JP4384072B2 - Linear guide way lubricator - Google Patents

Description

  The present invention relates to a linear guide way lubrication device, and more particularly to a linear guide way having a sealed oil passage inside the device and capable of uniformly lubricating each rolling element. The present invention relates to a lubricating device.

  In general, the purpose of installing a lubrication device on the linear guide way is to lubricate the rolling elements inside the fuselage to reduce its rolling friction force so that it can roll smoothly, and the entire linear guide way can be operated. It is in the place where it is lightened and the durability is strengthened.

  The linear guide way is usually lubricated directly or indirectly from the end of the slider.

As an example of the improvement, the one disclosed in US Pat. No. 5,399,023 is shown in FIG.
According to this figure, an oil passage 61 is attached to the scraper 6, and a sponge 62 for controlling the oil outflow amount and an oil outflow hole 63 are provided at the end thereof.

  Since the oil passage 61 is mounted on the scraper 6, it has good sealing performance, and when used in a centralized piping system, oil leakage in the oil passage is well suppressed. However, such a configuration requires a large number of components and complicates assembly. Therefore, the manufacturing cost is also increased.

  Further, as an example, German Patent No. 4424795 is shown in FIGS. The linear guide way 7 includes a slider 8 and a guide rail 9, and a plurality of rolling elements 82 are provided in a rotation space 81 in one direction of the slider 8. An oil filling port 83 provided in the slider 8 communicates with the oil passage 84 and lubricates the plurality of rolling elements 82 with the lubricating oil injected from the oil filling port 83.

  However, the sealing of the oil passage 84 only depends on the contact between the guide rail 9 and the slider 8, and in this case, when the above-described central oil supply line system is adopted, if the lubricating oil pressure is too high, oil leakage will occur. Occur.

  The above two known documents have drawbacks such as oil leakage, complexity of assembly and noise induction due to insufficient lubrication, and there is room for improvement.

  The present invention has been made in view of the above points. The object of the present invention is to make an end cover of a lubrication device from a metal or resin-based material, and to form a lower polymer body of a polymer system rich in elasticity. It is an object of the present invention to provide a linear guide way lubrication device that can form a tight seal in contact between the two, and can keep the oil flow path formed between them completely sealed.

  Another object of the present invention is to provide a linear guide way lubricating device having a function of a continuous oil passage by communicating an oil passage composed of a gap left in an oil passage of an end cover and a lower structure. It is to provide.

  Another object of the present invention is to use a material softer than that of the end cover for the material constituting the lower structure, and to effectively absorb the shock and noise when the rolling element is reversed by the buffer. It is an object of the present invention to provide a lubrication device for a linear guide way.

In order to achieve the above object, the first invention is a linear guide way lubrication device in which a hollow portion recessed inside is communicated with each other through an oil passage, and a rolling element is rotated and reversed. An end cover comprising a pair of symmetrically projecting protrusions projecting in parallel from the lumen portion, and an oil supply hole communicating with the lumen portion; A gap is formed on the inside to form a passage that communicates with the oil passage of the end cover, and on both sides, the thickness of the bottom portion is increased in the middle corresponding to the middle of the two rotating parts of the end cover . Protruding portions having the same shape corresponding to the rotating portion of the end cover provided with a buffer portion are formed, and the buffer portion is provided with a position corresponding to the rotating portion of the end cover. An oil outlet hole is established to communicate with the oil passage, and the end A lower structure that is softer than the end cover attached to one side surface of the bar, and the lower structure has a protrusion of the same shape corresponding to the rotating portion of the end cover. The buffer part is inserted into the middle position of the two rotary parts and assembled in close contact with the end cover, and the buffer part of the lower structure is also rotated by the end cover. The gap between the oil passage of the end cover and the lower structure is also connected to each other to form a sealed oil passage, and the lubricating oil injected from the lubrication hole is filled with this passage. The linear guide way lubrication device is characterized in that the rolling elements and the guide rails are uniformly lubricated without leaking via the above.
According to a second aspect of the present invention, there is provided the linear guide way lubrication device according to the first aspect, wherein the lower structure is made of a high-molecular polymer material rich in elasticity.
A third invention provides a lubricating device for a linear guide way according to the first invention, wherein the hardness of the lower structure is shore 40A to shore 82D.

