一种行星滚柱丝杠副的滚柱
By introducing elastic elements and limiting grooves into the planetary roller screw pair, the problem of the lack of limiting in the ball screw is solved, achieving stable transmission and improved accuracy, and simplifying the assembly process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FREEWON CHINA CO LTD
- Filing Date
- 2025-10-11
- Publication Date
- 2026-07-17
Smart Images
Figure CN224515833U_ABST
Abstract
Claims
1. A roller of a planetary roller screw pair, comprising: A nut body (1), wherein a lead screw (101) is provided inside the nut body (1), characterized in that it further includes: The transmission mechanism (2) is located inside the nut body (1). The transmission mechanism (2) includes two retaining rings (201) movably installed on the inner wall of the nut body (1). The retaining rings (201) have connecting holes (202) on their sides. A gear column (206) is movably installed on the inner wall of the connecting hole (202). The transmission mechanism (2) is used for the transmission of the nut body (1). The mounting mechanism (3) is located inside the nut body (1). The mounting mechanism (3) includes a moving block (302) located inside the nut body (1). A rolling ball (305) is provided on one side of the moving block (302). The mounting mechanism (3) is used to limit the installation of the gear column (206).
2. A roller for a planetary roller screw pair according to claim 1, characterized in that The connecting hole (202) is provided in multiple ways. The retaining ring (201) has a through hole (203) on its side. The inner wall of the nut body (1) has two slots (209) and a retaining spring (204) is installed on the inner wall of the slot (209).
3. A roller for a planetary roller screw pair according to claim 2, characterized in that The side of the snap ring (204) abuts against the side of the retaining ring (201). The nut body (1) is provided with multiple ball screws (205), and the two ends of the multiple ball screws (205) are respectively fixedly connected to multiple gear columns (206).
4. A roller according to claim 3, characterized in that The inner wall of the nut body (1) is integrally provided with a threaded groove (207) and two sets of toothed rings (208), and the inner wall of the threaded groove (207) is threadedly connected to the outer wall of the ball screw (205).
5. A roller for a planetary roller screw pair according to claim 4, characterized in that The outer wall of the gear column (206) meshes with the inner wall of the gear ring (208), and the outer wall of the ball screw (205) is threadedly connected to the outer wall of the screw rod (101).
6. A roller for a planetary roller screw pair according to claim 1, characterized in that The gear column (206) has multiple cavities (301) inside, and the inner wall of the cavity (301) is slidably connected to the side of the moving block (302).
7. A roller according to claim 6, characterized in that An elastic element (303) is fixedly installed on the side of the movable block (302), and one end of the elastic element (303) is fixedly connected to the inner wall of one side of the cavity (301).
8. A roller according to claim 7, characterized in that The movable block (302) has a movable groove (304) on its side. The inner wall of the movable groove (304) is movably connected to the outer wall of the rolling ball (305). One end of the outer wall of the rolling ball (305) extends through the inner wall of the cavity (301) to the outside of the gear column (206). The inner wall of the connecting hole (202) has a limiting groove (306). The outer wall of the rolling ball (305) is tumbledly connected to the inner wall of the limiting groove (306).