Outer circle flange-shaped guide sleeve inner ball spline

Abstract

The utility model discloses an outer circle flange-shaped guide sleeve inner ball spline, which relates to the field of mechanical transmission, and comprises a rectangular shaft, an outer guide sleeve and a plurality of groups of ball ways correspondingly arranged on the outer wall of the rectangular shaft and the inner wall of the outer guide sleeve; a flange plate is arranged on the outer wall of the outer guide sleeve. According to the ball spline, the stud and the positioning block are driven to move by rotating the knob, the position of the flange plate can be conveniently adjusted, the flange plate can adapt to the sizes, shapes and connection modes of different external connecting pieces, the universality and adaptability of the ball spline are enhanced, the flange plate can be easily separated from the outer guide sleeve, and the service life of the ball spline is prolonged. The outer guide sleeve can be conveniently maintained or other connecting pieces can be conveniently replaced, the maintenance cost and difficulty are reduced, the maintainability of equipment is improved, the eight sets of ball ways arranged on the outer wall of the rectangular shaft of the ball spline increase stress fulcrums, the average point position stress is reduced, the torque transmission capacity is effectively improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of mechanical transmission, in particular to an outer circular flange-shaped guide sleeve with an inner ball spline. Background Art

[0002] In existing mechanical transmissions, spline connection is a commonly used method for transmitting torque and achieving axial movement, and is widely used in the industrial field. In modern mechanical manufacturing, the requirements for transmission components are becoming increasingly higher. They not only need to be able to transmit torque efficiently, but also need to have good linear motion accuracy, high load capacity and long service life.

[0003] Among the many types of splines, ball splines with flanges are unique. By adding a flange to the spline structure, they facilitate connection to external equipment, enhancing the stability and reliability of the connection. The presence of the flange also makes ball splines particularly advantageous in applications requiring fixed installation or close coordination with other components.

[0004] However, the existing ball spline with a flange is difficult to flexibly adjust according to different external connectors and usage requirements due to its fixed flange position. In actual applications, it is often encountered that the size, shape or connection method of the external connector does not match the flange of the ball spline. This requires the entire ball spline to be replaced or modified, which increases the cost and workload. This design limitation has, to a certain extent, restricted the widespread application of ball splines with flanges. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide an outer cylindrical flange-shaped guide sleeve with an inner ball spline to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: an outer flange-shaped guide sleeve inner ball spline comprises a rectangular shaft, an outer guide sleeve and a ball track, wherein the ball track is provided in a plurality of groups on the outer wall of the rectangular shaft and the inner wall of the outer guide sleeve;

[0007] The outer wall of the outer guide sleeve is provided with a flange, and a connecting block is installed on the inner wall of the flange. A connecting groove corresponding to the connecting block is opened on the outer wall of the outer guide sleeve. A positioning block is slidably installed in the connecting block, and a stud corresponding to the positioning block is rotatably installed in the flange. When the position of the flange is fixed, the end of the positioning block is in contact with the inner wall of the connecting groove.

[0008] By adopting the above technical solution, the rectangular shaft, outer guide sleeve and ball track are combined into the basic structure of the ball spline, which provides a basis for achieving efficient torque transmission and stable linear motion. At the same time, the flange set on the outer wall of the outer guide sleeve and the related connection structure enable the ball spline to be easily connected to external equipment, enhancing its versatility and practicality.

[0009] Furthermore, two groups of the ball tracks are symmetrically installed on the outer walls of the four sides of the rectangular shaft, forming a total of eight groups of the ball tracks.

[0010] By adopting the above technical solution, the force fulcrum is increased. Under the same external force, the average point force is smaller, thereby effectively improving the load-bearing capacity and service life of the ball spline, and can better meet the application requirements of high-torque scenarios.

[0011] Furthermore, the inner wall of the flange is in contact with the outer wall of the outer guide sleeve, and multiple groups of connecting blocks are installed at equal angles on the inner wall of the flange, and the outer walls of the connecting blocks are in contact with the inner wall of the connecting groove.

