WO2016136778A1

WO2016136778A1 - Oil supply device for rolling bearing guide device, and rolling bearing guide device

Info

Publication number: WO2016136778A1
Application number: PCT/JP2016/055352
Authority: WO
Inventors: 頌明山岸
Original assignee: 日本精工株式会社
Priority date: 2015-02-25
Filing date: 2016-02-24
Publication date: 2016-09-01
Also published as: TW201641834A; CN107110207A; TWI593892B; CN107110207B

Abstract

An oil supply device for a rolling bearing guide device, provided with: a holder 16 for holding a lubricant; an applicator 17 for applying the lubricant to a guide rail 2; and a container 18 for accommodating the holder 16 and the applicator 17. The container 18 is provided with a holder accommodation part 22 that accommodates the holder 16 and an applicator accommodation part 23 that accommodates the applicator 17, arranged linearly in the lateral direction of the guide rail 2. An opening part 21 for guiding the lubricant from the holder accommodation part 22 to the applicator accommodation part 23 is formed in a partition part 19 dividing the applicator accommodation part 23 and the holder accommodation part 22. The opening part 21 comprises a small opening section 21a located on the applicator accommodation part 23 side and a large opening section 21b located on the holder accommodation part 22 side. The holder 16 is provided with a protrusion section 16a capable of fitting in the large opening section 21b. Thus, the present invention provides an oil supply device for a rolling bearing guide device capable of applying sufficient lubricant to a guide rail, and a rolling bearing guide device provided therewith.

Description

Oil supply device for rolling bearing guide device, rolling bearing guide device

The present invention relates to a lubrication device for a rolling bearing guide device and a rolling bearing guide device.

Conventionally, as a rolling bearing guide device, a linear motion guide device having a linearly extending guide rail and a curved motion guide device having a curved guide rail are known. In particular, as a linear motion guide device, one having an oil supply device for supplying lubricating oil to a guide rail is also known.

An oil supply device has been proposed that has an application body that applies lubricating oil to a guide rail and an occlusion body that supplies lubricating oil to the application body while occluding the lubricating oil. For example, see Japanese Patent No. 3288961 and Japanese Patent No. 411585. In this oil supply apparatus, in order to limit the amount of lubricating oil supplied from the occlusion body to the application body, a separator having a lubricating oil supply hole is disposed between the occlusion body and the application body.

Japanese Patent No. 3288961 Japanese Patent No. 4111585

However, in the conventional oil supply apparatus as described above, the occlusion body and the application body are arranged side by side in the longitudinal direction of the guide rail, and the supply hole of the separator plate penetrates in the longitudinal direction. For this reason, the lubricating oil occluded in the occlusion body diffuses in the longitudinal direction in the coating body through the supply hole. Therefore, the lubricating oil hardly diffuses in the direction perpendicular to the longitudinal direction within the application body, and therefore the amount of the lubricating oil reaching the portion of the application body that contacts the guide rail is reduced. As a result, there has been a problem that the lubricating oil cannot be sufficiently applied to the guide rail.

Accordingly, the present invention has been made in view of the above-described problems, and provides a rolling bearing guide device lubrication device capable of sufficiently applying a lubricant to a guide rail and a rolling bearing guide device including the same. With the goal.

In order to solve the above problems, the present invention
A holding body for holding a lubricant;
An application body for applying a lubricant to the guide rail;
Containing the application body and the holding body, and having a container disposed at an end of the slider in the longitudinal direction;
The container is provided with a holding body storage section for storing the holding body and an application body storage section for storing the application body arranged in a short direction of the guide rail, and the application body storage section and the holding body. An opening for guiding the lubricant from the holder storage part to the application body storage part is formed in the partition part that partitions the storage part,
The opening comprises a small opening located on the application body storage portion side and a large opening located on the holding body storage portion side and larger than the small opening,
The holding body includes a protrusion that can be fitted into the large opening, and provides a lubrication device for a rolling bearing guide device.

The present invention also provides:
Provided is a rolling bearing guide device comprising the oil supply device for the rolling bearing guide device.

