Ball screw locking and positioning device

Abstract

The invention relates to the technical field of ball screw cutting, in particular to a ball screw locking and positioning device which comprises a screw set and a thread sleeve set, the screw set comprises a thread part and a main rod part, the main rod part is arranged at one end of the thread part, and the main rod part and the thread part are integrally formed; the screw sleeve group comprises a sleeve seat and an internal thread pipe sleeve matched with the thread part, the sleeve seat is arranged on the screw rod group in a sleeving manner, the internal thread pipe sleeve is arranged on one side of the sleeve seat, the internal thread pipe sleeve and the sleeve seat are integrally formed, and a locking assembly is mounted at the end, away from the sleeve seat, of the internal thread pipe sleeve. The locking assembly is installed on the threaded sleeve set, and the locking assembly is designed to be of a structure in which the positioning base, the clamping frames and the connecting set are matched, so that it is guaranteed that an operator can adjust the distance between the clamping frames at the two ends by rotating the center threaded rod during use; when locking is needed, the clamping frames at the two ends can be clamped and fixed to the screw set.

Description

Technical Field

[0001] The present invention relates to the technical field of ball screws, and particularly relates to a ball screw locking and positioning device. Background Art

[0002] A ball screw is a transmission device that converts rotational motion into linear motion. The main structure of a conventional ball screw includes a screw rod, a nut sleeve, and balls, and it has the advantages of high transmission efficiency, smooth transmission, small wear, long service life, and high precision. Therefore, ball screws are widely used in various industrial equipment and precision instruments.

[0003] The Chinese patent with the publication number CN215487486U discloses a ball screw, including a ball screw body. The ball screw body includes a base layer, and a protective layer is fixedly connected to the outer surface of the base layer. A waterproof layer is fixedly connected to the outer surface of the protective layer, and a wear-resistant layer is fixedly connected to the outer surface of the waterproof layer. The protective layer includes a corrosion-resistant layer, an anti-static layer, and a high-temperature resistant layer. The bottom of the corrosion-resistant layer is fixedly connected to the top of the anti-static layer, and the bottom of the anti-static layer is fixedly connected to the top of the high-temperature resistant layer.

[0004] In view of the above related technologies, it is found that the existing ball screws do not have a corresponding locking and positioning structure during use, so the situation of self-rotation is likely to occur during use, which will greatly affect the use accuracy in actual use. Summary of the Invention

[0005] The present invention solves the problems in the related technologies and provides a ball screw locking and positioning device.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions: A ball screw locking and positioning device includes a screw rod group and a nut sleeve group. The screw rod group includes a threaded portion and a main rod portion. The main rod portion is arranged at one end of the threaded portion, and the main rod portion is integrally formed with the threaded portion. The nut sleeve group includes a socket and an internal threaded tube sleeve that matches the threaded portion. The socket is sleeved on the screw rod group, and the internal threaded tube sleeve is arranged on one side of the socket, and the internal threaded tube sleeve is integrally formed with the socket. A locking assembly is installed at one end of the internal threaded tube sleeve away from the socket, and the locking assembly is fixedly connected to the side surface of the internal threaded tube sleeve through a bolt.

[0007] By adopting the above technical solution, the main rod part is arranged at one end of the threaded part by setting the structure of the screw rod group, so that it is convenient to better connect with the external driving mechanism through the main rod part during use. At the same time, by setting the structure of the screw sleeve group, it is ensured that the inner threaded pipe sleeve on the socket is connected to the threaded part of the screw rod group, and the setting of the socket facilitates the connection and fixation with the external setting. And in order to ensure that the screw sleeve group can be stably positioned on the screw rod group, a locking component is installed on the inner threaded pipe sleeve, and when it is not necessary to move, the locking component can be used to lock with the screw rod group.

[0008] As a preferred solution, a plurality of connection holes are symmetrically formed on the socket, and a limiting ring is installed in the socket, and the limiting ring is fixedly connected to the socket.

[0009] By adopting the above technical solution, by symmetrically opening a plurality of connection holes on the socket, it is convenient for the external setting to be fixedly connected to the socket through bolts. At the same time, by installing a limiting ring in the socket, it is ensured that the connection between the socket and the screw rod group is more stable.

