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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. Itconsistsofascrewspindle,anut,ballsandi ntegratedballreturnmechanismashowninFigu re. , configuration3 Thus,itisnecessarytochangetheirpathafter theyhavereachedacertainspotbyguidingthem ,oneafteranother,backtotheir startingpoint (formationofarecirculationpath).

The slides and spindle of the CNC machine are driven by stepper motors. STEPPER MOTOR –A digital signal is sent from the controller to the motor in the form of pulses, which will cause the motor to rotate through a specified angle, which causes the slide to …

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