According to the present invention, it is possible to provide a lubrication device for a rolling bearing guide device capable of sufficiently applying a lubricant to a guide rail and a rolling bearing guide device provided with the same.

1A and 1B are an external view and a side view of the linear guide device of the first embodiment. 2A and 2B are a side view of the slider main body and a diagram showing an end surface of the slider main body in the first embodiment. 3A and 3B are a front view and a rear view of the end cap in the first embodiment. FIG. 4 is a view showing a side seal in the first embodiment. 5A, FIG. 5B, and FIG. 5C are a rear view of the fueling device according to the first embodiment (a state in which the lid is removed), an enlarged cross-sectional view of a communication hole portion in the fueling device, and a modification thereof. 6A and 6B are a front view and a side view of a holding body in the fueling device according to the first embodiment. 7A and 7B are a front view and a side view of an application body in the oil supply apparatus according to the first embodiment. 8A, 8B, and 8C are a rear view, a side view, and an enlarged cross-sectional view of a communication hole portion of the lubricant container in the oil supply device according to the first embodiment. FIG. 9A and FIG. 9B are a front view and a side view of a lid in the fueling apparatus according to the first embodiment. 10A and 10B are a cross-sectional view taken along line 10A-10A in FIG. 5A and a cross-sectional view taken along line 10B-10B in FIG. 5A (both with a lid attached). FIG. 11A to FIG. 11C are views sequentially illustrating the manner in which the oil supply device 7 according to the first embodiment is attached to the slider body 4 (the views showing the end face and side face of the slider). 12A and 12B are an external view and a side view of the linear guide device of the second embodiment. 13A and 13B are a rear view (with the lid removed) and an enlarged cross-sectional view of the cutout portion of the fueling device according to the second embodiment, and FIG. 13C is sufficient for the holding body in FIG. 13B. It is a figure which shows the mode of a press member (solid line) when the press member (dotted line) in case the quantity of lubricant is hold | maintained, and the lubricant which a holding body hold | maintains decreases. 14A and 14B are a cross-sectional view taken along line 14A-14A in FIG. 13A and a cross-sectional view taken along line 14B-14B in FIG. 13A (both with a lid attached). FIG. 15A is an enlarged cross-sectional view showing a modification of the notch portion in the fueling device according to the second embodiment, and FIG. 15B is a case where a sufficient amount of lubricant is held in the holding body in FIG. 15A. It is a figure which shows the mode of a press member (solid line) when the lubricant which a press member (dotted line) and a holding body hold | maintain decreases.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A linear motion guide device including a rolling bearing guide device oil supply device (hereinafter simply referred to as “oil supply device”) according to each embodiment of the present invention will be described with reference to the accompanying drawings.

(First embodiment)
First, the overall configuration of a linear motion guide device (linear guide device) including an oil supply device according to the present embodiment will be described with reference to FIG.
A linear guide device 1 according to this embodiment shown in FIG. 1 is suitable for a numerically controlled machine tool, a numerically controlled measuring machine, and the like, and includes a guide rail 2 and a slider 3 that can move along the guide rail 2. .

The guide rail 2 is made of a substantially quadrangular columnar metal member, and two rolling grooves 2a extending in the longitudinal direction are formed on both side surfaces thereof.
The slider 3 includes a slider main body 4, an end cap 5, an oil supply device 7, and a side seal 8 that are attached in order from the slider main body 4 side to the longitudinal direction of the slider main body 4, that is, the left and right ends in FIG. 1B. Become.

As shown in FIGS. 1A and 2, the slider body 4 is made of a metal member that extends in the longitudinal direction of the guide rail 2 and has a substantially U-shaped cross section, and straddles the guide rail 2. As shown in FIG. 2B, a portion of the slider body 4 facing the both side surfaces of the guide rail 2, that is, the inner side surface of the leg portions on both sides, is a roll extending in the longitudinal direction facing the rolling groove 2 a of the guide rail 2. Two moving grooves 4a are formed.

