TW201508187A - Linear guideway with lubrication structure - Google Patents

Abstract

The present invention provides a linear guideway with a lubrication structure, which comprises: a rail configured with a plurality of rolling grooves; a sliding block fitted on the rail and configured with rolling slots with respect to the rolling grooves, in which the rolling grooves and the rolling slots constitute a load path and the sliding block is configured with a plurality of recirculation holes; two end caps respectively disposed on two end surfaces in the axial direction of sliding block, in which the two end caps are respectively configured with a plurality of recirculation routes, and the recirculation route is U-shaped and both the two ends thereof are respectively connected with the load path and the recirculation holes, and the two recirculation routes, one load path and the recirculation holes constitutes a circulation path; a plurality of rolling elements disposed in the circulation path; wherein the end caps are configured with oil channels, and one end of the oil channel is connected with an external oil supply device, and an opening of the other end is adjacent to the load path and configured toward the axial direction.

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.

To achieve the above object, the present invention is a linear slide with a lubricating structure, comprising:

a rail extending in a direction into a strip-like structure, defining the extending direction as an axial direction, and the rail is provided with a plurality of rolling grooves arranged along the axial direction; a slider is sleeved on the rail And a rolling groove corresponding to the rolling groove, the rolling groove and the rolling groove system form a load path, and the slider is provided with a plurality of return holes; the two end covers are respectively disposed at both end faces of the slider in the axial direction The two end caps are respectively provided with a plurality of return passages, the return passages are U-shaped, and the two ends of the end passages respectively engage the load path and the return hole, and the two return passages, a load path and a return hole system are formed. a circulation path; a plurality of rolling elements 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 opening at the other end is adjacent to the load path and Set in the direction of the axis.

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 a flow channel, the axial flow path is engaged with the opening, and a lateral flow path is arranged in a plurality of spaced intervals in a normal direction of the axial direction, and the lateral flow channel is in communication with the axial flow path, the axis The flow path and the lateral flow path form a lubricating oil delivery portion with the inner plane.

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‧‧‧Roads 11‧‧ ‧ Rolling groove 2‧‧‧ Slider 21‧‧‧ Rolling groove 22‧‧‧Return hole 23‧‧‧Inner plane 3‧‧‧ End cap 31‧‧‧ Body 311‧‧ ‧Half return channel 32‧‧‧ Cover 321‧‧‧ Half return channel 33‧‧‧ Oil passage 331‧‧ Open 4‧‧‧ Upper retainer 5‧‧‧ Holder 51‧‧‧ Guide surface 511 ‧‧‧Axial flow path 512‧‧‧Side flow channel Q‧‧‧Angle 6‧‧‧ Lower retainer 7‧‧‧Roller X‧‧‧Axis direction 90‧‧‧Load path 80‧‧‧Lubrication Oil conveying 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, which comprises:

a rail (1) extending in a direction into a strip-like structure defining the extending direction as an axial direction (X), and the rail (1) is provided with four rolling grooves arranged along the axial direction (X) 11); a slider (2) is sleeved on the rail (1), and is provided with a rolling groove (21) opposite to the rolling groove (11), each of the rolling groove (11) and the rolling groove (21) The system constitutes four load paths (90). In this embodiment, four load paths (90) are taken as an example, but two or more of the techniques can be applied to the present invention, and the slider (2) is provided with four return holes (22). The return hole (22) is basically disposed in parallel with the rolling groove (21), and the non-parallel setting may be a processing error; the two end covers (3) are respectively disposed on the axis of the slider (2) The end faces of the direction (X) are respectively provided with four return channels, which are respectively provided by the body (31) and the cover plate (32) of the end cover (3) in this embodiment. Set the half return flow (311, 321) to each other The return channel is formed in a U shape, and the two ends of the return channel are respectively connected to the load path (90) and the return hole (22), and the return channel, a load path (90) and a return hole (22) The system has a circulation path, so in the embodiment, there are four circulation paths; and the end cover (3) is provided with an oil passage (33), and one end of the oil passage (33) is connected to an external oil supply device, The oil supply device is provided with lubricating oil or grease (described below using lubricating oil), and the other end opening (331) is adjacent to the load path (90) and disposed in the axial direction (X); the plurality of rolling elements (7) Provided in each of the circulation paths; in this embodiment, in order to allow the rolling elements (7) to be held on the rolling groove (21) when the slider (2) is detached from the rail (1), the slider is (2) Three holders are provided, which are an upper holder (4), a middle holder (5) and a lower holder (6), respectively, to prevent the rolling member (7) from falling and requiring re-assembly.

