Ball linear guide rail with self-lubricating and noise-reducing functions

Abstract

The utility model provides a ball linear guide rail with self-lubricating and noise-reducing functions, which relates to the technical field of ball linear guide rails and comprises a sliding rail for sliding and supporting; a ball circulating channel and a load ball in contact with the sliding rail are arranged in the sliding block assembly; the symmetrically-arranged end covers are detachably connected to the two axial ends of the sliding block assembly through fasteners, and rotary channels communicated with the ball circulating channel are formed in the end covers; the dust covers are detachably connected to the outer sides of the end covers through clamping structures, and storage grooves are formed in the joint faces of the dust covers and the end covers; the self-lubricating component comprises a porous oil storage material and a lubricant which are arranged in the storage groove, and the porous oil storage material is provided with a lubricating end part which is continuously contacted with the surface of the sliding rail, so that the problems that the lubricant is easy to lose, volatilize or pollute when the existing ball linear guide rail runs at a high speed or works for a long time, the motion noise is increased, and the service life is prolonged are solved. And the abrasion of the guide rail is accelerated.

Description

Technical Field

[0001] This utility model mainly relates to the field of ball linear guide technology, specifically to a ball linear guide with self-lubricating and noise reduction function. Background Technology

[0002] Ball linear guides, as core components of precision mechanical transmission systems, are widely used in high-precision equipment such as CNC machine tools, automated production lines, and medical devices. Their working principle involves the cyclic rolling motion of balls between the guide rail and the slider to achieve high-precision, low-friction linear motion. Currently, most ball linear guides on the market employ external lubrication, maintaining the lubrication state of the moving parts by periodically adding lubricating oil or grease.

[0003] During the operation of specific embodiments, the inventors discovered the following defects:

[0004] In current ball linear guides, lubricant is prone to loss, evaporation, or contamination under high-speed operation or long-term working conditions, leading to lubrication failure and resulting in direct metal-to-metal contact friction. This not only increases motion noise but also accelerates guide wear.

[0005] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0006] 1. The technical problem to be solved by the utility model:

[0007] This utility model provides a ball linear guide with self-lubricating and noise reduction function to solve the technical problems existing in the background art.

[0008] 2. Technical Solution:

[0009] To achieve the above objectives, the technical solution provided by this utility model is: a ball linear guide with self-lubricating and noise-reducing function, comprising...

[0010] The sliding track serves as a sliding support.

[0011] A slider assembly, which has a ball circulation channel and load balls in contact with the sliding track;

[0012] Symmetrically arranged end caps are detachably connected to both axial ends of the slider assembly by fasteners, and the end caps are provided with a rotary channel communicating with the ball circulation channel;

[0013] The symmetrically arranged dust covers are detachably connected to the outside of the end cap via a snap-fit ​​structure, and a storage groove is provided at the joint surface between the dust cover and the end cap;

[0014] The self-lubricating component includes a porous oil storage material and a lubricant disposed in the storage tank, wherein the porous oil storage material has a lubricated end that is in continuous contact with the surface of the sliding track.

[0015] During operation, as the slider assembly moves along the sliding track, the load balls roll within the ball circulation channel, achieving low-friction sliding. Simultaneously, the rotary channel within the end cover guides the ball circulation, ensuring smooth movement. The self-lubricating component at the junction of the dust cover and the end cover continuously releases lubricant to the sliding track surface through a porous oil storage material, forming a lubricating film and reducing frictional resistance and noise. The lubricating end maintains contact pressure with the sliding track, ensuring uniform lubricant coating. During long-term operation, the lubricant is replenished through capillary action, achieving self-lubrication. The continuous oil supply mechanism of the self-lubricating component significantly reduces the friction coefficient of the guide rail system, minimizing wear and extending service life. Simultaneously, the uniform lubricant coverage of the sliding track surface effectively suppresses vibration and noise, improving operational stability. The integrated design of the dust cover and the self-lubricating component combines dustproof and lubrication functions, resulting in a compact structure and high reliability.

[0016] Furthermore, the porous oil storage material is high-density compressed cotton, and the high-density compressed cotton has a protrusion on the side facing the sliding track, and the protrusion maintains elastic contact with the surface of the sliding track.

