Miniature integrated rotating device

Abstract

The utility model discloses a miniature integrated rotating device, which relates to the technical field of integrated rotating devices and comprises a ball shaft, a ball spline sleeve is connected to the outer side of the ball shaft, an outer bearing sleeve is connected to the outer side of the ball spline sleeve, and a flange is fixed at the top end of the outer bearing sleeve. A plurality of sets of first balls are arranged between the ball shaft and the ball spline housing, and a synchronizing wheel is arranged at the top end of the ball spline housing. When the ball spline housing moves on the ball shaft, the multiple groups of first balls arranged on the surface, in contact with the spline housing, of the ball spline housing slide in the bearing ball channel in the outer bearing housing, so that the outer bearing housing and the flange integrally formed at the bottom end of the outer bearing housing rotate, and the bearing housing is prevented from rotating; and the space for externally mounting standard bearings and flanges is greatly reduced, the weight of the whole set of product is reduced, the load of the product is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of integrated rotating devices, in particular to a miniature integrated rotating device. Background Art

[0002] The ZR-axis actuator, also known as a linear-rotary actuator, is a high-precision control component that integrates the functions of the Z-axis (up and down linear motion) and the R-axis (rotational motion). Through its ingenious design, it integrates the moving parts of the voice coil motor and the rotary servo motor in a space only 20mm thick, achieving the superposition of up and down linear motion and 360-degree rotational motion without dead angles. ZR-axis actuators are widely used in fields requiring high precision and high stability, such as semiconductors, 3C manufacturing, and new energy. For example, in semiconductor chip placement equipment, the ZR-axis actuator can independently complete a series of complex actions such as lifting, rotation angle calibration, chip suction, and chip placement, becoming a core component. In addition, the ZR-axis actuator also has a soft landing function, which can control the force to gently touch fragile objects, thereby improving production efficiency and product quality.

[0003] The existing ZR-axis actuator requires the installation of bearings, flanges and other connecting devices outside the nut to achieve the rotation function. This greatly increases the space required for external standard bearings and flanges, and also increases the weight of the entire product, making its own load greater and shortening its service life. Utility Model Content

[0004] Based on this, the purpose of the present invention is to provide a miniature integrated rotating device to solve the technical problem that the ZR axis actuator needs to be connected with bearings, flanges and other connecting devices installed outside the nut to realize the rotation function.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a miniature integrated rotating device, comprising a ball shaft, a ball spline sleeve connected to the outside of the ball shaft, an outer bearing sleeve connected to the outside of the ball spline sleeve, a flange fixed to the top of the outer bearing sleeve, multiple groups of first balls arranged between the ball shaft and the ball spline sleeve, and a synchronous wheel arranged at the top of the ball spline sleeve.

[0006] By adopting the above technical solution, when in use, the ball spline sleeve is moved up and down on the ball shaft by relative force. When the ball spline sleeve moves up and down, the multiple groups of second balls arranged inside it will move along the ball grooves opened inside, and the free rolling of the second balls between the ball spline sleeves enables power to be transmitted from one shaft to another with extremely high efficiency, greatly reducing energy loss. At the same time, the ball shaft is also provided with a straight groove raceway that can cooperate with the second balls. While ensuring the movement of the ball spline sleeve, it can also play a certain limiting and guiding role to prevent shaking or deviation that affects subsequent use. When the ball spline sleeve moves, the second balls roll in the raceway, and by reducing the friction between the contact surfaces, high-efficiency power transmission is achieved.

[0007] When the height is moved to a suitable position, the outer bearing sleeve movably connected to the outer side of the ball spline sleeve and the multiple groups of first balls arranged in the annular slide groove opened in the outer bearing sleeve can cooperate with one end of the ball spline sleeve, and the outer bearing sleeve also has a bearing ball path opened in the interior, and the multiple groups of first balls are guided and limited by the bearing ball path;

[0008] A flange is fixed above the outer bearing sleeve. The outer bearing sleeve and the flange are integrally formed, and the flange has multiple sets of through holes that mate with the outside world. A synchronous wheel is installed on the top of the ball spline sleeve, eliminating the need for a synchronous wheel on the outer periphery of the ball spline sleeve. This design further reduces the size and weight of the component.

[0009] The above structure is different from the original structure that requires external bearings and flange-type connection devices such as ball spline sleeves. This can reduce the space required for external standard bearings and flanges, and also reduce the weight of the entire product, thereby reducing its own load and increasing its service life. In addition, this integrated up and down reciprocating and left and right rotating device saves space, reduces its own weight load, improves service life and precision, and saves time for precision adjustment of multiple components during equipment assembly.

