Linear guide rail

Abstract

The utility model discloses a linear guide rail which comprises a track, a sliding block base, steel balls, a sliding block top seat, a scraper, bolts, an oil storage tank and an oil injection hole, raceways are arranged on two sides of the track, the sliding block base movably nested on the raceways is arranged on the track, stepped holes are formed in the sliding block base at equal intervals, the steel balls are filled in the stepped holes, and the scraper is arranged on the sliding block top seat. The sliding block base is completely nested in the sliding block top seat, the steel balls are arranged on the roller paths in a matched mode and bear the sliding block top seat, and scraping plates are arranged at the two ends of the sliding block top seat and packaged at the two ends of the sliding block top seat through bolts. By means of the mode, the linear guide rail is provided, the stepped holes are designed to isolate the steel balls so as to reduce abrasion, a multi-point lubricating system is adopted to independently provide a direct contact type oil supply channel for each steel ball, then the supporting rail and the anchoring part are matched to enhance the heavy load capacity, and the linear guide rail has the advantages of being long in service life, easy and convenient to maintain and operate, high in load capacity and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to linear guide rail field especially relates to a linear guide rail. BACKGROUND

[0002] Linear guide rail is a kind of mechanical device that can realize high-precision linear reciprocating motion, and is widely used in machine tool, automation equipment and other fields.The existing linear guide rail is usually composed of base component, sliding component and rolling element such as ball or roller, and the sliding component can slide relative to the base component in linear direction.However, in the prior art as shown in the figure, the linear guide rail has some problems, for example, the ball is arranged in close succession in single row or multiple rows, and the ball contacts each other, which causes the ball to wear faster and the service life of the linear guide rail to decrease. Figure 8 For another example, the lubrication system at the end cover of the sliding block is realized in passive mode, only has single oil nozzle single-point lubrication, and the lubrication effect is poor, the wear between the ball and the track is intensified, and the noise is large. For still another example, the ball is fixed by necking, so that the linear guide rail cannot realize heavy load. In combination with the above design defects, the service life is not high, the movement is not stable enough, etc., which directly affects the machining precision and service life of the equipment. SUMMARY

[0003] The utility model mainly solves the technical problem to provide a kind of linear guide rail, design step hole isolation ball to reduce wear, adopt multiple-point lubrication system to provide direct-touch oil supply channel for each ball, again with the cooperation of support track and anchoring portion to strengthen heavy load capacity, with long service life, maintenance operation is simple, heavy capacity is high and so on.

[0004] To solve the above technical problems, one technical scheme of the utility model is provided: a kind of linear guide rail, including track, sliding block base, ball, sliding block top seat, scraper, bolt, oil reservoir, oil injection hole, the track both sides have raceway, the track is provided with the sliding block base that is movably nested on raceway, the sliding block base is equidistant apart and is provided with step hole, the step hole is filled with ball, the sliding block base is completely nested in sliding block top seat, the ball is matched on raceway and carries sliding block top seat, the both ends of sliding block top seat are provided with scraper, the scraper is encapsulated in the both ends of sliding block top seat by bolt, the oil reservoir that penetrates both ends is set in sliding block top seat, the inner wall of sliding block top seat is provided with oil injection hole, and the oil injection hole is connected with oil reservoir.

[0005] In a preferred embodiment of the utility model, the raceway is C-shaped, including upper raceway and lower raceway, the upper raceway and lower raceway are provided with arc concave surface matched with the ball.

[0006] In a preferred embodiment of the utility model, the slider base is C-shaped, the stepped holes are arranged in four rows, are symmetrical left and right and are arranged in parallel on the upper left, lower left, upper right and lower right of the slider base respectively.

[0007] In a preferred embodiment of the utility model, a lubricating groove is arranged between each adjacent stepped hole on the outer surface of the slider base, the lubricating groove is connected to the stepped hole, a lubricating block is filled in the lubricating groove, and the lubricating block extends into the stepped hole.

[0008] In a preferred embodiment of the utility model, the lubricating block is T-shaped, the left and right ends of the lubricating block are adjacent to the adjacent stepped holes, the left and right ends of the lubricating block are in zero-pressure contact with the steel balls, and the lubricating block is used for absorbing, guiding and transmitting lubricating substances and supplying the steel balls.

[0009] In a preferred embodiment of the utility model, a support rail matched with the steel ball is arranged on the inner wall of the slider top base, and the support rail is concave arc-shaped.

[0010] In a preferred embodiment of the utility model, the oil injection hole is directly connected to the bottom of the oil storage groove.