[0017] Furthermore, a plurality of first connecting holes are symmetrically provided on the mating surface of the dust cover and the end cover, and second connecting holes are provided at corresponding positions on both sides of the slider assembly. The first connecting holes and the second connecting holes are connected by fasteners.

[0018] Furthermore, the dust cover and the end cover are provided with at least one pair of snap-fit ​​protrusions at their joint ends, and the end cover is provided with a matching snap-fit ​​groove at the corresponding position. The snap-fit ​​protrusions and the snap-fit ​​grooves form a positioning connection structure.

[0019] Furthermore, the bottom of the slider assembly is detachably connected to a lower dustproof component, which is made of elastic material and has a wedge-shaped sealing part on its inner side that contacts the side wall of the sliding track.

[0020] Furthermore, the lower dustproof component has T-shaped snap-fit ​​blocks at both ends of its top, and the dustproof cover and the end cover have matching T-shaped slots at their joint ends; the lower dustproof component has a mounting protrusion in the middle of its top surface, and the slider assembly has a corresponding mounting slot at its bottom; the T-shaped snap-fit ​​blocks and T-shaped slots, and the mounting protrusions and mounting slots respectively form detachable snap-fit ​​engagements.

[0021] Furthermore, it also includes a circulation guide assembly, which includes a circulation grid plate disposed in the rotary channel and a conveying ring connected to its side wall, wherein the inner wall of the conveying ring forms a guide surface that matches the profile of the load ball.

[0022] Furthermore, the width of the conveying ring is 2 / 4 to 3 / 4 of the diameter of the load ball.

[0023] Furthermore, the end cap and the contact side wall of the sliding track are provided with a mounting groove, and the wire retainer forms an interference fit with the mounting groove through the elastic buckles on both sides.

[0024] Furthermore, the buckle part of the wire retainer is provided with a wave-shaped elastic structure, and the inner wall of the corresponding mounting groove is provided with an anti-retraction arc groove. The wave-shaped elastic structure and the anti-retraction arc groove form a two-way locking mechanism.

[0025] 3. Beneficial effects:

[0026] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0027] This utility model is reasonably designed. Through continuous contact lubrication between the porous oil storage material and the sliding rail, combined with the noise reduction design of the circulating flow guide component, it significantly reduces the friction coefficient and operating noise, and extends the service life of the guide rail.

[0028] The modular design of the dust cover, end cap and slider assembly achieves precise positioning through a double connection structure. Combined with the elastic seal of the lower dust cover and the bidirectional locking of the wire retainer, the overall structure remains stable under vibration conditions.

[0029] All key components are designed to be detachable, allowing for the replacement of lubricants and cleaning of dustproof parts without the need for special tools. This significantly reduces maintenance time and makes the system particularly suitable for harsh working conditions such as high dust levels.

[0030] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is an exploded view of the structure of this utility model;

[0033] Figure 3 This is a schematic diagram of the end cap structure of this utility model;

[0034] Figure 4This is a schematic diagram of the end cap and dust cover structure of this utility model;

[0035] Figure 5 This is a partial structural schematic diagram of the present invention;

[0036] Figure 6 This utility model Figure 5 A schematic diagram of the structure in another direction;

[0037] Figure 7 This is a schematic diagram of the installation location of the wire retainer of this utility model.

[0038] Figure label:

[0039] 1. Sliding rail; 2. Slider assembly; 21. Lower dustproof component; 22. T-shaped snap-fit ​​block; 23. T-shaped slot; 24. Mounting protrusion; 25. Mounting bayonet; 3. Ball circulation channel; 4. Load-bearing ball; 5. End cap; 51. Mounting groove; 52. Wire retainer; 53. Wave-shaped elastic structure; 54. Anti-reverse arc groove; 6. Rotation channel; 7. Dustproof cover; 71. First connecting hole; 72. Second connecting hole; 73. Fastener; 74. Snap-fit ​​protrusion; 75. Snap-fit ​​groove; 8. Storage slot; 9. Porous oil storage material; 91. Protrusion; 10. Circulation guide assembly; 101. Circulation grid; 102. Conveying ring. Detailed Implementation

[0040] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" 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 according to the specific circumstances.

