Anti-backlash structure of T-shaped guide rail and T-shaped guide rail

Abstract

The utility model discloses a clearance eliminating structure of a T-shaped guide rail and the T-shaped guide rail, relates to the technical field of guide rails, and solves the technical problem that rigidity is affected due to the fact that a clearance exists between a T-shaped sliding block and a T-shaped groove in the T-shaped guide rail. The T-shaped guide rail comprises a T-shaped sliding block and a sliding seat, a T-shaped groove is formed in the sliding seat, the anti-backlash structure comprises an anti-attrition sliding piece and at least one elastic piece, the anti-attrition sliding piece is connected to the bottom face of the T-shaped sliding block, and the bottom face of the T-shaped sliding block is opposite to the groove bottom face of the T-shaped groove; the elastic piece is connected between the anti-attrition sliding piece and the T-shaped sliding block; according to the T-shaped guide rail, a gap between the T-shaped sliding block and the T-shaped groove is eliminated, swing of the T-shaped sliding block in the running process is reduced, and then the running precision of the T-shaped guide rail is improved; according to the T-shaped guide rail, the anti-friction sliding piece replaces a T-shaped sliding block to make contact with the bottom face of the T-shaped groove, when abrasion occurs after long-time operation, only the anti-friction sliding piece needs to be replaced, the whole T-shaped sliding block does not need to be replaced, and the T-shaped guide rail has extremely high maintainability.

Description

Technical Field

[0001] The utility model belongs to the technical field of guide rails, relates to the anti-play technology of guide rails, and specifically relates to an anti-play structure of a T-shaped guide rail and a T-shaped guide rail. Background Art

[0002] A guide rail refers to a groove or ridge made of metal or other materials, which can bear, fix, guide a moving device or equipment and reduce its friction. The longitudinal grooves or ridges on the surface of the guide rail are used to guide and fix machine components, special equipment, instruments, etc. The guide rail is also called a slide rail, a linear guide rail, a linear slide rail, and is used in linear reciprocating motion occasions. It has a higher rated load than a linear bearing, and can also bear a certain torque, and can achieve high-precision linear motion under high load.

[0003] T-shaped guide rails are widely used in the automation field due to their low cost and simple processing. However, there is a certain gap between the T-shaped groove and the mating T-shaped slider. Due to the existence of the gap, the stiffness of the T-shaped slider is relatively low, and it cannot be used in some high-precision occasions. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems existing in the prior art; for this purpose, the utility model provides an anti-play structure of a T-shaped guide rail, which is used to solve the technical problem that the gap in the T-shaped guide rail affects the stiffness and is not applicable to precision occasions. The utility model solves the above problems through the technology of eliminating the gap.

[0005] To achieve the above object, the first aspect of the utility model provides an anti-play structure of a T-shaped guide rail. The T-shaped guide rail includes a T-shaped slider and a slide base. The slide base is provided with a T-shaped groove. The anti-play structure includes a wear-reducing sliding member and at least one elastic member. The bottom surface of the wear-reducing sliding member protrudes from the bottom surface of the T-shaped slider, and the bottom surface of the T-shaped slider faces the bottom surface of the T-shaped groove; the elastic member is connected between the wear-reducing sliding member and the T-shaped slider; the T-shaped slider is slidably fitted on the T-shaped groove of the slide base, and the wear-reducing sliding member is in close sliding contact with the bottom surface of the T-shaped groove.

[0006] Under the action of the elastic force, the wear-reducing sliding member connected to the T-shaped slider is in close fit with the bottom surface of the T-shaped groove in the T-shaped guide rail, eliminating the gap between the T-shaped slider and the T-shaped groove, improving the stiffness of the T-shaped guide rail, and making it applicable to precision occasions.

[0007] A further technical solution of the utility model: The wear-reducing sliding member is detachably connected to the T-shaped slider, so that the T-shaped guide rail has maintainability. When wear occurs during long-term operation, the wear-reducing sliding member can be replaced.