  The linear guide way lubrication device according to the present invention has the following advantages compared to conventional products.

(1) Since the lower structure is made of a high polymer material that is rich in elasticity, the contact with the harder end cover is tighter and the oil flow path formed between them is completely sealed. Because it is maintained, there is no worry of oil leakage.

(2) Corresponding to the upper and lower rotating parts of the end cover, with a gap left inside the lower structure that forms a passage that communicates with the oil passage of the end cover, and a buffer part in the middle on both sides. Therefore, the lubricating oil can be stably and uniformly supplied to the upper and lower bi-directional rotating parts.

(3) Since the lower structure is made of a polymer material rich in elasticity, when the rolling element is reversed by the buffer portion, the impact force can be alleviated and noise can be suppressed.

The best mode of the present invention will be described with reference to FIGS.
The lubricating device for a linear guide way according to the present invention includes an end cover 1 and a lower structure 2.
The end cover 1 is made of a metal or a resin material, and has a hollow portion 11 recessed therein, and an oiling hole 16 is formed in the middle thereof.
The end cover 1 has a pair of projecting portions 12 having a symmetric shape, and the projecting portions 12 form an upward rotating portion 121 and a downward rotating portion 122 communicated by an oil passage 13.
Lubricating holes 14 (see FIGS. 1 and 4) facing each other on both sides of the end cover 1 are opened and communicated with the lumen portion 11 via the circular holes 15.

The lower structure 2 made of a high-molecular polymer material rich in elasticity and having a hardness of shore 40A to shore 82D is left with a gap 21 that forms a passage communicating with the oil passage 13 of the end cover 1 inside. A single continuous and sealed lubricating oil passage 3 is formed with the oil passage 13 of the cover 1.
On both sides of the lower structure 2, there are formed protrusions of the same shape corresponding to the upper and lower both-direction rotating portions 121 and 122 of the end cover 1 provided with buffer portions 22 in the middle. Is provided with an oil discharge hole 23 which communicates with the oil passage 3 of the end cover 1 at a position corresponding to both the upward and downward rotating portions 121 and 122 (see FIG. 5).

The embodiment of the present invention will be described in more detail with reference to FIG.
The lower structure 2 is attached to the end cover 1 in close contact therewith, and the buffer part 22 of the lower structure 2 is also fitted in the middle position between the upper and lower direction rotating parts 121, 122 of the end cover 1, The end cover 1 and the lower structure 2 are assembled together exactly.

Oil thus Inside the the end cover 1 is assembled with the lower structure 2, the lubricating device and the oil passage 13 of the end cover 1 and the gap 2 1 of the lower structure 2 is continuous and sealed through phase Road 3 is formed.
The oil passage 3 extends to reach an intermediate position 123 (see FIG. 4) between the upper and lower rotating portions 121 and 122, and the lubricating oil injected from the side oil supply hole 14 or the intermediate oil supply hole 6 is separated by a gap 21. To the intermediate position 123 of the upper and lower rotating parts 121, 122 through the oil passage 3, and through the oil outlet hole 23, the lubricating oil is supplied to each of the rolling elements (not shown) and the guide rail ( (Not shown) to lubricate them.

Since the gap 21 between the oil passage 13 of the end cover 1 and the lower structure 2 is symmetrical with the left and right upper rotating parts 121 and 122, the lubricating oil injected from the side oil supply holes 14 is a circular hole. The lubricating oil that enters the lumen portion 11 via 15 or injected from the intermediate oil filling hole 16 also enters the lumen portion 11.
The lubricating oil in the oil passage 3 of all the mechanisms sealed by the upper end cover 1 and the lower structure 2 circulates smoothly at a stable speed, and the lubricating oil is uniformly distributed in the upper and lower rotating parts 121. , And is supplied to each of the rolling elements and the guide rail from the oil discharge hole 23 of the buffer portion 22.

