TWI509166B - Linear slide with lubricated structure - Google Patents

Description

Linear slide with lubricated structure

The invention is a linear guiding element, in particular a linear sliding rail with a lubricating structure.

A conventional linear slide lubrication structure is known as the technique disclosed in Taiwan Patent No. I221510, which inputs lubricating oil into an end cover of a linear slide and is provided with a three-dimensional space by the end cover. The oil passage guides the lubricating oil to the return tank, and the return tank provides the rolling element for circulation, so that when the rolling member runs through the return tank, the lubricating oil can be applied, so that the rolling member can smoothly run on the slider and the rail. To extend the life of the linear slide.

However, the linear slide rail with the above-mentioned lubricating structure is not suitable for the micro-inch moving device, and the mechanism of the micro-inching device only performs a little reciprocating back and forth movement, that is, the slider only repeats the reciprocating operation with respect to the rail. Distance, and the distance will vary according to the size of the linear slide. The common distance is between 5mm and 20mm. Therefore, the rolling element disposed between the slider and the rail can not run to the return groove for lubrication, and can be smooth. The lubricated rolling elements are only fixed in the vicinity of the return groove, so long-term wear will cause wear between the unlubricated rolling elements and the slider and the rail, resulting in damage or poor running or noise generation. Therefore, such a lubricating structure is still necessary for improvement.

In view of the above problems, the object of the invention is to develop a lubricating structure which can improve the uneven lubrication of the above-mentioned use environment, and the lubricating structure is also commonly used in various linear slide applications.

In order to achieve the above object, the present invention is a linear slide rail with a lubricating structure, comprising: a rail extending in a direction into an elongated structure, defining the extending direction as an axial direction, and the rail is set a plurality of rolling grooves arranged along the axial direction; a slider sleeved on the rail and having a rolling groove opposite to the rolling groove, the rolling groove and the rolling groove forming a load path, and the sliding device is arranged There are a plurality of return holes; the two end covers are respectively disposed at both end faces of the slider in the axial direction, and the end caps are respectively provided with a plurality of return channels, the return flow is a U shape, and the two ends are respectively connected The load path and the return hole, and the two return channels, a load path and the return hole system form a circulation path; a plurality of rolling elements are disposed in the circulation path; wherein the end cover is provided with an oil passage, the oil One end of the track is connected to the external oil supply device, and the opening at the other end is adjacent to the load path and disposed in the axial direction.

Preferably, the slider has an inner plane adjacent to the rolling channel.

Preferably, the slider is provided with a retainer having a guiding surface disposed at a distance from the inner plane and defining a distance between the inner plane and the guiding surface as lubricating oil A conveying portion that communicates with an opening of the oil passage.

Preferably, the slider is provided with a retainer having a guiding surface, the guiding surface is disposed in contact with the inner plane, and the guiding surface of the retainer is concavely provided with an axis disposed along the axial direction To the flow channel, the axial flow channel is connected to the opening, and the axial side a lateral flow passage is arranged in a plurality of spaced intervals in the normal direction, and the lateral flow passage is in communication with the axial flow passage, and the axial flow passage and the lateral flow passage system and the inner plane constitute a lubricating oil conveying unit.

Preferably, the slider is provided with a retainer having a guiding surface, the guiding surface is disposed at a distance from the inner plane, and the spacing is a gradient, and the inner plane is defined with the guiding The surfaces between the faces are a lubricating oil conveying portion that communicates with the opening of the oil passage. This allows the lubricant to be evenly distributed over the load path.

Thereby, the lubricating oil can directly lubricate the rolling elements located in the load path to improve the problems of the prior art.

1‧‧‧ rails

11‧‧‧ rolling groove

2‧‧‧ Slider

21‧‧‧ rolling trough

22‧‧‧Reflow hole

23‧‧‧ inner plane

3‧‧‧End cover

31‧‧‧Ontology

311‧‧‧Half return flow

32‧‧‧ Cover

321‧‧‧Half return flow

33‧‧‧ oil passage

331‧‧‧ openings

4‧‧‧Upper holder

5‧‧‧中中器

51‧‧‧ Guide surface

511‧‧‧Axial runner

512‧‧‧lateral flow channel

Q‧‧‧ angle

6‧‧‧ lower retainer

7‧‧‧Rolling parts

X‧‧‧axis direction

90‧‧‧Load path

80‧‧‧Lubricating Oil Delivery Department

The first figure is a system diagram of a linear slide with a lubricating structure according to a first preferred embodiment of the present invention.

The second figure is a combination diagram of a linear slide with a lubricating structure according to a first preferred embodiment of the present invention.

The third figure is a cross-sectional view of the second diagram A-A.

The fourth figure is a cross-sectional view of the second figure B-B.

The fifth figure is a cross-sectional view of the slider of the second figure in the axial direction.

Figure 6 is a cross-sectional view showing a linear slide of the lubricating structure of the first preferred embodiment of the present invention.