The rolling groove 4a of the slider body 4 and the rolling groove 2a of the guide rail 2 form a rolling path of a rolling element (not shown). The rolling path is loaded with a plurality of balls as rolling elements.
As shown in FIG. 2B, two return paths 4b penetrating in the longitudinal direction of the slider body 4, that is, in the direction perpendicular to the paper surface of FIG. Further, two

screw holes

11 and 12 are formed in each end face of the slider body 4.

The end cap 5 is a resin member and has a substantially U-shape as shown in FIG. On the front surface of the end cap 5, that is, the surface on the slider body 4 side, two direction change paths 5a for connecting the rolling path and the return path 4b are formed on both leg portions. The end cap 5 is formed with circular through

holes

13 and 14 at positions facing the screw holes 11 and 12 of the slider body 4. The end cap 5 is not limited to resin, but may be made of metal.

With the above configuration, the slider 3 can linearly move on the guide rail 2 as a plurality of rolling elements roll in the rolling path. In addition, a some rolling element can circulate through a rolling path, the direction change path 5a, and the return path 4b.

The side seal 8 is a substantially U-shaped resin plate member as shown in FIG. 4, and has a shape straddling the both side surfaces and the upper surface of the guide rail 2. With the side seal 8 having such a shape, when the slider 3 is linearly moved on the guide rail 2, foreign matters such as dust, dust and dirt adhering to both side surfaces and the upper surface of the guide rail 2 can be removed. it can. The side seal 8 is formed with circular through holes 9 at positions facing the screw holes 12 of the slider body 4.

Next, the most characteristic configuration of the fueling device 7 in the present embodiment will be described.
The oil supply device 7 according to the present embodiment supplies oil, that is, a lubricant to the guide rail 2. As shown in FIG. 5, as shown in FIG. The applicator 17 is composed of a lubricant container 18 that houses them.

The holding body 16 is a thick plate-like member having a substantially U shape as shown in FIG. 6 and is made of a resin-made porous molded body containing a large amount of a lubricant. Columnar protrusions 16a that can be fitted into large diameter portions 21b of communication holes 21 provided in a partition portion 19 (described later) of the lubricant container 18 are integrally formed on the inner side surfaces of the leg portions on both sides of the holding body 16. Is provided. The leg portions on both sides of the holding body 16 are formed with arc-shaped notches 16b at positions facing a through hole 27 (described later) of the lubricant container 18.

The application body 17 is for applying a lubricant in contact with both side surfaces and the upper surface of the guide rail 2. As shown in FIG. 7, the application body 17 is a thin plate-like member having a substantially U shape smaller than the holding body 16, and is formed of a resin-made porous molded body having a higher density than the holding body 16. The inner surface of the application body 17 has a shape along the outer shape of the guide rail 2 so as to be in contact with both side surfaces and the upper surface of the guide rail 2. More specifically, a lip portion 17 a that can contact the rolling grooves 2 a on both side surfaces of the guide rail 2 is provided on the inner side surface of the application body 17. In addition, rectangular cutout portions 17 b are formed on the inner side surfaces of the leg ends on both sides of the application body 17.

Lubricant container 18 has a substantially U shape as shown in FIG. 8 and is a resin thick plate member having substantially the same outer shape as end cap 5. As shown in FIG. 8A, on the back surface of the lubricant container 18, that is, on the outer surface in the longitudinal direction of the slider 3, a holding body storage portion 22 that stores the holding body 16 and an application body storage portion 23 that stores the application body 17. Is provided. A circular through hole 27 is formed in the lubricant container 18 at a position facing the screw hole 12 of the slider body 4.

The holding body storage portion 22 is formed of a substantially U-shaped concave portion with a bottom as shown in FIG. 8, and can hold the holding body 16 without a gap. The holding body storage unit 22 has a deeper bottom than the application body storage unit 23 and is provided in the lubricant container 18 so as to surround the application body storage unit 23, and thus has a larger volume than the application body storage unit 23.

