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

End cap for linear motion guide device and linear motion guide device Download PDF

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JP4816570B2
JP4816570B2 JP2007140550A JP2007140550A JP4816570B2 JP 4816570 B2 JP4816570 B2 JP 4816570B2 JP 2007140550 A JP2007140550 A JP 2007140550A JP 2007140550 A JP2007140550 A JP 2007140550A JP 4816570 B2 JP4816570 B2 JP 4816570B2
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rolling
lubricant
path
lubricant supply
rolling element
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JP2008291967A (en
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芳樹 北嶋
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NSK Ltd
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NSK Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/0638—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
    • F16C29/0642—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls
    • F16C29/0647—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls with load directions in X-arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0609—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bearings For Parts Moving Linearly (AREA)
  • Rolling Contact Bearings (AREA)

Description

本発明は、例えば製造装置や加工機械等の各種機械に用いられ、スライダが複数の転動体を介して案内レールに沿って相対移動可能な直動案内装置に係り、特に、この種の直動案内装置に好適に用いることができるエンドキャップに関する。   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.

この種の直動案内装置は、例えば図８に例示する直動案内装置１００のように、自身外面の左右側面部に複数の転動体転動溝４を有する案内レール１と、その案内レール１に跨設されて案内レール１の転動体転動溝４に対向する転動体転動溝６を内面に有するスライダ１０２とを備えて構成されている。
同図に示すように、スライダ１０２は、スライダ本体５と、その両端面部に装着された一対のエンドキャップ１０７とを有している。各エンドキャップ１０７の内部には、略Ｕ字状の方向転換路（同図では不図示）がそれぞれに形成されており、各方向転換路は、スライダ本体５の転動体戻し通路１１、および、案内レール１およびスライダ本体５の両転動体転動溝４，６からなる転動体転動路８の端部同士を繋いで円環状の無限循環路が複数構成されている。そして、その複数の無限循環路内には、エンドキャップ１０７の方向転換路およびスライダ本体５の転動体戻し通路１１に遊嵌するとともに転動体転動路８に介装された状態に複数の転動体３がそれぞれ充填される。 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.

これにより、この種の直動案内装置は、充填された複数の転動体３が、案内レール１に対するスライダ１０２の相対移動に伴って各無限循環路内を転動し、一方のエンドキャップ１０７内の方向転換路で方向転換した後、転動体戻し通路１１に導入されて反対側の方向転換路から再び転動体転動路８に戻るという循環をしつつ、これら複数の転動体３を介してスライダ１０２が案内レール１の長手方向に沿って円滑に相対移動するようになっている。   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.

さらに、この種の直動案内装置では、その案内レールとスライダ相互の相対移動をより円滑にするために、エンドキャップに、その内部の方向転換路から各無限循環路内に潤滑剤を供給するための潤滑剤供給路が形成されている。例えば特許文献１ないし２に記載の技術では、図８に示すように、エンドキャップ１０７の幅方向中央部に、潤滑剤供給口１２６を設けており、この潤滑剤供給口１２６にニップル１２６ｎが取り付けられている。そして、潤滑剤供給口１２６に連通する潤滑剤供給路１２１をエンドキャップ１０７の、スライダ本体５側面との対向面に形成している。   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.

ここで、これら特許文献１ないし２に記載の技術では、エンドキャップ１０７の幅方向中央の位置から左右の袖部に均等に潤滑剤を供給するために、潤滑剤供給路が左右対称の構成であり、ニップル１２６ｎから潤滑剤供給路１２１を介して潤滑剤を左右の各方向転換路に供給し、各方向転換路それぞれにほぼ均等に潤滑剤を振り分けて供給できるようになっている。そして、各方向転換路から各無限循環路内に供給された潤滑剤によって、案内レールとスライダ相互の相対移動をより円滑にするとともに、長期に亘って安定した性能を維持することを可能としている。
実公平４−３１２６号公報（図４） 実公平６−３９１４４号公報（図４） 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)