[0008] Further technical solution of the present utility model: The anti-friction sliding member extends along the length and width directions of the bottom surface of the T-shaped slider to positions close to the edges of the bottom surface, increasing the contact area between the anti-friction sliding member and the bottom surface of the T-shaped groove and enhancing the stability of the T-shaped slider.

[0009] Further technical solution of the present utility model: The anti-friction sliding member is an anti-friction block. A slotted groove is provided on the bottom surface of the T-shaped slider. The anti-friction block is installed on the slotted groove and protrudes from the bottom surface of the T-shaped slider. The anti-friction block not only further increases the contact area but also has a simple structure and is convenient for processing.

[0010] Further technical solution of the present utility model: The anti-friction block is in the shape of a rectangular sheet, and the slotted groove is a rectangular groove. The rectangular anti-friction block adapts to the structure of the T-shaped slider, and the slotted groove facilitates the limitation of the anti-friction block.

[0011] Further technical solution of the present utility model: The anti-friction block and the slotted groove are in sliding fit along the height direction of the slotted groove, precisely limiting the anti-friction block and enhancing the stability.

[0012] Further technical solution of the present utility model: The elastic member is a spring, which has a simple structure and high versatility.

[0013] Further technical solution of the present utility model: Countersunk holes are provided in the slotted groove. The countersunk holes are evenly and symmetrically arranged in the slotted groove. The springs are respectively installed in the countersunk holes and connected to the anti-friction block, with a simple structure and stable assembly.

[0014] Further technical solution of the present utility model: There are at least two countersunk holes, which are arranged along the axis in the length direction of the slotted groove, with a simple structure and reasonable mechanical distribution.

[0015] On the other hand, the present utility model provides a T-shaped guide rail, which includes a T-shaped slider and a slide base. A T-shaped groove is provided on the slide base. The anti-play structure of the above T-shaped guide rail is further included. Two T-shaped grooves are arranged side by side on the slide base, and the two T-shaped grooves are in sliding fit with two T-shaped sliders respectively. A driving gear is arranged at the middle position corresponding to the two T-shaped grooves on the slide base. Linear tooth rails are provided on one side of the two T-shaped sliders opposite to the driving gear, and the driving gear meshes with the two linear tooth rails for transmission.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. The present utility model eliminates the gap between the T-shaped slider and the T-shaped groove, reduces the swing of the T-shaped slider during operation, and thus improves the running accuracy of the T-shaped guide rail.

[0018] 2. The present utility model replaces the contact between the bottom surface of the T-shaped slider and the T-shaped groove with an anti-friction sliding member. When wear occurs during long-term operation, only the anti-friction sliding member needs to be replaced, and there is no need to replace the entire T-shaped slider, making the T-shaped guide rail highly maintainable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the T-shaped guide rail in an exemplary embodiment of the present invention;

[0021] Figure 2 Structural schematic diagram of the backlash elimination structure in an exemplary embodiment of the present invention;

[0022] Figure 3 Structural schematic diagram of the backlash elimination structure in another exemplary embodiment of the present invention;

[0023] Figure 4 Structural schematic diagram of the T-shaped guide rail in another exemplary embodiment of the present invention;

[0024] Figure 5 For the explosion of the T-shaped guide rail in another exemplary embodiment of the present invention Figure 1 ;

[0025] Figure 6 For the explosion of the T-shaped guide rail in another exemplary embodiment of the present invention Figure 2 ;

[0026] In the figure: 10, T-shaped guide rail; 11, T-shaped slider; 111, bottom surface; 112, flake groove; 1121, counterbore; 12, slide base; 121, T-shaped groove; 1211, groove bottom surface; 100, backlash elimination structure; 101, anti-friction sliding member; 1011, anti-friction block; 102, elastic member; 1021, spring; 13, driving gear; 131, driving cavity; 122, linear tooth rail; a, length direction; b, width direction; c, height direction; d, axis. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. 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.

