Linear guide rail with oil supply assembly

Abstract

The utility model relates to the technical field of linear guide rails, in particular to a linear guide rail with an oil supply assembly, which comprises a guide rail and a sliding block slidably arranged on the guide rail along the length direction of the guide rail, the return cover is arranged at the end of the sliding block, and an arc-shaped channel is formed in the side wall, facing the end of the sliding block, of the return cover; the balls are arranged between the sliding block and the guide rail and circularly roll between the sliding block and the guide rail through the arc-shaped channels; the oil supply assembly comprises an oil pipe, the oil pipe is arranged between the return cover and the sliding block, one end of the oil pipe is used for being communicated with an external oil supply system, and the other end of the oil pipe is communicated with the arc-shaped channel. Lubricating oil supplied from the outside is directly connected with an internal channel needing oil through the oil pipes, the oil pipes with different inner diameters can be flexibly switched and used according to the installation position so as to be matched for oil supply, the possibility of oil leakage is reduced, and the requirement for the manufacturing precision of the reversing cover and an internal oil way groove of the reversing cover is lowered.

Description

Technical Field

[0001] This application relates to the field of linear guide technology, and more particularly to a linear guide with an oil supply component. Background Technology

[0002] Linear guides rely on balls that circulate between the slider and the track to achieve linear movement of the slider along the track. During long-term use, the balls may jam, so an oil supply structure is needed to lubricate the balls in the groove.

[0003] The current lubrication method involves creating an oil groove on the back of the return cover. External oil enters through a threaded hole on the front of the return cover and flows into the channel via an oil hole. The oil groove has a U-shaped structure, forming a complete channel with the end face of the slider for lubricant flow. To prevent oil leakage, a thin film is used to seal excess oil between the return cover and the slider.

[0004] Linear guides vary in installation position depending on the application. For non-horizontally placed guides, gravity can cause insufficient lubrication in higher grooves, especially noticeable on larger guides. When lubricating oil accumulates on the return cover, and manufacturing and installation create gaps between the cover and the slider body, oil leakage occurs. Existing technologies using oil grooves and diaphragms for sealing have several drawbacks. First, different types of oil grooves need to be machined to accommodate sliders in different installation positions, increasing design and manufacturing time and costs. Second, the diaphragm can affect the performance of precision guide pairs to some extent, and it doesn't fundamentally solve the problems of inadequate lubrication and oil leakage. Utility Model Content

[0005] This utility model aims to solve one of the problems existing in the background art.

[0006] Therefore, this utility model provides an oil supply assembly for a linear slider.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A linear guide with an oil supply assembly includes,

[0009] A guide rail, and a slider that is slidably mounted on the guide rail along its length;

[0010] A return cover is provided at the end of the slider, and an arc-shaped groove is provided on the side wall of the return cover facing the end of the slider;

[0011] The ball bearing is disposed between the slider and the guide rail and circulates between the slider and the guide rail through an arc-shaped groove;

[0012] An oil supply assembly includes an oil pipe disposed between the return cover and the slider. One end of the oil pipe is used to communicate with an external oil supply system, and the other end is used to communicate with an arc-shaped channel.

[0013] Furthermore, the return cover is provided with a notch adapted to the guide rail, and four arc-shaped channels are provided. The four arc-shaped channels are arranged in pairs on both sides of the notch. The two arc-shaped channels on each side of the notch are arranged in the vertical direction. The oil pipe is symmetrically arranged on both sides of the notch. The end of the oil pipe used to communicate with the arc-shaped channel is located between the two arc-shaped channels on the same side.

[0014] Furthermore, an oil distribution block for connecting to an external oil supply system is embedded on the side wall of the return cover facing the slider. The oil distribution block is provided with an oil passage, and the oil pipe is provided on both sides of the oil distribution block and connected to the oil distribution block.

[0015] Furthermore, when the connection points between the two oil pipes and the oil distribution block are located in the same horizontal plane, the inner diameters of the two oil pipes are the same.

[0016] Furthermore, when there is a height difference between the connection points of the two oil pipes and the oil distribution block, the inner diameter of the upper oil pipe is larger than that of the other oil pipe.

[0017] Furthermore, a groove is provided on the side wall of the return cover facing the slider. When the return cover is installed at the end of the slider, the oil pipe is pressed into the groove, and there is a gap between the oil pipe and the inner wall of the groove.

