JP4816570B2 - End cap for linear motion guide device and linear motion guide device - Google Patents

Description

  The present invention relates to a linear motion guide device that is used in various machines such as a manufacturing apparatus and a processing machine and in which a slider can move relatively along a guide rail via a plurality of rolling elements, and in particular, this type of linear motion. The present invention relates to an end cap that can be suitably used for a guide device.

This type of linear motion guide device includes, for example, a guide rail 1 having a plurality of rolling element rolling grooves 4 on the left and right side portions of the outer surface thereof, as in the linear motion guide device 100 illustrated in FIG. And a slider 102 having a rolling element rolling groove 6 on the inner surface facing the rolling element rolling groove 4 of the guide rail 1.
As shown in the figure, the slider 102 has a slider body 5 and a pair of end caps 107 attached to both end surface portions thereof. Inside each end cap 107, a substantially U-shaped direction change path (not shown in the figure) is formed, and each direction change path has a rolling element return path 11 of the slider body 5, and A plurality of annular endless circulation paths are formed by connecting the ends of the rolling element rolling paths 8 composed of both rolling elements rolling grooves 4 and 6 of the guide rail 1 and the slider body 5. The plurality of infinite circulation paths are loosely fitted in the direction change path of the end cap 107 and the rolling element return path 11 of the slider body 5 and are inserted into the rolling element rolling path 8. Each of the moving bodies 3 is filled.

  As a result, in this type of linear motion guide device, a plurality of filled rolling elements 3 roll in each infinite circulation path with the relative movement of the slider 102 with respect to the guide rail 1, and within one end cap 107. After the direction change in the direction change path, it is introduced into the rolling element return passage 11 and returns to the rolling element rolling path 8 from the opposite direction change path again, while circulating through the plurality of rolling elements 3. The slider 102 moves smoothly along the longitudinal direction of the guide rail 1.

  Further, in this type of linear motion guide device, in order to make the relative movement between the guide rail and the slider smoother, the lubricant is supplied to the end cap from the internal direction change path into each infinite circulation path. For this purpose, a lubricant supply path is formed. For example, in the techniques described in Patent Documents 1 and 2, as shown in FIG. 8, a lubricant supply port 126 is provided at the center in the width direction of the end cap 107, and a nipple 126 n is attached to the lubricant supply port 126. It has been. A lubricant supply path 121 communicating with the lubricant supply port 126 is formed on the surface of the end cap 107 facing the side surface of the slider body 5.

Here, in the techniques described in Patent Documents 1 and 2, in order to supply the lubricant equally from the center position in the width direction of the end cap 107 to the left and right sleeve portions, the lubricant supply path has a symmetrical configuration. Yes, the lubricant is supplied from the nipple 126n to the left and right direction change paths via the lubricant supply path 121, and the lubricant can be distributed and supplied almost equally to each direction change path. The lubricant supplied from each direction change path into each infinite circulation path makes the relative movement between the guide rail and the slider smoother and makes it possible to maintain stable performance over a long period of time. .
Japanese Utility Model Publication No. 4-3126 (FIG. 4) Japanese Utility Model Publication No. 6-39144 (FIG. 4)

  By the way, when this type of linear motion guide device is used, for example, as a guide for an XY table device and is used in a configuration in which a lubricant is supplied from the outside, the lubricant is in balance with the member configuration around the device. In some cases, the supply pipe cannot be connected to the center position in the width direction of the slider of the linear motion guide device. In such a case, for example, as illustrated in FIG. 9, the lubricant supply port 126 is provided at a position separated from the center in the width direction, such as the side surface 107 t of the end cap 107, and the lubricant is supplied to the lubricant supply port 126. It will be necessary to connect the piping for use. Therefore, as shown in the figure, when supplying the lubricant J from the side surface 107t of the end cap 107, from the lubricant supply port 126 to the communication port 121k where the lubricant is supplied to the direction change path 12, The length of the lubricant supply path 121 that passes through is different on the left and right.

