CN100425901C - Linear sliding rail lubricating system - Google Patents

Abstract

The present invention relates to a design of a lubrication system mechanism for a linear slide rail, and more particularly to a redesigned lubrication oil flow path, which improves the conventional two-dimensional plane oil path of the linear slide rail into a three-dimensional oil path, so that the lubricating oil flows in three dimensions to the middle of the upper and lower ball bearings in the same flow groove, so that the lubricating oil can be evenly distributed to each reflux groove to lubricate the balls; and the lubrication position is set on the matching surface of the end cover and the cover plate, and no longer on the matching surface of the end cover and the slider, so that at the same time, the situation of the lubricating oil overflowing from the matching surface of the end cover and the slider can be improved to a considerable extent, and the sealing of the oil path can be improved.

Description

Lubrication system for linear slides

technical field

The invention relates to a lubricating system mechanism design of a linear slide rail, in particular to a redesign of the lubricating oil flow path, so that the lubricating oil of the linear slide rail can be evenly distributed to each return groove, and the sealing of the lubricating system is improved. sex.

Background technique

The general machine is equipped with a linear guide mechanism, the linear slide rail is a kind of linear guide mechanism, and the linear slide rail must have sufficient lubricating oil to lubricate the balls, so that it can operate normally without compromising the service life.

The lubricating oil circulation path of the linear slide rail, as shown in Figure 10, mostly reserves a nozzle hole 61 on the end cover 60, and then reserves a specific oil passage 62 on the lapping surface of the end cover 60 to communicate with the slide rail. The end faces of the block cooperate to form a lubricating oil circulation path, and the lubricating oil flows along the overlapping surface of the end cover 60 along the flow path, and flows into the upper backflow groove 63 and the lower backflow groove 64 of the end cover 60 . In addition, in order to reduce the manufacturing cost, the overlapping surface of the end cover is usually designed as a cover plate, and the cover plate is combined on the end cover to form a complete ball return groove. The way guides the lubricating oil into the ball return groove of the end cover. The above two methods of lubricating oil flow on the same plane, and it is usually not easy to distribute the lubricating oil evenly to each ball return groove; just like a water pipe extracts a branch line from it, the amount of water cannot be evenly distributed. For each branch line, it is easy to cause uneven lubrication of the balls in different ball return grooves, resulting in uneven service life of the balls of the linear slide rail and shortening the overall service life. Moreover, since the lubricating oil path is exposed on the mating surface where the end cover and the slider are assembled, if there is an error in the machining accuracy or the surface roughness is not good, it is easy to cause the lubricating oil to overflow from the mating plane when the user adds lubricating oil.

In conclusion, it is necessary to improve the uniformity of oil supply and the sealing performance of the oil passage of the above-mentioned prior art lubrication system.

Contents of the invention

The present invention firstly provides a new solution to the uneven oil supply of the previous linear slide rail lubrication system, so that the lubrication system of the present invention can provide a uniform oil supply function.

The object of the present invention is to provide a lubricating system of a linear slide rail, so that the lubricating oil of the linear slide rail lubricating system can be evenly distributed to each return groove.

A secondary objective of the present invention is to provide a lubrication system for a linear slide rail, which can improve the sealing performance of the oil passage.

For realizing above-mentioned purpose of the invention, the technical scheme that the present invention adopts is as follows:

A lubricating system for a linear slide rail. Its structure is mainly set between the end covers and cover plates on both sides of the slider. The end covers and cover plates are matched with each other to form a three-dimensional oil circuit, so that the lubricating oil is in a three-dimensional space. It circulates to the middle position of the upper and lower ball return grooves, and then evenly distributes to each ball return groove to lubricate the balls; and the lubrication position is set on the matching surface of the end cover and the cover plate, so it can improve the overflow of lubricating oil.

The oil injection direction is the oil injection hole on the end face of the end cover. The oil injection direction can also be the side oil injection hole of the end cover. The direction of oil injection is the oil injection hole above the slider. There is a barrier in the cover plate, so that the lubricating oil will not overflow from the mating surface of the end cover and the slider during oil filling. The barrier is a detachable barrier structure.

According to the above, the beneficial effects of using the present invention are: the present invention mainly aims at the two spare parts of the linear slide rail: the end cover and the cover plate, and redesigns a lubricating oil circulation path; The three-dimensional oil circuit is designed as a three-dimensional oil circuit. The invention utilizes the matching of the end cover and the cover plate to form a lubricating oil circulation path in the space, so that the lubricating oil can flow to the middle position of the upper and lower ball return grooves in a three-dimensional space, and then be evenly distributed to each ball return groove to lubricate the balls. Furthermore, because the lubricating oil circulation path of the present invention is a three-dimensional oil circuit, the lubricating position is set on the matching surface of the end cover and the cover plate, and is no longer the matching surface of the end cover and the slider, so it can be quite To a certain extent, the situation that lubricating oil overflows from the mating surface of the end cover and the slider is improved.

