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

Abstract

The invention provides a ball linear guide rail with a self-lubricating noise reduction function, and relates to the technical field of ball linear guide rails, the ball linear guide rail comprises a sliding rail playing a sliding supporting role; 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] The present invention mainly relates to the technical field of ball linear guides, and particularly relates to a ball linear guide with self-lubricating and noise-reducing functions. Background Art

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

[0003] The inventor found the following defects during the operation of specific embodiments: Currently, in the case of high-speed operation or long-term working conditions of ball linear guides, the lubricant is prone to loss, volatilization, or contamination, resulting in lubrication failure, and then metal direct contact friction occurs, which not only increases the movement noise but also accelerates the wear of the guide rail.

[0004] It should be noted that the above content belongs to the technical cognition scope of the inventor. Due to the vast and complex technical content in this field, the above content of this application does not necessarily constitute the prior art. Summary of the Invention

[0005] 1. Technical problems to be solved by the invention: The present invention provides a ball linear guide with self-lubricating and noise-reducing functions to solve the technical problems existing in the above background art.

[0006] 2. Technical solutions: To achieve the above object, the technical solution provided by the present invention is: A ball linear guide with self-lubricating and noise-reducing functions, comprising A sliding track, which plays a role of sliding support; A slider assembly, which is internally provided with a ball circulation channel and load balls in contact with the sliding track; Symmetrically arranged end caps, which are detachably connected to the axial two ends of the slider assembly through fasteners, and a rotary channel communicating with the ball circulation channel is provided in the end caps; Symmetrically arranged dust covers, which are detachably connected to the outside of the end caps through a clamping structure, and a storage groove is provided at the joint surface of the dust cover and the end cap; A self-lubricating assembly, which includes a porous oil storage material and a lubricant arranged in the storage groove, and the porous oil storage material has a lubricating end continuously in contact with the surface of the sliding track.

[0007] During the operation of this device, when the slider assembly moves along the sliding track, the load balls roll within the ball circulation channel to achieve low-friction sliding. Meanwhile, the rotary channel within the end cap guides the circulating flow of the balls to ensure smooth movement. The self-lubricating component at the joint of the dust cover and the end cap continuously releases lubricant to the surface of the sliding track through the porous oil storage material, forming a lubricating film to reduce friction resistance and noise. The lubricating end maintains contact pressure with the sliding track to ensure uniform coating of the lubricant, and replenishes the lubricant through capillary action during long-term operation to achieve the self-lubricating function. 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 the service life is extended. At the same time, the lubricant evenly covers the surface of the sliding track, effectively suppressing vibration and noise, and enhancing the smoothness of operation. The integrated design of the dust cover and the self-lubricating component combines the functions of dust prevention and lubrication, with a compact structure and high reliability.

[0008] Further, the porous oil storage material is high-density compressed cotton, and a convex portion is provided on the side of the high-density compressed cotton facing the sliding track, and the convex portion maintains elastic contact with the surface of the sliding track.

[0009] Further, a number of first connection holes are symmetrically provided on the joint surface of the dust cover and the end cap, second connection holes are provided at corresponding positions on both sides of the slider assembly, and the first connection holes and the second connection holes are connected by fasteners.

[0010] Further, at least one pair of clamping protrusions are provided at the joint end of the dust cover and the end cap, and matching clamping grooves are provided at the corresponding positions on the end cap, and the clamping protrusions and the clamping grooves form a positioning connection structure.

[0011] Further, a lower dust-proof member is detachably connected to the bottom of the slider assembly. The lower dust-proof member is made of an elastic material, and a wedge-shaped sealing portion in contact with the side wall of the sliding track is provided on its inner side.

[0012] Further, T-shaped clamping blocks are provided at both ends of the top of the lower dust-proof member, and matching T-shaped clamping grooves are provided at the joint end of the dust cover and the end cap; an installation convex block is provided in the middle of the top surface of the lower dust-proof member, and a corresponding installation bayonet is provided at the bottom of the slider assembly; the T-shaped clamping blocks and the T-shaped clamping grooves, and the installation convex block and the installation bayonet respectively form a detachable clamping fit.

[0013] Further, a circulating diversion component is further included. The circulating diversion component includes circulating grid pieces provided in the rotary channel and a conveying ring connected to its side wall. A guiding surface matching the contour of the load balls is formed on the inner wall of the conveying ring.

[0014] Further, the width of the conveying ring is 2 / 4 - 3 / 4 of the diameter of the load balls.

[0015] Further, an installation groove is provided on the contact side wall between the end cover and the sliding track, and the wire retainer forms an interference fit with the installation groove through elastic buckles on both sides thereof.

[0016] Further, the buckle part of the wire retainer is provided with a wavy elastic structure, and the inner wall of the corresponding installation groove is provided with an anti-retreat arc groove, and the wavy elastic structure and the anti-retreat arc groove form a two-way locking mechanism.

