A CNC z-axis lead screw has2 threads/cm and is directly driven by a servo motor. Its encoder emits100 pulses/revolution. Find control resolution in micrometres.
Assuming the stated single-start screw, lead equals pitch=1/2 cm/rev=5 mm/rev. Each encoder pulse represents5/100=0.05 mm=50 μm. No transmission factor is needed because the motor and screw are directly coupled.
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