Ball spline housing

Abstract

The utility model relates to the technical field of spline housings, and discloses a ball spline housing which comprises a retainer, a bushing, a base and a mounting seat, a plurality of rolling grooves are formed in the periphery of the retainer, a plurality of balls are movably arranged in the rolling grooves, the retainer is arranged in the bushing, a mounting groove is formed in the periphery of the bushing, and the mounting seat is arranged in the mounting groove. An installation groove is formed in the base, a flat key is fixedly installed in the installation groove, a first groove is formed in one side of the base, a guide groove is formed in an inner cavity of the first groove, the flat key is matched with the guide groove, and the base is connected into the installation base in a screwed mode through threads. According to the spline housing, the lining is moved out of the base through the flat key and the guide groove, in this way, disassembly and assembly are convenient, the assembly precision is improved, the bearing capacity of the spline housing is improved through the base and the installation base, and the problems that in the prior art, the installation mode of the spline housing is single, and disassembly is not convenient are solved.

Description

Technical Field

[0001] This utility model relates to the field of spline sleeve technology, and in particular to a ball spline sleeve. Background Technology

[0002] A ball spline sleeve is a mechanical transmission element typically used to convert rotary motion into linear motion, or to transmit torque and provide precise positioning. It is used in conjunction with a ball spline shaft to form a unique spline connection.

[0003] In the existing technology, the installation method of the ball spline sleeve is relatively simple and not easy to disassemble. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a ball spline sleeve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A ball spline sleeve includes a cage, a bushing, a base, and a mounting base. The outer periphery of the cage is provided with a plurality of rolling grooves, and a plurality of balls are movably disposed in each of the rolling grooves. The cage is disposed inside the bushing.

[0007] The bushing has an installation groove on its outer periphery, and a flat key is fixedly installed in the installation groove. The base has a first groove on one side, and a guide groove is provided in the inner cavity of the first groove. The flat key and the guide groove are adapted to each other. The base is screwed into the mounting base by threads.

[0008] Preferably, the bushing has limit grooves at both the upper and lower ends, and limit rings are installed in both limit grooves, with the two limit rings respectively moving against the upper and lower ends of the retainer.

[0009] Preferably, a flange is installed on one side of the mounting base.

[0010] Preferably, the cage is provided with a plurality of placement slots, and each of the placement slots contains a solid lubricant.

[0011] Preferably, all of the rolling grooves are annular, and one side of the rolling groove is connected to the inner circumference of the cage.

[0012] Preferably, the retainer is made of brass and the limiting ring is made of stainless steel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention utilizes a bushing to house the ball bearings and cage. A key and guide groove allow the bushing to be inserted into the guide groove, guiding it into the first groove. The base and mounting seat are then screwed together, installing the bushing within both. This increases the installation options for the bushing. Compared to existing technologies, this device allows for separation of the base and mounting seat by rotation. The bushing can then be removed from the base via the key and guide groove, facilitating assembly and disassembly. The guide groove also improves assembly accuracy. Furthermore, the base and mounting seat enhance the load-bearing capacity of the spline sleeve, solving the problems of limited installation methods and inconvenient disassembly in existing spline sleeve technologies. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a ball spline sleeve proposed in this utility model;

[0016] Figure 2 An exploded view of the base and mounting seat of a ball spline sleeve proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of a bushing for a ball spline sleeve proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of a limiting groove for a ball spline sleeve proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of a retainer for a ball spline sleeve proposed in this utility model.

[0020] In the diagram: 1. Cage; 2. Bushing; 3. Base; 4. Mounting seat; 5. Rolling groove; 6. Ball bearing; 7. Mounting groove; 8. Flat key; 9. First groove; 10. Guide groove; 11. Limiting groove; 12. Limiting ring; 13. Flange; 14. Placement groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1 to 5 A ball spline sleeve includes a retainer 1, a bushing 2, a base 3 and a mounting base 4. The outer periphery of the retainer 1 is provided with a plurality of rolling grooves 5, and a plurality of balls 6 are movably disposed in each of the plurality of rolling grooves 5. The retainer 1 is disposed inside the bushing 2.

