The present application relates to the technical field of
industrial robot spare parts, in particular to a mute type ball nut
noise reduction structure for an
industrial robot and a method thereof, comprising a mute sleeve set on the outside of a lead screw, the mute sleeve comprising a nut, a
bushing mounted on the nut, and a plurality of balls. The mute sleeve is further provided with a filler, the filler comprising a filler tube with a
grease storage cavity inside, and a pair of lifting rings, a rotating plug, and an
extrusion part coaxially arranged inside the filler from top to bottom. The present application applies continuous pressure on the lubricating
grease in the
grease storage cavity through the
extrusion part, cooperates with the material passage gap in the convex rod which is in contact with the thread groove of the lead screw, realizes continuous and uniform
coating of the lubricating grease to the thread groove of the lead screw, and automatically brings the lubricating grease to the ball load track and the circulation channel with the rotation of the lead screw and the movement of the nut, realizes continuous self-
lubrication without manual intervention, and effectively reduces the friction
noise caused by insufficient
lubrication.