[0012] By adopting the above technical solution, the stability and reliability of the connection between the flange and the outer guide sleeve are guaranteed, loosening or displacement during use is prevented, and the normal operation of the ball spline is ensured.

[0013] Furthermore, the shape of the end portion of the positioning block is the same as the cross-sectional shape of the connecting groove. When the position of the flange is not fixed, the positioning block is completely located inside the connecting block.

[0014] By adopting the above technical solution, this design makes it more convenient to install and adjust the flange position without causing interference to other components. At the same time, it can also effectively protect the positioning block and extend its service life.

[0015] Furthermore, a plurality of groups of protruding teeth are installed at equal intervals at the end of the positioning block, and a plurality of groups of tooth grooves are provided at equal intervals in the connecting groove to engage with the protruding teeth at the end of the positioning block.

[0016] By adopting the above technical solution, the position of the flange can be accurately adjusted and fixed, thereby improving the assembly accuracy and performance of the ball spline.

[0017] Furthermore, the length of the connecting groove is smaller than the length of the outer guide sleeve, and an opening at one end of the connecting groove passes through the outer guide sleeve.

[0018] By adopting the above technical solution, it is convenient for the subsequent disassembly of the flange, making the operation simpler and faster when the flange or the outer guide sleeve needs to be maintained or replaced.

[0019] Furthermore, a thread groove communicating with the connecting groove is provided on the outer wall of the outer guide sleeve, and the diameter of the end portion of the outer guide sleeve where the thread groove is provided is smaller than the inner diameter of the flange.

[0020] By adopting the above technical solution, it is ensured that when the thread groove is exposed, the flange can be separated from the outer guide sleeve through the connecting groove.

[0021] Furthermore, a threaded ring is threadedly mounted on the end portion of the outer guide sleeve where the thread groove is formed, and the diameter of the threaded ring is the same as that of the outer guide sleeve.

[0022] By adopting the above technical solution, the threaded ring and the outer guide sleeve are more tightly combined during installation and use, and no abrupt parts appear, further improving the overall structural strength and stability of the ball spline.

[0023] Furthermore, the diameter of the stud is smaller than the thickness of the positioning block, and the end of the stud is threadedly connected to one end of the positioning block located in the connecting block, and the length of the stud in the positioning block is greater than the distance between the positioning block and the inner wall of the connecting groove.

[0024] By adopting the above technical solution, when the stud is rotated, the positioning block can be driven to slide more stably in the connecting block, ensuring that the protruding teeth of the positioning block and the tooth grooves of the connecting groove are accurately engaged or disengaged, thereby improving the reliability and accuracy of the flange position adjustment.

[0025] Furthermore, a knob is fixedly mounted on the outer end of the stud.

[0026] By adopting the above technical solution, it is convenient for users to operate the rotation of the stud without using additional tools, thereby improving work efficiency and making the use of the ball spline more user-friendly.

[0027] In summary, the present invention has the following beneficial effects:

[0028] The utility model drives the movement of the stud and the positioning block by turning the knob, which can conveniently adjust the position of the flange to adapt to the size, shape and connection method of different external connecting parts, thereby enhancing the versatility and adaptability of the ball spline. The ball spline can easily separate the flange from the outer guide sleeve, which is convenient for maintenance of the outer guide sleeve or replacement of other connecting parts, reducing maintenance costs and difficulty, and improving the maintainability of the equipment. Secondly, the eight groups of ball tracks arranged on the outer wall of the rectangular shaft of the ball spline increase the force fulcrum, reduce the average point force, effectively improve the torque transmission capacity, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0030] Figure 2 It is a perspective view of the utility model after being cut apart;

[0031] Figure 3This is a schematic diagram of the three-dimensional structure of the flange of the utility model after being cut open;

[0032] Figure 4 This is a schematic diagram of the three-dimensional structure of the flange of the utility model after partial section;

[0033] Figure 5 This is a schematic diagram of the three-dimensional structure of the utility model after the threaded ring is removed.

[0034] In the figure: 1. Rectangular shaft; 2. Outer guide sleeve; 3. Ball raceway; 4. Flange; 5. Connecting block; 6. Connecting groove; 61. Threaded groove; 62. Threaded ring; 7. Positioning block; 8. Stud; 9. Knob. DETAILED DESCRIPTION

[0035] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The following describes an embodiment of the present invention based on its overall structure.