[0010] As a preferred solution, the locking component includes a positioning seat, a clamping frame and a connecting group. The positioning seat is fixedly installed on the inner threaded pipe sleeve. The number of the clamping frames is two, and the two clamping frames are symmetrically arranged on the positioning seat. One end of the clamping frame is rotatably connected to the positioning seat, and the connecting group is installed at the other end of the clamping frame, and the connecting group is used to make the other ends of the two clamping frames approach each other.

[0011] By adopting the above technical solution, by setting the structure of the locking component, it is ensured that two oppositely arranged clamping frames are installed on the positioning seat during use. In this way, when locking is required, the two clamping frames can be clamped and fixed on the screw rod group to ensure that the screw sleeve group cannot move on the screw rod group. And through the setting of the connecting group, it is ensured that the distance between the two clamping frames can be better controlled, so as to ensure that the two clamping frames can be stably clamped and fixed.

[0012] As a preferred solution, the positioning seat includes a seat plate, a positioning block and a connecting shaft for the clamping frame to be rotatably installed. The positioning block is arranged on the outer side surface of the seat plate. The number of the connecting shafts is two, and the two connecting shafts are symmetrically arranged on both sides of the positioning block, and the seat plate, the positioning block and the connecting shaft are integrally formed.

[0013] By adopting the above technical solution, by setting the structure of the positioning seat, it is ensured that the positioning block is arranged on the seat plate. The positioning block is convenient for stably limiting when the clamping frame is clamped and locked. At the same time, by setting the connecting shaft, it is ensured that the clamping frame can be stably positioned and installed, and it is convenient for the clamping frame to rotate and adjust the use angle during use.

[0014] As a preferred solution, a number of positioning grooves are evenly formed in the circumferential direction on the seat plate. An arc-shaped groove is provided in the positioning groove, and the arc-shaped groove is a through groove.

[0015] By adopting the above technical solution, the installation bolts can be conveniently and better fixedly connected with the internal thread sleeve through the arrangement of the positioning groove and the arc-shaped groove.

[0016] As a preferred solution, the clamping bracket includes an outer arc seat, a wear-resistant sheet, and a limit seat corresponding to the connection group. A number of limit card slots are evenly formed on the inner side surface of the outer arc seat. The wear-resistant sheet is arranged on the inner side surface of the outer arc seat, and an installation bracket corresponding to the limit card slot is integrally formed on the wear-resistant sheet. A shaft hole matched with the connecting shaft is formed at one end of the outer arc seat, and the limit seat is integrally formed at the other end of the outer arc seat. A connecting middle groove is also formed on the limit seat.

[0017] By adopting the above technical solution, through the structural arrangement of the clamping bracket, it is ensured that the wear-resistant sheet can be installed through the outer arc seat during use. During actual use, the wear-resistant sheet can be in contact with the screw group, and the two are locked with each other through the friction between them. Moreover, the wear-resistant sheet can be detached from the outer arc seat separately, which is convenient for regular replacement. At the same time, through the arrangement of the limit seat and the connection group, the connection group can be stably positioned and installed.

[0018] As a preferred solution, the connection group includes a V-shaped frame, a central screw, and an arc-shaped pressing plate. The central screw is installed in the middle of the V-shaped frame, and the head of the central screw is rotatably connected to the V-shaped frame. The arc-shaped pressing plate is sleeved on the central screw, and an internal thread sleeve in threaded cooperation with the central screw is fixedly installed on the arc-shaped pressing plate. A polygonal nut is also fixedly installed at the outer end of the central screw.

[0019] By adopting the above technical solution, through the structural arrangement of the connection group, it is ensured that the V-shaped frame and the arc-shaped pressing plate can be clamped at the inner and outer ends of the limit seat during use. Then, during use, the distance between the V-shaped frame and the arc-shaped pressing plate can be adjusted through the central screw, so as to realize buckling the two clamping brackets together. Through the arrangement of the internal thread sleeve and the polygonal nut, it is ensured that the adjustment can be carried out by rotating the central screw during adjustment, and the operation is very inconvenient.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: By installing a locking component on the screw sleeve group and designing the locking component into a structure in which a positioning seat, a clamping bracket and a connecting group cooperate, it is ensured that during use, the operator can adjust the distance between the two clamping brackets by rotating the central screw. When locking is required, the two clamping brackets can be used to clamp and fix on the screw group, so that rapid positioning can be achieved during use, and the situation of self-rotation will not occur. Furthermore, the use accuracy of the roller screw can be greatly increased, and it has the advantages of convenient operation and stable use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a front view of the overall structure of the present invention; Figure 3 is a perspective view of the locking component of the present invention; Figure 4 is Figure 3 a perspective view of the positioning seat of the device shown; Figure 5 is Figure 3 a perspective view of the clamping bracket of the device shown; Figure 6 is Figure 3 a perspective view of the connecting group of the device shown.