  However, in the techniques described in Patent Documents 1 and 2 described above, the lubricant supply path is symmetrical, and as illustrated in FIG. 9, the width of the lubricant supply path formed in the body portion 107d of the end cap. The thickness of the mutual pipe line between the portion 121w extending in the direction and the portion 121b extending in the vertical direction of the sleeve portions 107s on the left and right sides in the width direction is set to be almost the same. Therefore, as shown in the figure, even if it is attempted to supply the lubricant J to each direction change path 12 through the lubricant supply path 121 from the lubricant supply port 126 provided at a position separated from the center CL in the width direction, A difference occurs in the pressure resistance of the lubricant J that is pressure-fed to the pressure.

  That is, the pressure resistance of the lubricant J flowing on the α side (left side in the figure) far from the lubricant supply port 126 is formed in the portion 121w extending in the width direction of the lubricant supply path 121 and the other left sleeve portion. This is the sum of the resistance in the vertically extending portion 121b. Accordingly, the pressure resistance of the lubricant supply path 121 on the α side increases as it goes deeper in the supply path. On the other hand, the pressure resistance of the lubricant J flowing on the β side (right side in the figure) close to the lubricant supply port 126 hardly passes through the portion 121 w extending in the width direction of the lubricant supply path 121. Therefore, there is almost only a pressure-feeding resistance in the portion 121b formed in the right sleeve portion extending in the vertical direction. Accordingly, the amount of the lubricant J flowing on the β side close to the lubricant supply port 126 increases, and as a result, the lubricant J hardly flows on the α side far from the lubricant supply port, and the lubricant J toward the α side becomes difficult. This reduces the amount of supply.

  As described above, the resistance when the lubricant is pumped is greatly influenced by the length of the lubricant supply path through which the lubricant passes. For this reason, when the lubricant supply path is asymmetrical with respect to the lubricant supply port, there is a difference in the amount of lubricant supplied to the left and right, and the lubricant cannot be evenly supplied to the left and right infinite circulation paths. There is a risk that the lubricant supplied from the direction change path with a small amount of the lubricant into the infinite circulation path will be insufficient in an early stage. As a result, either one of the left and right endless circulation paths causes a lack of lubricant. If the lubricant is insufficient, the smooth operation of the linear motion guide device is impaired.

  Therefore, the present invention has been made paying attention to such problems, and according to fluctuation conditions such as the difference in the position of the lubricant supply port, the lubricant is evenly supplied to the left and right infinite circulation paths. An object of the present invention is to provide an end cap for a linear motion guide device and a linear motion guide device.

In order to solve the above-mentioned problems, a first invention of the present invention is a guide rail having rolling element rolling grooves on both left and right side surfaces, and rolling element rolling facing the rolling element rolling grooves of the guide rail. A slider main body having a moving groove on the inner side surface of the pair of left and right sleeve portions and having a rolling element return passage penetrating in the axial direction of the pair of sleeve portions and straddling the guide rail, The slider body is used in a linear motion guide device that moves relatively along the guide rail via a plurality of rolling elements, and is attached to both front and rear ends of the slider body, corresponding to each of the pair of sleeve portions. A plurality of direction change paths that are provided to communicate the rolling element rolling path formed of both rolling elements rolling grooves of the guide rail and the slider body and the rolling element return passage so as to circulate the plurality of rolling elements; Double An end cap having a lubricant supply path having a communication port for supplying a lubricant to the direction change path, and a lubricant supply port for supplying the lubricant to the lubricant supply path from the outside. , wherein the lubricant supply passage, the position between said lubricant supply port and the communication port, and the diaphragm member to provide a pumping resistance is mounted by narrowing the width of the lubricant supply passage, the restrictor member Is characterized in that the mounting position of the throttle member in the lubricant supply path can be changed .

  According to the end cap for a linear motion guiding device according to the first aspect of the present invention, the lubricant supply path formed in the end cap is formed at a position between the lubricant supply port and the communication port, so that the thickness of the lubricant supply path is large. A throttle member that narrows the width and gives pressure resistance is installed, so that the throttle member supplies the lubricant supply passages on the left and right sleeves according to the fluctuation conditions such as the difference in the position of the lubricant supply port. It is possible to configure the lubricants to be supplied uniformly.

Further, in the end cap for the linear motion guide device according to the first aspect of the present invention, the throttle member can change the mounting position of the throttle member in the lubricant supply path. Lubricant is evenly supplied to each direction change path provided in each of the pair of sleeves according to the mounting orientation of the apparatus, the position of the lubricant supply port, or the changing conditions of the lubricant used. This is suitable for the configuration.

