalControl) Numericalcontrolisaprogrammableautomatio ninwhichprocessiscontrolledbyNumbers,Let ters,andsymbols. CNCM achiningisaprocessusedinthemanufacturing sectorthatinvolvestheuseofcomputerstocon trolmachinetoolslikelathes, Tomanufacturecomplexcurvedgeometriesin2 Dor3 Dwasextremelyexpensivebymechanicalmeans( whichusuallywouldrequirecomplexjigstocon trolthecuttermotions) MachiningcomponentswithhighRepeatability andPrecision Unmannedmachiningoperations Toimproveproductionplanningandtoincrease productivity However,sincethegrooveintheballscrewishe lical,itssteelballsrollalongthehelicalgr oove,and,then,theymaygooutoftheballnutun lesstheyarearrestedatacertainspot.

nut, balls and integrated ball return mechanism a shown in Figure . • The flanged nut is attached to the moving part of CNC machine tool. As the screw rotates, the nut translates the moving part along the guide ways. Ball screw / ball bearing screw / recirculating ballscrew Mechanism Ballscrew configuration 3

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