[0037] The utility model provides an outer circular flange-shaped guide sleeve inner ball spline, which is mainly intended to solve the problem that the existing ball spline with a flange plate 4 is difficult to flexibly adjust according to actual needs due to the fixed position of the flange plate 4, resulting in mismatch problems in application, increasing costs and workload.

[0038] External flange guide sleeve with internal ball spline, such as Figure 1 - Figure 5 As shown, the ball spline mainly consists of a rectangular shaft 1, an outer guide sleeve 2 and a ball track 3.

[0039] Among them, multiple groups of ball tracks 3 are correspondingly provided on the outer wall of the rectangular shaft 1 and the inner wall of the outer guide sleeve 2 to achieve efficient torque transmission and stable linear motion. The balls in the ball tracks 3 roll when the rectangular shaft 1 and the outer guide sleeve 2 move relative to each other, which can greatly reduce friction resistance, making the movement of the rectangular shaft 1 smoother, and at the same time effectively reducing energy loss and improving transmission efficiency.

[0040] At the same time, a flange 4 is provided on the outer wall of the outer guide sleeve 2 for connecting to external equipment. The presence of the flange 4 enables the ball spline to be conveniently fixedly connected to other components, thereby enhancing the stability and reliability of the connection. The role of the flange 4 is particularly important in some mechanical transmission systems that require precise installation and positioning.

[0041] This embodiment further includes a connecting block 5 installed on the inner wall of the flange 4, and a connecting groove 6 corresponding to the connecting block 5 is opened on the outer wall of the outer guide sleeve 2. A positioning block 7 is slidably installed in the connecting block 5, and a stud 8 corresponding to the positioning block 7 is rotatably installed in the flange 4. When the flange 4 is fixed in position, the end of the positioning block 7 is in contact with the inner wall of the connecting groove 6, ensuring that the connection between the flange 4 and the outer guide sleeve 2 is stable and reliable. The close fit between the connecting block 5 and the connecting groove 6 not only ensures the connection strength between the flange 4 and the outer guide sleeve 2, but also can withstand axial and radial forces to a certain extent, preventing loosening or displacement during use, thereby ensuring the normal operation of the ball spline. The cooperation between the positioning block 7 and the stud 8 realizes the precise adjustment and fixation of the position of the flange 4, thereby improving the assembly accuracy and performance of the ball spline.

[0042] During the actual implementation process, the flange 4 is first installed through the connecting block 5 and the connecting groove 6 of the outer guide sleeve 2 to ensure that the connecting block 5 and the connecting groove 6 are tightly fitted.

[0043] For example, two groups of ball ways 3 are symmetrically installed on the outer walls of the four sides of the rectangular shaft 1, forming a total of eight groups of ball ways 3. This design allows for more force fulcrums and smaller average force at each point under the same external force, thereby effectively improving the load-bearing capacity and service life of the ball spline. At the same time, it also enhances the torque transmission capability, and can better meet the application requirements of high-torque scenarios. During use, when the rectangular shaft 1 slides in the outer guide sleeve 2, the balls in the ball ways 3 roll, reducing frictional resistance and making the movement of the rectangular shaft 1 smoother. Under high-load working conditions, multiple groups of ball ways 3 can evenly share the pressure, reduce the wear of individual balls and raceways, and extend the service life of the ball spline.

[0044] In this embodiment, the inner wall of the flange 4 is tightly attached to the outer wall of the outer guide sleeve 2, and multiple groups of connecting blocks 5 are installed at equal angles on the inner wall of the flange 4. The outer walls of the connecting blocks 5 are attached to the inner walls of the connecting grooves 6, further enhancing the stability of the connection between the flange 4 and the outer guide sleeve 2. The uniform distribution of the connecting blocks 5 makes the force between the flange 4 and the outer guide sleeve 2 more uniform, avoiding local stress concentration and improving the strength and stability of the overall structure.