[0011] In a preferred embodiment of the utility model, a transition step is arranged on the upper edge of the support rail, and the oil injection hole is arranged on the transition step.

[0012] In a preferred embodiment of the utility model, an integral cutout is arranged at the port of the stepped hole, a riveting part with a diameter smaller than the steel ball and folded towards the center of the circle is formed at the cutout, and the riveting part is used for limiting and locking the steel ball under heavy load.

[0013] In a preferred embodiment of the utility model, the lubricating block is in one-to-one correspondence with the oil injection hole.

[0014] The utility model discloses a linear guide rail, which has the advantages of long service life, simple maintenance and operation, high load capacity and the like. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings for the ordinary skilled in the art without creating labor.

[0016] Figure 1is a preferred embodiment of the linear guide rail of the utility model;

[0017] Figure 2 is a sectional view of the linear guide rail of the utility model;

[0018] Figure 3 is a structure view of the slider base of the linear guide rail of the utility model;

[0019] Figure 4 is a structure view of the slider top base of the linear guide rail of the utility model;

[0020] Figure 5 is a structure view of the lubricating block of the linear guide rail of the utility model;

[0021] Figure 6 is a structure view of the oil injection hole of the linear guide rail of the utility model;

[0022] Figure 7 is a structure view of the stepped hole of the linear guide rail of the utility model;

[0023] Figure 8 is a background technical structure view of the linear guide rail of the utility model. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0025] As Figures 1-7 shown, the embodiments of the utility model include:

[0026] A linear guide rail, including track 1, slider base 6, steel ball 5, slider top base 4, scraper 3, bolt 2, oil storage groove 4a, oil injection hole 4b, the track 1 both sides have the raceway 1a, the track 1 is provided with the slider base 6 that is movably nested on the raceway 1a, the slider base 6 is provided with the stepped hole 6b that is equidistantly spaced apart, the stepped hole 6b is filled with steel ball 5, the slider base 6 is completely nested in the slider top base 4, the steel ball 5 is matched on the raceway 1a and carries slider top base 4, the both ends of slider top base 4 are provided with scraper 3, the scraper 3 is encapsulated in the both ends of slider top base 4 by bolt 2, the slider top base 4 is provided with the oil storage groove 4a that penetrates both ends, the inner wall of slider top base 4 is provided with oil injection hole 4b, and the oil injection hole 4b is connected with oil storage groove 4a.

[0027] The raceway 1a is C-shaped, including an upper raceway 100 and a lower raceway 101, and the upper raceway 100 and the lower raceway 101 are provided with arc-shaped concave surfaces matched with the steel balls 5.

[0028] Further, the slider base 6 is C-shaped, and the stepped holes 6b are arranged in four columns, are left-right symmetrical, and are arranged in parallel on the upper left, lower left, upper right and lower right of the slider base 6 respectively.

[0029] Further, the outer surface of the slider base 6 is provided with a lubricating groove 6a between each adjacent stepped hole 6b, the lubricating groove 6a is connected to the stepped hole 6b, and the lubricating groove 6a is filled with a lubricating block 7, and the lubricating block 7 extends into the stepped hole 6b.

[0030] Further, the lubricating block 7 is T-shaped, the left and right ends of the lubricating block 7 are adjacent to the adjacent stepped holes 6b, the left and right ends of the lubricating block 7 are in zero pressure contact with the steel balls 5, and the lubricating block 7 is used to absorb, guide and transmit lubricating substances and supply the steel balls 5.

[0031] Further, the inner wall of the slider top base 4 is provided with a support rail 1 matched with the steel balls 5, and the support rail 1 is concave arc-shaped.

[0032] Further, the oil injection hole 4b is directly connected to the bottom of the oil storage groove 4a.

[0033] Further, the upper edge of the support rail 1 is provided with a transition step 1c, and the oil injection hole 4b is located on the transition step 1c.

[0034] Further, the stepped hole 6b is provided with an integrally formed notch 6c at the port, a riveting part 6d is formed at the notch 6c, the riveting part 6d is folded towards the center of the circle with a diameter smaller than the steel ball 5, and the riveting part 6d is used to limit and lock the steel ball 5 under heavy load.

[0035] Further, the lubricating block 7 corresponds to the oil injection hole 4b one by one.