[0010] Furthermore, a second ball is provided between the ball spline sleeve and the outer bearing sleeve, and a bearing ball track that matches the second ball is provided inside the outer bearing sleeve.

[0011] By adopting the above technical solution, when the ball spline sleeve is rotated by the second ball, the second ball rolls in the raceway, thereby reducing the friction between the contact surfaces and achieving efficient power transmission.

[0012] Furthermore, two groups of linear groove raceways cooperating with the first balls are provided inside the ball shaft, and multiple groups of teeth are provided on the outside of the synchronous wheel.

[0013] By adopting the above technical solution, the free rolling of the linear groove raceway and the first ball between the ball spline sleeve enables power to be transmitted from one shaft to another with extremely high efficiency, greatly reducing energy loss.

[0014] Furthermore, a threaded hole is provided inside the ball spline sleeve, and a plurality of groups of threads corresponding to external screws are provided inside the threaded hole.

[0015] By adopting the above technical solution, the external device that needs to be fixed is fixed to the top of the ball spline sleeve through the threaded hole to prevent it from falling off during subsequent use, and the thread inside the threaded hole is engaged with the external screw.

[0016] Furthermore, the number of the second balls is a group, and a plurality of groups of through holes are provided inside the flange.

[0017] By adopting the above technical solution, the second group of balls is used to ensure that subsequent use will not be affected due to the reduction in quantity, and the multiple groups of through holes inside the flange play a role in stable cooperation with the outside world.

[0018] Furthermore, the outer bearing sleeve and the flange are formed as one piece, and an annular cavity is defined between the outer bearing sleeve and the ball spline sleeve.

[0019] By adopting the above technical solution, the outer bearing sleeve and the flange are formed as one piece to prevent the outer bearing sleeve and the flange from being separated during subsequent use, and the annular cavity is used to ensure that the outer bearing sleeve and the ball spline sleeve can be used normally.

[0020] Furthermore, two groups of cavities cooperating with the first balls are provided inside the ball shaft, and the synchronous wheel is located outside the ball shaft.

[0021] By adopting the above technical solution, the first ball is fixed at one end of the ball shaft through the cavity to achieve force transmission, wherein the synchronous wheel is located outside the ball shaft to avoid the synchronous wheel affecting the operation.

[0022] Furthermore, the number of the first balls is a group, and the ball spline sleeve is provided with a groove matched with the first balls.

[0023] By adopting the above technical solution, the first ball is assembled to ensure that the ball spline sleeve can move up and down freely to prevent it from being affected during use. The groove is used to ensure that the ball spline sleeve is internally provided with an effective fit with the first ball.

[0024] Furthermore, an annular groove for matching with the outside is provided on the outside of the outer bearing sleeve, and limiting rings are provided on the top and bottom ends of the synchronous wheel.

[0025] By adopting the above technical solution, the annular groove is used to cooperate with the device that needs to be engaged with the outside world to prevent unstable fixation, and the limit ring prevents the synchronous wheel from shaking when rotating.

[0026] Furthermore, the number of the threaded holes is four groups, and an annular gap is provided between the ball shaft and the ball spline sleeve.

[0027] By adopting the above technical solution, external objects that need to be fixed to the top of the ball spline sleeve are fixed through the threaded hole, and the annular gap can be used to fix external devices, wherein the annular gap is used to effectively cooperate between the ball shaft and the ball spline sleeve, and jamming will not occur.

[0028] In summary, the present invention mainly has the following beneficial effects: when the ball spline sleeve moves on the ball shaft, the multiple groups of first balls arranged inside the ball spline sleeve will move along the grooves arranged inside it, and at the same time, the other side of the ball will contact the linear groove raceway opened on the ball shaft and matched with it, so as to cooperate with the second ball to make the ball spline sleeve move. When the up and down movement is completed, the outer bearing sleeve arranged on the outside of the ball spline sleeve and the multiple groups of first balls arranged on the side contacting the spline sleeve slide in the bearing ball track inside the outer bearing sleeve, so as to realize the rotation of the outer bearing sleeve and the flange integrally formed with the bottom end thereof, which greatly reduces the space required for external standard bearings and flanges, and also reduces the weight of the entire product, thereby reducing its own load and improving its service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0030] Figure 2 It is a top view of the utility model;

[0031] In the figure: 1. Ball shaft; 2. Linear groove raceway; 3. Through hole; 4. Synchronous wheel; 5. Flange; 6. Outer bearing sleeve; 7. Bearing ball track; 8. First ball; 9. Threaded hole; 10. Second ball; 11. Ball spline sleeve. DETAILED DESCRIPTION

[0032] 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.

