CN102678751A - Sliding guide rail with micro-pit oil pockets on surface of base - Google Patents

Abstract

The invention discloses a sliding guide rail with micropit oil pockets on the surface of a substrate. There are evenly distributed micropit oil pockets on the surface of the static guide rail base, and a layer of soft material is bonded to the base of the static guide rail. Imitating the lubrication principle of human joints, when the guide rail is under downward pressure, the part of the soft material above the micro-pit oil bag is recessed to store lubricating oil, thereby forming elastic hydrodynamic pressure lubrication between the moving guide rail and the static guide rail Oil film, reducing friction and wear, ensuring the life of the moving pair; because the soft material is easy to deform, the dynamic pressure oil film between the moving guide rail and the static guide rail will be in the state of elastic fluid dynamic pressure lubrication, the guide rail has good wear resistance and the lubrication effect is obvious; the static guide rail The micro pits on the surface of the substrate are evenly and regularly distributed, and the processing is simple; the soft material and the substrate of the static guide rail can be bonded together, which is easy to manufacture. The invention is especially suitable for sliding guide rails with boundary lubrication and mixed lubrication.

Description

Sliding guides with micro-pit oil pockets on the substrate surface

technical field

The invention relates to a sliding guide rail, in particular to a sliding guide rail with micropit oil pockets on the surface of a substrate.

Background technique

Sliding guide rails are well known in the prior art. The guide rail surfaces of ordinary sliding guide rails are in direct contact, and the surface roughness peaks are in direct contact, so a liquid lubricating film cannot be formed. From the perspective of friction properties, the ordinary sliding guide rail belongs to the mixed friction state with certain dynamic pressure effect, but its dynamic pressure effect is far from enough to separate the guide rail surface. Although this kind of guide rail has simple structure, convenient manufacture, high contact stiffness and good shock resistance, it has large frictional resistance and fast wear.

In view of the above situation, it is hoped that the dynamic pressure effect of the guide rail can be improved to improve the working conditions of the guide rail and produce a sliding guide rail with good wear resistance and remarkable lubricating effect.

Contents of the invention

The object of the present invention is to provide a sliding guide rail with micro-pit oil pockets on the base surface, which is a sliding guide rail with micro-pit oil pockets on the base surface of the static guide rail and a layer of soft material bonded to the base. The traditional sliding guide rail with many problems is improved in order to obtain a sliding guide rail with good wear resistance and remarkable lubricating effect.

The technical scheme adopted in the present invention is:

In the present invention, there are uniformly distributed micropit oil pockets on the surface of the base body of the static guide rail, and a layer of soft material is bonded on the base body of the static guide rail.

The micropits on the base surface of the static guide rail are arranged in parallel and equidistant along the length direction of the static guide rail, or arranged in parallel and equally spaced along the length direction of the static guide rail.

The total area of the micropits on the surface of the base of the static guide rail is 5% to 20% of the surface area of the base of the static guide rail.

The depth-to-diameter ratio of the micropit oil pocket on the base surface of the static guide rail ranges from 0.1 to 0.7.

The base material of the static guide rail is cast iron or carbon steel; the soft material is MoS ₂ doped graphite or MoS ₂ doped PTFE composite solid lubricating material, and the elastic modulus ratio of the soft material to the base of the static guide rail is 0.007-0.014 .

The beneficial effects that the present invention has are:

1. The surface of the base body of the static guide rail is evenly distributed with oil pockets in small pits, and a layer of soft material is bonded to the base body. Imitating the lubrication principle of human joints, when the guide rail is under downward pressure, the part of the soft material above the micro-pit oil bag is recessed to store lubricating oil, thus forming elastic hydrodynamic pressure lubrication between the moving guide rail and the static guide rail The oil film reduces friction and wear and ensures the life of the moving pair.

2. Since the soft material is easy to deform, the dynamic pressure oil film between the moving guide rail and the static guide rail will be in the state of elastic hydrodynamic pressure lubrication, the guide rail has good wear resistance and the lubrication effect is obvious.

3. The oil pockets on the surface of the base body of the static guide rail are evenly and regularly distributed, and the processing is simple; the soft material and the base body of the static guide rail can be bonded together, which is easy to manufacture.

The invention is especially suitable for sliding guide rails with boundary lubrication and mixed lubrication.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of a sliding guide rail with oil pockets in micro pits.

Fig. 2 is a structural diagram of the guide rail base.

Fig. 3 is a schematic diagram of the distribution of surface micropit oil packets.

Fig. 4 is a structural diagram of tiny oil pockets.

Fig. 5 is a structural diagram of a triangular sliding guide rail with a micropit oil bag.

Fig. 6 is another structural diagram of a triangular sliding guide rail with a micropit oil bag.

Fig. 7 is a structural diagram of a rectangular sliding guide rail with micropit oil pockets.

Fig. 8 is another structural diagram of a rectangular sliding guide rail with micropit oil pockets.

Fig. 9 is a structural diagram of a dovetail sliding guide rail with micropit oil pockets.

Fig. 10 is a structural diagram of another dovetail-shaped sliding guide rail with micropit oil pockets.