ところで、この種の直動案内装置を、例えばＸ−Ｙテーブル装置の案内として使用し、且つ、潤滑剤を外部から供給する構成で用いる際に、装置周辺の部材構成との兼ね合いで、潤滑剤供給用の配管を、直動案内装置のスライダの幅方向中央の位置に接続できない場合がある。このような場合、例えば図９に例示するように、潤滑剤供給口１２６を、エンドキャップ１０７の側面１０７ｔ等、幅方向中央から離間した位置に設けるとともに、その潤滑剤供給口１２６に潤滑剤供給用の配管を接続する必要が生じる。そのため、同図に示すように、エンドキャップ１０７の側面１０７ｔから潤滑剤Ｊを供給する場合は、潤滑剤供給口１２６から、潤滑剤が方向転換路１２へ供給される連通口１２１ｋの箇所まで、経由する潤滑剤供給路１２１の長さが左右で異なることになる。   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.

しかしながら、上述した特許文献１ないし２に記載の技術では、潤滑剤供給路が左右対称であり、図９に例示するように、エンドキャップの胴部１０７ｄに形成された、潤滑剤供給路の幅方向に延びる部分１２１ｗと、幅方向左右の袖部１０７ｓでの上下方向に延びる部分１２１ｂとでの相互の管路の太さにはほとんど差異がない状態に設定されている。そのため、同図に示すように、幅方向中央ＣＬから離間した位置に設けた潤滑剤供給口１２６から潤滑剤供給路１２１を介して潤滑剤Ｊを各方向転換路１２に供給しようとしても、左右に圧送される潤滑剤Ｊの圧送抵抗に差異が生じてしまう。   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.

つまり、潤滑剤供給口１２６から遠いα側（同図での左側）に流れる潤滑剤Ｊの圧送抵抗は、潤滑剤供給路１２１の幅方向に延びる部分１２１ｗとそれ以外の左の袖部に形成された上下方向に延びる部分１２１ｂにおける抵抗との和になる。したがって、α側の潤滑剤供給路１２１の圧送抵抗は、供給路の奥にいくにつれて大きくなっていく。これに対し、潤滑剤供給口１２６に近いβ側（同図での右側）に流れる潤滑剤Ｊの圧送抵抗は、潤滑剤供給路１２１の幅方向に延びる部分１２１ｗをほとんど経由しない。そのため、ほぼ、右側の袖部に形成された上下方向に延びる部分１２１ｂにおける圧送抵抗のみとなる。したがって、潤滑剤供給口１２６に近いβ側に流れる潤滑剤Ｊの量が多くなり、結果として、潤滑剤供給口から遠いα側には潤滑剤Ｊが流れ難くなり、α側への潤滑剤Ｊの供給量が少なくなるのである。   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.

このように、潤滑剤を圧送する際の抵抗は、潤滑剤が経由する潤滑剤供給路の長さによって大きく影響を受ける。そのため、潤滑剤供給口に対して潤滑剤供給路が左右非対称である場合には、左右への潤滑剤の供給量に差異が生じ、左右の無限循環路それぞれに均等に潤滑剤を供給できず、潤滑剤の量が少ない方向転換路からその無限循環路内に供給される潤滑剤が早期に不足するおそれがある。これにより、左右の無限循環路のいずれか一方での潤滑剤不足が生じる要因となり、潤滑剤が不足すれば、直動案内装置の円滑な作動が損なわれてしまうことになる。   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.

そこで、本発明は、このような問題点に着目してなされたものであって、潤滑剤供給口の位置の違い等の変動条件に応じて、左右の無限循環路に均等に潤滑剤を供給し得る直動案内装置用エンドキャップ、および直動案内装置を提供することを目的としている。   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.