[0044] It should be noted that the structures not described in this utility model do not involve the design points and improvement directions of this utility model, and can all adopt existing technologies known to those skilled in the art.

[0045] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0046] See attached document Figure 1-7 A ball linear guide with self-lubricating and noise-reducing function, including

[0047] Sliding rail 1 serves as a sliding support;

[0048] The slider assembly 2 has a ball circulation channel 3 and load balls 4 that contact the sliding track 1 inside;

[0049] The symmetrically arranged end caps 5 are detachably connected to both axial ends of the slider assembly 2 by fasteners 73. The end caps 5 are provided with a rotary channel 6 that communicates with the ball circulation channel 3.

[0050] The symmetrically arranged dust covers 7 are detachably connected to the outside of the end cover 5 through a snap-fit ​​structure, and a storage groove 8 is provided at the joint surface between the dust cover 7 and the end cover 5.

[0051] The self-lubricating component includes a porous oil storage material 9 and a lubricant disposed in the storage tank 8, wherein the porous oil storage material 9 has a lubricated end that is in continuous contact with the surface of the sliding track 1.

[0052] During operation, when the slider assembly 2 moves along the sliding track 1, the load balls 4 roll in the ball circulation channel 3, achieving low-friction sliding. Simultaneously, the rotary channel 6 within the end cover 5 guides the ball circulation, ensuring smooth movement. The self-lubricating component at the junction of the dust cover 7 and the end cover 5 continuously releases lubricant to the surface of the sliding track 1 through the porous oil storage material 9, forming a lubricating film and reducing frictional resistance and noise. The lubricating end maintains contact pressure with the sliding track 1, ensuring uniform lubricant coating. During long-term operation, the lubricant is replenished through capillary action, achieving self-lubrication. Through the continuous oil supply mechanism of the self-lubricating component, the friction coefficient of the guide rail system is significantly reduced, wear is decreased, and service life is extended. Simultaneously, the lubricant evenly covers the surface of the sliding track 1, effectively suppressing vibration and noise, and improving operational stability. The integrated design of the dust cover 7 and the self-lubricating component combines dustproof and lubrication functions, resulting in a compact structure and high reliability.

[0053] The porous oil storage material 9 is a high-density compressed cotton. A protrusion 91 is provided on the side of the high-density compressed cotton facing the sliding track 1. The protrusion 91 maintains elastic contact with the surface of the sliding track 1. In this embodiment, the high-density compressed cotton has high porosity and oil absorption rate, and its interior is impregnated with a long-lasting lubricant. The continuous release of the lubricant is achieved through the elastic contact pressure between the protrusion 91 and the sliding track 1. The sidewall of the storage tank 8 limits the high-density compressed cotton, preventing axial movement and reducing lubricant evaporation. It should be noted that those skilled in the art will understand that the porous oil storage material 9 is not limited to high-density compressed cotton; equivalent materials with oil storage properties, such as oil-impregnated sintered metals and porous polymer composite materials, can also be used. These alternative solutions can all achieve automatic lubricant replenishment through the capillary action of the material, falling within the scope of protection of this patent.

[0054] The dust cover 7 and the end cover 5 have a plurality of first connecting holes 71 symmetrically arranged on their mating surfaces. The slider assembly 2 has corresponding second connecting holes 72 on both sides. The first connecting holes 71 and the second connecting holes 72 are connected by fasteners 73. In this embodiment, during installation, the assembly of the dust cover 7 and the end cover 5 is aligned with the side of the slider assembly 2, so that the first connecting holes 71 and the second connecting holes 72 are aligned, and then fixed with screws or other fasteners 73. This connection structure facilitates disassembly and maintenance while ensuring the positioning accuracy of the dust cover 7 and the end cover 5. The number of connecting holes is preferably 2-4, evenly distributed along the mating surface.

