The utility model relates to
machine tool guide rail technical field discloses a
numerical control machine tool guide rail subassembly, including the bottom plate, the bottom plate is fixedly connected with the guide rail, the guide rail is connected with the sliding block of sliding, the fixed plate is fixedly connected on the sliding block, the lower surface of fixed plate is equipped with the box, in the utility model, when the fixed plate drives the sliding block to slide on the guide rail, if the insufficient lubricating oil on the guide rail leads to the friction of sliding block and gyro wheel and increases, once the friction of gyro wheel exceeds the threshold value of
torsion spring setting, gyro wheel will rotate on the fixed block and drive the valve ball to rotate in the conveying
pipe, when the through hole on the valve ball communicates with the conveying
pipe inner chamber, the pressure of
air pump will press the lubricating oil in the box into the conveying
pipe, and through the cavity and the through hole in the sliding block, and the lubricating oil flows out to the guide rail, this process realizes the instant replenishment of lubricating oil, effectively prevents the guide rail and the excessive wear of sliding block due to the excessive friction, thereby prolongs the service life significantly.