Fixing structure of ball screw elbow circulator

Abstract

The utility model relates to the technical field of ball screws, in particular to a fixing structure of a ball screw elbow circulator, which comprises an elbow circulator and a nut, the elbow circulator is arranged on the outer side wall of the nut of the ball screw, a connecting sleeve is arranged between the elbow circulator and the nut, and the nut is connected with the elbow circulator. Threads are arranged on the outer side wall and the inner side wall of the connecting sleeve, the connecting sleeve is connected to the outer side wall of the nut in a threaded mode, and the end of the elbow circulator is inserted into the connecting sleeve and connected with the connecting sleeve in a threaded mode. According to the elbow circulator, the threads are arranged at the two ends of the elbow circulator, and the connecting sleeve with the internal and external threads is arranged between the elbow circulator and the nut to connect the elbow circulator and the nut, so that the installation stability and the assembly convenience of the elbow circulator can be improved.

Description

Technical Field

[0001] This utility model relates to the field of ball screw technology, and in particular to a fixing structure for a ball screw bending tube circulator. Background Technology

[0002] The bend circulator is a component located on the outside of the ball screw nut, used to circulate the balls between the nut and the screw in a reverse direction.

[0003] To improve installation stability, existing pipe bend circulators often employ a pressure plate structure for reinforcement. During installation, multiple threaded holes are drilled at the flattened nut position, and a pressure plate is installed on the upper part of the bend. This approach requires consideration of whether the multiple threaded holes interfere with the effective circulation channel, and its installation stability is poor. Furthermore, the bend fixing device is too compactly installed on the small-lead nut, and the varying shapes and angles of the bends necessitate custom-made pressure plates, increasing product costs. In terms of processing, machining multiple threaded mounting holes increases processing time, reducing output. Utility Model Content

[0004] This utility model aims to solve one of the problems existing in the background art.

[0005] Therefore, this utility model provides a fixing structure for a ball screw bending circulator.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] A fixing structure for a ball screw bending circulator includes a bending circulator and a nut. The bending circulator is disposed on the outer side wall of the ball screw nut. A connecting sleeve is provided between the bending circulator and the nut. The outer side wall and inner side wall of the connecting sleeve are provided with threads. The connecting sleeve is threadedly connected to the outer side wall of the nut. The end of the bending circulator is inserted into the connecting sleeve and threadedly connected to the connecting sleeve.

[0008] Furthermore, the pipe bending circulator includes a bending section and a connecting section. The connecting section is disposed at both ends of the bending section that bend toward the nut. Two connecting sleeves are provided, and the two connecting sleeves are respectively disposed between the two connecting sections and the nut.

[0009] Furthermore, the end of the connecting part near the bend is the screw-in stop end, and the end away from the bend is the screw-in start end. The portion between the screw-in stop end and the screw-in start end of the connecting part is configured as a threaded section, and the threaded section is threadedly engaged with the internal thread of the connecting sleeve.

[0010] Furthermore, the outer wall of the nut is provided with a threaded hole that mates with the thread of the connecting sleeve, and the bottom of the threaded hole is coaxially provided with a receiving hole that matches the screw-in beginning.

[0011] Furthermore, the nominal diameter of the threaded section is greater than the outer diameter of the screw-in start end and greater than the outer diameter of the screw-in stop end. The receiving hole is connected to the threaded channel inside the nut for ball circulation, and the inner diameter of the receiving hole is adapted to the outer diameter of the screw-in start end.

[0012] Furthermore, the outer wall of the nut is provided with a mounting surface, which is a plane, and the threaded hole is provided on the mounting surface.

[0013] Furthermore, the direction of the thread on the outer side wall of the connecting sleeve is opposite to the direction of the thread on the inner side wall.

[0014] Furthermore, the direction of the thread on the outer side wall of the connecting sleeve is the same as the direction of the thread on the inner side wall.

[0015] Furthermore, an active part is provided on the outer side of the end of the connecting sleeve away from the inside of the nut, and the outer wall of the active part is polygonal.

[0016] Furthermore, the functional part is provided with a regular hexagonal sleeve, and the functional part is coaxially sleeved on the outside of the connecting sleeve and fixedly connected to the connecting sleeve.