上記課題を解決するために、本発明のうち第一の発明は、左右の両側面に転動体転動溝をそれぞれ有する案内レールと、その案内レールの転動体転動溝に対向する転動体転動溝を左右一対の袖部の内側面にそれぞれ有し且つ該一対の袖部に自身の軸方向に貫通する転動体戻し通路を有するとともに前記案内レールに跨設されるスライダ本体とを備え、前記スライダ本体が複数の転動体を介して前記案内レールに沿って相対移動する直動案内装置に用いられ、前記スライダ本体の前後両端それぞれに取り付けられて、前記一対の袖部それぞれに対応して設けられて前記案内レールおよびスライダ本体の両転動体転動溝からなる転動体転動路と前記転動体戻し通路とを前記複数の転動体を循環させるように連通させる複数の方向転換路と、その複数の方向転換路に潤滑剤を供給するための連通口を有する潤滑剤供給路と、その潤滑剤供給路に外部から潤滑剤を供給するための潤滑剤供給口と、を有するエンドキャップであって、前記潤滑剤供給路には、前記潤滑剤供給口と前記連通口との間の位置に、潤滑剤供給路の太さを狭めて圧送抵抗を与える絞り部材が装着されており、該絞り部材は、前記潤滑剤供給路での当該絞り部材の装着位置が変えられるようになっていることを特徴としている。 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 .

第一の発明に係る直動案内装置用エンドキャップによれば、これに形成された潤滑剤供給路には、潤滑剤供給口と前記連通口との間の位置に、潤滑剤供給路の太さを狭めて圧送抵抗を与える絞り部材が装着されているので、この絞り部材によって、潤滑剤供給口の位置の違い等の変動条件に応じて、左右の各袖部の潤滑剤供給路に供給される潤滑剤を、それぞれ均等に供給されるように構成することができる。   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.

また、第一の発明に係る直動案内装置用エンドキャップにおいて、前記絞り部材が、前記潤滑剤供給路での当該絞り部材の装着位置が変えられるようになっているので、例えば前記直動案内装置の取り付け姿勢、前記潤滑剤供給口の位置、または用いられる潤滑剤等の変動条件に応じて、前記一対の袖部それぞれに設けられた各方向転換路に対して潤滑剤が均等に供給されるように構成する上で好適である。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.

ここで、第一の発明に係る直動案内装置用エンドキャップにおいて、前記絞り部材は、その絞り部の太さが複数設定されており、前記一対の袖部それぞれに設けられた各方向転換路に対して潤滑剤が均等に供給されるように、その絞り部の太さが選定されていることは好ましい。このような構成であれば、例えば前記直動案内装置の取り付け姿勢、前記潤滑剤供給口の位置、または用いられる潤滑剤等の変動条件に応じて、左右の各袖部の潤滑剤供給路に供給される潤滑剤を、それぞれ均等に供給されるように構成する上で好適である。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.

また、本発明のうち第二の発明は、両側面に転動体転動溝を有する案内レールと、その案内レールの転動体転動溝に対向する転動体転動溝を袖部の内側面に有し且つ該袖部に自身の軸方向に貫通する転動体戻し通路を有するとともに前記案内レールに跨設されるスライダ本体と、そのスライダ本体の両端部に取り付けられて前記案内レールおよびスライダ本体の両転動体転動溝からなる転動体転動路と前記転動体戻し通路とを連通させる方向転換路を有する一対のエンドキャップと、前記転動体転動路に介装されるとともに、前記エンドキャップの方向転換路および前記スライダ本体の転動体戻し通路に遊嵌する複数の転動体と、を備える直動案内装置において、前記一対のエンドキャップとして、第一の発明に係る直動案内装置用エンドキャップが装着されていることを特徴としている。   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.

第二の発明に係る直動案内装置によれば、第一の発明に係る直動案内装置用エンドキャップが装着されているので、この直動案内装置を、例えばＸ−Ｙテーブル装置の案内として使用し、且つ、潤滑剤を外部から供給する構成で使用する際に、装置周辺の部材の構成との兼ね合いで、直動案内装置のスライダの幅方向中央の位置に潤滑剤供給用の配管を接続できない場合であっても、潤滑剤供給口の位置の違い等の変動条件に応じて、左右の無限循環路に均等に潤滑剤を供給することができる。   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.

上述のように、本発明によれば、潤滑剤供給口の位置の違い等の変動条件に応じて、左右の無限循環路に均等に潤滑剤を供給し得る直動案内装置用エンドキャップ、および直動案内装置を提供することができる。   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.

