Ball screw supporting bearing

Abstract

The utility model relates to the field of supporting bearings, and discloses a ball screw supporting bearing which comprises a bearing inner shell, a bearing outer shell and a screw, the bearing outer shell is rotatably arranged in the bearing inner shell, a circular hole is formed in the center point of the bearing outer shell, the screw is inserted in the bearing outer shell in a penetrating mode, and the ball screw is arranged in the bearing outer shell. The ball screw supporting bearing comprises a bearing outer shell and a bearing inner shell, a lead screw is locked and fixed in the bearing outer shell through a threaded limiting block, two side face protrusions with screw holes are integrally formed on the outer side wall face of the bearing inner shell, the bearing inner shell can be fixedly installed on the wall face through screws in a matched mode, and an oiling assembly is arranged on the top plane of the bearing inner shell. And lubricating oil can be added between the bearing inner shell and the bearing outer shell through the oil adding assembly, grease adding is facilitated, and maintenance is facilitated.

Description

Technical Field

[0001] The utility model relates to the field of supporting bearings, in particular to a ball screw supporting bearing. Background Art

[0002] As precision transmission components, ball screws are widely used in machinery manufacturing, automation equipment, and precision instruments. They achieve efficient, low-friction linear transmission through the rolling motion of balls between the screw and nut. However, during ball screw operation, the performance of the supporting bearings directly impacts the accuracy, rigidity, and service life of the entire transmission system.

[0003] Currently, there are a variety of ball screw support bearing designs on the market. These designs, through specific structural designs, achieve stable support for the bearing on the ball screw, improving transmission accuracy and rigidity. However, these solutions only address basic bearing support issues and fail to fully consider the bearing's long-term lubrication, maintenance, and ease of installation requirements.

[0004] Traditional bearing designs often rely on regular manual lubrication, which not only increases maintenance costs but also makes it difficult to ensure uniform and timely lubrication, which can easily lead to increased bearing wear and shortened service life. For this reason, we propose a ball screw support bearing. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the utility model provides a ball screw support bearing to solve the above-mentioned problems.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ball screw support bearing, comprising a bearing inner shell, a bearing outer shell and a screw, the bearing outer shell being rotatably arranged inside the bearing inner shell, the center point of the bearing outer shell having a circular hole, the screw being inserted into the interior of the bearing outer shell, and the screw being locked and fixed to the interior of the bearing outer shell by a threaded limit block, two side protrusions with screw holes being integrally formed on the outer wall surface of the bearing inner shell, and the bearing inner shell can be fixedly mounted on the wall by using screws, and a refueling assembly is provided on the top plane of the bearing inner shell.

[0009] Preferably, a side rectangular groove is provided on the inner wall of the bearing housing, and a screw protrusion is integrally formed at a position of the screw corresponding to the side rectangular groove, and the screw protrusion is clamped together with the side rectangular groove.

[0010] Preferably, a threaded groove is provided on the back side of the bearing housing, a thread is provided on the inner wall of the threaded groove near the center point, and the internal thread of the threaded groove is connected to a threaded limit block, a hole is provided at the center point of the threaded limit block, the threaded limit block passes through the screw, and the planar inner wall of the threaded limit block fits the screw protrusion for limiting the position of the screw.

[0011] Preferably, an annular groove is provided on the outer side of the bearing outer shell, and an annular protrusion is integrally formed on the inner wall of the bearing inner shell at a position corresponding to the annular groove. The annular protrusion corresponds to the inner wall of one side of the annular groove and the inner wall of the annular groove, and multiple groups of ball mounting grooves are provided on the inner wall, and multiple groups of balls are rotatably connected between the corresponding two ball mounting grooves.

[0012] Preferably, a flow channel is provided inside the bearing inner shell at a position corresponding to the position where the ball mounting groove is provided on the annular protrusion, and the flow channel is connected to the oiling assembly.

[0013] Preferably, the refueling assembly includes a rectangular shell, a threaded tube and a sealing bolt. Square grooves are opened on the surface of the bearing inner shell at positions corresponding to the multiple groups of flow channels. The setting of the square grooves connects the multiple groups of flow channels. A rectangular shell is integrally formed on the surface of the bearing inner shell at positions corresponding to the square grooves. A threaded tube is fixedly installed on the top of the rectangular shell, and a sealing bolt is installed on the internal threads of the threaded tube.