As shown in FIG. 8, the application body storage portion 23 is formed of a concave portion having a substantially U-shape and a shallow bottom, and can fit the application body 17 without any gap. The application body storage portion 23 is open at a portion facing the guide rail 2, so that the application body 17 can contact the guide rail 2 when the application body 17 is stored.
As shown in FIG. 8, the partition portion 19 that partitions the wall portion of the applied body storage portion 23, that is, the applied body storage portion 23 and the holding body storage portion 22 provided in the lubricant container 18 is provided on the back side of the lubricant container 18. It is U-shaped when viewed from the top. Furthermore, the partition part 19 is extended to the lower end of the leg part of the both sides of the application body storage part 23, and is extended to the inner surface, The L-shaped wall part 28 is formed.

As shown in FIG. 8A, the partition portion 19 of the lubricant container 18 has a position facing both side surfaces of the guide rail 2, specifically, a position facing the middle position between the two rolling grooves 2a on each side surface. A circular communication hole 21 is formed. The communication hole 21 communicates the holding body storage portion 22 and the application body storage portion 23 in order to guide the lubricant stored in the holding body 16 to the application body 17. As shown in FIG. 8B, the communication hole 21 has a small diameter portion 21a provided on the application body storage portion 23 side and a large diameter having a large diameter and concentric with the small diameter portion 21a provided on the holding body storage portion 22 side. Part 21b. The shape of the communication hole 21 is not limited to a circle and may be a square or the like.

9 is attached to the lubricant container 18 from the back side. The lid 33 is a substantially U-shaped plate-like member made of the same resin as the lubricant container 18. The lid 33 is formed with a groove 31 that fits with the partition portion 19 and the outer wall 29 of the lubricant container 18. See also FIG. The lid 33 is formed with a circular through hole 32 at a position facing the through hole 27 of the lubricant container 18.

Hereinafter, the procedure of assembling the oil supply device 7 according to this embodiment and attaching it to the slider body 4 will be described with reference to FIGS. 5 and 11.

Procedure 1: As shown in FIG. 5A, the application body 17 is stored in the application body storage section 23 of the lubricant container 18. At this time, the cutout portion 17b of the application body 17 and the L-shaped wall portion 28 of the lubricant container 18 are fitted. Accordingly, the L-shaped wall portion 28 can support the application body 17 while positioning the application body 17 in the short direction of the slider body 4.

Procedure 2: As shown in FIG. 5A, the holding body 16 is stored in the holding body storage portion 22 of the lubricant container 18. At this time, as shown in FIG. 5B, the cylindrical protrusion 16 a of the holding body 16 is fitted into the large diameter portion 21 b of the communication hole 21 provided in the partition portion 19 of the lubricant container 18. As a result, the communication hole 21 can support the holding body 16 while positioning it.

Step 3: The groove portion 31 of the lid 33 is fitted to the partition portion 19 and the outer wall 29 of the lubricant container 18, and more specifically, by frictional connection, the lid 33 is attached to the lubricant container 18 as shown in FIG. 10. Install. As a result, the holding body storage unit 22 is sealed and the application body 17 is sandwiched and fixed between the bottom surface of the application body storage unit 23 and the lid 33. From the above, the assembly of the fueling device 7 is completed. The lid 33 may be attached to the lubricant container 18 using an adhesive as necessary.

Procedure 4: As shown in FIG. 11A, the end caps 5 are arranged at both ends in the longitudinal direction of the slider body 4 so that the surfaces on which the direction changing paths 5a are formed, that is, the front faces. Then, the screw 24 is fixed to the screw hole 11 of the slider body 4 through the through hole 13 of the end cap 5. The through hole 13 and the screw hole 11 are not shown in FIG. Thereby, the attachment of the end cap 5 to the slider body 4 is completed.

Procedure 5: As shown in FIG. 11B, the oil supply device 7 is arranged from the outside in the longitudinal direction of the slider body 4 so that the lubricant container 18 of the oil supply device 7 is adjacent to each end cap 5.