[0023] The bushing 2 has an installation groove 7 on its outer periphery, and a flat key 8 is fixedly installed in the installation groove 7. The base 3 has a first groove 9 on one side, and a guide groove 10 is formed in the inner cavity of the first groove 9. The flat key 8 and the guide groove 10 are adapted to each other. The base 3 is screwed into the mounting seat 4. The bushing 2 has limit grooves 11 at both the upper and lower ends, and limit rings 12 are installed in both limit grooves 11. The two limit rings 12 are respectively moved and abut against the upper and lower ends of the retainer 1. Through the limit grooves 11 and the limit rings 12, the limit rings 12 can be installed in the limit grooves 11, so that the limit rings 12 fit against the two sides of the retainer and limit the retainer. A flange 13 is installed on one side of the mounting seat 4. Through the flange 13, the base 3 and the bushing 2 in the mounting seat 4 can be connected by the flange 13 or by the flat key 8 as needed. The workpiece is installed on the bushing 2, so that the bushing 2 drives the workpiece to move linearly. The retainer 1 The bushing 2 is provided with several placement slots 14, each containing a solid lubricant. By placing the solid lubricant in the slots 14, and ensuring it is within the cage 1, the lubricant adheres to the non-ball bearings 6 during rolling contact, achieving self-lubrication and reducing the frequency of manual lubrication replenishment. Several rolling grooves 5 are annular, with one side connected to the inner circumference of the cage 1. This connection allows the balls 6 within the rolling grooves 5 to contact the workpiece mounted within the bushing 2, enabling the conversion between rotational and linear motion. The cage 1 is made of brass, and the limiting ring 12 is made of stainless steel. By using brass for the cage 1 and stainless steel for the limiting ring 12, the cage 1 and limiting ring 12 can be used for extended periods in high-temperature environments, increasing their reliability and durability.

[0024] In use, the ball bearing 6 and the retainer 1 can be installed inside the bushing 2. Using the provided flat key 8 and guide groove 10, the bushing 2 can be guided into the first groove 9 by inserting the flat key 8 into the guide groove 10. Then, the base 3 and the mounting seat 4 are screwed together, allowing the bushing 2 to be installed within the base 3 and mounting seat 4. This increases the installation methods for the bushing 2. Compared to existing technologies, this device, through the provision of the base 3 and mounting seat 4, allows the base 3 to be separated from the mounting seat 4 by rotating it. The bushing 2 can then be removed from the base 3 using the flat key 8 and guide groove 10. This facilitates disassembly and assembly. Furthermore, the guide groove 10 increases assembly accuracy, and the base 3 and mounting seat 4 increase the load-bearing capacity of the spline sleeve. This solves the problem of the limited installation methods and inconvenient disassembly of spline sleeves in existing technologies.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball spline sleeve, comprising a retainer (1), a bushing (2), a base (3), and a mounting base (4), wherein the retainer (1) has a plurality of rolling grooves (5) on its outer periphery, and a plurality of balls (6) are movably disposed in each of the plurality of rolling grooves (5), and the retainer (1) is disposed within the bushing (2), characterized in that: The bushing (2) has an installation groove (7) on its outer periphery. A flat key (8) is fixedly installed in the installation groove (7). A first groove (9) is provided on one side of the base (3). A guide groove (10) is provided in the inner cavity of the first groove (9). The flat key (8) and the guide groove (10) are compatible. The base (3) is screwed into the mounting seat (4) by threads.

2. The ball spline sleeve according to claim 1, characterized in that: Both ends of the bushing (2) are provided with limiting grooves (11), and each of the two limiting grooves (11) is equipped with a limiting ring (12), and the two limiting rings (12) move against the upper and lower ends of the retainer (1) respectively.

3. The ball spline sleeve according to claim 1, characterized in that: A flange (13) is installed on one side of the mounting base (4).

4. A ball spline sleeve according to claim 1, characterized in that: The retainer (1) is provided with a plurality of placement slots (14), and each of the plurality of placement slots (14) contains a solid lubricant.

5. A ball spline sleeve according to claim 1, characterized in that: Several of the rolling grooves (5) are annular, and one side of the rolling groove (5) is connected to the inner periphery of the cage (1).

6. A ball spline sleeve according to claim 2, characterized in that: The retainer (1) is made of brass, and the limiting ring (12) is made of stainless steel.

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