The structure and the configuration between the components of the embodiment are described above. The following describes the implementation of the lubricating structure of the present invention:

Referring to the third to sixth figures, the two sides of the slider (2) are respectively provided with two rows of spaced-apart rolling grooves (21), and an inner plane between the two rolling grooves (21). (23), the middle retainer (5) has a guiding surface (51), and the guiding surface (51) and the inner plane (23) are spaced apart to define the inner plane (23) and The guiding surface (51) is a lubricating oil conveying portion (80), and the lubricating oil conveying portion (80) is in communication with the opening (331) of the oil passage (33), and the opening (331) is lubricated. When the oil reaches the lubricating oil conveying portion (80), the lubricating oil flows along the lubricating oil conveying portion (80), that is, flows in the axial direction (X), and gradually goes in the normal direction of the axial direction (X). A load path (90) is flowed to both sides to lubricate each of the rolling elements (7) located in the load path (90).

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 will be deformed due to the long length relationship, so there may be some parts that cannot be completely fitted but this part The final lubrication effect is not caused, and the guiding surface (51) of the retainer (5) is recessed with an axial flow passage (511) disposed along the axial direction (X), the axial flow passage (511) ) is connected to the opening (331), and is provided with a plurality of spaced lateral flow passages (512) in the normal direction of the axial direction (X), the lateral flow passage (512) and the axial flow passage (511) is connected, so that the axial flow passage (511) and the lateral flow passage (512) and the inner plane (23) constitute a lubricating oil conveying portion (80), and when lubricating oil is injected from the opening (331) When the axial flow path (511), The oil will gradually flow to the lateral flow passage (512) to deliver the lubricating oil to each of the rolling members (7) located in the load path (90); in addition, the size of each of the lateral flow passages (512) The system can be different to control the oil output of each section; the structure, configuration and function of the remaining components are the same as those of the first preferred embodiment, and will not be further described herein.

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 engaged with the opening (331), the shaft To the runner (511) and the guide surface ( 1) forming a lubricating oil conveying portion (80) with the inner plane (23), and when the lubricating oil is injected into the axial flow passage (511) from the opening (331), the lubricating oil gradually goes to the guiding surface. Flowing between (51) and the inner plane (23) to convey the lubricating oil to each of the rolling members (7) located in the load path (90); incidentally, in this embodiment, because the guiding surface (51) The distance from the inner plane (23) near the opening (331) is smaller and gradually increases toward the middle position. As shown in Fig. 12, the main purpose of the design is to distribute the lubricating oil evenly. The load path (90), because the injection pressure of the lubricating oil closer to the opening (331) is larger, the size of the smaller pitch allows the lubricating oil to flow to the interval, and the remaining lubricating oil flows toward the lubricating oil conveying portion ( 80) The middle part flows so that the load path (90) of the intermediate part can obtain the lubricating oil instantaneously; the structure, configuration and function of the remaining components are the same as those of the first preferred embodiment, and no more is done here. Above.

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 (6)

A linear slide with a lubricating structure, comprising:
a rail extending in a direction into a strip-like structure, defining the extending direction as an axial direction, and the rail is provided with a plurality of rolling grooves arranged along the axial direction;
a sliding sleeve is disposed on the rail, and is provided with a rolling groove opposite to the rolling groove, the rolling groove and the rolling groove form a load path, and the slider is provided with a plurality of return holes;
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 of the lubricated structure of claim 1, wherein the slider has an inner plane adjacent to the rolling channel. The linear slide rail of the lubricating structure of claim 2, wherein 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 inner surface is defined Between the plane and the guiding surface is a lubricating oil conveying portion that communicates with the opening of the oil passage. The linear slide rail of the lubricating structure of claim 2, wherein the slider is provided with a retainer having a guiding surface, the guiding surface is disposed in conformity with the inner plane, and the retainer is The guiding surface is recessed with an axial flow passage disposed along the axial direction, the axial flow passage is engaged with the opening, and a lateral flow passage is arranged at a plurality of intervals in the normal direction of the axial direction, the lateral direction The flow channel is in communication with the axial flow passage, and the axial flow passage and the lateral flow passage form a lubricating oil delivery portion with the inner surface. The linear slide rail of the lubricating structure according to claim 2, wherein the slider is provided with a retainer, the retainer has a guiding surface, and the guiding surface is disposed at a distance from the inner plane, and the spacing is The dimension is a gradation, and the inner plane and the guiding surface are defined as a lubricating oil conveying portion that communicates with the opening of the oil passage. The linear slide rail of the lubricating structure according to claim 5, wherein the guide surface is recessed with an axial flow passage disposed along the axial direction, and the axial flow passage is engaged with the opening.