Here, in the end cap for the linear motion guide device according to the first invention, the throttle member has a plurality of thicknesses of the throttle portions, and each direction changing path provided in each of the pair of sleeve portions. It is preferable that the thickness of the throttle portion is selected so that the lubricant is evenly supplied. With such a configuration, for example, depending on the mounting posture of the linear motion guide device, the position of the lubricant supply port, or the changing conditions of the lubricant used, etc., the lubricant supply paths of the left and right sleeve portions It is suitable for configuring the supplied lubricant to be supplied equally.

  The second invention of the present invention is a guide rail having rolling element rolling grooves on both side surfaces, and a rolling element rolling groove facing the rolling element rolling grooves of the guide rail on the inner side surface of the sleeve portion. And a sleeve body that has a rolling element return passage penetrating in the axial direction of the sleeve body and straddling the guide rail, and is attached to both ends of the slider body so that the guide rail and the slider body A pair of end caps having a direction changing path for communicating a rolling element rolling path composed of both rolling element rolling grooves and the rolling element return path, and the end cap interposed between the rolling element rolling path and the end cap And a plurality of rolling elements loosely fitted in the rolling element return passages of the slider body, wherein the pair of end caps is the end guide for the linear motion guiding apparatus according to the first invention. -Up is characterized in that it is installed.

  According to the linear motion guide device according to the second aspect of the invention, the linear motion guide device end cap according to the first aspect of the invention is mounted, so that the linear motion guide device is used as a guide for an XY table device, for example. When using in a configuration in which the lubricant is supplied from the outside, a piping for supplying the lubricant is provided at the center in the width direction of the slider of the linear motion guide device in consideration of the configuration of the members around the device. Even when the connection cannot be made, the lubricant can be evenly supplied to the left and right infinite circulation paths according to the changing conditions such as the difference in the position of the lubricant supply port.

  As described above, according to the present invention, the end cap for the linear motion guide device that can supply the lubricant equally to the left and right infinite circulation paths according to the changing conditions such as the difference in the position of the lubricant supply port, and A linear motion guide device can be provided.

  Hereinafter, a linear guide which is an embodiment of a linear motion guide device according to the present invention will be described with reference to the drawings as appropriate. FIG. 1 is a plan view of the linear guide. FIG. 1 is a partially broken view. FIG. 2 is an explanatory view of an embodiment of the end cap for a linear motion guide device according to the present invention, which shows a cross-sectional view taken along the line XX in FIG. In addition, about the structure similar to the conventional linear motion guide apparatus shown in FIG. 7 mentioned above, the same code | symbol is attached | subjected and demonstrated.

  As shown in FIG. 1, the linear guide 10 includes a guide rail 1 formed in a linear shape and a slider 2 having a substantially U-shaped cross-sectional shape straddling the guide rail 1. . The guide rail 1 is formed with two rolling element rolling grooves 4 as tracks on the left and right side portions, for a total of four. On the other hand, the slider 2 has rolling element rolling grooves 6 on the inner surface thereof as four tracks facing the rolling element rolling grooves 4 of the guide rail 1. A plurality of ball rolling elements 3 are interposed in the rolling element rolling path 8 formed by the rolling rail rolling grooves 4 and 6 between the guide rail 1 and the slider 2.

Further, as shown in FIG. 1, the slider 2 includes a slider body 5 and a pair of end caps 7 attached to both end surface portions 5 a of the slider body 5. The slider body 5 is made of metal, and a rolling element return passage 11 that penetrates in the axial direction of the slider body 5 is formed in parallel with the rolling element rolling groove 6.
On the other hand, the pair of end caps 7 is made of a synthetic resin, and is formed in a substantially U-shape that is substantially similar to the outer shape of the slider body 5 and has substantially the same dimensions (see FIG. 2). Each end cap 7 is attached to both end faces of the slider 2 with two fixing screws 28. Inside each end cap 7, a substantially U-shaped direction change path 12 is formed at each of the left and right sleeve portions 7s. Each direction change path 12 connects the ends of the rolling element return path 11 and the rolling element rolling path 8 to each other. The rolling element rolling path 8, the rolling element return path 11, and the direction changing paths 12 on both sides are circular. Four annular endless circuits are constructed. Then, for each infinite circulation path, the rolling element rolling path 8 is interposed, and a plurality of rolling elements 3 are loaded by loosely fitting in the direction changing path 12 and the rolling element return path 11.