[0017] 3. Beneficial effects: Adopting the technical solution provided by the present invention, compared with the prior art, the following beneficial effects are achieved: The present invention is reasonably designed. Through the continuous contact lubrication between the porous oil storage material and the sliding track, combined with the noise reduction design of the circulating diversion component, the friction coefficient and operation noise are significantly reduced, and the service life of the guide rail is prolonged; The dust-proof cover, end cover and slider assembly with modular design achieve precise positioning through a double connection structure. With the elastic sealing of the lower dust-proof part and the two-way locking of the wire retainer, the overall structure still maintains a stable connection under vibration conditions; All key components adopt a detachable design, and the lubricating parts can be replaced and the dust-proof parts can be cleaned without special tools, greatly shortening the maintenance time, and are particularly suitable for harsh working conditions such as high dust.

[0018] It should be noted that the structures not introduced in the present invention are the same as the prior art or can be implemented by the prior art since they do not involve the design key points and improvement directions of the present invention, and will not be elaborated here. Brief description of the drawings

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is an exploded schematic structural diagram of the present invention; Figure 3 is a schematic structural diagram of the end cover part of the present invention; Figure 4 is a schematic structural diagram of the end cover and dust-proof cover of the present invention; Figure 5 is a schematic partial structural diagram of the present invention; Figure 6 For the present invention Figure 5 is a schematic structural diagram in another direction; Figure 7 is a schematic structural diagram of the installation position of the wire retainer of the present invention.

[0020] Reference numerals: 1. Sliding track; 2. Slide block assembly; 21. Lower dust-proof part; 22. T-shaped clamping block; 23. T-shaped clamping groove; 24. Installation bump; 25. Installation bayonet; 3. Ball circulation channel; 4. Load ball; 5. End cover; 51. Installation groove; 52. Wire retainer; 53. Wave-shaped elastic structure; 54. Anti-retreat arc groove; 6. Rotary channel; 7. Dust-proof cover; 71. First connection hole; 72. Second connection hole; 73. Fastener; 74. Clamping bump; 75. Clamping groove; 8. Storage groove; 9. Porous oil storage material; 91. Protrusion; 10. Circulation diversion assembly; 101. Circulation grid; 102. Delivery ring. Detailed implementation mode

[0021] For the convenience of understanding the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation", "provided with", "provided in", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] It should be noted that for the structures not introduced in the present invention, since they do not involve the design key points and improvement directions of the present invention, the prior arts known to those skilled in the art can be adopted.

[0026] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0027] Refer to the attached Figure 1-7 , a ball linear guide with self-lubricating and noise-reducing functions, comprising a sliding track 1, which plays a role of sliding support; a slider assembly 2, which is internally provided with a ball circulation channel 3 and load balls 4 in contact with the sliding track 1; symmetrically arranged end caps 5, which are detachably connected to the axial two ends of the slider assembly 2 through fasteners 73, and a rotary channel 6 communicating with the ball circulation channel 3 is arranged in the end caps 5; symmetrically arranged dust covers 7, which are detachably connected to the outside of the end caps 5 through a clamping structure, and a storage groove 8 is arranged at the joint surface of the dust covers 7 and the end caps 5; a self-lubricating component, which includes a porous oil storage material 9 and a lubricant arranged in the storage groove 8, and the porous oil storage material 9 has a lubricating end continuously in contact with the surface of the sliding track 1.

[0028] During the working process of the device, when the slider assembly 2 moves along the sliding track 1, the load balls 4 roll in the ball circulation channel 3 to achieve low-friction sliding; at the same time, the rotary channel 6 in the end cap 5 guides the ball to circulate and flow, ensuring the smoothness of the movement; the self-lubricating component at the joint of the dust cover 7 and the end cap 5 continuously releases the lubricant to the surface of the sliding track 1 through the porous oil storage material 9 to form a lubricating film, reducing the frictional resistance and noise; the lubricating end maintains a contact pressure with the sliding track 1 to ensure uniform coating of the lubricant, and replenishes the lubricant through capillary action during long-term operation to achieve the self-lubricating function. Through the continuous oil supply mechanism of the self-lubricating component, the friction coefficient of the guide rail system is significantly reduced, wear is reduced, and the service life is extended. At the same time, the lubricant uniformly covers the surface of the sliding track 1, effectively suppressing vibration and noise and improving the smoothness of operation. The integrated design of the dust cover 7 and the self-lubricating component combines the functions of dust prevention and lubrication, with a compact structure and high reliability.