[0018] Furthermore, the oil pipe is a flexible hose, and the outer diameter of the flexible hoses is the same.

[0019] Furthermore, the side wall of the return cover facing the slider is provided with a buffer groove and an oil inlet. The buffer groove is located between two arc-shaped channels on the same side of the notch and is connected to the end of the pipe groove away from the oil distribution block. The number of oil inlets is adapted to the arc-shaped channels, and each oil inlet is located between the corresponding arc-shaped channel and the buffer groove.

[0020] Furthermore, a fixing block is provided at the end of the pipe groove near the buffer groove, and an oil outlet connecting the oil pipe and the buffer groove is provided inside the fixing block, and the oil pipe is connected to the fixing block.

[0021] Furthermore, both the fixed block and the oil distribution block are provided with connecting holes for inserting oil pipes. The connecting holes are opposite to the through port and the oil outlet. The diameter of the connecting hole on the oil distribution block is larger than the diameter of the through port, and the diameter of the connecting hole on the fixed block is larger than the diameter of the oil outlet. The oil pipe is interference-fitted with the fixed block and the oil distribution block.

[0022] The beneficial effects of this utility model are that it uses a thin flexible tube to directly connect the externally supplied lubricating oil to the internal oil-requiring groove, replacing the oil-supplying method through the oil trough with an oil pipe supply scheme. This allows for flexible switching of oil pipes with different inner diameters to match the oil supply according to the installation position. Furthermore, it eliminates the need for a diaphragm and reduces the possibility of oil leakage, thus fundamentally avoiding the oil leakage caused by tolerance during oil supply in the prior art. Therefore, the manufacturing precision requirements for the return cover and its internal oil passage groove are reduced.

[0023] When supplying oil to channels with height differences, the capillary action and sealing properties of the thin hose, along with the ability to use a larger inner diameter hose on the higher side to create a pressure difference with the hose on the lower side, solve the problem of incomplete oil supply caused by different horizontal positions. This allows for more efficient delivery of lubricating oil to its destination. Compared to existing technologies where the oil passage groove of the return cover and the slider body together form a complete oil passage, the integrated pipe of this invention has better sealing performance, faster oil delivery speed, higher effective oil delivery volume, and less waste. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 This is a schematic diagram of the linear guide rail with an oil supply component in this utility model.

[0026] Figure 2 This is a structural diagram illustrating the assembly relationship between the slider and the return cover in this utility model.

[0027] Figure 3 This is a schematic diagram of the return cover without the oil supply component installed in this utility model.

[0028] Figure 4 This is a schematic diagram of the structure of the return cover for installing the oil supply component in this utility model.

[0029] Figure 5 It is a manifestation Figure 4 Enlarged view of part A showing the positional relationship between the oil pipe and the stationary block.

[0030] Figure 6 This is a structural schematic diagram showing the positional relationship between the oil pipe and the oil distribution block in this utility model.

[0031] Figure 7 This is a structural diagram showing the connection relationship between the oil pipe and the fixing block in this utility model.

[0032] In the diagram: 1. Guide rail; 2. Slider; 3. Rotary plate; 4. Oil supply assembly; 41. Oil pipe; 42. Oil distribution block; 43. Fixing block; 5. Reverse cover; 51. Arc-shaped channel; 52. Notch; 53. Pipe groove; 54. Buffer groove; 55. Oil inlet; 56. Oil supply port. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0034] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] Reference Figure 1 , 2 A linear guide rail 1 with an oil supply component 4 includes a guide rail 1, a slider 2, a rotary plate 3, an oil supply component 4, and a return cover 5. The rotary plate 3 is integrated with the slider 2 by plastic coating. The return cover 5 is connected to the end of the slider 2 by screws. The side wall of the return cover 5 facing the slider 2 has four arc-shaped grooves 51 corresponding to the rotary plate 3. A number of balls are arranged between the slider 2 and the guide rail. The balls circulate and roll in the raceway formed between the slider 2 and the guide rail 1 and in the arc-shaped grooves 51.