[0014] Preferably, a T-shaped ring groove is formed on the outer wall of the bearing housing, and a T-shaped ring protrusion is integrally formed on the inner wall of the bearing inner housing at a position corresponding to the T-shaped ring groove, and the T-shaped ring protrusion is rotatably engaged with the T-shaped ring groove.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a ball screw support bearing with the following beneficial effects:

[0017] 1. The ball screw support bearing can add lubricating oil between the bearing inner shell and the bearing outer shell through the oiling assembly, which is convenient for adding grease and convenient for maintenance.

[0018] 2. The ball screw support bearing adds grease to the inside of the flow channel through the refueling assembly, and then slides along the flow channel to each individual ball mounting groove for lubrication, which can ensure that grease can be infiltrated between every two corresponding ball mounting grooves to ensure uniform grease lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a side view schematic diagram of the utility model;

[0021] Figure 3 for Figure 2 AA cross-sectional view in FIG;

[0022] Figure 4 for Figure 3 A local enlarged schematic diagram of point B in FIG.

[0023] Figure 5 for Figure 2 Schematic diagram of CC cross-section in .

[0024] In the figure: 1. Bearing inner shell; 2. Bearing outer shell; 3. Screw; 4. Side protrusion with screw hole; 5. Annular groove; 6. Annular protrusion; 7. Flow channel; 8. Rectangular outer shell; 9. Threaded tube; 10. Sealing bolt; 11. Ball mounting groove; 12. Ball; 13. T-shaped ring groove; 14. T-shaped ring protrusion; 15. Side rectangular groove; 16. Screw protrusion; 17. Threaded groove; 18. Threaded limit block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 , a ball screw support bearing, including a bearing inner shell 1, a bearing shell 2 and a screw 3. The bearing shell 2 is rotatably arranged inside the bearing inner shell 1. The center point of the bearing shell 2 has a circular hole. The screw 3 is inserted into the inside of the bearing shell 2. The screw 3 is locked and fixed to the inside of the bearing shell 2 by a threaded limit block 18. Two side protrusions 4 with screw holes are integrally formed on the outer wall of the bearing inner shell 1. The bearing inner shell 1 can be fixed to the wall by using screws. A refueling assembly is provided on the top plane of the bearing inner shell 1. Lubricating oil can be added between the bearing inner shell 1 and the bearing shell 2 through the refueling assembly, which is convenient for adding grease and convenient maintenance.

[0027] Furthermore, a side rectangular groove 15 is opened on the inner wall of the bearing housing 2, and a screw protrusion 16 is integrally formed at the position of the screw 3 corresponding to the side rectangular groove 15. The screw protrusion 16 is clamped together with the side rectangular groove 15. This arrangement enables the bearing housing 2 to rotate along with the screw 3 when it rotates.

[0028] Furthermore, a threaded groove 17 is provided on the back of the bearing housing 2, and a thread is provided on the inner wall of the threaded groove 17 near the center point, and the internal thread of the threaded groove 17 is connected to a threaded limit block 18, and a hole is provided at the center point of the threaded limit block 18, and the threaded limit block 18 passes through the screw 3, and the planar inner wall of the threaded limit block 18 fits the screw protrusion 16, which is used to limit the position of the screw 3.

[0029] Furthermore, an annular groove 5 is provided on the outer side of the bearing outer shell 2, and an annular protrusion 6 is integrally formed on the inner wall of the bearing inner shell 1 at a position corresponding to the annular groove 5. The annular protrusion 6 corresponds to the inner wall of one side of the annular groove 5 and the inner wall of the annular groove 5. Multiple groups of ball mounting grooves 11 are provided on the inner wall, and multiple groups of balls 12 are rotatably connected between the corresponding two ball mounting grooves 11.

[0030] Furthermore, a flow channel 7 is provided inside the bearing inner shell 1 at the position where the ball mounting groove 11 is provided on the annular protrusion 6. The flow channel 7 is connected to the refueling assembly. Grease is added to the inside of the flow channel 7 through the refueling assembly, and then slides along the flow channel 7 into each individual ball mounting groove 11 for lubrication. This can ensure that every two corresponding ball mounting grooves 11 can be soaked in grease, thereby ensuring the uniformity of grease lubrication.