[0055] The dust cover 7 and the end cover 5 are joined at least one pair of snap-fit ​​protrusions 74, and the end cover 5 is provided with a matching snap-fit ​​groove 75 at a corresponding position. The snap-fit ​​protrusions 74 and the snap-fit ​​grooves 75 form a positioning connection structure. In this embodiment, the mating structure of the snap-fit ​​protrusions 74 and the snap-fit ​​grooves 75 provides a pre-positioning function during assembly, ensuring precise alignment of the dust cover 7 and the end cover 5. During disassembly, the fasteners 73 are loosened first, and the dust cover 7 is pulled out axially to separate the snap-fit ​​structure. Preferably, the cross-section of the snap-fit ​​protrusions 74 is trapezoidal, and the corresponding snap-fit ​​grooves 75 are provided with guide slopes to facilitate self-alignment and disassembly during assembly.

[0056] The bottom of the slider assembly 2 is detachably connected to the lower dustproof component 21. The lower dustproof component 21 is made of elastic material and has a wedge-shaped sealing part on its inner side that contacts the side wall of the sliding track 1. In this embodiment, the soft material is made of rubber. The bottom wedge-shaped sealing part abuts against the side wall of the sliding track 1 to reduce friction during movement and prevent dust and other impurities from entering the sliding part.

[0057] The lower dustproof component 21 has T-shaped snap-fit ​​blocks 22 at both ends of its top, and the dustproof cover 7 and the end cover 5 have matching T-shaped slots 23 at their joint ends; the lower dustproof component 21 has a mounting protrusion 24 in the middle of its top surface, and the slider assembly 2 has a corresponding mounting slot 25 at its bottom; the T-shaped snap-fit ​​blocks 22 and T-shaped slots 23, and the mounting protrusion 24 and mounting slot 25 respectively form detachable snap-fit ​​engagements. In this embodiment, please refer to... Figure 5 and Figure 6 During assembly, first align the mounting protrusion 24 of the lower dustproof component 21 with the mounting slot 25 at the bottom of the slider assembly 2 and snap it in. Then, install the dustproof cover 7 and end cover 5 assembly axially, so that the T-shaped snap-fit ​​block 22 is embedded in the T-shaped slot 23 for positioning. The T-shaped snap-fit ​​block 22 can withstand radial loads, while the mounting protrusion 24 provides axial limiting. Since the lower dustproof component 21 is made of elastic material, its T-shaped snap-fit ​​block 22 can produce moderate elastic deformation, which can both compensate for assembly errors and maintain stable connection strength.

[0058] It also includes a circulation guide assembly 10, which comprises a circulation grid 101 disposed within the rotary channel 6 and a conveying ring 102 connected to its side wall. The inner wall of the conveying ring 102 forms a guide surface that matches the contour of the load balls 4. In this embodiment, the conveying ring 102 is made of engineering plastic, and its guide surface contacts the load balls 4. When the load balls 4 enter the rotary channel 6 from the ball circulation channel 3, the circulation grid 101 guides the balls to arrange in an orderly manner, while the conveying ring 102 absorbs the impact energy of the balls through elastic deformation, reducing collision noise during turning.

[0059] The width of the conveying ring 102 is 2 / 4 to 3 / 4 of the diameter of the load ball 4, which can optimize the ball guiding performance while ensuring structural strength.

[0060] The end cap 5 and the sliding track 1 have a mounting groove 51 on their contact side wall. The wire retainer 52 forms an interference fit with the mounting groove 51 through elastic buckles on both sides. In this embodiment, the wire retainer 52 is made of spring steel and has a concave cross section. When installed, it is inserted into the mounting groove 51 through elastic deformation. Its inner arc surface maintains a small gap with the load ball 4, which can prevent the ball from falling off and does not affect the smoothness of rolling.

[0061] The wire retainer 52 has a wavy elastic structure 53 at its snap-fit ​​part, and the inner wall of the corresponding mounting groove 51 is provided with an anti-retraction arc groove 54. The wavy elastic structure 53 and the anti-retraction arc groove 54 form a bidirectional locking mechanism. In this embodiment, when the wire retainer 52 needs to be installed, the wavy structure can be inserted into the anti-retraction arc groove 54 at the end cap 5, which reduces the precision requirements of the slider assembly 2.