  As a result, the rolling element 3 that has rolled on the rolling element rolling path 8 in accordance with the relative movement of the slider 2 is changed in direction by the direction changing path 12 in one end cap 7 and then introduced into the rolling element return path 11. Thus, the slider 2 can be relatively moved along the longitudinal direction of the guide rail 1 through the plurality of rolling elements 3 while circulating from the opposite direction change path 12 to the rolling element rolling path 8 again. It has become. As shown in FIG. 1, side seals 9 are attached to the linear guide 10 on the outer side surfaces of the end caps 7 that are end surfaces in the relative movement direction of the slider 2. The side seal 9 is formed in a shape that is substantially similar to the outer shape of the end cap 7 except for the lip portion (not shown) and has the same dimensions. The lip portion allows foreign matters such as dust to pass between the guide rail 1 and the end cap 7. Intrusion into the inside of the slider 2 is prevented.

Here, as shown in FIG. 2, each end cap 7 has a communication port 22 for supplying the lubricant to each direction changing path 12 at a joint surface 7 m facing the end surface of the slider body 5. A path 21 is provided.
Hereinafter, the end cap 7 and the lubricant supply path 21 will be described in detail with reference to FIGS. FIG. 3 is a perspective view of a throttle member that provides pressure resistance by reducing the thickness of the lubricant supply passage, and FIG. 4 is a mounting portion of the throttle member that is detachably attached to the lubricant supply passage. FIG. 2A shows a part of FIG. 2, and FIG. 2B shows a cross-sectional view taken along the line A-A in FIGS. 2 to 4A. ing.

  As shown in FIG. 2, the end cap 7 has a substantially U-shape so that a body portion 7d located at the center in the width direction and a pair of sleeve portions 7s formed on both sides of the body portion 7d It is formed. A lubricant supply port 26 for introducing a lubricant from the outside to the body portion 7d of the end cap 7 at a position spaced apart from the center CL in the width direction of the body portion 7d (the right end surface 7t in the example of the figure). Is provided. The lubricant supply port 26 has a small-diameter communication hole 26 a penetrating in the axial direction, and the communication hole 26 a communicates with the lubricant supply path 21. A nipple 26n is attached to the female screw of the right lubricant supply port 26 having the communication hole 26a, and a supply pipe (not shown) is detachably connected to the nipple 26n. Note that the left end face of the figure is also provided with a pilot hole for the lubricant supply port 26 that can be used as a lubricant supply port by forming tapping and a communication hole by additional machining.

  In addition, although the lubricant supply port 26 is provided so as to communicate with the lubricant supply path 21 at the center position in the width direction of the body portion 7d, it is blocked by the plug 26b in the example of the present embodiment. Further, in the example of the present embodiment, the other end cap 7 is not used for supplying the lubricant, so that the lubricant supply ports on both sides are not communicated with the lubricant supply path 21 and the center is about the center. Are plugged.

  Here, the lubricant supply path 21 includes a main flow line 23 and a tributary line 24. Specifically, the main flow line 23 is a part of the lubricant supply path 21 formed along the width direction of the body portion 7d, and the main flow line 23 is connected to the lubricant supply port 26 on the side where the nipple 26n is attached. One end portion in the width direction of the supply path 21 (the right side in the figure) communicates. Further, the branch flow channel 24 is a portion of the lubricant supply channel 21 that is formed in the vertical direction along the sleeve portion 7s in each of the pair of left and right sleeve portions 7s.

  The left and right tributary pipelines 24 communicate with the upper ends of the tributary pipelines 24 and the left and right end portions of the main flow pipeline 23. Further, the communication port 22 is provided at a position corresponding to each direction change path 12 in the middle of the left and right branch flow lines 24, and the main flow line 23 and the direction change path 12 via the branch line 24. Are configured to communicate with each other. In the example of the present embodiment, the left and right tributary pipes 24 have two communication ports 22 that are formed to face each other for each of the two right and left direction change paths 12 corresponding to the two left and right endless circulation paths. ing. Thus, the lubricant is introduced from the lubricant supply port 26 into the main flow line 23 of the lubricant supply path 21 by the pressure-feeding of the lubricant from the outside to the nipple 26n, and further the lubricant introduced into the main flow line 23. Are fed to the left and right branch pipes 24 and supplied to the direction change paths 12 from the respective communication ports 22 of the branch pipes 24.