[0037] Reference Figure 3 , 4The return cover 5 has a notch 52 adapted to the guide rail 1. Four arc-shaped channels 51 are arranged in pairs on both sides of the notch 52. The arc-shaped channels 51 are symmetrically arranged on both sides of the notch 52, and the two arc-shaped channels 51 on each side of the notch 52 are arranged vertically. Taking the vertical plane extending along the extension direction of the guide rail 1 and passing through the central axis of the guide rail 1 as the reference plane, the return cover 5 has an oil supply port 56. The oil supply port 56 penetrates the return cover 5, and the center of the oil supply port 56 is located in the reference plane. The oil supply port 56 is located directly above the notch 52.

[0038] Reference Figure 4 , 5 An oil supply groove is provided on the side wall of the return cover 5 facing the slider 2. The oil supply grooves are symmetrically arranged on both sides of the oil supply port 56. Taking the oil supply groove on one side of the notch 52 as an example, the oil supply groove includes a pipe groove 53, a buffer groove 54 and an oil inlet 55. The buffer groove 54 is located between two arc-shaped channels 51 on the same side of the notch 52. There are two oil inlets 55. The two oil inlets 55 are respectively connected to the two arc-shaped channels 51 and the buffer groove 54. One end of the pipe groove 53 is connected to the oil supply port 56 and the other end is connected so that the side of the arc-shaped channel 51 away from the notch 52 bypasses the arc-shaped channel 51 located above and is connected to the buffer groove 54.

[0039] Reference Figure 4 , 6 The oil supply assembly 4 is installed at the end of the slider 2 via a return cover 5. The oil supply assembly 4 of the linear slider 2 includes an oil distribution block 42, two fixing blocks 43, and two oil pipes 41. The oil distribution block 42 is installed inside the oil supply port 56. The two fixing blocks 43 are respectively installed at the ends of the two pipe grooves 53 near the buffer groove 54. The oil pipes 41 are flexible hoses, and the two oil pipes 41 are respectively installed in the two pipe grooves 53. The return cover 5 has a pipe groove 53 on its side wall facing the slider 2. When the return cover 5 is installed at the end of the slider 2, the oil pipes 41 are pressed into the pipe grooves 53, and there is a gap between the oil pipes 41 and the inner wall of the pipe grooves 53. One end of the oil pipe 41 is inserted into the oil distribution block 42, and the other end is inserted into the fixing block 43. The oil distribution block 42 has three ports. One port facing the oil inlet 55 away from the slider 2 is used to connect to an external oil supply system, and the other two ports are respectively connected to the two flexible hoses.

[0040] It should be noted that, referring to Figure 7Both the fixed block 43 and the oil distribution block 42 are provided with connection holes 44 for inserting hoses. The diameter of the connection hole 44 on the oil distribution block 42 is larger than the diameter of the through hole. The hose is inserted into the connection hole 44, and the hose is interference-fitted with the oil distribution block 42. The hose is opposite to the through hole, and the inner diameter of the hose is larger than the inner diameter of the through hole. The fixed block 43 is provided with an oil outlet communicating with the connection hole 44. The oil outlet is communicating with the buffer groove 54. The hose is inserted into the connection hole 44, and the hose is interference-fitted with the fixed block 43. The hose is opposite to the oil outlet, and the inner diameter of the hose is larger than the inner diameter of the oil outlet. When supplying oil to channels with height differences, the capillary effect and sealing performance of the thin hose can more effectively deliver the lubricating oil to the destination.

[0041] In this application, the oil from the external oil supply system is supplied through the oil pipe 41 via the oil distribution block 42. When the lubricating oil flows out from the fixed block 43 through the hose, it passes through a buffer groove 54 and then flows into the channel through two oil injection ports 55, injecting lubricating balls between the slider 2 and the guide rail 1.

[0042] This application uses a hose to directly connect the externally supplied lubricating oil to the internal oil-requiring channels, fundamentally avoiding oil leakage caused by tolerance issues during oil supply in existing technologies. Therefore, the manufacturing precision requirements for the return cover 5 and its internal oil passage grooves are reduced. The use of a hose reduces the machining difficulty of the return cover 5 of the slider 2. Different hoses can be used for different models and installation positions of the slider 2, improving assembly flexibility. Furthermore, the integrated pipeline used in this application provides better sealing, theoretically faster oil delivery speed, higher effective oil delivery volume, and less waste.