Procedure 6: As shown to FIG. 11C, the side seal 8 is arrange | positioned from the longitudinal direction outer side of the slider main body 4 with respect to each oil supply apparatus 7. FIG. Then, the screw 26 is passed through the through hole 9 of the side seal 8, the through hole 32 of the lid 33 of the lubricant container 18, the through hole 27 of the lubricant container 18, and the through hole 14 of the end cap 5 in order. Fix to the screw hole 12. The through holes 32 and 27 and the screw hole 12 are not shown in FIG. Thereby, the attachment of the oil supply device 7 and the side seal 8 to the slider body 4 is completed.

By the above procedure, assembly of the fueling device 7 and attachment to the slider body 4 can be easily performed.

In the linear guide device 1 of the present embodiment including the fuel supply device 7 having the above-described configuration, the lubricant stored in the holding body 16 in the holding body storage portion 22 is provided in the partition portion 19 of the lubricant container 18. It is guided from the communication hole 21 to the application body storage unit 23 and supplied to the application body 17 in the application body storage unit 23. Thereby, when the slider 3 moves linearly on the guide rail 2, the applying body 17 can contact the both side surfaces and the upper surface of the guide rail 2 to apply the lubricant, thereby achieving lubrication.

As described above, the holding body 16 is made of a low-density porous molded body as compared with the application body 17, that is, the storage amount of the lubricant per unit volume is large and the volume is also large. Can be stored. Further, since the application body 17 is a thin plate-like member as compared with the holding body 16 and the contact area with the guide rail 2 is small, an appropriate amount of lubricant is applied while preventing the lubricant from flowing out to the guide rail 2. It can be applied to the guide rail 2. Therefore, a large amount of lubricant can be prevented from being consumed in a short period of time, and refueling can be performed stably for a long period of time.

Further, in the lubricant container 18, the holding body 16 and the application body 17 are arranged side by side in the direction perpendicular to the longitudinal direction of the slider 3, that is, the short side direction, and the communication hole 21 of the partition part 19 between them is It penetrates in the lateral direction, specifically in the left-right direction in FIG. 5A. For this reason, the lubricant in the holding body storage part 22 diffuses in the application body 17 toward the inner side in the left-right direction in FIG. Therefore, compared with the conventional oil supply apparatus as described above, the lubricant can reach the portion of the application body 17 that contacts the guide rail 2 better. As a result, the lubricant can be sufficiently applied to the guide rail 2. In particular, in this embodiment, since the communication hole 21 of the partition part 19 is formed toward the intermediate position between the two rolling grooves 2a on the side surface of the guide rail 2, the lubricant is applied to the guide rail 2 in the application body 17. It diffuses toward each rolling groove 2a. Thereby, a lubricant can be reliably applied to each rolling groove 2 a of the guide rail 2.

Further, the lubricant in the holding body storage portion 22 can be smoothly and stably guided to the application body storage portion 23 by providing the small diameter portion 21 a in the communication hole 21. Specifically, in the communication hole 21, the lubricant acts between the small diameter portion 21 a of the communication hole 21 and the lubricant molecule rather than capillary action, that is, intermolecular force (cohesive force) acting on the lubricant molecule. Since (adhesive force, easiness to wet) is larger, it can be smoothly and stably guided to the application body storage portion 23 by being drawn into the wall surface of the small diameter portion 21a and entering the small diameter portion 21a.

In this embodiment, as shown in FIG. 5B, the application body 17 and the holding body 16 are not in contact with each other in the communication hole 21 of the lubricant container 18. However, the present invention is not limited to this, and as shown in FIG. 5C, a cylindrical small protrusion 16 b that can be fitted to the small diameter portion 21 a of the communication hole 21 is further provided at the tip of the cylindrical protrusion 16 a of the holding body 16. It is good also as a structure which 16b contacts the application body 17. FIG. As a result, the lubricant in the holder storage unit 22 can be guided more smoothly and stably to the application body storage unit 23. Further, the cylindrical protrusion 16a of the holding body 16 is designed to be larger than the large diameter portion 21b of the communication hole 21, and when the protrusion 16a is inserted into the communication hole 21, the protrusion 16a is deformed and filled into the small diameter portion 21a. Thus, the same effect can be achieved by the configuration in contact with the application body 17.

