OT CONTROLLING METHOD FOR MACHINE'S Z AXIS

摘要

PURPOSE: A method for controlling OT with respect to a variable Z-axis of a machine tool is provided to prevent the damage of the device or the safety accident in a human body by observing a situation automatically compensating the OT with respect to the Z-axis through an operator. CONSTITUTION: A method for controlling OT with respect to a variable Z-axis of a machine tool comprises the steps of: calculating the value (A) of a first step, a detected step value (B), and the total distance (TC) between steps through a gap (C) between the steps (S5); calculating a real full stroke (β) based on the offset (OS) of a tool and a full stroke value (α) of the Z-axis (S8); comparing the real full stroke with the total distance between the steps; and transmitting by correcting the OT value. [Reference numerals] (S1) Command a Z-axis to move; (S12,S15) Correct an OT value; (S13) Initially commanded moving amount; (S16) Transmit corrected moving amount; (S17) Move the Z-axis; (S18) Complete to move the Z-axis; (S9) Distinguish the OT of the Z-axis