以下、本発明に係る直動案内装置の一実施形態であるリニアガイドについて図面を適宜参照して説明する。なお、図１はそのリニアガイドの平面図であり、同図ではその一部を破断した状態で図示している。また、図２は、本発明に係る直動案内装置用エンドキャップの一実施形態の説明図であり、同図は、図１でのＸ−Ｘ断面図を示している。なお、上述した図７に示す従来の直動案内装置と同様の構成については、同一の符号を付して説明する。   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.

図１に示すように、このリニアガイド１０は、直線状に形成された案内レール１と、その案内レール１に跨設された略コ字状の横断面形状をもつスライダ２とを備えている。この案内レール１には、その左右側面部に、軌道として転動体転動溝４が二条ずつ計四条形成されている。一方、スライダ２は、その内面部に、案内レール１の各転動体転動溝４にそれぞれ対向する四つの軌道として転動体転動溝６を有している。そして、これら案内レール１およびスライダ２相互の転動体転動溝４，６から構成される転動体転動路８に複数の球（ボール）の転動体３が介装されている。   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.

さらに、図１に示すように、スライダ２は、スライダ本体５と、このスライダ本体５の両端面部５ａに装着された一対のエンドキャップ７とを備えている。スライダ本体５は金属製であり、その内部には、転動体転動溝６と並行して自身の軸方向に貫通する転動体戻し通路１１が形成されている。
一方、一対のエンドキャップ７は、合成樹脂製であり、スライダ本体５の外形形状と略相似形状且つ略同一の寸法をなす略コ字状に形成されている（図２参照）。そして、各エンドキャップ７は、スライダ２の両端面に二本の固定ねじ２８で取り付けられている。各エンドキャップ７の内部には、略Ｕ字状の方向転換路１２が左右の袖部７ｓにそれぞれ二箇所形成されている。各方向転換路１２は、転動体戻し通路１１および転動体転動路８の端部同士を繋いでおり、上記転動体転動路８、転動体戻し通路１１および両側の方向転換路１２によって円環状の無限循環路が４つ構成される。そして、各無限循環路に対し、転動体転動路８に介装されるとともに、方向転換路１２および転動体戻し通路１１に遊嵌して複数の転動体３が装填される。 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.

これにより、スライダ２の相対移動に伴って転動体転動路８を転動した転動体３は、一方のエンドキャップ７内の方向転換路１２で方向転換した後、転動体戻し通路１１に導入されて反対側の方向転換路１２から再び転動体転動路８に戻るという循環をしつつ、これら複数の転動体３を介してスライダ２が案内レール１の長手方向に沿って相対移動可能になっている。なお、このリニアガイド１０には、図１に示すように、スライダ２の相対移動方向での端面となる、各エンドキャップ７の外側面に、サイドシール９がそれぞれ取り付けられている。このサイドシール９は、不図示のリップ部以外はエンドキャップ７の外形形状と略相似形状且つ同一の寸法に形成されており、そのリップ部によって塵埃などの異物が案内レール１とエンドキャップ７との間からスライダ２の内部に侵入するのを防止している。   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.

ここで、上記各エンドキャップ７は、図２に示すように、スライダ本体５端面と対向する接合面７ｍに、各方向転換路１２に潤滑剤を供給するための連通口２２を有する潤滑剤供給路２１を備えている。
以下、このエンドキャップ７および潤滑剤供給路２１について図２〜図４を適宜参照しつつ詳しく説明する。なお、図３は、潤滑剤供給路の太さを狭めて圧送抵抗を与える絞り部材の斜視図であり、また、図４は、潤滑剤供給路に着脱可能に装着される絞り部材の装着部分を詳しく説明するための図であり、同図（ａ）は、図２の一部を示し、また、同図（ｂ）は図２ないし図４（ａ）でのＡ−Ａ断面図を示している。 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.