Here, in this lubricant supply path 21, a throttle member 27 that reduces the thickness of the lubricant supply path 21 and provides pressure resistance at a position between the lubricant supply port 26 and the communication port 22 is detachable. It is installed.
Specifically, the throttle member 27 in the present embodiment connects the communication hole 26 a serving as the outlet of the lubricant supply port 26 and the main flow pipe 23 and is fitted into a portion branched to the right branch pipe 24. ing.

As shown in the perspective view of FIG. 3, the aperture member 27 is a block member having a rectangular parallelepiped prismatic top. The throttle member 27 has a square cross section in the longitudinal direction, and a first flow path 31 having a circular cross section is provided therethrough along the longitudinal direction.
Then, with respect to one end side (upper side in the figure) 27b of the first flow path 31, the two surfaces 27c and 27d perpendicular to the longitudinal direction of the throttle member 27 are The second flow path 32 and the third flow path 33 having a circular cross section are provided in communication with the first flow path 31, respectively.

  The first flow path 31, the second flow path 32, and the third flow path 33 are each a throttle portion, and the thickness of each throttle portion is provided in each of the pair of left and right sleeve portions 7s. The thickness of each throttle part is set so that the lubricant J is uniformly supplied to each of the direction change paths 12 formed. The throttle member 27 is prepared in advance with a plurality of throttle members in a state before being attached to the lubricant supply path 21. In the plurality of throttle members, a plurality of types of respective throttle portions (first flow path 31, second flow path 32, and third flow path 33) are set. Then, the mounting posture of the linear guide to be mounted, the position of the lubricant supply port 26, or the position of the lubricant supply port 26 so that the lubricant J is evenly supplied to the direction change paths 12 provided in the pair of sleeve portions 7s, respectively. The thickness of the throttle portion is selected according to the changing conditions of the lubricant used.

  Then, as shown in FIG. 4, a diaphragm member 27 in which the most suitable diaphragm thickness is set in accordance with these fluctuation conditions is mounted. That is, in the example of the throttle member 27 of the present embodiment, the other end of the first flow path 31 communicates with the communication hole 26a toward the communication hole 26a, and the second flow The lubricant supply passage 21 is detachably fitted and attached so that the passage 32 communicates with the right branch passage 24 and the third passage 33 communicates with the main flow passage 23.

Next, the operation and effect of the lubricant supply path 21 will be described.
As described above, according to the linear guide 10, the end cap 7 is provided with the lubricant supply path 21, and the lubricant supply path 21 has the communication ports 22 formed in communication with the direction change paths 12. Since the lubricant J is supplied toward each infinite circulation path, the relative movement between the guide rail 1 and the slider 2 can be made smoother by supplying the lubricant appropriately, and for a long time. The stable performance of the linear guide 10 can be maintained.

  According to the linear guide 10, the lubricant supply path 21 formed in the end cap 7 has a thickness of the lubricant supply path 21 at a position between the lubricant supply port 26 and the communication port 22. The throttle member 27 that narrows the width of the sleeve 7 and detachably attaches it to the pressure-feeding resistance is detachably mounted. J can be configured to be supplied equally to the left and right tributary conduits 24. That is, the amount of the lubricant J flowing on both the left and right sides of the α side (left side in FIG. 2) far from the lubricant supply port 26 and the β side (right side in FIG. 2) close to the lubricant supply port 26 is made substantially the same. The lubricant J can be supplied almost evenly on both the left and right sides. Although the distance becomes longer to the α side, the lubricant J, which is throttled by the third flow path 33 and becomes high pressure, gains momentum and flows into the main flow pipe 23, so that a sufficient amount can be supplied.