In the lubricant container 18, the supply amount of the lubricant from the holding body storage portion 22 to the application body storage portion 23 changes the size of the small diameter portion 21 a of the communication hole 21, and the application body 17 has a different density. It can be changed by using a molded body, changing the lubricant, or performing at least two of these simultaneously. Here, “changing the lubricant” means using a lubricant having a different viscosity when a lubricant is used as a lubricant, and using a grease having a different consistency when a grease is used as a lubricant. Means.

In addition, the oil supply device 7 according to the present embodiment is composed of four parts with the simple configuration of the holding body 16, the application body 17, the lubricant container 18, and the lid 33, so that the number of parts is small and the cost is low. It also has features.

As described above, in the oil supply device 7 according to the present embodiment, the communication hole 21 of the partition portion 19 of the lubricant container 18 faces the intermediate position between the two rolling grooves 2 a on each side surface of the guide rail 2. One is provided at each position. However, the number and positions of the communication holes 21 are not limited to this. Specifically, in the partition portion 19 of the lubricant container 18, the positions facing the upper surface of the guide rail 2 and the rolling grooves on both side surfaces of the guide rail 2. It is good also as a structure provided in the position which opposes 2a, respectively. This also applies to the second embodiment described later.

(Second Embodiment)
About the linear guide apparatus 34 provided with the oil supply apparatus 35 which concerns on 2nd Embodiment shown in FIG. 12, about the same structure as the said 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted, and a different structure is demonstrated in detail. To do.
As shown in FIG. 13, the oil filler 35 according to the present embodiment is further provided with a pressing member 37 described later in the holder housing portion 22 of the lubricant container 18 in the oil filler 7 according to the first embodiment. .

In the oil supply device 35 according to the present embodiment, the partition portion 19 of the lubricant container 18 includes a rectangular cutout portion 36 instead of the communication hole 21 of the first embodiment. As shown in FIG. 14A, the notch 36 extends in the vertical direction of the partition part 19, that is, in the vertical direction of FIG. 14A, and is provided so that the upper end of the partition part 19 is opened. The cutout portion 36 includes a small width portion 36a provided on the application body storage portion 23 side, and a large width portion 36b provided on the holding body storage portion 22 side, concentric with the small width portion 36a and having a large width. The notch 36 is attached to the lubricant container 18 by covering the lubricant container 18 with the lid 33 except for the lower end portion of the notch 36 as shown by the dotted line in FIG. 14A. It plays the same role as 21. Note that the protrusion 16 a of the holding body 16 in the present embodiment is designed in a quadrangular prism shape in accordance with the shape of the notch 36.

As shown in FIG. 13A, the pressing member 37 is a metal rod-shaped member having a circular cross section. The holding member 22 of the lubricant container 18, as shown in FIG. It bends in a U shape so that it may extend to the other notch part 36 along. Both ends of the pressing member 37 are bent inward so as to enter the notch 36. Specifically, the diameter of the cross section of the pressing member 37 is designed to be larger than the narrow portion 36a of the notch 36 and smaller than the large portion 36b. The cross section of the pressing member 37 is not limited to a circle, and may be a square or the like.
As a specific material of the pressing member 37, for example, a hard steel wire, a piano wire, an oil temper wire, a stainless steel wire, a spring steel material, or the like is preferably used.

Hereinafter, a procedure for assembling the oil supply device 35 according to the present embodiment and attaching it to the slider body 4 will be described.

Procedure 1: Same as Procedure 1 in the first embodiment.

Procedure 2: As shown in FIG. 13A, the holding body 16 is stored in the holding body storage portion 22 of the lubricant container 18. At this time, the quadrangular columnar protrusion 16 a of the holding body 16 is fitted into the large portion 36 b of the notch 36 provided in the partition portion 19 of the lubricant container 18. Thereby, the notch 36 can support the holder 16 while positioning it. Then, as shown in FIG. 13A, the pressing member 37 is placed on the holding body 16, and both ends of the pressing member 37 are inserted into the cutout portions 36. At this time, as shown in FIG. 13B, the protrusion 16a of the holding body 16 and the vicinity thereof are pushed into the notch 36 while being deformed at each tip of the pressing member 37. As a result, the protrusion 16a of the holding body 16 pushed into the cutout portion 36 protrudes from the small-width portion 36a of the cutout portion 36 into the application body storage portion 23 to deform the application body 17 as shown in FIG. 13B. At the same time, it contacts the application body 17. This state is maintained by the urging force of the pressing member 37 inward in the left-right direction in FIG. 13A.