Figure 7 is a system diagram of a linear slide with a lubricated structure in accordance with a second preferred embodiment of the present invention.

8 and 9 are cross-sectional views of a transverse direction and an axial direction of a linear slide having a lubricating structure according to a second preferred embodiment of the present invention.

Figure 11 is a system diagram of a linear slide with a lubricating structure according to a third preferred embodiment of the present invention.

11 and 12 are cross-sectional views showing a transverse direction and an axial direction of a linear slide rail having a lubricating structure according to a third preferred embodiment of the present invention.

Referring to the first to sixth figures, which are diagrams of the first preferred embodiment, the present invention is a linear slide rail with a lubricating structure, comprising: a rail (1) in one direction Extending into a long strip structure, defining the extending direction as an axial direction (X), and the rail (1) is provided with four rolling grooves (11) arranged along the axial direction (X); a slider (2), Nested on the rail (1), and provided with a rolling groove (21) opposite to the rolling groove (11), each of the rolling groove (11) and the rolling groove (21) constitutes four load paths (90), The embodiment is exemplified by four load paths (90), but the technique of the present invention can be applied to more than two, and the slider (2) is provided with four return holes (22), and the return holes (22) are basically The rolling grooves (21) are arranged in parallel, and the non-parallel setting may be an error in processing; the two end covers (3) are respectively disposed on both end faces of the axial direction (X) of the slider (2), and the two ends are respectively The cover (3) is provided with four return passages respectively. The return passage is in the embodiment, and the half return passages (311, 321) provided by the main body (31) of the end cover (3) and the cover plate (32) are mutually connected. Formed by a combination, the return channel is a U shape, The end system respectively connects the load path (90) and the return hole (22), and the two return channels, a load path (90) and the return hole (22) form a circulation path, so in the embodiment, there are four lines. a circulation path; and the end cover (3) is provided with an oil passage (33), one end of the oil passage (33) is connected to an external oil supply device, and the oil supply device provides lubricating oil or lubrication Grease (described below using lubricating oil), the other end opening (331) is adjacent to the load path (90) and disposed in the axial direction (X); a plurality of rolling elements (7) are disposed in each of the circulation paths In this embodiment, in order to allow the rolling elements (7) to remain on the rolling groove (21) when the slider (2) is detached from the rail (1), three holdings are provided on the slider (2). The upper holder (4), the middle holder (5) and the lower holder (6) are respectively used to prevent the rolling member (7) from falling and need to be reassembled.

The structure and the configuration between the components of the present embodiment are described above. The following describes the implementation of the lubricating structure of the present invention: Please refer to the third to sixth figures, the two sides of the slider (2) are respectively provided Two rows of spaced apart rolling grooves (21) having an inner plane (23) between the two rolling grooves (21), the middle retainer (5) having a guiding surface (51), the guiding A gap is disposed between the surface (51) and the inner plane (23), and a lubricant conveying portion (80) is defined between the inner plane (23) and the guiding surface (51). (80) is in communication with the opening (331) of the oil passage (33). When the opening (331) delivers lubricating oil to the lubricating oil conveying portion (80), the lubricating oil passes along the lubricating oil conveying portion (80). Flowing, that is, flowing along the axial direction (X), and gradually flowing to the normal side of the axial direction (X) to the load paths (90) on both sides to lubricate the rolling elements located in the load path (90) (7).

Furthermore, referring to the seventh to ninth drawings, which are diagrams of the second preferred embodiment, the present embodiment differs from the first preferred embodiment in that the guiding surface of the middle holder (5) (51) is attached to the inner plane (23), but since the middle retainer (5) is plastic injection molding, it is inevitable that it is deformed due to a long length relationship. Therefore, there may be some parts that cannot be completely fitted, but this part does not ignite the final lubrication effect, and the guiding surface (51) of the holder (5) is recessed with an axial flow path arranged along the axial direction (X). (511), the axial flow passage (511) is engaged with the opening (331), and a lateral flow passage (512) arranged at a plurality of intervals in the normal direction of the axial direction (X), the lateral flow The passage (512) is in communication with the axial flow passage (511), so the axial flow passage (511) and the lateral flow passage (512) and the inner plane (23) constitute a lubricating oil conveying portion (80) When the lubricating oil is injected into the axial flow passage (511) from the opening (331), the lubricating oil gradually flows to the lateral flow passage (512) to transport the lubricating oil to the load path (90). Each of the rolling members (7); in addition, the size of each of the lateral flow passages (512) may be different to control the amount of lubricating oil discharged from each section; the structure, configuration and function of the remaining components are A preferred embodiment is the same and will not be described again here.