[0045] For example, the shape of the end of the positioning block 7 is the same as the cross-sectional shape of the connecting groove 6. When the position of the flange 4 is not fixed, the positioning block 7 is completely located inside the connecting block 5. This design makes it more convenient to install and adjust the position of the flange 4 without interfering with other components. At the same time, it can also effectively protect the positioning block 7 and extend its service life.

[0046] At the same time, multiple sets of convex teeth are installed at equal intervals on the end of the positioning block 7, and multiple sets of tooth grooves that mesh with the convex teeth at the end of the positioning block 7 are opened at equal intervals in the connecting groove 6. By rotating the stud 8, the positioning block 7 can be driven to slide in the connecting block 5, so that the convex teeth at the end of the positioning block 7 are engaged or disengaged with the tooth grooves in the connecting groove 6, thereby achieving precise adjustment and fixation of the position of the flange 4. This precise adjustment method can adapt the flange 4 to the sizes and shapes of different external connectors, thereby improving the versatility and adaptability of the ball spline.

[0047] During specific implementation, when the position of the flange 4 needs to be adjusted, first rotate the stud 8, and the stud 8 drives the positioning block 7 to slide in the connecting block 5, so that the convex teeth at the end of the positioning block 7 are separated from the tooth grooves in the connecting groove 6. At this time, the restriction of the flange 4 is released, and then, the flange 4 can be pushed to slide in the connecting groove 6 according to actual needs. After adjusting to the appropriate position, rotate the stud 8 in the opposite direction so that the convex teeth at the end of the positioning block 7 are re-engaged with the tooth grooves in the connecting groove 6 to fix the position of the flange 4.

[0048] Exemplarily, the length of the connecting groove 6 is smaller than the length of the outer guide sleeve 2, and one end of the connecting groove 6 is opened through the outer guide sleeve 2, and the outer wall of the outer guide sleeve 2 is provided with a threaded groove 61 connected to the connecting groove 6, and the diameter of the end of the outer guide sleeve 2 where the threaded groove 61 is opened is smaller than the inner diameter of the flange 4, and a threaded ring 62 is threadedly installed on the end, and the diameter of the threaded ring 62 is the same as the diameter of the outer guide sleeve 2. The design of the connecting groove 6 provides convenience for the subsequent disassembly of the flange 4, so that when the flange 4 or the outer guide sleeve 2 needs to be maintained or replaced, the operation is simpler and faster. The cooperation of the threaded groove 61 and the threaded ring 62 can cover the opening of the connecting groove 6 during normal use, thereby protecting components such as the connecting block 5 and the positioning block 7, and at the same time ensuring the overall aesthetics of the ball spline.

[0049] When the flange 4 needs to be removed, rotate the threaded ring 62 to separate it from the threaded groove 61, exposing the opening of the connecting groove 6, and the flange 4 can be slid out through the connecting groove 6, which facilitates the maintenance and replacement of the flange 4 and the outer guide sleeve 2 and other components. During the maintenance process, if it is necessary to inspect, repair or replace the flange 4 or the outer guide sleeve 2 with other types of flanges 4 or connectors, follow the above steps to separate the flange 4 from the outer guide sleeve 2, and then perform the corresponding maintenance work.

[0050] In summary, the present invention realizes the functions of high torque transmission, flexible adjustment of the position of the flange 4 and easy maintenance through the above-mentioned structural design, and has high practical value.

[0051] The working principle of the utility model is as follows: when the ball spline is used, the rectangular shaft 1 begins to slide. Since the outer wall of the rectangular shaft 1 is provided with eight sets of ball tracks 3, when the rectangular shaft 1 moves horizontally in the outer guide sleeve 2, the more ball tracks 3 there are, the more force fulcrums there are under the same external force, the smaller the average point force is, and the longer the service life is;

[0052] When it is necessary to adjust the position of the flange 4, first, turn the knob 9 to separate the positioning block 7 from the connecting groove 6. At this time, the restriction of the flange 4 is released, and the flange 4 can be pushed to adjust. During this process, the connecting block 5 will cooperate with the connecting groove 6 to adjust the sliding of the flange 4. When it slides to the desired position, turn the knob 9 in the opposite direction, so that the positioning block 7 begins to slide into the connecting groove 6 under the action of the screw principle, until the convex teeth at the end of the positioning block 7 engage with the tooth grooves in the connecting groove 6. At this time, the adjustment of the position of the flange 4 and the fixation after adjustment are completed;