[0022] In the figure: 1. Screw group; 11. Thread part; 12. Main rod part; 2. Screw sleeve group; 21. Sleeve seat; 211. Connecting hole; 212. Limiting ring; 22. Inner threaded pipe sleeve; 3. Locking component; 31. Positioning seat; 311. Seat plate; 312. Positioning block; 313. Connecting shaft; 314. Positioning groove; 315. Arc groove; 32. Clamping bracket; 321. Outer arc seat; 322. Anti-wear sheet; 323. Limiting seat; 324. Limiting card slot; 325. Mounting bracket; 326. Shaft hole; 327. Connecting middle groove; 33. Connecting group; 331. V-shaped frame; 332. Central screw; 333. Arc-shaped pressing plate; 334. Inner screw sleeve; 335. Polygonal nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way restrictive of the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangements of the components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not require further discussion in subsequent drawings.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0027] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. can be used here to describe the spatial positional relationship between a device or feature shown in a figure and other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the attached figure is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "beneath" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0028] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus cannot be construed as limiting the protection scope of the present invention.

[0029] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in

[0030] Refer to Figure 1 and Figure 2 a ball screw locking and positioning device includes a screw rod group 1 and a screw sleeve group 2. The screw rod group 1 includes a threaded portion 11 and a main rod portion 12. The main rod portion 12 is provided at one end of the threaded portion 11, and the main rod portion 12 is integrally formed with the threaded portion 11. The screw sleeve group 2 includes a socket 21 and an internal threaded tube sleeve 22 that cooperates with the threaded portion 11. The socket 21 is sleeved on the screw rod group 1. The internal threaded tube sleeve 22 is provided on one side of the socket 21, and the internal threaded tube sleeve 22 is integrally formed with the socket 21. A locking assembly 3 is installed at one end of the internal threaded tube sleeve 22 away from the socket 21. The locking assembly 3 is fixedly connected to the side surface of the internal threaded tube sleeve 22 through a bolt. By setting the structure of the screw rod group 1, the main rod portion 12 is provided at one end of the threaded portion 11, which facilitates better connection with an external driving mechanism during use. At the same time, by setting the structure of the screw sleeve group 2, it is ensured that the socket 21 and the internal threaded tube sleeve 22 are connected to the threaded portion 11 of the screw rod group 1, and the setting of the socket 21 facilitates connection and fixation with an external setting. And in order to ensure that the screw sleeve group 2 can be stably positioned on the screw rod group 1, a locking assembly 3 is installed on the internal threaded tube sleeve 22, and when movement is not required, the locking assembly 3 can be used to lock with the screw rod group 1.As shown, a number of connecting holes 211 are symmetrically formed on the socket 21, and a limiting ring 212 is installed in the socket 21, and the limiting ring 212 is fixedly connected to the socket 21. By symmetrically forming a number of connecting holes 211 on the socket 21, it is convenient for external devices to be fixedly connected to the socket 21 through bolts. At the same time, by installing the limiting ring 212 in the socket 21, the connection between the socket 21 and the screw group 1 is ensured to be more stable.