[0062] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A ball linear guide rail with self-lubricating noise reduction function, characterized in that: The utility model relates to a self-lubricating sliding rail assembly, which comprises a sliding rail (1) and a slider assembly (2) which is movably arranged in the sliding rail (1). The slider assembly (2) is internally provided with a ball circulating channel (3) and load balls (4) which are in contact with the sliding rail (1). Symmetrically arranged end covers (5) are detachably connected to the axial two ends of the slider assembly (2) by fasteners (73), and the end covers (5) are internally provided with rotary channels (6) which are in communication with the ball circulating channel (3). Symmetrically arranged dustproof covers (7) are detachably connected to the outer sides of the end covers (5) by clamping structures, and the dustproof covers (7) are provided with storage grooves (8) at the joint surfaces with the end covers (5). A self-lubricating assembly comprises porous oil storage material (9) arranged in the storage groove (8) and lubricant, and the porous oil storage material (9) has a lubricating end part which is in continuous contact with the surface of the sliding rail (1). The porous oil storage material (9) is high-density compressed cotton, and the high-density compressed cotton is provided with a protruding part (91) on the side facing the sliding rail (1), and the protruding part (91) is in elastic contact with the surface of the sliding rail (1).

2. The self-lubricating noise-reducing ball linear guide rail according to claim 1, characterized in that: A plurality of first connecting holes (71) are symmetrically arranged on the joint surface of the dustproof cover (7) and the end cover (5), and second connecting holes (72) are arranged at the corresponding positions on the two sides of the slider assembly (2), and the first connecting holes (71) and the second connecting holes (72) are connected by fasteners (73).

3. The self-lubricating noise-reducing ball linear guide rail according to claim 1, characterized in that: At least one pair of clamping protrusions (74) are arranged at the joint end of the dustproof cover (7) and the end cover (5), and the end cover (5) is provided with a matching clamping groove (75) at the corresponding position, and the clamping protrusions (74) and the clamping groove (75) form a positioning connection structure.

4. The self-lubricating noise-reducing ball linear guide rail according to claim 2, characterized in that: A lower dustproof part (21) is detachably connected to the bottom of the slider assembly (2), and the lower dustproof part (21) is made of elastic material and is internally provided with a wedge-shaped sealing part which is in contact with the side wall of the sliding rail (1).

5. The self-lubricating noise-reducing ball linear guide rail according to claim 1, characterized in that: T-shaped clamping blocks (22) are arranged at the two ends of the top of the lower dustproof part (21), and the joint end of the dustproof cover (7) and the end cover (5) is provided with a matching T-shaped clamping groove (23); an installation protrusion (24) is arranged at the middle of the top surface of the lower dustproof part (21), and the bottom of the slider assembly (2) is provided with a corresponding installation clamping opening (25); the T-shaped clamping blocks (22) and the T-shaped clamping groove (23), and the installation protrusion (24) and the installation clamping opening (25) respectively form detachable clamping cooperation.

6. The self-lubricating noise-reducing ball linear guide rail according to claim 5, characterized in that: The utility model further comprises a circulating flow guide assembly (10) which comprises circulating lattices (101) arranged in the rotary channel (6) and a conveying ring (102) connected to the side wall of the circulating lattices (101), and the inner wall of the conveying ring (102) forms a guide curved surface which matches the profile of the load balls (4).

7. The self-lubricating noise-reducing ball linear guide rail according to claim 1, characterized in that: The width of the conveying ring (102) is 2 / 4-3 / 4 of the diameter of the load balls (4).

8. The self-lubricating noise-reducing ball linear guide rail according to claim 7, characterized in that: The contact side wall of the end cover (5) and the sliding rail (1) is provided with an installation groove (51), and a steel wire retainer (52) is in interference fit with the installation groove (51) through the elastic buckles on the two sides thereof.

9. The self-lubricating noise-reducing ball linear guide rail according to claim 1, characterized in that: ​ 10. The self-lubricating noise-reducing ball linear guide rail according to claim 9, characterized in that: The buckle part of the steel wire holder (52) is provided with a wavy elastic structure (53), and the inner wall of the corresponding mounting groove (51) is provided with an anti-back arc-shaped groove (54), and the wavy elastic structure (53) and the anti-back arc-shaped groove (54) form a bidirectional locking mechanism.

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