[0029] The porous oil storage material 9 is a high-density compressed sponge. A convex portion 91 is provided on one side of the high-density compressed sponge facing the sliding track 1. The convex portion 91 is in elastic contact with the surface of the sliding track 1. In this embodiment, the high-density compressed sponge has a high porosity and oil absorption rate, and its interior is impregnated with a long-acting lubricant. Through the elastic contact pressure between the convex portion 91 and the sliding track 1, the continuous release of the lubricant is achieved. The side wall of the storage groove 8 positions the high-density compressed sponge to prevent its axial movement and reduce the volatilization of the lubricant at the same time. It should be noted that those skilled in the art can understand that the porous oil storage material 9 is not limited to the high-density compressed sponge, and equivalent materials with oil storage characteristics such as oil-impregnated sintered metal and porous polymer composites can also be used. These alternative solutions can all achieve the automatic replenishment of the lubricant through the capillary action of the material and fall within the protection scope of this patent.

[0030] A number of first connection holes 71 are symmetrically provided on the joint surface of the dust cover 7 and the end cover 5. Second connection holes 72 are provided at corresponding positions on both sides of the slider assembly 2. The first connection holes 71 and the second connection holes 72 are connected by fasteners 73. In this embodiment, during installation, the combination of the dust cover 7 and the end cover 5 is aligned with the side of the slider assembly 2 to align the first connection holes 71 and the second connection holes 72, and fasteners 73 such as screws are used for fixation. This connection structure is convenient for disassembly and maintenance, and at the same time ensures the positioning accuracy of the dust cover 7 and the end cover 5. The number of the connection holes is preferably 2-4 and is evenly distributed along the joint surface.

[0031] At least one pair of clamping convex blocks 74 are provided at the joint end of the dust cover 7 and the end cover 5. Corresponding clamping grooves 75 are provided at the corresponding positions on the end cover 5. The clamping convex blocks 74 and the clamping grooves 75 form a positioning connection structure. In this embodiment, the matching structure of the clamping convex blocks 74 and the clamping grooves 75 provides a pre-positioning function during assembly to ensure the precise alignment of the dust cover 7 and the end cover 5. During disassembly, first loosen the fastener 73, and pull out the dust cover 7 along the axial direction to separate the clamping structure. Preferably, the cross section of the clamping convex block 74 is trapezoidal, and the corresponding clamping groove 75 is provided with a guiding inclined surface to facilitate self-alignment and disassembly during assembly.

[0032] The bottom of the slider assembly 2 is detachably connected to a lower dust-proof member 21. The lower dust-proof member 21 is made of an elastic material, and a wedge-shaped sealing portion in contact with the side wall of the sliding track 1 is provided on its inner side. In this embodiment, the soft material is made of rubber material, and the bottom wedge-shaped sealing portion abuts against the side wall of the sliding track 1 to reduce the friction during movement and prevent impurities such as dust from entering the sliding part.

[0033] At both ends of the top of the lower dust-proof part 21, there are T-shaped clamping blocks 22, and at the joint end of the dust-proof cover 7 and the end cover 5, there are matching T-shaped clamping grooves 23; in the middle of the top surface of the lower dust-proof part 21, there is an installation convex block 24, and at the bottom of the slider assembly 2, there is a corresponding installation bayonet 25; the T-shaped clamping blocks 22 and the T-shaped clamping grooves 23, and the installation convex block 24 and the installation bayonet 25 respectively form a detachable clamping fit. In this embodiment, please refer to Figure 5 and Figure 6 . During assembly, first align the installation convex block 24 of the lower dust-proof part 21 with the installation bayonet 25 at the bottom of the slider assembly 2 and snap it in, then axially install the combination of the dust-proof cover 7 and the end cover 5 so that the T-shaped clamping block 22 is embedded in the T-shaped clamping groove 23 to complete the positioning. The T-shaped clamping block 22 can bear radial loads, while the installation convex block 24 provides axial limit. Since the lower dust-proof part 21 is made of an elastic material, its T-shaped clamping block 22 can produce appropriate elastic deformation, which can not only compensate for assembly errors but also maintain stable connection strength.

[0034] It further includes a circulating diversion component 10. The circulating diversion component 10 includes circulating grid plates 101 arranged in the rotary channel 6 and a conveying ring 102 connected to its side wall. The inner wall of the conveying ring 102 forms a guiding surface matching the contour of the load balls 4. In this embodiment, the conveying ring 102 is made of engineering plastic, and its guiding surface contacts the load balls 4. When the load balls 4 enter the rotary channel 6 from the ball circulating channel 3, the circulating grid plates 101 guide the balls to be arranged in an orderly manner. At the same time, the conveying ring 102 absorbs the impact energy of the balls through elastic deformation, reducing the collision noise during turning.

[0035] The width of the conveying ring 102 is 2 / 4 - 3 / 4 of the diameter of the load balls 4, which can optimize the ball guiding performance while ensuring the structural strength.