[0031] Referring to Figure 3 and Figure 4 As shown, the locking assembly 3 includes a positioning seat 31, a clamping frame 32 and a connecting group 33. The positioning seat 31 is fixedly installed on the inner threaded sleeve 22. The number of the clamping frames 32 is two, and the two clamping frames 32 are symmetrically arranged on the positioning seat 31. One end of the clamping frame 32 is rotatably connected to the positioning seat 31. The connecting group 33 is installed at the other end of the clamping frame 32, and the connecting group 33 is used to make the other ends of the two clamping frames 32 approach each other. By setting the structure of the locking assembly 3, two oppositely arranged clamping frames 32 are installed on the positioning seat 31 during use, so that when locking is required, the two clamping frames 32 can be clamped and fixed on the screw group 1, ensuring that the screw sleeve group 2 cannot move on the screw group 1. And through the setting of the connecting group 33, the distance between the two clamping frames 32 can be better controlled, so as to ensure that the two clamping frames 32 can be stably clamped and fixed. The positioning seat 31 includes a seat plate 311, a positioning block 312 and a connecting shaft 313 for rotatably installing the clamping frame 32. The positioning block 312 is arranged on the outer side surface of the seat plate 311. The number of the connecting shafts 313 is two, and the two connecting shafts 313 are symmetrically arranged on both sides of the positioning block 312, and the seat plate 311, the positioning block 312 and the connecting shaft 313 are integrally formed. By setting the structure of the positioning seat 31, the positioning block 312 is arranged on the seat plate 311, and the positioning block 312 is used to stably limit the clamping and locking of the clamping frame 32. At the same time, through the setting of the connecting shaft 313, the clamping frame 32 can be stably positioned and installed, so that the clamping frame 32 can be rotated and adjusted to the use angle during use. A number of positioning grooves 314 are evenly formed on the seat plate 311 along the circumferential direction, and an arc groove 315 is arranged in the positioning groove 314, and the arc groove 315 is a through groove. By setting the positioning groove 314 and the arc groove 315, it is convenient to install bolts to be fixedly connected to the inner threaded sleeve 22 better.

[0032] Referring to Figure 3 and Figure 5As shown in the figure, the clamping frame 32 includes an outer arc seat 321, a wear-resistant sheet 322, and a limit seat 323 corresponding to the connection group 33. A number of limit card slots 324 are evenly arranged on the inner side surface of the outer arc seat 321. The wear-resistant sheet 322 is arranged on the inner side surface of the outer arc seat 321, and an installation frame 325 corresponding to the limit card slots 324 is integrally formed on the wear-resistant sheet 322. A shaft hole 326 matched with the connecting shaft 313 is provided at one end of the outer arc seat 321, and the limit seat 323 is integrally formed at the other end of the outer arc seat 321. A connecting middle groove 327 is also provided on the limit seat 323. By setting the structure of the clamping frame 32, it is ensured that the wear-resistant sheet 322 can be installed through the outer arc seat 321 during use. During actual use, the wear-resistant sheet 322 can be in contact with the screw group 1, and the two are locked to each other through the friction force therebetween. Moreover, the wear-resistant sheet 322 can be separately disassembled from the outer arc seat 321, which is convenient for regular replacement. At the same time, by setting the limit seat 323 and the connection group 33, it is convenient for the connection group 33 to be stably positioned and installed.

[0033] Refer to Figure 3 and Figure 6 As shown in the figure, the connection group 33 includes a V-shaped frame 331, a central screw 332, and an arc-shaped pressing plate 333. The central screw 332 is installed in the middle of the V-shaped frame 331, and the head of the central screw 332 is rotatably connected to the V-shaped frame 331. The arc-shaped pressing plate 333 is sleeved on the central screw 332, and an inner nut 334 threadedly matched with the central screw 332 is fixedly installed on the arc-shaped pressing plate 333. A polygonal nut 335 is also fixedly installed at the outer end of the central screw 332. By setting the structure of the connection group 33, it is ensured that the V-shaped frame 331 and the arc-shaped pressing plate 333 can be clamped at the inner and outer ends of the limit seat 323 during use. Then, during use, the distance between the V-shaped frame 331 and the arc-shaped pressing plate 333 can be adjusted through the central screw 332, so as to realize buckling the two clamping frames 32 together. By setting the inner nut 334 and the polygonal nut 335, it is ensured that the adjustment can be carried out by rotating the central screw 332 during adjustment, and the operation is very inconvenient.

[0034] In this embodiment, when actually in use, the central screw 332 is rotated reversely, thereby increasing the distance between the V-shaped frame 331 and the arc-shaped pressing plate 333. In this way, it can be ensured that the clamping frames 32 at both ends will not be locked with each other, so that the sleeve group 2 can move freely on the screw group 1. When locking is required, the central screw 332 can be rotated forward to reduce the distance between the V-shaped frame 331 and the arc-shaped pressing plate 333. The two side edges of the V-shaped frame 331 can quickly squeeze the two end limit seats 323 together, so as to drive the clamping frames 32 at both ends to quickly clamp on the screw group 1, so that it can be ensured that the screw group 1 and the sleeve group 2 are locked with each other and can be quickly positioned when not moving.