Secondly, in order to improve the sealing performance of oil injection, the present invention adds a special barrier structure on the cover plate to improve the sealing performance of oil injection. The barrier structure is arranged in the oil injection hole of the cover plate on the mating surface of the end cover and the slider The lubricating oil will not overflow from the mating surface of the end cover and the slide block during oil filling, and the sealing performance of the overall oil circuit can be enhanced. Furthermore, in order to make the lubricating system of the present invention applicable to three commonly used oiling directions at the same time, the blocking structure is designed as a detachable blocking structure to improve its versatility.

In order to further understand the features and technical contents of the present invention, please refer to the following description and drawings of the embodiments of the present invention. However, the embodiments and drawings are for illustration and reference only, and are not intended to limit the present invention.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the lubrication system of the linear slide rail of the present invention

Figure 2 is a three-dimensional schematic view of the end cap of Figure 1

Figure 3 is a front perspective view of the cover plate in Figure 1

Figure 4 is a perspective view of the reverse side of the cover plate in Figure 1

Figure 5 is a schematic diagram of the combination of the end cover and the cover plate of the lubrication system of the present invention

Figure 6 is a schematic cross-sectional view of Figure 5

Figure 7 is a three-dimensional schematic diagram of three oiling directions of the lubrication system of the present invention

Figure 8 is a partial cross-sectional schematic view of Figure 7

Figure 9 is a schematic diagram of the detachable structure of the barrier of the cover plate of the present invention

Figure 10 is a schematic diagram of the end cover of the traditional linear slide rail lubrication system

10 Slider 11 Oil injection hole 12 Oil injection passage

20 End cover 21 Oil injection hole 22 Guide oil circuit

23 Oil flow hole 24 Oil injection hole 25 Oil supply curved surface

25a oil supply port 26 threaded hole 30 cover plate

31 Oil flow hole 32 Guide oil circuit 33 Oil through hole

34 oil hole 35 barrier piece 351 annular groove

352 Tapered Groove 353 Ring Flange 40 Tapered Tool

50 fixing screw 60 end cover 61 oil injection hole

62 oil circuit 63 upper return tank 64 lower return tank

Detailed ways

Fig. 1 is the three-dimensional schematic view of the lubrication system of the linear slide rail of the present invention; wherein, end caps 20 and cover plates 30 are respectively provided at both ends of the slider 10, and the end caps 20 and cover plates 30 can be combined into a complete return flow for the balls to turn to return flow groove.

Fig. 2 is a three-dimensional schematic view of the end cover of Fig. 1; Fig. 3 is a front three-dimensional schematic view of the cover plate of Fig. 1; Fig. 4 is a three-dimensional schematic view of the reverse side of the cover plate of Fig. 1; the end cover 20 has two oiling directions: the oiling hole on the end surface 21 and the oil injection hole 24 on the side, when lubricating oil is injected from the oil injection hole 21 into the oil flow hole 31 of the cover plate 30, because the barrier member 35 has the effect of preventing the lubricating oil from flowing to the end surface of the slider, the lubricating oil is led from the guide oil passage 32 to the Both sides, and then enter the oil holes 33 on both sides to guide the lubricating oil from the reverse side of the cover plate 30 (matching surface with the end cover 20) to the front side of the cover plate 30 (matching surface with the slider), and then in the middle position of the upper and lower return grooves ( About the position of the threaded hole 26) through the oil hole 34, the lubricating oil is returned to the oil supply curved surface 25 on the opposite side of the cover plate 30 and the end cover 20, so as to supply oil to the upper and lower return grooves, so that the balls can be properly lubricated ; In addition, if the lubricating oil is injected from the oil injection hole 24, the lubricating oil will enter the guide oil passage 22 from the oil flow hole 23 and then lead to the oil injection hole 21, and the oil will be supplied to the upper and lower return grooves through the above-mentioned flow path, so that the balls can get Lubricate properly.

Figure 5 is a schematic diagram of the combination of the end cover and the cover plate of the lubrication system of the present invention; Figure 6 is a schematic cross-sectional view of Figure 5; when lubricating oil is injected from the end cover 20 and guided by the cover plate 30, it flows from the oil hole 33 to the threaded hole 26 Next to the oil hole 34, and the cover plate 30 is matched with the oil supply surface 25 of the end cover 20 to form an oil supply port 25a. The lubricating oil in the oil hole 34 enters the oil supply port 25a. Since the oil supply port 25a is quite small Therefore, the lubricating oil is precipitated here by capillary phenomenon, and the oil is evenly supplied to the upper and lower backflow tanks respectively.