[0017] The beneficial effects of this utility model are that threads are provided at both ends of the pipe bending circulator, and a connecting sleeve with internal and external threads is provided between the pipe bending circulator and the nut to connect the pipe bending circulator and the nut, which can improve the stability of the pipe bending circulator installation and the convenience of assembly; during processing, the number of threaded holes on the outer wall of the nut can be reduced, reducing the impact on the internal thread groove of the nut, and it can be adapted to pipe bending circulators with different shapes and angles. There is no need to design and process a pressure plate adapted to the pipe bending circulator, saving design time. The connecting sleeve can be produced and used as a standard part, reducing costs. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the assembly relationship between the bend circulator and the nut in this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the bend tube circulator in this utility model.

[0021] Figure 3 This is a schematic diagram of the connecting sleeve in this utility model.

[0022] Figure 4 This is a structural schematic diagram showing the positional relationship between the connecting sleeve and the nut in this utility model.

[0023] Figure 5 It is used to embody Figure 4Enlarged view of part A showing the connection relationship between the connecting sleeve and the connecting part.

[0024] In the diagram: 1. Pipe bender; 11. Bending section; 12. Connecting section; 13. Screw-in start end; 14. Threaded section; 15. Screw-in stop end; 2. Nut; 21. Mounting surface; 22. Threaded hole; 23. Receiving hole; 3. Connecting sleeve; 31. Actuating part. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Reference Figure 1 A fixing structure for a ball screw bending circulator includes a bending circulator 1 and a nut 2. The bending circulator 1 is mounted on the outer wall of the nut 2. The fixing structure for the bending circulator 1 includes the bending circulator 1, a connecting sleeve 3, and the nut 2.

[0029] Reference Figure 2The pipe bending circulator 1 includes a bending portion 11 and a connecting portion 12. The inner side wall of the connecting portion 12 away from the bending portion 11 is provided with a ball guide surface that communicates with and is adapted to the threaded groove for ball circulation inside the nut 2. The connecting portion 12 is located at both ends of the bending portion 11 that bend towards the nut 2. The end of the connecting portion 12 near the bending portion 11 is a screw-in stop end 15, and the end away from the bending portion 11 is a screw-in start end 13. A threaded section 14 is provided between the screw-in stop end 15 and the screw-in start end 13. The nominal diameter of the threaded section 14 is greater than the outer diameter of the screw-in start end 13 and greater than the outer diameter of the screw-in stop end 15.

[0030] Reference Figure 1 , 3 There are two connecting sleeves 3, which are used to connect the two connecting parts 12 to the nuts 2 respectively. The outer and inner walls of the connecting sleeves 3 are threaded, and the threads on the inner and outer walls have the same direction of rotation. The outer wall of the nut 2 is milled with a mounting surface 21, which is a plane parallel to the axis of the nut 2. The mounting surface 21 is provided with a threaded hole 22 for connecting the connecting sleeves 3. The bottom of the threaded hole 22 is coaxially provided with a receiving hole 23. The inner diameter of the receiving hole 23 is adapted to the outer diameter of the screw-in starting end 13. The receiving hole 23 is connected to the threaded channel inside the nut 2 for ball circulation.

[0031] Reference Figure 4 , 5 First, connect the connecting sleeve 3 to the connecting part 12. Screw the connecting sleeve 3 from the starting end 13 to the stopping end 15 (at this time, the stopping end 15 has no threads). Then, insert the connecting part 12 and the connecting sleeve 3 into the threaded hole 22 and start to tighten the connecting sleeve 3 downwards so that the connecting part 12, the connecting sleeve 3 and the threaded hole 22 are tightly connected by threads.

[0032] Since the outer diameter of the screw-in stop 15 is smaller than the nominal diameter of the threaded section 14, the diameter of the receiving hole 23 is smaller, which can increase the distance d between the receiving hole 23 and the channel and reduce the interference between the receiving hole 23 and the threaded channel.

[0033] It should be noted that the end of the connecting sleeve 3 furthest from the inside of the nut 2 may be provided with an actuating part 31. The actuating part 31 is a regular hexagonal sleeve coaxial with the connecting sleeve 3, and is coaxially sleeved on the outside of the connecting sleeve 3 and fixedly connected to the connecting sleeve 3. Preferably, the connecting sleeve 3 and the actuating part 31 are integrally formed. This facilitates the use of a wrench or other tools to rotate the connecting sleeve 3 to tighten it toward the nut 2, thereby fixing the connecting sleeve 3 and the pipe bending circulator 1.

