Roller screw having plural circulating devices cooperating with plural helical grooves
AssigneeHiwin Technologies Corp.
InventorWen-Chia Wu
Life of this patent
Estimating the term…
Abstract
A roller screw having plural circulating devices cooperating with plural helical grooves comprises a screw, a nut, plural rollers and circulating devices. The screw is provided in a surface with at least two helical grooves. The nut is provided with helical grooves opposite to the screw and receiving holes in a peripheral wall thereof, and each receiving hole is provided with a fixing groove at each of two ends thereof. The rollers are arranged in the helical grooves of the screw and the nut. The circulating devices have the same number of the helical grooves of the screw, and each circulating device includes an opening at each of two ends thereof and a passage between the two openings.
Claims4
A roller screw having plural circulating devices cooperating with plural helical grooves, comprising:
- a screw being provided in a surface thereof with at least two helical grooves;
- a nut being provided with helical grooves opposite to the screw and further axially provided with receiving holes in a peripheral wall, the receiving holes and the helical grooves of the nut being equal in number, and each receiving hole having a fixing groove at each of two ends thereof;
- plural rollers being respectively arranged in the helical grooves of the screw and the nut;
- circulating devices being equal in number to the helical grooves of the screw, each circulating device having an opening at each of two ends thereof and a passage between the two openings, the circulating devices being installed in the respective receiving holes and fixing grooves of the nut;
- and
- the two openings of the respective circulating devices, which are connected to the helical grooves, are connected to different helical grooves of the nut, so that the helical grooves of the nut form a single circulation path for the rollers through the respective circulating devices.
Dependencies are inferred from the claim text.