[0031] Furthermore, the refueling assembly includes a rectangular shell 8, a threaded tube 9 and a sealing bolt 10. A square groove is opened on the surface of the bearing inner shell 1 at the position corresponding to the multiple groups of flow channels 7. The setting of the square groove connects the multiple groups of flow channels 7. A rectangular shell 8 is integrally formed on the surface of the bearing inner shell 1 at the position corresponding to the square groove. A threaded tube 9 is fixedly installed on the top of the rectangular shell 8, and a sealing bolt 10 is installed on the internal thread of the threaded tube 9. When grease needs to be injected for maintenance or care, the sealing bolt 10 is rotated off the threaded tube 9, and then grease is injected into the inside of the threaded tube 9. The grease then flows downward to the inside of the rectangular shell 8, and finally enters the inside of the square groove, and then flows to the inside of each flow channel 7, and finally flows to the inside of the ball mounting groove 11 for lubrication.

[0032] Furthermore, a T-shaped ring groove 13 is formed on the outer wall of the bearing housing 2, and a T-shaped ring protrusion 14 is integrally formed on the inner wall of the bearing inner housing 1 at a position corresponding to the T-shaped ring groove 13. The T-shaped ring protrusion 14 is rotatably engaged with the T-shaped ring groove 13.

[0033] Structure Description:

[0034] The inner bearing housing 1 is a key component of the bearing, providing an internal space for mounting other components. Its outer wall features two integrally formed side projections 4 with screw holes for securing the inner bearing housing 1 to a desired location (such as a wall). A refueling assembly is located on the top surface of the inner bearing housing 1 for adding lubricating oil to the bearing.

[0035] The bearing housing 2 is rotatably mounted within the bearing inner housing 1, with a circular hole at its center for the screw 3 to pass through. A rectangular groove 15 is defined on the inner wall of the bearing housing 2, mates with a specific structure on the screw 3. Furthermore, the outer side of the bearing housing 2 features an annular groove 5, which mates with an annular protrusion 6 on the bearing inner housing 1, as well as a T-shaped annular groove 13, which rotatably engages with a T-shaped annular protrusion 14 on the bearing inner housing 1, enhancing structural stability and smooth rotation.

[0036] The screw 3 is the core component of the ball screw support bearing. It is inserted into the interior of the bearing housing 2 and is locked and fixed in the bearing housing 2 by a threaded limit block 18. A screw protrusion 16 is integrally formed on the screw 3 at the position corresponding to the side rectangular groove 15 of the bearing housing 2, which is used to engage with the side rectangular groove 15 to ensure that the screw 3 can drive the bearing housing 2 to rotate together when it rotates.

[0037] An annular groove 5 is provided on the outer side of the bearing outer shell 2 and cooperates with the annular protrusion 6 on the bearing inner shell 1 to form a rotational connection, which helps the bearing to rotate smoothly.

[0038] The annular protrusion 6 is integrally formed on the inner wall of the bearing inner shell 1 and cooperates with the annular groove 5 on the bearing outer shell 2 to enhance the rotation stability and smoothness of the bearing.

[0039] The flow channel 7 is opened inside the bearing inner shell 1 and is connected to the oil filling assembly for guiding the lubricating oil into each ball mounting groove 11 to ensure sufficient lubrication of the bearing.

[0040] The rectangular housing 8 is a part of the oil filling assembly and is fixedly mounted on the surface of the bearing inner shell 1 for containing and guiding lubricating oil.

[0041] The threaded tube 9 is installed on the top of the rectangular housing 8 for connecting with the blocking bolt 10 and serving as a channel for injecting lubricating oil.

[0042] The blocking bolt 10 is connected to the threaded pipe 9 by a thread, and is used to close the lubricating oil injection channel to prevent the lubricating oil from leaking.

[0043] The ball mounting grooves 11 are provided at corresponding positions of the bearing outer shell 2 and the bearing inner shell 1 for mounting balls to realize the rolling function of the bearing.

[0044] The ball 12 is installed in the ball installation groove 11 and is a key component for the bearing to achieve rolling friction.

[0045] The T-shaped annular groove 13 is provided on the outer wall surface of the bearing outer shell 2 and cooperates with the T-shaped annular protrusion on the bearing inner shell 1 to form a rotational connection, further enhancing the stability of the bearing.

[0046] The T-shaped annular protrusion 14 is integrally formed on the inner wall of the bearing inner shell 1 and cooperates with the T-shaped annular groove 13 on the bearing outer shell 2 to ensure smooth rotation of the bearing.

[0047] The side rectangular groove 15 is formed on the inner wall of the bearing housing 2 and cooperates with the screw protrusion 16 on the screw 3 to achieve synchronous rotation of the screw 3 and the bearing housing 2 .