  The throttle member 27 has a plurality of throttle portions (the first flow path 31, the second flow path 32, and the third flow path 33), and each of the pair of sleeve portions 7s has a thickness. Since the lubricant J is selected so as to be evenly supplied to each of the direction change paths 12 provided, the selection is made according to the above-described fluctuation conditions. It is preferable to configure the lubricant supplied to the lubricant supply passages of the left and right sleeve portions to be evenly supplied depending on the position or the changing conditions of the lubricant used.

As described above, according to the end cap 7 and the linear guide 10 including the end cap 7, the lubricant J is evenly distributed to the left and right endless circulation paths according to the changing conditions such as the difference in the position of the lubricant supply port 26. Can be supplied.
In addition, the end cap for linear motion guide devices and the linear motion guide device according to the present invention are not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, a linear guide in which the rolling element is a ball (ball) has been described as an example of the linear motion guide device according to the present invention. However, the linear guide is not limited to this, and for example, the linear guide in which the rolling element is a roller. However, it is of course applicable.
Further, for example, the throttle member 27 in the above embodiment connects the communication hole 26 a serving as the outlet of the lubricant supply port 26 and the main flow pipe 23 to the lubricant supply path 21, and is connected to the right branch pipe 24. Although the example in which the branching part is detachably fitted has been described, the present invention is not limited thereto, and the throttle member according to the present invention is provided with a lubricant at a position between the lubricant supply port 26 and the communication port 22. If it is mounted so as to reduce the thickness of the supply path and give a pressure resistance, it can be mounted at various positions. Moreover, although it demonstrated by the example fitted and attached so that attachment or detachment is possible, it is not limited to this, For example, you may fix after mounting | wearing by adhere | attaching. However, the throttle member can be changed so that the lubricant J can be evenly supplied to the left and right endless circulation paths according to the changing conditions. It is preferable that the diaphragm member is detachably mounted.

  Further, for example, in the above-described embodiment, the example in which the second flow path 32 and the third flow path 33 branched from the first flow path 31 are provided as one throttle member 27 as the throttle section has been described. However, the present invention is not limited to this, and a throttle member having only one flow path as a throttle part is provided at a position between the lubricant supply port and the communication port to reduce the thickness of the lubricant supply path and to provide a pressure feeding resistance. Also, the number of throttle members to be mounted is not limited to one throttle member, and two or more throttle members may be mounted on the lubricant supply path.

  Specifically, for example, as in the throttle member 27A of the first modification shown in FIG. 5, only a flow path 33A having a rectangular parallelepiped-shaped block member having one elliptical cross section as a throttle portion is formed. Is provided. The throttle member 27A having the flow path 33A can be detachably fitted to the lubricant supply path 21 at a position between the lubricant supply port 26 and the communication port 22 (see FIG. (See (b)).

  Here, the throttle member 27 </ b> A has a width dimension so that the mounting position of the throttle member 27 </ b> A in the lubricant supply path 21 can be fitted at an appropriate position in the longitudinal direction of the lubricant supply path 21. It is set, and the position to be fitted in the lubricant supply path 21 can be changed. By adopting such a configuration, the lubricant supply path through which the lubricant passes depends on the mounting orientation of the linear guide device such as the linear guide, the position of the lubricant supply port, or the changing conditions of the lubricant used. The length can be adjusted. Therefore, it is suitable for the configuration in which the lubricant is evenly supplied to the respective direction change paths provided in the pair of sleeve portions. In these cases, it may be fixed by tight fitting or may be fixed by an adhesive or the like.

Further, for example, a throttle member having only a flow path 33B having one circular cross section may be used as the throttle part, as in the throttle member 27B of the second modified example shown in FIG. The throttle member 27B can be detachably fitted to the lubricant supply path 21 at a position between the lubricant supply port 26 and the communication port 22 (see FIG. 5B). .
Furthermore, for example, as in the third modification shown in FIG. 7, two of the throttle member 27A and the throttle member 27B are used, and one throttle member 27A is supplied with lubricant to the lubricant supply path 21. The other throttle member 27B is fitted into a portion connecting the α-side tributary conduit 24 and the mainstream conduit 23 far from the port 26, and the β-side tributary conduit 24 and the mainstream conduit close to the lubricant supply port 26. 23 can be configured so as to be fitted into a portion connecting the two.