In the figure: 1. Soft material, 2. Base body of static guide rail, 3. Dimple oil bag, 4. Convex static guide rail of triangular sliding guide rail, 5. Concave moving guide rail of triangular sliding guide rail, 6. Concave shape of triangular sliding guide rail. Shaped static guide rail, 7, convex moving guide rail of triangular sliding guide rail, 8, convex static guide rail of rectangular sliding guide rail, 9, concave moving guide rail of rectangular sliding guide rail, 10, concave static guide rail of rectangular sliding guide rail, 11, Convex moving guide rail of rectangular sliding guide, 12. Convex static guide rail of dovetail sliding guide, 13. Concave moving guide rail of dovetail sliding guide, 14. Concave static guide rail of dovetail sliding guide, 15. Dovetail sliding Convex moving guide rails.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawings and examples.

As shown in FIG. 1 , in the present invention, there are evenly distributed micropit oil pockets 3 on the surface of the base body 2 of the static guide rail, and a layer of soft material 1 is bonded to the base body 3 of the static guide rail.

As shown in FIG. 2 , the micropits 3 on the surface of the base body 2 of the static guide rail are arranged in parallel and equidistantly along the length direction of the static guide rail. Or along the length direction of the static guide rails, multiple parallel ones, each equidistantly arranged in dislocation.

。 The total area of the micropit oil pockets 3 on the surface of the static guide rail base 2 is 5% to 20% of the surface area of the static guide rail base. As shown in Figure 3, the area ratio of a micropit oil bag area to the corresponding matrix area

.

。 The depth-to-diameter ratio of the micropit oil pocket 3 on the surface of the static guide rail base 2 is in the range of 0.1 to 0.7. As shown in Figure 4, the depth-to-diameter ratio of the depth of the micropit oil pocket to the radius

.

The material of the static guide rail matrix 2 is cast iron or carbon steel; the soft material 1 is MoS ₂ doped graphite or MoS ₂ doped PTFE composite solid lubricating material, and the elastic modulus ratio of the soft material to the static guide rail matrix is 0.007 ~0.014.

The working principle of the present invention is:

Lubricating oil is stored in the micro-pit oil bag 3 to form tiny oil bags. The soft material 1 and the base body 2 of the static guide rail are glued together to seal the lubricating oil. Imitating the lubrication principle of human joints, when under downward pressure, the part of the soft material 1 above the oil bag in the micropit has a large depression to store lubricating oil, thereby forming an elastic hydrodynamic lubricating oil film between the moving guide rail and the static guide rail , Reduce friction and wear. The base material is cast iron or carbon steel, and the soft material is solid lubricating materials such as MoS ₂ doped graphite or PTFE. The elastic deformation of the soft material is large, the friction pair is in the state of elastohydrodynamic lubrication, the sliding guide rail has good wear resistance, and the lubrication effect is obvious.

Below are embodiments of the present invention:

As shown in FIG. 5 , the present invention is applied to the convex static guide rail 4 of the triangular sliding guide rail, corresponding to the concave moving guide rail 5 of the triangular sliding guide rail. the

As shown in FIG. 6 , the present invention is applied to the concave static guide rail 6 of the triangular sliding guide rail, corresponding to the convex moving guide rail 7 of the triangular sliding guide rail.

As shown in FIG. 7 , the present invention is applied to the convex static guide rail 8 of the rectangular sliding guide rail, corresponding to the concave moving guide rail 9 of the rectangular sliding guide rail.

As shown in FIG. 8 , the present invention is applied to the concave static guide rail 10 of the rectangular sliding guide rail, corresponding to the convex moving guide rail 11 of the rectangular sliding guide rail.

As shown in FIG. 9 , the present invention is applied to the convex static guide rail 12 of the dovetail sliding guide rail, corresponding to the concave moving guide rail 13 of the dovetail sliding guide rail.

As shown in FIG. 10 , the present invention is applied to the concave static guide rail 14 of the dovetail sliding guide rail, corresponding to the convex moving guide rail 15 of the dovetail sliding guide rail.

The above specific embodiments are used to explain the present invention, rather than to limit the present invention. Within the spirit of the present invention and the protection scope of the claims, any modification and change made to the present invention will fall into the protection scope of the present invention.

Claims (5)

1. A sliding guide rail with micropit oil pockets on the surface of the substrate, characterized in that: there are evenly distributed micropit oil pockets (3) on the surface of the static guide rail substrate (2), bonded on the static guide rail substrate (3) Layer soft material (1). 2. The sliding guide rail with micropit oil pockets on the surface of the substrate according to claim 1, characterized in that: the micropit oil pockets (3) on the surface of the static guide rail substrate (2) are along the length direction of the static guide rail Multiple parallel and equidistant arrangements, or multiple parallel and equidistant arrangements along the length direction of the static guide rail. 3. The sliding guide rail with micropit oil pockets on the surface of a substrate according to claim 1, characterized in that: the total area of the micropit oil pockets (3) on the surface of the static guide rail substrate (2) is 5%~20% of the surface area of the substrate. 4. The sliding guide rail with micropit oil pockets on the surface of a substrate according to claim 1, characterized in that: the depth-to-diameter ratio range of the micropit oil pockets (3) on the surface of the static guide rail substrate (2) is 0.1~0.7. 5. The sliding guide rail with micropit oil pockets on the surface of a substrate according to claim 1, characterized in that: the material of the static guide rail substrate (2) is cast iron or carbon steel; the soft material (1 ) is a MoS ₂ doped graphite or MoS ₂ doped PTFE composite solid lubricating material, and the elastic modulus ratio of the soft material to the base of the static guide rail is 0.007-0.014.

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