[0035] The above is a preferred embodiment of the present invention. Those skilled in the art to which the present invention pertains can also make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the above specific embodiments, and any obvious improvements, substitutions or variations made by those skilled in the art on the basis of the present invention all fall within the protection scope of the present invention.

Claims

1. A ball screw locking and positioning device, comprising a screw assembly (1) and a screw sleeve assembly (2), characterized in that: The screw rod assembly (1) comprises a threaded portion (11) and a main rod portion (12), the main rod portion (12) being arranged at one end of the threaded portion (11), and the main rod portion (12) and the threaded portion (11) being integrally formed, the screw sleeve assembly (2) comprising a sleeve seat (21) and an internally threaded sleeve (22) matching the threaded portion (11), the sleeve seat (21) being sleeved on the screw rod assembly (1), the internally threaded sleeve (22) being arranged on one side of the sleeve seat (21), and the internally threaded sleeve (22) and the sleeve seat (21) being integrally formed, and a locking assembly (3) being installed at one end of the internally threaded sleeve (22) away from the sleeve seat (21), and the locking assembly (3) being fixedly connected to the side of the internally threaded sleeve (22) by means of bolts.

2. A ball screw locking and positioning device according to claim 1, characterized in that: A plurality of connection holes (211) are symmetrically provided on the sleeve (21), and a limit ring (212) is installed in the sleeve (21), wherein the limit ring (212) is fixedly connected to the sleeve (21).

3. A ball screw locking and positioning device according to claim 2, characterized in that: The locking assembly (3) comprises a positioning seat (31), a clamping frame (32) and a connecting group (33); the positioning seat (31) is fixedly mounted on the internal threaded pipe sleeve (22); there are two clamping frames (32), and the two clamping frames (32) are symmetrically arranged on the positioning seat (31); one end of the clamping frame (32) is rotatably connected to the positioning seat (31); the connecting group (33) is mounted on the other end of the clamping frame (32), and the connecting group (33) is used to allow the other ends of the two clamping frames (32) to approach each other.

4. A ball screw locking and positioning device according to claim 3, characterized in that: The positioning seat (31) comprises a seat plate (311), a positioning block (312) and a connecting shaft (313) for rotatably mounting the clamping frame (32); the positioning block (312) is arranged on the outer side of the seat plate (311); there are two connecting shafts (313), and the two connecting shafts (313) are symmetrically arranged on both sides of the positioning block (312); and the seat plate (311), the positioning block (312) and the connecting shaft (313) are integrally formed.

5. A ball screw locking and positioning device according to claim 4, characterized in that: A plurality of positioning grooves (314) are evenly formed on the seat plate (311) along the circumferential direction, and an arc-shaped groove (315) is provided in the positioning groove (314), and the arc-shaped groove (315) is a through groove.

6. A ball screw locking and positioning device according to claim 5, characterized in that: The clamping frame (32) comprises an outer arc seat (321), an anti-wear sheet (322) and a limit seat (323) corresponding to the connection group (33); a plurality of limit slots (324) are evenly arranged on the inner side surface of the outer arc seat (321); the anti-wear sheet (322) is arranged on the inner side surface of the outer arc seat (321); and a mounting frame (325) corresponding to the limit slots (324) is integrally formed on the anti-wear sheet (322); an axial hole (326) matching the connection shaft (313) is arranged at one end of the outer arc seat (321); and the limit seat (323) is integrally formed on the other end of the outer arc seat (321); and a connecting middle groove (327) is also arranged on the limit seat (323).

7. A ball screw locking and positioning device according to claim 6, characterized in that: The connection group (33) comprises a V-shaped frame (331), a central screw (332) and an arc-shaped pressing plate (333); the central screw (332) is mounted in the middle of the V-shaped frame (331), and the head of the central screw (332) is rotatably connected to the V-shaped frame (331); the arc-shaped pressing plate (333) is sleeved on the central screw (332), and an inner screw sleeve (334) threadably matched with the central screw (332) is fixedly mounted on the arc-shaped pressing plate (333); and a polygonal nut (335) is also fixedly mounted on the outer end of the central screw (332).

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