7. PRINCIPLE OF WORKING
. SERVO COUPLED WITH SPINDLE SHAFT.
. MECHANICAL CALCULATION IS CONVERTED INTO
EQUIVALENT FACTOR .
. PLC CALCULATES PULSES PER MM
. SPEED COMMAND TO THE SERVO IS GIVEN BY PLC.
. PLC CAN RUN THE SPINDLE AT VERY HIGH CONTROLLED
SPEED
BY CONTROLLING THE FREQUENCY OF PULSE TRAIN.
. HENCE A DESIRED CONTROLLED SPEED IS ACHIEVED AT
ANY POINT OF TIME.