[0033] The following describes an embodiment of the present invention based on its overall structure.

[0034] A miniature integrated rotating device, such as Figure 1-Figure 2 As shown, it includes a ball shaft 1, a ball spline sleeve 11 is connected to the outside of the ball shaft 1, an outer bearing sleeve 6 is connected to the outside of the ball spline sleeve 11, and a flange 5 is fixed to the top of the outer bearing sleeve 6. When in use, the ball spline sleeve 11 is moved up and down on the ball shaft 1 by relative force. When the ball spline sleeve 11 moves up and down, the multiple groups of second balls 10 arranged therein will move along the ball grooves opened therein, and the free rolling of the second balls 10 between the ball spline sleeves 11 enables power to be transmitted from one shaft to another with extremely high efficiency, greatly reducing energy loss;

[0035] Exemplarily, multiple groups of first balls 8 are arranged between the ball shaft 1 and the ball spline sleeve 11, a synchronous wheel 4 is provided at the top of the ball spline sleeve 11, and a second ball 10 is provided between the ball spline sleeve 11 and the outer bearing sleeve 6, wherein, at the same time, the ball shaft 1 is also provided with a linear groove raceway 2 that can cooperate with the second ball 10, while ensuring the movement of the ball spline sleeve 11, it can also play a certain limiting and guiding role to prevent shaking or deviation, which affects subsequent use, and when the ball spline sleeve 11 is moving, the second ball 10 rolls in the raceway, thereby reducing the friction between the contact surfaces and achieving high-efficiency power transmission;

[0036] Exemplarily, a bearing ball track 7 is provided inside the outer bearing sleeve 6 to cooperate with the second ball 10, two sets of linear groove raceways 2 are provided inside the ball shaft 1 to cooperate with the first ball 8, and multiple sets of teeth are provided on the outside of the synchronous wheel 4. When the height is moved to a suitable position, the outer bearing sleeve 6 movably connected to the outside of the ball spline sleeve 11 and the multiple sets of first balls 8 provided inside the annular groove provided inside the outer bearing sleeve 6 can cooperate with one end of the ball spline sleeve 11, and the outer bearing sleeve 6 also has a bearing ball track 7, which guides and limits the multiple sets of first balls 8 through the bearing ball track 7;

[0037] For example, a threaded hole 9 is provided inside the ball shaft 1, and multiple groups of threads corresponding to external screws are provided inside the threaded hole 9. The number of second balls 10 is 8 groups. Multiple groups of through holes 3 are provided inside the flange 5. A flange 5 is also fixed above the outer bearing sleeve 6. The outer bearing sleeve 6 and the flange 5 are integrally formed. Multiple groups of through holes 3 that match the outside are provided inside the flange 5. A synchronous wheel 4 is added to the top of the ball spline sleeve 11, and there is no need to add a synchronous wheel 4 on the outer periphery of the ball spline sleeve 11. This design further reduces the size and weight of the component.

[0038] Exemplarily, the outer bearing sleeve 6 and the flange 5 are integrally formed, an annular cavity is defined between the outer bearing sleeve 6 and the ball spline sleeve 11, two groups of cavities are provided inside the ball shaft 1 for cooperating with the first balls 8, the synchronous wheel 4 is located outside the ball shaft 1, and the number of the first balls 8 is 44 groups. The outer bearing sleeve and the flange are integrally formed to prevent the outer bearing sleeve from being separated from the flange during subsequent use, and the annular cavity ensures that the outer bearing sleeve and the ball spline sleeve can be used normally.

[0039] For example, the ball spline sleeve 11 is provided with a groove that matches the first ball 8, the outer side of the outer bearing sleeve 6 is provided with an annular groove that matches the outside, the top and bottom ends of the synchronous wheel 4 are provided with limit rings, the number of threaded holes 9 is four, and an annular gap is provided between the ball shaft 1 and the ball spline sleeve 11, which is different from the original structure that requires the ball spline sleeve 11 to be externally equipped with bearings and flange-like connection devices. In this way, the space required for external standard bearings and flanges can be reduced, and the weight of the entire product can be reduced, so that its own load is reduced and the service life is increased. Moreover, this integrated up and down reciprocating and left and right rotating device saves space, reduces its own weight load, improves life and precision, and saves the time for precision adjustment of multiple components during equipment assembly.