このエンドキャップ７は、図２に示すように、略コ字状をなすことで、幅方向での中央に位置する胴部７ｄと、その胴部７ｄ両側に形成された一対の袖部７ｓとを有して形成されている。エンドキャップ７の胴部７ｄには、当該胴部７ｄの幅方向中央ＣＬから離間した位置（同図の例では右の端面７ｔ）に、外部から潤滑剤を導入するための潤滑剤供給口２６が設けられている。この潤滑剤供給口２６は、その軸方向に貫通する細径の連通穴２６ａが穿孔されており、この連通穴２６ａが潤滑剤供給路２１に連通している。そして、連通穴２６ａを穿孔した右側の潤滑剤供給口２６の雌ねじにニップル２６ｎが取り付けられ、このニップル２６ｎに不図示の供給管路が着脱可能に接続されるようになっている。なお、同図の左の端面についても、タップ加工および連通穴を追加工によって形成することによって、潤滑剤供給口として使用できる潤滑剤供給口２６用の下穴が設けられている。   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.

なお、胴部７ｄの幅方向中央の位置についても潤滑剤供給口２６が潤滑剤供給路２１に連通するように設けられているが、本実施形態の例では、栓２６ｂによって閉塞している。また、本実施形態の例では、他方のエンドキャップ７については、潤滑剤供給用には使用しないため、両側の潤滑剤供給口とも潤滑剤供給路２１に連通しないようにされるとともに、中央については埋栓が施されている。   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.

ここで、この潤滑剤供給路２１は、主流管路２３と支流管路２４とを備えて構成されている。詳しくは、主流管路２３は、潤滑剤供給路２１のうちの、胴部７ｄの幅方向に沿って形成された部分であり、上記ニップル２６ｎを取り付けた側の潤滑剤供給口２６にその主供給路２１の幅方向での一方の端部（同図の右側）が連通している。また、支流管路２４は、潤滑剤供給路２１のうちの、左右の一対の袖部７ｓそれぞれに袖部７ｓに沿って上下方向に形成された部分である。   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.

左右の支流管路２４は、各支流管路２４の上端部と主流管路２３の左右の各端部とが連通している。また、上記連通口２２は、左右の支流管路２４の途中部分での各方向転換路１２に対応した位置にそれぞれ設けられ、支流管路２４を介して主流管路２３と前記方向転換路１２とを連通させるように構成されている。本実施形態の例では、左右の支流管路２４は、左右各二条の無限循環路に対応する左右二つの方向転換路１２毎に、それぞれ対向して形成された連通口２２を二つ有している。これにより、潤滑剤を外部からニップル２６ｎに圧送することによって、潤滑剤供給口２６から潤滑剤供給路２１の主流管路２３に潤滑剤が導入され、さらに主流管路２３に導入された潤滑剤が左右の支流管路２４に圧送され、支流管路２４の各連通口２２から各方向転換路１２に供給されるようになっている。   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.

ここで、この潤滑剤供給路２１には、潤滑剤供給口２６と連通口２２との間の位置に、潤滑剤供給路２１の太さを狭めて圧送抵抗を与える絞り部材２７が着脱可能に装着されている。
詳しくは、本実施形態での絞り部材２７は、上記潤滑剤供給口２６の出口となる連通穴２６ａと主流管路２３とを繋ぐとともに、右側の支流管路２４に分枝する部分に嵌め込まれている。 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.

絞り部材２７は、図３に斜視図を示すように、直方体状の角柱こま形をなすブロック部材である。この絞り部材２７の長手方向での横断面は正方形状であり、その長手方向に沿って、円形断面をもつ第一の流路３１が貫通して設けられている。
そして、この第一の流路３１の一方の端部側（同図での上側）２７ｂに対し、絞り部材２７の長手方向に直交する二つの面２７ｃ、２７ｄから、絞り部材２７の長手方向との直交方向に沿って、円形断面をもつ第二の流路３２および第三の流路３３がそれぞれ第一の流路３１まで連通して設けられている。 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.