Procedure 3: As in the procedure 3 of the first embodiment, the lid 33 is attached to the lubricant container 18 as shown in FIG. At this time, since the holding body 16 is filled in the holding body storage part 22 without a gap, the pressing member 37 is pushed toward the bottom surface of the holding body storage part 22 by the lid 33. Thereby, a force in the same direction is applied to the holding body 16 by the pressed pressing member 37, and the holding body 16 is deformed and the lubricant oozes out from the holding body. Then, since the lubricant that has oozed out travels along the pressing member 37 and gathers in the vicinity of the tip thereof, the lubricant in the holding body storage portion 22 can be efficiently guided to the cutout portion 36. From the above, the assembly of the fueling device 35 is completed.

Procedures 4 to 6: The same as procedures 4 to 6 in the first embodiment.

By the above procedure, the oil supply device 35 can be easily assembled and attached to the slider body 4.

The linear guide device 34 of this embodiment provided with the fuel supply device 35 having the above-described configuration can achieve the same effects as those of the first embodiment. In particular, in the present embodiment, as described in the procedure 3 above, the lubricant in the holding body storage portion 22 can be efficiently guided to the cutout portion 36, so that the lubricant can be smoothly supplied to the application body storage portion 23. Can be supplied stably.

Further, as described in the procedure 2, since the holding body 16 and the application body 17 are in contact with each other, the lubricant can be supplied to the application body storage unit 23 more smoothly and stably.

When a sufficient amount of lubricant is held in the holding body 16, the pressing member 37 is pushed outward (outward in FIG. 13A) as viewed from the guide rail 2 as indicated by the dotted line in FIG. 13C. It is in an unfolded state. For this reason, when the amount of the lubricant held by the holding body 16 decreases, the pressing member 37 returns to its original shape as shown by the solid line in FIG. 13C. As a result, the lubricant in the holding body 16 is guided to the notch 36, and the supply of the lubricant from the holding body 16 to the application body 17 by capillary action can be assisted. Therefore, the amount of the lubricant in the application body 17 can be kept constant for a longer period of time, and oiling can be performed stably for a longer period of time.

Note that, as described above, in the fueling device 34 according to the present embodiment, the cutout portion 36 of the partition portion 19 of the lubricant container 18 includes the narrow portion 36a and the large portion 36b. However, the form of the notch 36 is not limited to this, and for example, as shown in FIG. 15, the notch 36 may be constituted by only the large part 36b, and the shape of the protrusion 16a of the holding body 16 may be matched with this. .

As described above, the oil supply device 7 according to the first embodiment has the communication hole 21 in the lubricant container 18, and the oil supply device 35 according to the second embodiment has the notch 36 in the lubricant container 18. ing. However, the present invention is not limited to this, and the lubricant container 18 of the first embodiment may have a notch 36 or the lubricant container 18 of the first embodiment may have a communication hole 21.

Further, the

oil supply devices

7 and 35 according to each of the above embodiments are provided at both ends of the slider main body 4, but the present invention is not limited thereto, and may be provided only at one end of the slider main body 4.

In each of the above embodiments, the

linear guide devices

1 and 34 having balls as rolling elements are shown, but the present invention is not limited to this, and a linear guide device having rollers as rolling elements can also be configured.

In each of the above embodiments, the present invention is applied to a linear guide device. However, the present invention is not limited to this and can be applied to other motion guide devices such as a curved motion guide device.

