High speed standard planetary roller screw structure

Abstract

The utility model belongs to mechanical drive technical field, and disclose high -speed standard formula planetary roller screw structure, including screw rod, roller, nut, inner toothed ring, retainer and elastic baffle ring, the outer surface of screw rod is provided with triangle multi -head outer thread, the outside of roller is provided with ring tooth, the pitch of ring tooth is same with the screw pitch of screw rod, the both sides of ring tooth on roller are provided with gear, the inner chamber of nut is provided with oil storage groove, the inner surface of nut is processed with triangle multi -head inner thread that matches with screw rod and roller, the inner toothed ring sets up in the both end inner wall of nut, the inner toothed ring is connected with the gear of roller, the retainer is connected in the both end of roller, the lubricant that injects through oil injection hole can store in oil storage groove and even delivery to the meshing area of roller and screw rod, nut along helical oil channel, form continuous lubricating film, reduce the wear and heating that line contact friction leads to, promote high -speed operation stability.

Images