This will be described with reference to FIGS.
The lower structure 2 is made of an elastic high polymer material such as thermosetting, thermoplastic, or thermosetting rubber. The lower structure 2 is made of a general metal or resin material. Since they are softer than the material of the end cover 1, when they are combined, they tightly adhere to each other and are united together, and there is no fear of contaminating the surroundings due to oil leakage from the oil passage 13.
In addition, the lower structure 2 made of a rubber material or the like has a function of withstanding abrasion, sealing the oil passage, and suppressing vibration, impact and noise when the rolling element is reversed by the buffer 22. is there.

The three-dimensional exploded view seen from the left rear of the lubricating device for the linear guide way according to the present invention The three-dimensional exploded view seen from the right front of the lubricating device for the linear guide way according to the present invention The three-dimensional exploded view seen from the right rear of the lubricating device for the linear guide way according to the present invention Front view of end cover and lower structure of linear guide way lubricating device according to the present invention Front view of end cover and lower structure of linear guide way lubricating device according to the present invention Schematic of a continuous oil passage composed of an oil passage of an end cover and a gap inside the lower structure of the linear guide way lubricating device according to the present invention. Front view of a first example of a conventional linear guide way lubrication device Local sectional view of a second example of a conventional linear guide way lubricating device Sectional view of a third example of a conventional linear guide way

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... End cover 11 ... Internal cavity part 12 ... Projection part 121 ... Upward rotation part 122 ... Downward rotation part 123 ... Intermediate position 13 ... Oil passage 14 ... Side lubrication hole 15 ... Round hole 16 ... Intermediate lubrication hole 2 ... Lower structure (internal structure)
21... Distribution gap 22... Buffer part 23... Oil discharge hole 3 ... Oil passage 6 ... Scraper 61 ... Oil passage 62 ... Sponge 63 ··· Outlet 7 ··· Linear guide way 8 · · · Slider 81 · · · Direction rotating space 82 · · · Roller 83 · · · Lubricating hole 84 .... Oil passage 9 ... Guide rail

Claims (3)

In the linear guide way lubrication system,
A pair of symmetrical shapes having a hollow portion recessed inside and two rotating portions that communicate with each other via an oil passage and that allow the rolling element to rotate and reverse. An end cover including a projecting portion projecting in parallel from the lumen portion, and an oil supply hole communicating with the lumen portion;
A gap for forming a passage that communicates with the oil passage of the end cover is left inside, and on both sides of the gap, the thickness of the bottom becomes thicker in the middle corresponding to the middle of the two rotating parts of the end cover. A protruding portion having the same shape corresponding to the rotating portion of the end cover is provided, and the end cover is provided at a position corresponding to the rotating portion. An oil discharge hole that communicates with the oil passage, and includes a lower structure that is softer than the end cover and attached to one side of the end cover,
In the lower structure, a protruding portion having the same shape corresponding to the rotating portion of the end cover is fitted in the rotating portion of the end cover, and the buffer portion is fitted in an intermediate position between the two rotating portions. , Assembled in close contact with the end cover,
The buffer part of the lower structure is also fitted in the middle position of the rotating part of the end cover,
The gap between the oil passage of the end cover and the lower structure is also in communication with each other to form a sealed oil passage,
The lubricating oil injected from the oil injection hole is configured to uniformly lubricate the rolling element and the guide rail without leaking through this passage.
Linear guide way lubricator.   2. The linear guide way lubrication device according to claim 1, wherein the lower structure is made of a high-molecular polymer material rich in elasticity. The linear guide way lubrication device according to claim 1 or 2, wherein the hardness of the lower structure is shore 40A to shore 82D.

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