[0028] Please refer to Figures 1 - 6, an embodiment of the first aspect of the present utility model provides a clearance elimination structure 100 for a T-shaped guide rail. The T-shaped guide rail 10 includes a T-shaped slider 11 and a slide base 12. A T-shaped groove 121 is provided on the slide base 12. The clearance elimination structure 100 includes an anti-friction sliding member 101 and an elastic member 102. The anti-friction sliding member 101 is connected to the bottom surface 111 of the T-shaped slider 11, and the bottom surface of the anti-friction sliding member 101 protrudes from the bottom surface of the T-shaped slider 11; the bottom surface 111 of the T-shaped slider 11 faces the bottom surface 1211 of the T-shaped groove 121; the elastic member 102 is connected between the anti-friction sliding member 101 and the T-shaped slider 11; the T-shaped slider 11 is slidably fitted on the T-shaped groove 121 of the slide base 12, and the anti-friction sliding member 101 maintains close sliding contact with the bottom surface 1211 of the T-shaped groove 121.

[0029] In an exemplary embodiment, the anti-friction sliding member 101 is detachably connected to the T-shaped slider 11. Specifically, the anti-friction sliding member 101 is detachably connected to the T-shaped slider through a plurality of elastic members 102; the elastic member 102 is a spring 1021, with a simple structure and high versatility; in some embodiments, the elastic member 102 can be an elastic rod; the detachable connection method enables the T-shaped guide rail to be maintainable. When wear occurs after long-term operation, only the anti-friction sliding member needs to be replaced; there is no need to replace the entire T-shaped slider. In some embodiments, the anti-friction sliding member can also be detachably connected to the T-shaped slider through a guiding mechanism and a spring, and the guiding mechanism can be a telescopic rod;

[0030] In an exemplary embodiment, the anti-friction sliding member 101 extends along the length direction a and the width direction b of the bottom surface 111 of the T-shaped slider 11 to positions close to the edges of the bottom surface 111 of the T-shaped slider 11; on the one hand, it can increase the contact area between the anti-friction sliding member and the bottom surface of the T-shaped groove, and on the other hand, it can improve the rationality of the mechanical configuration and is beneficial to the stability of the T-shaped slider; specifically, the anti-friction sliding member 101 is an anti-friction block 1011. A slotted groove 112 is provided on the bottom surface 111 of the T-shaped slider 11, and the anti-friction block 1011 is installed on the slotted groove 112 and protrudes from the bottom surface 111; the anti-friction block 1011 can move up and down in the slotted groove 112. The anti-friction block 1011 is in the shape of a rectangular sheet, and the slotted groove 112 is a rectangular groove. The rectangular anti-friction block 1011 adapts to the structure of the T-shaped slider 11, and the slotted groove 112 facilitates the limitation of the anti-friction block 1011. While further increasing the contact area, the structure is simple and convenient for processing. The anti-friction block 1011 and the slotted groove 112 are slidably fitted along the height direction c of the slotted groove 112 to precisely limit the anti-friction block 1011 and ensure up and down movement, improving stability. In some embodiments, chamfers are provided on both the anti-friction block and the slotted groove 112 for convenient assembly.

[0031] A counterbore 1121 is provided in the chip groove 112. The counterbores 1121 are evenly and symmetrically arranged in the chip groove 112. The springs 1021 are respectively installed in the counterbores 1121 and connected to the antifriction blocks 1011. The arrangement of the counterbores facilitates the assembly of the springs, making the structure simple and the assembly stable. In an exemplary embodiment, there are 2 counterbores 1121, which are symmetrically arranged on the axis d in the length direction of the chip groove 112, with a simple structure and reasonable mechanical distribution.

[0032] The working principle of the embodiment of the first aspect of the present invention: Under the action of elastic force, the antifriction slider 101 connected to the T-shaped slider 11 keeps in close contact with the bottom surface 1211 of the T-shaped groove 121 in the T-shaped guide rail 10, eliminating the gap between the T-shaped slider 11 and the T-shaped groove 121, improving the stiffness of the T-shaped guide rail and making it suitable for precision applications.