[0040] The working principle of the present invention is as follows: when in use, the ball spline sleeve 11 is moved up and down on the ball shaft 1 by relative force. When the ball spline sleeve 11 moves up and down, the multiple groups of second balls 10 arranged inside it will move along the ball grooves opened inside, and the free rolling of the second balls 10 between the ball spline sleeve 11 enables power to be transmitted from one shaft to another with extremely high efficiency, greatly reducing energy loss. At the same time, the ball shaft 1 is also provided with a straight groove raceway 2 that can cooperate with the second balls 10. While ensuring the movement of the ball spline sleeve 11, it can also play a certain limiting and guiding role to prevent shaking or deviation, which affects subsequent use. When the ball spline sleeve 11 moves, the second balls 10 roll in the raceway, and high-efficiency power transmission is achieved by reducing the friction between the contact surfaces.

[0041] When the height is moved to a suitable position, the outer bearing sleeve 6 movably connected to the outside of the ball spline sleeve 11 and the multiple groups of first balls 8 arranged in the annular slide groove opened in the outer bearing sleeve 6 can cooperate with one end of the ball spline sleeve 11, and the outer bearing sleeve 6 also has a bearing ball path 7 opened in the interior, and the multiple groups of first balls 8 are guided and limited by the bearing ball path 7;

[0042] A flange 5 is fixed above the outer bearing sleeve 6. The outer bearing sleeve 6 and the flange 5 are integrally formed, and a plurality of through holes 3 are provided inside the flange 5 for contact with the outside. A synchronous wheel 4 is added to the top of the ball spline sleeve 11, eliminating the need for a synchronous wheel 4 to be added to the outer periphery of the ball spline sleeve 11. This design further reduces the size and weight of the component.

[0043] Through the above structure, a connection device different from the original structure requiring external bearings and flanges of the ball spline sleeve 11 is achieved. In this way, the space required for external standard bearings and flanges can be reduced, and the weight of the entire product is reduced, so that its own load is reduced and the service life is increased. In addition, this integrated up and down reciprocating and left and right rotating device saves space, reduces its own weight load, improves life and precision, and saves time for precision adjustment of multiple components during equipment assembly.

[0044] 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. A miniature integrated rotating device, comprising a ball shaft (1), characterized in that: The outer side of the ball shaft (1) is connected to a ball spline sleeve (11), the outer side of the ball spline sleeve (11) is connected to an outer bearing sleeve (6), a flange (5) is fixed to the top end of the outer bearing sleeve (6), multiple groups of first balls (8) are arranged between the ball shaft (1) and the ball spline sleeve (11), and a synchronous wheel (4) is arranged at the top end of the ball spline sleeve (11).

2. The micro integrated rotating device according to claim 1, characterized in that: A second ball (10) is provided between the ball spline sleeve (11) and the outer bearing sleeve (6), and a bearing ball track (7) matching the second ball (10) is provided inside the outer bearing sleeve (6).

3. The micro integrated rotating device according to claim 1, characterized in that: Two groups of linear groove rollers (2) matching with the first ball (8) are provided inside the ball shaft (1), and multiple groups of teeth are provided outside the synchronous wheel (4).

4. The micro integrated rotating device according to claim 1, characterized in that: A threaded hole (9) is provided inside the ball spline sleeve (11), and a plurality of groups of threads corresponding to external screws are provided inside the threaded hole (9).

5. The micro integrated rotating device according to claim 2, characterized in that: The number of the second balls (10) is 8 groups, and a plurality of through holes (3) are provided inside the flange (5).

6. The micro integrated rotating device according to claim 1, characterized in that: The outer bearing sleeve (6) and the flange (5) are integrally formed, and an annular cavity is provided between the outer bearing sleeve (6) and the ball spline sleeve (11).

7. The micro integrated rotating device according to claim 1, characterized in that: Two groups of cavities matching with the first balls (8) are provided inside the ball shaft (1), and the synchronous wheel (4) is located outside the ball shaft (1).

8. The micro integrated rotating device according to claim 1, characterized in that: The number of the first balls (8) is 44 groups, and the ball spline sleeve (11) is internally provided with grooves matching the first balls (8).

9. The micro integrated rotating device according to claim 1, characterized in that: An annular groove for matching with the outside is provided on the outside of the outer bearing sleeve (6), and limiting rings are provided at the top and bottom ends of the synchronous wheel (4).

10. The micro integrated rotating device according to claim 4, characterized in that: The number of the threaded holes (9) is four groups, and an annular gap is provided between the ball shaft (1) and the ball spline sleeve (11).

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