[0036] The assembly method of the product includes the following steps: first, the steel balls 5 are placed in the stepped holes 6b of the slider base 6, the steel balls 5 are fixed according to the specified process, the lubricating blocks 7 are placed in the lubricating grooves 6a, the slider top base 4 and the slider base 6 are assembled, and the slider top base 4 and the slider base 6 are fixed by the bolts 2; first, one end of the oil storage groove 4a is sealed by the bolt 2, lubricating oil is injected into the oil storage groove 4a, the oil injection port of the oil storage groove 4a is sealed by the bolt 2 again, the two scrapers 3 are installed by the bolt 2, and the assembled slider is sleeved on the rail 1 to complete the assembly.

[0037] Since the stepped holes 6b are provided on the slider base 6, the steel balls 5 can be isolated from each other, so that the mutual contact of the steel balls can be effectively avoided, the wear is reduced, and the service life of the linear guide rail is increased.

[0038] Since the oil tank 4a can uniformly distribute the lubricating oil to each oil injection hole 4b, each oil injection hole 4b can further distribute the lubricating oil to each lubricating block 7, and the lubricating block 7 can continue to guide the lubricating oil into the stepped hole 6b, continuously contact the lubricating block during the rolling of the steel ball, and continuously obtain the lubricating effect of the lubricating oil. Based on this multi-point lubrication system, the oil tank of the product is provided with multiple oil injection holes, which can make the lubricating block directly coat the lubricating oil on the steel ball through the contact and drainage of the oil injection hole and the lubricating block, the lubricating effect is excellent, and the service life of the product is effectively improved.

[0039] Since the stepped hole 6b port forms an anchoring part 6d through the cutout 6c, and the support rail 4a on the sliding block top seat 4 is designed to press the steel ball, under heavy load, on the one hand, the support rail and the steel ball are in contact and support, improving the load-carrying capacity of the linear guide rail, and on the other hand, the anchoring part can effectively suppress the jumping of the steel ball, and the heavy load stress is absorbed through the limiting structure, thereby realizing the heavy load function.

[0040] In summary, the linear guide rail provided by the utility model reduces abrasion by designing a stepped hole to isolate the steel ball, independently provides a direct-touch oil supply channel for each steel ball by using a multi-point lubrication system, and cooperates the support rail and the anchoring part to strengthen the heavy load capacity, and has the advantages of long service life, simple maintenance and operation, high load capacity and the like.

[0041] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the content of the utility model specification, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A linear guide rail, characterized in that, The device includes a track, a slider base, steel balls, a slider top seat, scrapers, bolts, an oil reservoir, and an oil injection hole. The track has raceways on both sides, and a slider base is movably nested within the raceways. The slider base has equidistant stepped holes filled with steel balls. The slider base is completely nested within the slider top seat. The steel balls engage with the raceways and support the slider top seat. Scrapers are located at both ends of the slider top seat and are bolted to both ends. The slider top seat has an oil reservoir extending through both ends, and an oil injection hole is located on its inner wall, connecting to the oil reservoir.

2. A linear guide rail according to claim 1, characterized in that, The raceway is C-shaped and includes an upper raceway and a lower raceway. Both the upper and lower raceways have arc-shaped concave surfaces that match the steel balls.

3. A linear guide rail according to claim 1, characterized in that, The slider base is C-shaped, and the stepped holes are arranged in four rows, symmetrically arranged on the left and right sides, and parallel to each other on the upper left, lower left, upper right, and lower right sides of the slider base.

4. A linear guide rail according to claim 1, characterized in that, The outer surface of the slider base has a lubrication groove between each adjacent stepped hole. The lubrication groove is connected to the stepped hole and is filled with a lubrication block that extends into the stepped hole.

5. A linear guide rail according to claim 4, characterized in that, The lubricating block is T-shaped, with its left and right ends adjacent to the stepped holes. The left and right ends of the lubricating block are in zero-pressure contact with the steel balls. The lubricating block is used to absorb, guide, and transfer lubricating substances and supply them to the steel balls.

6. A linear guide rail according to claim 1, characterized in that, The inner wall of the slider top seat is provided with a support rail for matching steel balls, and the support rail is in the shape of an inwardly concave arc.

7. A linear guide rail according to claim 1, characterized in that, The oil injection hole leads directly to the bottom of the oil storage tank.

8. A linear guide rail according to claim 6, characterized in that, The upper edge of the support rail is provided with a transition step, and the oil injection hole is located on the transition step.

9. A linear guide rail according to claim 1, characterized in that, An integrally formed notch is provided at the end of the stepped hole, and a rivet part with a diameter smaller than that of the steel ball and folded towards the center is formed at the notch. The rivet part is used to limit and lock the steel ball under heavy load.

10. A linear guide rail according to claim 4, characterized in that, The lubricating block is connected to the oil injection hole in a one-to-one correspondence.

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