[0053] When it is necessary to remove the outer guide sleeve 2, first, rotate the threaded ring 62 to separate it from the threaded groove 61. At this time, the opening of the connecting groove 6 will leak out, and then release the restriction of the positioning block 7 on the flange 4. Then, by pulling the outer guide sleeve 2, the flange 4 will pass through the opening of the connecting groove 6, completing the separation of the flange 4 and the outer guide sleeve 2, which is convenient for maintenance of the outer guide sleeve 2 or replacement of other connecting parts. When the ball spline is actually used, the position of the flange 4 can be flexibly adjusted according to the actual situation and usage requirements of the external connecting part, ensuring that the flange 4 can be smoothly connected to the external connecting part, and it is also convenient to separate the flange 4 from the outer guide sleeve 2, which is convenient for subsequent maintenance and replacement of other models of flanges 4 or other connecting parts.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not limitations on the present invention. The specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and purpose of the present invention, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. Ball spline inside the outer flange guide sleeve, characterized by: It comprises a rectangular shaft (1), an outer guide sleeve (2) and a ball track (3), wherein the ball track (3) is provided in a plurality of groups on the outer wall of the rectangular shaft (1) and the inner wall of the outer guide sleeve (2); The outer wall of the outer guide sleeve (2) is provided with a flange (4), and the inner wall of the flange (4) is provided with a connecting block (5); the outer wall of the outer guide sleeve (2) is provided with a connecting groove (6) corresponding to the connecting block (5); a positioning block (7) is slidably installed in the connecting block (5); a stud (8) corresponding to the positioning block (7) is rotatably installed in the flange (4); when the position of the flange (4) is fixed, the end of the positioning block (7) is in contact with the inner wall of the connecting groove (6).

2. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: Two groups of ball tracks (3) are symmetrically mounted on the four outer walls of the rectangular shaft (1), forming a total of eight groups of ball tracks (3).

3. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: The inner wall of the flange (4) is in contact with the outer wall of the outer guide sleeve (2), and multiple groups of connecting blocks (5) are installed at equal angles on the inner wall of the flange (4), and the outer walls of the connecting blocks (5) are in contact with the inner wall of the connecting groove (6).

4. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: The shape of the end of the positioning block (7) is the same as the cross-sectional shape of the connecting groove (6); when the position of the flange (4) is not fixed, the positioning block (7) is completely located inside the connecting block (5).

5. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: The end of the positioning block (7) is provided with a plurality of groups of convex teeth at equal intervals, and the connection groove (6) is provided with a plurality of groups of tooth grooves at equal intervals that mesh with the convex teeth at the end of the positioning block (7).

6. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: The length of the connecting groove (6) is smaller than the length of the outer guide sleeve (2), and one end of the connecting groove (6) is open and passes through the outer guide sleeve (2).

7. The ball spline with an outer flange guide sleeve according to claim 6, characterized in that: The outer wall of the outer guide sleeve (2) is provided with a thread groove (61) communicating with the connecting groove (6), and the diameter of the end portion of the outer guide sleeve (2) where the thread groove (61) is provided is smaller than the inner diameter of the flange (4).

8. The ball spline with an outer flange guide sleeve according to claim 7, characterized in that: The end portion of the outer guide sleeve (2) having the thread groove (61) is threadedly mounted with a threaded ring (62), and the diameter of the threaded ring (62) is the same as that of the outer guide sleeve (2).

9. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: The diameter of the stud (8) is smaller than the thickness of the positioning block (7), and the end of the stud (8) is threadedly connected to one end of the positioning block (7) located in the connecting block (5), and the length of the stud (8) located in the positioning block (7) is greater than the distance between the positioning block (7) and the inner wall of the connecting groove (6).

10. The ball spline with an outer flange guide sleeve according to claim 1, characterized in that: A knob (9) is fixedly mounted on the outer end of the stud (8).

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