  In the above embodiment, the example in which the right lubricant supply port 26 can be used has been described. However, the present invention is not limited to this. For example, the communication hole of the left lubricant supply port 26 in the above embodiment is used. All of the lubricant supply ports 26a may be processed, and in use, any lubricant supply port may be selectively used by plugging the lubricant supply port 26 that is not used.

It is a top view of the linear guide which is one Embodiment of the linear guide apparatus which concerns on this invention, In the same figure, it has illustrated in the state which fractured | ruptured one part. It is explanatory drawing of one Embodiment of the end cap which concerns on this invention, The figure has shown XX sectional drawing in FIG. It is a perspective view of one embodiment of a diaphragm member concerning the present invention. It is explanatory drawing ((a), (b)) of one Embodiment of the aperture member which concerns on this invention. It is a figure explaining the modification (1st modification) of the aperture_diaphragm | restriction member which concerns on this invention, the figure (a) is the perspective view, and the figure (b) is the throttle member as a lubricant supply path. It is a perspective view in the mounted state. It is a figure explaining the modification (2nd modification) of the aperture_diaphragm | restriction member which concerns on this invention, the figure (a) is the perspective view, and the figure (b) is the throttle member as a lubricant supply path. It is a perspective view in the mounted state. It is a figure explaining the modification (3rd modification) of the lubricant supply path which concerns on this invention, The figure has shown the schematic corresponding to FIG. It is a perspective view of the linear guide which is an example of the conventional linear motion guide apparatus, In the same figure, it has illustrated in the state which fractured | ruptured one part. In the conventional end cap, it is a conceptual diagram of the example which supplied the lubricant from the end cap side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 2 Slider 3 Rolling body 4 Rolling body rolling groove (of guide rail) 5 Slider body 6 Rolling body rolling groove of (slider) 7 End cap 8 Direction change path 9 Side seal 10 Linear guide (linear motion guide device) )
DESCRIPTION OF SYMBOLS 11 Rolling body return path 12 Direction change path 21 Lubricant supply path 22 Communication port 23 Main flow pipe 24 Branch flow path 25 Lubricant supply path 26 Lubricant supply port 27 Restriction member 28 Fixing screw J Lubricant

Claims (3)

Guide rails having rolling element rolling grooves on both left and right side surfaces, and rolling element rolling grooves facing the rolling element rolling grooves of the guide rails on the inner surfaces of the pair of left and right sleeve portions, respectively, And a slider main body straddling the guide rail, the slider main body being relative to the guide rail via the plurality of rolling elements. It is used for a linear motion guide device that moves, is attached to each of the front and rear ends of the slider body, and is provided corresponding to each of the pair of sleeve portions, and includes both rolling elements rolling grooves of the guide rail and the slider body. A plurality of direction changing passages for communicating the rolling element rolling passage and the rolling element return passage so as to circulate the plurality of rolling elements, and a communication port for supplying a lubricant to the plurality of direction changing passages. A end cap having a lubricant supply passage, and a lubricant supply port for supplying the lubricant from the outside to the lubricant supply passage,
Wherein the lubricant supply passage, said at a position between the lubricant supply port and said communication port, and the mounted diaphragm member to provide a pumping resistance by narrowing the width of the lubricant supply passage, the restrictor member An end cap for a linear motion guide device, characterized in that the mounting position of the throttle member in the lubricant supply path can be changed .   The throttle member has a plurality of thicknesses of the throttle part, and the throttle part is arranged so that the lubricant is evenly supplied to the respective direction change paths provided in the pair of sleeve parts. The end cap for a linear motion guide device according to claim 1, wherein the thickness is selected. A guide rail having rolling element rolling grooves on both side surfaces, and a rolling element rolling groove facing the rolling element rolling groove of the guide rail on the inner surface of the sleeve portion, and the sleeve portion in its own axial direction A rolling element rolling path comprising a rolling element return passage penetrating the slider body and straddling the guide rail, and comprising both rolling elements rolling grooves of the guide rail and the slider body attached to both ends of the slider body. A pair of end caps having a direction changing path for communicating the path and the rolling element return path, and the direction changing path of the end cap and the rolling element return of the slider body, which are interposed in the rolling element rolling path. In a linear motion guide device comprising a plurality of rolling elements loosely fitted in a passage,
  The linear motion guide device according to claim 1, wherein the linear cap guide device end cap is mounted as the pair of end caps.

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