そして、上記第一の流路３１、第二の流路３２および第三の流路３３は、それぞれ絞り部になっており、各絞り部の太さは、左右一対の袖部７ｓそれぞれに設けられた各方向転換路１２に対して潤滑剤Ｊが均等に供給されるように、それぞれの絞り部の太さが設定されている。なお、この絞り部材２７は、潤滑剤供給路２１に装着する前の状態において、複数の絞り部材が予め用意されている。これら複数の絞り部材は、それぞれの各絞り部（第一の流路３１、第二の流路３２および第三の流路３３）の太さが複数種類設定されている。そして、一対の袖部７ｓそれぞれに設けられた各方向転換路１２に対して潤滑剤Ｊが均等に供給されるように、装着されるリニアガイドの取り付け姿勢、潤滑剤供給口２６の位置、または用いられる潤滑剤等の変動条件に応じてその絞り部の太さが選定される。   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.

そして、図４に示すように、これら変動条件に合わせて最も好適な絞り部の太さが設定された絞り部材２７を装着している。つまり、本実施形態の絞り部材２７の例では、その第一の流路３１の他方の端部が、上記連通穴２６ａの側に向けて、この連通穴２６ａに連通するとともに、第二の流路３２が右の支流管路２４に連通し且つ第三の流路３３が主流管路２３に連通するように、潤滑剤供給路２１に着脱可能に嵌め込まれて装着される。   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.

次に、この潤滑剤供給路２１の作用・効果について説明する。
上述のように、このリニアガイド１０によれば、そのエンドキャップ７に潤滑剤供給路２１を備えており、この潤滑剤供給路２１は、各方向転換路１２に連通形成された連通口２２を有し、各無限循環路に向けて潤滑剤Ｊを供給するようになっているので、潤滑剤を適宜供給することによって案内レール１とスライダ２相互の相対移動をより円滑にするとともに、長期に亘ってリニアガイド１０の安定した性能を維持することを可能としている。 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.

そして、このリニアガイド１０によれば、そのエンドキャップ７に形成された潤滑剤供給路２１には、潤滑剤供給口２６と連通口２２との間の位置に、潤滑剤供給路２１の太さを狭めて圧送抵抗を与える絞り部材２７が着脱可能に装着されているので、この絞り部材２７によって、左右の各袖部７ｓの潤滑剤供給路２１（支流管路２４）に供給される潤滑剤Ｊを、左右の支流管路２４それぞれに均等に供給されるように構成することができる。つまり、潤滑剤供給口２６から遠いα側（図２での左側）および潤滑剤供給口２６に近いβ側（図２での右側）の左右両側に流れる潤滑剤Ｊの量をほぼ同じにすることができ、左右両側にほぼ均等に潤滑剤Ｊを供給することができる。α側へは距離が長くなるが、第三の流路３３によって絞られ、高圧となった潤滑剤Ｊが勢いを得て主流管路２３内へ流入するため、十分な量を供給できる。   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.

そして、この絞り部材２７は、その絞り部（第一の流路３１、第二の流路３２および第三の流路３３）の太さが複数設定されており、一対の袖部７ｓそれぞれに設けられた各方向転換路１２に対して潤滑剤Ｊが均等に供給されるように、上述のような変動条件に応じて選定されているので、リニアガイドの取り付け姿勢、潤滑剤供給口２６の位置、または用いられる潤滑剤等の変動条件に応じて、左右の各袖部の潤滑剤供給路に供給される潤滑剤を、それぞれ均等に供給されるように構成する上で好適である。   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.

以上説明したように、このエンドキャップ７およびこれを備えるリニアガイド１０によれば、潤滑剤供給口２６の位置の違い等の変動条件に応じて、左右の無限循環路に均等に潤滑剤Ｊを供給することができる。
なお、本発明に係る直動案内装置用エンドキャップおよび直動案内装置は、上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しなければ種々の変形が可能である。 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.