[0048] The lead screw protrusion 16 is integrally formed on the lead screw 3 and matches with the side rectangular groove 15 on the bearing housing 2 . It is a key structure for connecting the lead screw 3 and the bearing housing 2 .

[0049] A threaded groove 17 is provided on the back of the bearing housing 2 for mounting a threaded stopper 18 to limit the position of the lead screw 3 .

[0050] The threaded limit block 18 is connected to the threaded groove 17 through threads and passes through the screw 3 to lock and limit the position of the screw 3.

[0051] Working principle: When the screw 3 needs to be assembled, align the position of the screw protrusion 16 with the threaded groove 17 and then insert it. At this time, one end of the screw 3 passes through the bearing housing 2, and then rotate the thread limit block 18 to achieve threaded installation of the thread limit block 18 inside the threaded groove 17 to complete the locking. When grease needs to be injected for maintenance or care, rotate the sealing bolt 10 off the threaded tube 9, and then inject grease into the inside of the threaded tube 9. The grease then flows downward to the inside of the rectangular housing 8, and finally enters the inside of the square groove, and then flows to the inside of each flow channel 7, and finally flows to the inside of the ball mounting groove 11 for lubrication.

[0052] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ball screw support bearing, comprising a bearing inner shell (1), a bearing outer shell (2) and a screw (3), characterized in that: The bearing housing (2) is rotatably arranged inside the bearing inner housing (1); a circular hole is provided at the center point of the bearing housing (2); the lead screw (3) is inserted into the interior of the bearing housing (2); the lead screw (3) is locked and fixed inside the bearing housing (2) by a threaded limit block (18); two side protrusions (4) with screw holes are integrally formed on the outer wall surface of the bearing inner housing (1); the bearing inner housing (1) can be fixedly installed on the wall by using screws; and a refueling assembly is provided on the top plane of the bearing inner housing (1).

2. A ball screw support bearing according to claim 1, characterized in that: A side rectangular groove (15) is provided on the inner wall of the bearing housing (2), and a screw protrusion (16) is integrally formed on the screw (3) at a position corresponding to the side rectangular groove (15), and the screw protrusion (16) is clamped together with the side rectangular groove (15).

3. A ball screw support bearing according to claim 2, characterized in that: The back of the bearing housing (2) is provided with a threaded groove (17), the inner wall of the threaded groove (17) near the center point is provided with a thread, and the inner thread of the threaded groove (17) is connected to a threaded stopper (18), the center point of the threaded stopper (18) is provided with a hole, the threaded stopper (18) passes through the lead screw (3), and the plane inner wall of the threaded stopper (18) fits the lead screw protrusion (16).

4. A ball screw support bearing according to claim 1, characterized in that: An annular groove (5) is provided on the outer side of the bearing housing (2); an annular protrusion (6) is integrally formed on the inner wall of the bearing inner housing (1) at a position corresponding to the annular groove (5); a plurality of groups of ball mounting grooves (11) are provided on the inner wall of one side of the annular groove (5) corresponding to the annular protrusion (6) and the inner wall of the annular groove (5); and a plurality of groups of balls (12) are rotatably engaged between two corresponding ball mounting grooves (11).

5. A ball screw support bearing according to claim 4, characterized in that: A flow channel (7) is provided inside the bearing inner shell (1) at a position corresponding to the position where the ball mounting groove (11) is provided on the annular protrusion (6), and the flow channel (7) is connected to the oiling assembly.

6. A ball screw support bearing according to claim 5, characterized in that: The refueling assembly comprises a rectangular shell (8), a threaded tube (9) and a plugging bolt (10); a square groove is provided on the surface of the bearing inner shell (1) at positions corresponding to the plurality of flow channels (7); the setting of the square groove connects the plurality of flow channels (7); a rectangular shell (8) is integrally formed on the surface of the bearing inner shell (1) at positions corresponding to the square groove; a threaded tube (9) is fixedly installed on the top of the rectangular shell (8); and a plugging bolt (10) is installed on the internal thread of the threaded tube (9).

7. The ball screw support bearing according to claim 1, characterized in that: The outer wall surface of the bearing outer shell (2) is provided with a T-shaped annular groove (13), and the inner wall of the bearing inner shell (1) is integrally formed with a T-shaped annular protrusion (14) at a position corresponding to the T-shaped annular groove (13), and the T-shaped annular protrusion (14) is rotatably engaged with the T-shaped annular groove (13).

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