[0034] Example 2

[0035] The difference from Embodiment 1 is that the threads on the inner and outer walls of the connecting sleeve 3 are rotated in opposite directions.

[0036] During installation, first screw the connecting sleeve 3 into the threaded hole 22, so that part of the connecting sleeve 3 enters the threaded hole 22. Then, simultaneously insert the two connecting parts 12 into the corresponding connecting sleeves 3. At the same time, rotate the two connecting sleeves 3, so that while the connecting sleeves 3 continue to be screwed into the threaded hole 22, the connecting parts 12 also move towards the inside of the nut 2 as their threaded sections 14 engage with the internal threads of the connecting sleeves 3, until the connecting parts 12 are screwed into the receiving hole 23 by the stop end 15, thus completing the installation between the pipe bending circulator 1 and the nut 2.

[0037] This application uses a connecting sleeve 3 with internal and external threads to connect the pipe bend circulator 1 and the nut 2, which can improve the stability of the pipe bend circulator 1 during installation. Furthermore, compared to designing a pressure plate according to the shape of the pipe bend, the connecting sleeve 3 can accommodate pipe bend circulators 1 of different models and angles, reducing the cost of pipe bend installation.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A fixing structure for a ball screw bending circulator, comprising a bending circulator (1) and a nut (2), wherein the bending circulator (1) is disposed on the outer side wall of the ball screw nut (2), characterized in that, A connecting sleeve (3) is provided between the pipe bending circulator (1) and the nut (2). The outer and inner walls of the connecting sleeve (3) are provided with threads. The connecting sleeve (3) is threadedly connected to the outer wall of the nut (2). The end of the pipe bending circulator (1) is inserted into the connecting sleeve (3) and threadedly connected to the connecting sleeve (3).

2. The fixing structure of the ball screw bending circulator according to claim 1, characterized in that, The pipe bending circulator (1) includes a bending part (11) and a connecting part (12). The connecting part (12) is disposed at both ends of the bending part (11) that bend toward the nut (2). There are two connecting sleeves (3), which are respectively disposed between the two connecting parts (12) and the nut (2).

3. The fixing structure of the ball screw bending circulator according to claim 2, characterized in that, The end of the connecting part (12) near the bend (11) is the screw-in stop end (15), and the end away from the bend (11) is the screw-in start end (13). The part between the screw-in stop end (15) and the screw-in start end (13) of the connecting part (12) is set as a threaded section (14), and the threaded section (14) is threaded with the internal thread of the connecting sleeve (3).

4. The fixing structure of the ball screw bending circulator according to claim 3, characterized in that, The outer wall of the nut (2) is provided with a threaded hole (22) that is threaded to engage with the connecting sleeve (3), and the bottom of the threaded hole (22) is coaxially provided with a receiving hole (23) that is adapted to the screw-in beginning end (13).

5. The fixing structure of the ball screw bending circulator according to claim 4, characterized in that, The nominal diameter of the threaded section (14) is greater than the outer diameter of the screw-in start end (13) and greater than the outer diameter of the screw-in stop end (15). The receiving hole (23) is connected to the threaded channel inside the nut (2) for ball circulation. The inner diameter of the receiving hole (23) is adapted to the outer diameter of the screw-in start end (13).

6. The fixing structure of the ball screw bending circulator according to claim 4, characterized in that, The nut (2) has a mounting surface (21) on its outer side wall. The mounting surface (21) is a plane, and the threaded hole (22) is located on the mounting surface (21).

7. The fixing structure of the ball screw bending circulator according to claim 1, characterized in that, The direction of the thread on the outer side wall of the connecting sleeve (3) is opposite to the direction of the thread on the inner side wall.

8. The fixing structure of the ball screw bending circulator according to claim 1, characterized in that, The direction of the thread on the outer side wall of the connecting sleeve (3) is the same as the direction of the thread on the inner side wall.

9. The fixing structure of the ball screw bending circulator according to claim 1, characterized in that, The connecting sleeve (3) has an action part (31) on the outer side of one end away from the inside of the nut (2), and the outer wall of the action part (31) is polygonal.

10. The fixing structure of the ball screw bending tube circulator according to claim 9, characterized in that, The functional part (31) is provided with a regular hexagonal sleeve, and the functional part (31) is coaxially sleeved on the outside of the connecting sleeve (3) and fixedly connected to the connecting sleeve (3).

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