[0043] It should be noted that the outer diameters of the hoses on both sides of the oil distribution block 42 are the same. When installed in a horizontal position, the pipes with the same inner diameter are used at both ends. When one end is installed in a higher horizontal position, a hose with a larger inner diameter is used at that end to provide greater oil pressure.

[0044] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined by the scope of the claims.

Claims

1. A linear guide rail with an oil supply assembly, characterized in that, include, The guide rail (1) and the slider (2) that is slidably disposed on the guide rail (1) along the length direction of the guide rail (1); A return cover (5) is provided at the end of the slider (2), and an arc-shaped groove (51) is provided on the side wall of the return cover (5) facing the end of the slider (2); The ball bearing is disposed between the slider (2) and the guide rail (1) and circulates between the slider (2) and the guide rail (1) through the arc-shaped groove (51); The oil supply assembly (4) includes an oil pipe (41) which is disposed between the return cover (5) and the slider (2). One end of the oil pipe (41) is used to connect with an external oil supply system, and the other end is connected with an arc-shaped channel (51).

2. The linear guide rail with an oil supply assembly according to claim 1, characterized in that, The return cover (5) is provided with a notch (52) adapted to the guide rail (1). There are four arc-shaped channels (51). The four arc-shaped channels (51) are arranged in pairs on both sides of the notch (52). The two arc-shaped channels (51) on each side of the notch (52) are arranged in the vertical direction. The oil pipe (41) is symmetrically arranged on both sides of the notch (52). The end of the oil pipe (41) used to communicate with the arc-shaped channel (51) is located between the two arc-shaped channels (51) on the same side.

3. The linear guide rail with an oil supply assembly according to claim 2, characterized in that, The return cover (5) has an oil distribution block (42) embedded on the side wall facing the slider (2) for connecting to the external oil supply system. The oil distribution block (42) has an oil passage. The oil pipe (41) is located on both sides of the oil distribution block (42) and connected to the oil distribution block (42).

4. The linear guide rail with an oil supply assembly according to claim 3, characterized in that, When the connection between the two oil pipes (41) and the oil distribution block (42) is located in the same horizontal plane, the inner diameters of the two oil pipes (41) are the same.

5. The linear guide rail with an oil supply assembly according to claim 3, characterized in that, When there is a height difference between the connection between the two oil pipes (41) and the oil distribution block (42), the inner diameter of the upper oil pipe (41) is larger than that of the other oil pipe (41).

6. The linear guide rail with an oil supply assembly according to claim 1, characterized in that, The return cover (5) has a pipe groove (53) on its side wall facing the slider (2). When the return cover (5) is installed at the end of the slider (2), the oil pipe (41) is pressed into the pipe groove (53), and there is a gap between the oil pipe (41) and the inner wall of the pipe groove (53).

7. The linear guide rail with an oil supply assembly according to claim 1, characterized in that, The oil pipe (41) is a flexible hose, and the outer diameter of the oil pipe (41) is the same.

8. The linear guide rail with an oil supply assembly according to claim 3, characterized in that, The return cover (5) is provided with a buffer groove (54) and an oil inlet (55) on the side wall facing the slider (2). The buffer groove (54) is located between two arc-shaped channels (51) on the same side of the notch (52) and is connected to the end of the pipe groove (53) away from the oil distribution block (42). The number of oil inlets (55) is adapted to the arc-shaped channels (51), and each oil inlet (55) is located between the corresponding arc-shaped channel (51) and the buffer groove (54).

9. The linear guide rail with an oil supply assembly according to claim 8, characterized in that, A fixing block (43) is provided at the end of the pipe groove (53) near the buffer groove (54). An oil outlet connecting the oil pipe (41) and the buffer groove (54) is provided in the fixing block (43). The oil pipe (41) is connected to the fixing block (43).

10. The linear guide rail with an oil supply assembly according to claim 9, characterized in that, Both the fixed block (43) and the oil distribution block (42) are provided with connection holes for inserting oil pipes (41). The connection holes are opposite to the through port and the oil outlet. The diameter of the connection hole on the oil distribution block (42) is larger than the diameter of the through port. The diameter of the connection hole on the fixed block (43) is larger than the diameter of the oil outlet. The oil pipe (41) is interference-fitted with the fixed block (43) and the oil distribution block (42).

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