Ball screw bearing
By introducing an external circulation inverter and grease additive structure into the ball screw bearing, the grease is easily filled and replaced, solving the problem of difficulty in regular lubricant replacement and extending the service life of the equipment.
Patent Information
- Application Number
- CN202421172534.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-05-28
AI Technical Summary
During the use of existing ball screw bearings, there are difficulties in the regular replacement and quality of lubricant, which affects its normal operation and service life.
A ball screw bearing including an external circulation inverter and a grease additive structure is designed. The balls are contaminated with grease during the external circulation inverter to achieve convenient filling and replacement of grease.
It effectively solves the convenience of lubricant replacement and ensures the normal operation and service life of ball screw bearings.
Smart Images
Figure CN222254730U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a bearing, in particular to a ball screw bearing. Background Art
[0002] Ball screw bearings are installed on the screw rod to make linear motion under the action of rotary motion. They have high transmission efficiency and low friction, and are widely used in machine tools, mechanical equipment, automated production lines and other fields.
[0003] Maintenance of ball screw bearings is the key to ensure their normal operation and extend their service life. Lubrication of ball screws is an important part of maintenance. Lubricants should be replaced regularly to maintain the suitability and quality of the lubricants. Utility Model Content
[0004] The utility model aims to provide a ball screw bearing to solve the above technical problems.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a ball screw bearing, including a nut, an axial hole, a ball groove, a ball, an external circulation reverser, a grease adding structure, a support plate, and a limit hole. An axial hole is opened in the middle of the front and rear ends of the nut, the ball groove is opened at the side end of the axial hole, the ball is installed in the ball groove, the external circulation reverser is connected to the front and rear parts of the ball groove through the top end of the nut, the grease adding structure is installed in the middle of the external circulation reverser, the support plate is installed at the rear of the side end of the nut, and the limit hole is opened in the support plate.
[0006] On the basis of the above technical scheme, the grease adding structure includes a support block, a storage barrel, a mounting hole, an adding interface, a sliding hole, an adding tube, and a pressure plate. The support block is fixed to the middle part of the top of the nut, the storage barrel is fixed to the top of the support block, the mounting hole is opened at the front and rear ends of the bottom of the storage barrel, and the external circulation reverser is connected to the storage barrel through the mounting hole, the adding interface is opened at the bottom of the mounting hole, and the external circulation reverser is connected to the inside of the storage barrel through the adding interface, the sliding hole is opened at the top of the storage barrel, the side end of the adding tube is slidably connected to the sliding hole, the pressure plate is slidably connected to the inside of the storage barrel, and the pressure plate is plugged into the bottom of the adding tube.
[0007] Based on the above technical solution, the balls are lubricated by the grease discharged from the adding interface when they are reversed through the external circulation reverser.
[0008] Compared with the prior art, the utility model has the following advantages: the utility model installs a grease adding structure on the external circulation reverser of the external circulation ball screw bearing, and realizes convenient filling and replacement of grease during the circulation of the ball through the external circulation reverser. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 This is a schematic diagram of the appearance structure of the utility model.
[0010] Figure 2 This is a schematic diagram of the grease adding structure of the utility model.
[0011] Figure 3 This is a cross-sectional view of the structure of the grease added to the utility model.
[0012] In the figure: 1. nut, 2. shaft hole, 3. ball groove, 4. ball, 5. external circulation reverser, 6. grease adding structure, 7. support plate, 8. limit hole, 9. support block, 10. storage barrel, 11. mounting hole, 12. adding interface, 13. sliding hole, 14. adding pipe, 15. pressure plate. DETAILED DESCRIPTION
[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0014] like Figures 1 to 3 As shown, a ball screw bearing comprises a nut 1, an axial hole 2, a ball groove 3, a ball 4, an external circulation reverser 5, a grease adding structure 6, a support plate 7, and a limiting hole 8. The nut 1 has an axial hole 2 in the middle of both ends, the ball groove 3 is opened at the side end of the axial hole 2, the ball 4 is installed in the ball groove 3, the external circulation reverser 5 is connected to the front and rear parts of the ball groove 3 through the top end of the nut 1, the grease adding structure 6 is installed in the middle of the external circulation reverser 5, the support plate 7 is installed at the rear part of the side end of the nut 1, and the limiting hole 8 is opened in the support plate 7.