例えば、上記実施形態では、本発明に係る直動案内装置として、転動体が球（ボール）であるリニアガイドを例に説明したが、これに限定されず、例えば転動体がローラであるリニアガイドであっても勿論適用可能である。
また、例えば上記実施形態での絞り部材２７は、潤滑剤供給路２１に対し、潤滑剤供給口２６の出口となる連通穴２６ａと主流管路２３とを繋ぐとともに、右側の支流管路２４に分枝する部分に着脱可能に嵌め込まれている例で説明したが、これに限定されず、本発明に係る絞り部材は、潤滑剤供給口２６と連通口２２との間の位置に、潤滑剤供給路の太さを狭めて圧送抵抗を与えるように装着されていれば、種々の位置に装着することができる。また、着脱可能に嵌め込まれて装着される例で説明したが、これに限定されず、例えば接着することによって装着後は固定してもよい。しかし、変動条件に応じて、左右の無限循環路に均等に潤滑剤Ｊを供給可能なように絞り部材を変更可能とし、また、例えばメンテナンス時に部品交換を容易とする上では、本発明に係る絞り部材が着脱可能に装着されることは好ましい。 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.

また、例えば上記実施形態では、一の絞り部材２７に、絞り部として、第一の流路３１から分枝する第二の流路３２および第三の流路３３を設けた例で説明したが、これに限定されず、絞り部として一つの流路のみを有する絞り部材を、潤滑剤供給口と前記連通口との間の位置に、潤滑剤供給路の太さを狭めて圧送抵抗を与えるように装着してよいし、また、装着する絞り部材の数についても一の絞り部材に限らず、２またはそれ以上の複数の絞り部材を潤滑剤供給路に装着してもよい。   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.

具体的には、例えば図５に示す第一の変形例の絞り部材２７Ａのように、直方体状の角柱こま形をなすブロック部材に、絞り部として一つの楕円状横断面をもつ流路３３Ａのみを設ける。そして、この流路３３Ａを有する絞り部材２７Ａを、潤滑剤供給路２１に対し、潤滑剤供給口２６と連通口２２との間の位置に着脱可能に嵌め込む構成とすることができる（同図（ｂ）参照）。   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)).

ここで、この絞り部材２７Ａは、潤滑剤供給路２１での当該絞り部材２７Ａの装着位置が、潤滑剤供給路２１の長手方向での適宜の位置に嵌め込むことができるようにその幅寸法が設定されており、潤滑剤供給路２１に嵌め込む位置が変えられるようになっている。このような構成とすることによって、リニアガイドなど直動案内装置の取り付け姿勢、潤滑剤供給口の位置、または用いられる潤滑剤等の変動条件に応じて、潤滑剤が経由する潤滑剤供給路の長さを調整可能である。したがって、一対の袖部それぞれに設けられた各方向転換路に対して潤滑剤が均等に供給されるように構成する上で好適である。なお、これらの場合も、きつめの嵌め合いによって固定するようにしてもよいし、接着剤等によって固定するようにしてもよい。   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.

また、例えば、図６に示す第二の変形例の絞り部材２７Ｂのように、絞り部として一つの円状横断面をもつ流路３３Ｂのみを有する絞り部材を用いてもよい。そして、この絞り部材２７Ｂを、潤滑剤供給路２１に対し、潤滑剤供給口２６と連通口２２との間の位置に着脱可能に嵌め込む構成とすることができる（同図（ｂ）参照）。
さらにまた、例えば、図７に示す第三の変形例のように、上記絞り部材２７Ａおよび絞り部材２７Ｂの二つを用い、潤滑剤供給路２１に対し、一方の絞り部材２７Ａは、潤滑剤供給口２６から遠いα側の支流管路２４と主流管路２３とを繋ぐ部分に嵌め込むとともに、他方の絞り部材２７Ｂは、潤滑剤供給口２６から近いβ側の支流管路２４と主流管路２３とを繋ぐ部分に嵌め込むように構成することができる。 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.

また、上記実施形態では、右の潤滑剤供給口２６が使用できるようになっている例で説明したが、これに限定されず、例えば上記実施形態での左側の潤滑剤供給口２６の連通穴２６ａについても全て加工済みとし、使用に際し、使用しない方の潤滑剤供給口２６に埋栓をすることで、いずれかの潤滑剤供給口を選択的に使用するようにしてもよい。   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.