Finally, please refer to the drawings of the third preferred embodiment shown in the tenth to twelfth drawings. The difference between the present embodiment and the first preferred embodiment is that the guiding surface of the middle retainer (5) (51) is a V-shaped structure, that is to say, the guiding surface (51) is formed by two planes having an angle (Q) with each other, or may be a plurality of planes having an angle with each other, or may be a circle The arcuate curved surface is formed; therefore, the guiding surface (51) is disposed at a distance from the inner plane (23) because the guiding surface (51) is designed such that the spacing is gradual. Depending on the design of the guiding surface (51), the size of each section may be different. In the embodiment, the plane is symmetrically designed, so the spacing of the same position of the two planes is the same, and the retention is the same. The guiding surface (51) of the device (5) is recessed with an axial flow passage (511) disposed along the axial direction (X), and the axial flow passage (511) is coupled thereto. The opening (331) is engaged, and the axial flow path (511) and the guiding surface (51) form a lubricating oil conveying portion (80) with the inner surface (23), and the lubricating oil is injected into the opening (331) In the axial flow path (511), the lubricating oil gradually flows between the guiding surface (51) and the inner plane (23) to transport the lubricating oil to the rolling elements located in the load path (90) ( 7); Incidentally, in the present embodiment, since the distance between the guiding surface (51) and the inner plane (23) near the opening (331) is small, the intermediate position gradually becomes larger, such as As shown in Fig. 12, the main purpose of this design is to distribute the lubricating oil evenly over the load path (90), because the injection pressure of the lubricating oil closer to the opening (331) is larger, so the smaller pitch size allows The lubricating oil flows to the interval, and the remaining lubricating oil flows to the middle portion of the lubricating oil conveying portion (80), so that the load path (90) of the intermediate portion can obtain the lubricating oil instantaneously; the structure, configuration and efficacy of the remaining components It is the same as the first preferred embodiment, and details are not described herein again.

In view of the above, the "industrial availability" of the present invention should be unquestionable. In addition, the feature technology disclosed in the embodiment of the present invention has not been seen in publications before the application, nor has it been disclosed. The use of not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention are in compliance with the patent regulations, and the application for the invention patent is filed according to law. Please give us a review and grant a patent as soon as possible.

The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.

1‧‧‧ rails

2‧‧‧ Slider

3‧‧‧End cover

33‧‧‧ oil passage

331‧‧‧ openings

5‧‧‧中中器

7‧‧‧Rolling parts

X‧‧‧axis direction

90‧‧‧Load path

80‧‧‧Lubricating Oil Delivery Department

Claims (3)

The utility model relates to a linear slide rail with a lubricating structure, comprising: a rail strip extending in a direction into an elongated strip structure, wherein the extending direction is an axial direction, and the rail strip is provided with a plurality of rolling grooves arranged along the axial direction; a sliding sleeve is sleeved on the rail and has a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a load path. The slider is provided with a plurality of return holes, the slider has an inner plane adjacent to the rolling slot, and the slider is provided with a retainer, the retainer has a guiding surface, and the guiding surface is matched with the inner plane The guide surface of the retainer is recessed with an axial flow passage disposed along the axial direction, the axial flow passage is engaged with the opening, and the lateral direction of the axial direction is provided with a plurality of spaced lateral directions. a flow passage, the lateral flow passage is in communication with the axial flow passage, the axial flow passage and the lateral flow passage system and the inner plane form a lubricating oil conveying portion; the two end covers are respectively disposed on the slider The end faces of the axial direction are respectively provided with a plurality of return passages, wherein the return passages are U-shaped, and the two ends are respectively connected to the load path and the return hole, and the two return passages and a load are respectively The path and the return hole form a circulation path; the plurality of rolling elements are disposed in the circulation path; wherein the end cover is provided with an oil passage, one end of the oil passage is connected to the external oil supply device, and the other end is open Adjacent to the load path and disposed in the axial direction. The utility model relates to a linear slide rail with a lubricating structure, comprising: a rail strip extending in a direction into an elongated strip structure, wherein the extending direction is an axial direction, and the rail strip is provided with a plurality of rolling grooves arranged along the axial direction; a slider sleeve is disposed on the rail and has a rolling groove opposite to the rolling groove The sliding groove and the rolling groove form a load path, the slider is provided with a plurality of return holes, the slider has an inner plane adjacent to the rolling groove, and the slider is provided with a retainer having a guiding surface. The guiding surface is disposed at a distance from the inner plane, and the spacing is gradual. The inner plane and the guiding surface are defined as a lubricating oil conveying portion, and the lubricating oil conveying portion is coupled to the oil passage. The openings are connected. The two end covers are respectively disposed on both end faces of the slider in the axial direction, and the end caps are respectively provided with a plurality of return passages, wherein the return passages are U-shaped, and the two ends of the end are respectively connected to the load path and the a return hole, and the two return channels, a load path and a return hole form a circulation path; a plurality of rolling elements are disposed in the circulation path; wherein the end cover is provided with an oil passage, and one end of the oil passage is The external oil supply device is connected, and the opening at the other end is adjacent to the load path and disposed in the axial direction. The linear slide rail of the lubricating structure according to claim 2, wherein the guide surface is recessed with an axial flow passage disposed along an axial direction, and the axial flow passage is engaged with the opening.