The holding body 16 and the application body 17 in the

oil supply apparatuses

7 and 35 according to the above embodiments are formed of a porous molded body. Examples of the porous molded body include felt, resin, and thermoplastic elastomer.
Felt materials include poly α-olefin fibers such as polypropylene, polyethylene, polyethylene terephthalate, polybutylene and polymethylpentene, aramid fibers such as polyamide, and fluorine fibers such as PTFE.
Examples of the resin material include poly α-olefin resins such as polypropylene, polyethylene, polyethylene terephthalate, polybutylene, and polymethylpentene, EVA resin, and EVOH resin.
Examples of the thermoplastic elastomer include polyaramid elastomers such as polyamide, and elastomers such as polyethylene and polypropylene.
Lubricants include lubricating oil and grease. The lubricating oil to be used is not particularly limited, and any of a mineral oil system, a synthetic oil system, and a natural oil system may be used. Specific examples include mineral oil, poly α-olefin oil, alkyl polyphenyl ether oil, ester oil, diester oil, and alkyl naphthalene oil. Moreover, you may use the lubricating oil containing additives, such as antioxidant, a rust preventive agent, and a metal deactivator. As the grease, lithium-based, diurea-based, or urea-based grease (consistency 130 to 295) may be used.
The ratio of the porous molded body constituting the holding body 16 and the coated body 17 to the lubricant is preferably 10 to 80% by mass: 90 to 20% by mass. When the ratio of the porous molded body is less than 10% by mass, the hardness and strength of the holding body 16 and the coated body 17 are insufficient. On the other hand, if the proportion of the porous molded body exceeds 80% by mass, the content of the lubricant is reduced, and the supply of the lubricant becomes insufficient.
The combination of the material of the holding body 16 and the application body 17 and the lubricant is not limited to the above.

DESCRIPTION OF

SYMBOLS

1,34 Linear guide apparatus 2 Guide rail 3 Slider 4 Slider main body 5

End cap

7, 35 Oil supply apparatus 8 Side seal 16 Holding body 17 Application body 18 Lubricant container 19 Partition part 21 Communication hole 22 Holding body storage part 23 Application body storage Part 33 lid 36 notch part 37 pressing member

Claims

A holding body for holding a lubricant;
An application body for applying a lubricant to the guide rail;
Containing the application body and the holding body, and having a container disposed at an end of the slider in the longitudinal direction;
The container is provided with a holding body storage section for storing the holding body and an application body storage section for storing the application body arranged in a short direction of the guide rail, and the application body storage section and the holding body. An opening for guiding the lubricant from the holder storage part to the application body storage part is formed in the partition part that partitions the storage part,
The opening comprises a small opening located on the application body storage portion side and a large opening located on the holding body storage portion side and larger than the small opening,
The oil retaining device for a rolling bearing guide device, wherein the holding body includes a protrusion that can be fitted into the large opening.
The application body is composed of a porous molded body,
2. The oil supply device for a rolling bearing guide device according to claim 1, wherein the holding body is made of a porous molded body in which the amount per unit volume capable of holding the lubricant is larger than that of the application body.
The oil supply device for a rolling bearing guide device according to claim 1, wherein the holding body storage portion has a deeper bottom and a larger volume than the application body storage portion.
The application body storage section is open at a portion facing the guide rail, and is provided with a support section for supporting the application body while positioning the application body in the short direction of the guide rail. The oil supply device for a rolling bearing guide device according to claim 1.
The oil supply device for a rolling bearing guide device according to claim 1, wherein the opening portion of the partition portion extends toward the vicinity of a rolling groove provided in the guide rail.
2. The oil supply device for a rolling bearing guide device according to claim 1, wherein the opening portion of the partition portion is formed at two locations so as to face both side surfaces of the guide rail.
A rod-shaped pressing member extending from one opening of the partition part to the other opening along the partition part in the holding body storage part;
The oil supply device for a rolling bearing guide device according to claim 6, wherein the holding member stored in the holding member storage portion is pressed by the pressing member.
2. The oil supply device for a rolling bearing guide device according to claim 1, wherein the applying body and the holding body are in contact with each other in or near the opening of the partition portion.
A rolling bearing guide device comprising the oil supply device for a rolling bearing guide device according to any one of claims 1 to 8.