Fig. 7 is a three-dimensional schematic diagram of three oil injection directions of the lubrication system of the present invention; Fig. 8 is a partial cross-sectional schematic diagram of Fig. 7; the present invention can not only inject oil from the oil injection hole 21 or the oil injection hole 24 of the end cover 20, but also from the top of the slider 10 When the lubricating oil is injected from the oil injection hole 11, it enters the oil flow hole 31 and the oil injection hole 21 through the oil injection passage 12 through the barrier member 35 that has become a passage state. At this time, a fixing screw 50 is set outside the oil injection hole 21. , Make the oil hole 21 into a closed state, the lubricating oil will lead from the guide oil passage 32 to the oil supply port 25a with the above-mentioned path, and supply oil to the upper and lower return grooves to lubricate the balls.

Fig. 9 is a schematic diagram of the detachable structure of the barrier member of the cover plate of the present invention; the barrier member 35 of the cover plate 30 of the present invention is arranged on the front side of the oil flow hole 31 (that is, the surface matched with the slider), and the barrier member 35 mainly The structure includes: an annular groove 351, a tapered groove 352 and an annular flange 353; since the thickness of the barrier 35 in the annular groove 351 is narrowed and the strength becomes smaller, when the tapered tool 40 is used to taper The groove 352 exerts pressure, and the part surrounded by the annular groove 351 can be easily separated from the cover plate 30, and becomes the passage of the barrier member 35 in the aforementioned through hole state; For the tightness of oil injection, there is an annular flange 353 on the outer ring part, which becomes the barrier wall of this passage to ensure the sealing effect and prevent the lubricating oil from overflowing.

First of all, the lubrication system of the linear slide rail of the present invention improves the two-dimensional plane oil circuit of the existing linear slide rail into a three-dimensional oil circuit, so that the lubricating oil circulates in the three-dimensional space to the middle of the upper and lower ball return grooves, and then distributes it evenly to each ball return groove to lubricate the balls.

Secondly, the lubricating oil flow path of the present invention is a three-dimensional oil path, and the lubricating position is set on the matching surface of the end cover and the cover plate, and is no longer the matching surface of the end cover and the slider, so it can be used to a considerable extent at the same time Improve the situation where lubricating oil overflows from the mating surface of the end cover and the slider.

Furthermore, in order to improve the sealing performance of oil injection, the present invention adds a special barrier structure on the cover plate to improve the sealing performance of oil injection, and in order to make the barrier structure applicable to three commonly used oil injection directions at the same time, the barrier structure design It is a detachable barrier structure to improve its versatility.

To sum up, there is no doubt that the present invention "has industrial applicability"; in addition, the structure disclosed in the embodiment of the present invention has not been published before the application, nor has it been publicly used. In addition, it has the above effects The fact of improvement, therefore, the "novelty" and "progressiveness" of the present invention have been met, and a new patent application is filed according to law.

Claims (5)

1. A lubrication system for a linear slide rail, characterized in that its structure is mainly set between the end covers and cover plates on both sides of the slider, and the end covers and cover plates are matched with each other. When the lubricating oil is injected into the cover plate Oil flow hole, the lubricating oil is led from the guide oil passage of the cover plate to the oil passage holes on both sides of the cover plate, and the lubricating oil is led from one side of the cover plate to the other side of the cover plate, forming a three-dimensional oil passage, and then circulated to the upper and lower balls In the middle of the return tank, the lubricating oil is guided back to the cover plate through another oil hole. After matching with the oil supply surface of the end cover, an oil supply port is formed. The lubricating oil is sucked out through the capillary phenomenon of the oil supply port, and then distributed evenly Go to each ball return groove to lubricate the balls; and the lubricating position is set on the matching surface of the end cover and the cover plate, so it can improve the situation where the lubricating oil overflows. 2. The lubrication system of the linear slide rail according to claim 1, characterized in that: the oil injection direction is the oil injection hole on the end face of the end cover. 3. The lubrication system of the linear slide rail according to claim 1, characterized in that: the oil injection direction is the side oil injection hole of the end cover. 4. The lubrication system of the linear slide rail according to claim 1, characterized in that: the oil injection direction is the oil injection hole above the slider. 5. The lubrication system of the linear slide rail according to claim 1, characterized in that: a barrier is provided in the cover plate, and the barrier includes: an annular groove, a tapered groove and an annular flange. The part surrounded by the ring-shaped groove can be separated from the cover by applying pressure. There is a ring-shaped flange on the outer ring of the barrier, so that the lubricating oil will not flow from the mating surface of the end cover and the slider during oil filling. overflow out.

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