Main spindle rotation deceleration device of machine tool and deceleration method thereof

摘要

According to the present invention, an amount of electric current supplied from an electric power supply unit to an electromagnet is controlled in accordance with the magnitude of rotational kinetic energy of a main shaft through an electromagnet installed to transmit a magnetic force for reducing the rotational kinetic energy of the main shaft to the main shaft disk, The main spindle rotation of the machine tool which can reduce the main spindle rotation deceleration time by using the generated magnetic damping effect to shorten the machining cycle of the workpiece and thereby improve the productivity and minimize the amount of current required for decelerating the main spindle, A decelerating device and a spindle rotation decelerating method.