[0015] The grease adding structure 6 includes a support block 9, a storage barrel 10, a mounting hole 11, an adding interface 12, a sliding hole 13, an adding tube 14, and a pressing plate 15. The support block 9 is fixed to the middle of the top of the nut 1, and the storage barrel 10 is fixed to the top of the support block 9. The mounting hole 11 is opened at the front and rear ends of the bottom of the storage barrel 10, and the external circulation reverser 5 is connected to the storage barrel 10 through the mounting hole 11. The adding interface 12 is opened at the bottom of the mounting hole 11, and the external circulation reverser 5 is connected to the inside of the storage barrel 10 through the adding interface 12. The sliding hole 13 is opened at the top of the storage barrel 10, and the side end of the adding tube 14 is slidably connected to the sliding hole 13. The pressing plate 15 is slidably connected to the inside of the storage barrel 10, and the pressing plate 15 is inserted into the bottom of the adding tube 14.
[0016] When the ball 4 is reversed through the external circulation reverser 5, it is lubricated by the grease discharged from the adding interface 12.
[0017] The working principle of the utility model is as follows: the grease is poured into the storage barrel 10 through the adding tube 14, the nut 1 is installed on the screw through the axial hole 2, when the screw rotates, the support plate 7 is held by the limiting hole 8, the ball 4 rolls in the screw and the ball groove 3, and the steering rear circulation is realized through the external circulation reverser 5. When grease needs to be added, the adding tube 14 presses the pressure plate 15 downward along the sliding hole 13, and the pressure plate 15 presses the grease in the storage barrel 10 into the external circulation reverser 5 through the adding interface 12, and the ball 4 is contaminated with grease when passing through, so that the grease is conveniently filled and replaced.
[0018] The above is a preferred embodiment of the present invention. For ordinary technicians in this field, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, changes, modifications, substitutions and variations made to the implementation methods are still within the scope of protection of the present invention.
Claims
1. A ball screw bearing, comprising a nut (1), a shaft hole (2), a ball groove (3), a ball (4), an external circulation reverser (5), a grease adding structure (6), a support plate (7), and a limit hole (8), characterized in that: The nut (1) is provided with an axial hole (2) in the middle of both front and rear ends, the ball groove (3) is opened at the side end of the axial hole (2), the ball (4) is installed in the ball groove (3), the external circulation reverser (5) is connected to the front and rear parts of the ball groove (3) through the top end of the nut (1), the grease adding structure (6) is installed in the middle of the external circulation reverser (5), the support plate (7) is installed at the rear of the side end of the nut (1), and the limit hole (8) is opened in the support plate (7).
2. A ball screw bearing according to claim 1, characterized in that: The grease adding structure (6) comprises a support block (9), a storage barrel (10), a mounting hole (11), an adding interface (12), a sliding hole (13), an adding tube (14), and a pressing plate (15). The support block (9) is fixed to the middle of the top end of the nut (1), the storage barrel (10) is fixed to the top end of the support block (9), the mounting hole (11) is opened at the front and rear ends of the bottom of the storage barrel (10), and the external circulation reverser (5) is connected to the storage barrel (10) through the mounting hole (11), the adding interface (12) is opened at the bottom of the mounting hole (11), and the external circulation reverser (5) is connected to the inside of the storage barrel (10) through the adding interface (12), the sliding hole (13) is opened at the top end of the storage barrel (10), the side end of the adding tube (14) is slidably connected to the sliding hole (13), the pressing plate (15) is slidably connected to the inside of the storage barrel (10), and the pressing plate (15) is plugged into the bottom of the adding tube (14).
3. A ball screw bearing according to claim 1, characterized in that: When the ball (4) is reversed through the external circulation reverser (5), it is lubricated by the grease discharged from the addition interface (12).