[0036] On the contact side wall of the end cover 5 and the sliding track 1, there is an installation groove 51. The wire retainer 52 forms an interference fit with the installation groove 51 through the elastic buckles on both sides. In this embodiment, the wire retainer 52 is made of spring steel, and its cross-section is concave. After being elastically deformed and snapped into the installation groove 51 during installation, there is a small gap between its inner arc surface and the load balls 4, which can prevent the balls from falling off without affecting the smooth rolling.

[0037] The buckle part of the wire retainer 52 is provided with a wavy elastic structure 53, and the inner wall of the corresponding installation groove 51 is provided with an anti-retreat arc groove 54. The wavy elastic structure 53 and the anti-retreat arc groove 54 form a two-way locking mechanism. In this embodiment, when installing the wire retainer 52, just insert the wavy structure into the corresponding anti-retreat arc groove 54 at the end cover 5, and the precision requirement for the slider assembly 2 is low.

[0038] The above-described embodiments merely represent certain implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A ball linear guide with self-lubricating and noise-reducing functions, characterized in that: including a sliding track (1) for sliding support; a slider assembly (2) with a ball circulation channel (3) and load balls (4) contacting the sliding track (1) inside; end caps (5) symmetrically arranged, detachably connected to the axial ends of the slider assembly (2) by fasteners (73), and a rotary channel (6) communicating with the ball circulation channel (3) is provided inside the end caps (5); dust covers (7) symmetrically arranged, detachably connected to the outside of the end caps (5) by a snap structure, and a storage groove (8) is provided at the joint surface of the dust covers (7) and the end caps (5); a self-lubricating assembly including a porous oil storage material (9) and a lubricant arranged in the storage groove (8), and the porous oil storage material (9) has a lubricating end continuously contacting the surface of the sliding track (1).

2. The ball linear guide rail with self-lubricating and noise-reducing functions according to claim 1, characterized in that: The porous oil storage material (9) is a high-density compressed sponge, and a convex portion (91) is provided on one side of the high-density compressed sponge facing the sliding track (1), and the convex portion (91) is in elastic contact with the surface of the sliding track (1).

3. A ball linear guide rail with a self-lubricating and noise-reducing function according to claim 1, characterized in that: A number of first connection holes (71) are symmetrically provided on the joint surface of the dust cover (7) and the end cap (5), second connection holes (72) are provided at corresponding positions on both sides of the slider assembly (2), and the first connection holes (71) and the second connection holes (72) are connected by fasteners (73).

4. A ball linear guide with self-lubricating and noise-reducing functions according to claim 2, characterized in that: At least one pair of snap bumps (74) is provided at the joint end of the dust cover (7) and the end cap (5), and a matching snap groove (75) is provided at the corresponding position of the end cap (5), and the snap bumps (74) and the snap groove (75) form a positioning connection structure.

5. A ball linear guide with self-lubricating and noise-reducing functions according to claim 1, characterized in that: A lower dust-proof member (21) is detachably connected to the bottom of the slider assembly (2), the lower dust-proof member (21) is made of an elastic material, and a wedge-shaped sealing portion contacting the side wall of the sliding track (1) is provided inside it.

6. The ball linear guide rail with self-lubricating and noise-reducing functions according to claim 5, wherein: T-shaped snap blocks (22) are provided at both ends of the top of the lower dust-proof member (21), and a matching T-shaped card slot (23) is provided at the joint end of the dust cover (7) and the end cap (5); an installation convex block (24) is provided in the middle of the top surface of the lower dust-proof member (21), and a corresponding installation bayonet (25) is provided at the bottom of the slider assembly (2); the T-shaped snap blocks (22) and the T-shaped card slots (23), and the installation convex block (24) and the installation bayonet (25) respectively form a detachable snap fit.

7. A ball linear guide with a self-lubricating and noise-reducing function according to claim 1, characterized in that: A circulation and diversion assembly (10) is further included, and the circulation and diversion assembly (10) includes a circulation grid (101) arranged in the rotary channel (6) and a conveying ring (102) connected to its side wall, and a guiding surface matching the contour of the load balls (4) is formed on the inner wall of the conveying ring (102).

8. A ball linear guide with self-lubricating and noise-reducing functions 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).

9. A ball linear guide rail with a self-lubricating and noise-reducing function according to claim 1, characterized in that: An installation groove (51) is provided on the contact side wall of the end cap (5) and the sliding track (1), and the wire retainer (52) forms an interference fit with the installation groove (51) through elastic buckles on both sides of it.

10. A ball linear guide with a self-lubricating and noise-reducing function according to claim 9, characterized in that: The buckle part of the wire retainer (52) is provided with a wavy elastic structure (53), and the inner wall of the corresponding installation groove (51) is provided with an anti-retreat arc groove (54), and the wavy elastic structure (53) and the anti-retreat arc groove (54) form a two-way locking mechanism.

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