[0033] On the other hand, the present invention provides a T-shaped guide rail 10, which includes a T-shaped slider 11 and a slide base 12, and further includes the clearance elimination structure 100 of the above T-shaped guide rail. Two T-shaped grooves 121 are arranged side by side on the slide base 12, and the two T-shaped grooves 121 are in sliding fit with the two T-shaped sliders 11 respectively; a driving cavity 131 is arranged at the middle position corresponding to the two T-shaped grooves 121 on the slide base 12, a driving gear 13 is arranged on the driving cavity 131, and linear tooth rails 122 are arranged on one side surface of the two T-shaped sliders 11 opposite to the driving gear 13, and the driving gear 13 meshes with the two linear tooth rails 122 for transmission.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A backlash elimination structure for a T-shaped guide rail, the T-shaped guide rail comprising a T-shaped slider and a slide base, wherein a T-shaped groove is provided on the slide base, and characterized in that, The backlash elimination structure includes an anti-friction sliding member and at least one elastic member. The bottom surface of the anti-friction sliding member protrudes from the bottom surface of the T-shaped slider, and the bottom surface of the T-shaped slider faces the bottom surface of the T-shaped groove. The elastic member is connected between the anti-friction sliding member and the T-shaped slider. The T-shaped slider is slidably fitted on the T-shaped groove of the slide base, and the anti-friction sliding member keeps in close sliding contact with the bottom surface of the T-shaped groove.

2. The backlash elimination structure of a T-shaped guide rail according to claim 1, characterized in that, The anti-friction sliding member is detachably connected to the T-shaped slider.

3. The backlash elimination structure of a T-shaped guide rail according to claim 2, characterized in that, The anti-friction sliding member extends to a position close to the edge of the bottom surface along the length direction and the width direction of the bottom surface of the T-shaped slider.

4. A backlash elimination structure for a T-shaped guide rail according to claim 1 or 2, characterized in that The anti-friction sliding member is an anti-friction block. A flake groove is provided on the bottom surface of the T-shaped slider, and the anti-friction block is installed on the flake groove and protrudes from the bottom surface.

5. The backlash elimination structure of a T-shaped guide rail according to claim 4, characterized in that, The bottom surface of the anti-friction block is in a rectangular flake shape, and the flake groove is a rectangular groove.

6. The backlash elimination structure of a T-shaped guide rail according to claim 4, characterized in that, The anti-friction block and the flake groove are slidably fitted along the height direction of the flake groove.

7. The backlash elimination structure of a T-shaped guide rail according to claim 4, characterized in that, The elastic member is a spring, and the two ends of the spring are respectively press-connected between the anti-friction block and the flake groove.

8. The backlash elimination structure of a T-shaped guide rail according to claim 4, characterized in that, A counterbore is provided in the flake groove. The counterbores are uniformly and symmetrically arranged in the flake groove. The springs are respectively installed in the counterbores and connected to the anti-friction block.

9. The backlash elimination structure of a T-shaped guide rail according to claim 8, characterized in that, There are at least two counterbores, which are arranged along the axis of the length direction of the flake groove.

10. A T-shaped guide rail, characterized in that, It includes a T-shaped slider and a slide base. Two T-shaped grooves are arranged side by side on the slide base, and the two T-shaped grooves are slidably fitted with the two T-shaped sliders one by one. It further includes the backlash elimination structure of the T-shaped guide rail according to any one of claims 1-9. The backlash elimination structure is arranged on at least one of the two T-shaped sliders. A driving gear is arranged at the middle position between the two corresponding T-shaped grooves of the slide base. Linear tooth rails are provided on one side surface of the two T-shaped sliders opposite to the driving gear, and the driving gear meshes with the two linear tooth rails for transmission.

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