本発明に係る直動案内装置の一実施形態であるリニアガイドの平面図であり、同図ではその一部を破断した状態で図示している。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. 本発明に係るエンドキャップの一実施形態の説明図であり、同図は、図１でのＸ−Ｘ断面図を示している。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. 本発明に係る絞り部材の一実施形態の斜視図である。It is a perspective view of one embodiment of a diaphragm member concerning the present invention. 本発明に係る絞り部材の一実施形態の説明図（（ａ）、（ｂ））である。It is explanatory drawing ((a), (b)) of one Embodiment of the aperture member which concerns on this invention. 本発明に係る絞り部材の変形例（第一の変形例）を説明する図であり、同図（ａ）はその斜視図、また、同図（ｂ）はその絞り部材を潤滑剤供給路に装着した状態での斜視図である。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. 本発明に係る絞り部材の変形例（第二の変形例）を説明する図であり、同図（ａ）はその斜視図、また、同図（ｂ）はその絞り部材を潤滑剤供給路に装着した状態での斜視図である。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. 本発明に係る潤滑剤供給路の変形例（第三の変形例）を説明する図であり、同図は図２に対応する概略図を図示している。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. 従来の直動案内装置の一例であるリニアガイドの斜視図であり、同図ではその一部を破断した状態で図示している。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. 従来のエンドキャップにおいて、そのエンドキャップ側面から潤滑剤を供給した例の概念図である。In the conventional end cap, it is a conceptual diagram of the example which supplied the lubricant from the end cap side.

符号の説明Explanation of symbols

１ 案内レール
２ スライダ
３ 転動体
４ （案内レールの）転動体転動溝
５ スライダ本体
６ （スライダの）転動体転動溝
７ エンドキャップ
８ 方向転換路
９ サイドシール
１０ リニアガイド（直動案内装置）
１１ 転動体戻し通路
１２ 方向転換路
２１ 潤滑剤供給路
２２ 連通口
２３ 主流管路
２４ 支流管路
２５ 潤滑剤供給路
２６ 潤滑剤供給口
２７ 絞り部材
２８ 固定ねじ
Ｊ 潤滑剤 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)

左右の両側面に転動体転動溝をそれぞれ有する案内レールと、その案内レールの転動体転動溝に対向する転動体転動溝を左右一対の袖部の内側面にそれぞれ有し且つ該一対の袖部に自身の軸方向に貫通する転動体戻し通路を有するとともに前記案内レールに跨設されるスライダ本体とを備え、前記スライダ本体が複数の転動体を介して前記案内レールに沿って相対移動する直動案内装置に用いられ、前記スライダ本体の前後両端それぞれに取り付けられて、前記一対の袖部それぞれに対応して設けられて前記案内レールおよびスライダ本体の両転動体転動溝からなる転動体転動路と前記転動体戻し通路とを前記複数の転動体を循環させるように連通させる複数の方向転換路と、その複数の方向転換路に潤滑剤を供給するための連通口を有する潤滑剤供給路と、その潤滑剤供給路に外部から潤滑剤を供給するための潤滑剤供給口と、を有するエンドキャップであって、
前記潤滑剤供給路には、前記潤滑剤供給口と前記連通口との間の位置に、潤滑剤供給路の太さを狭めて圧送抵抗を与える絞り部材が装着されており、該絞り部材は、前記潤滑剤供給路での当該絞り部材の装着位置が変えられるようになっていることを特徴とする直動案内装置用エンドキャップ。 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 . 前記絞り部材は、その絞り部の太さが複数設定されており、前記一対の袖部それぞれに設けられた各方向転換路に対して潤滑剤が均等に供給されるように、その絞り部の太さが選定されていることを特徴とする請求項１に記載の直動案内装置用エンドキャップ。   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. 両側面に転動体転動溝を有する案内レールと、その案内レールの転動体転動溝に対向する転動体転動溝を袖部の内側面に有し且つ該袖部に自身の軸方向に貫通する転動体戻し通路を有するとともに前記案内レールに跨設されるスライダ本体と、そのスライダ本体の両端部に取り付けられて前記案内レールおよびスライダ本体の両転動体転動溝からなる転動体転動路と前記転動体戻し通路とを連通させる方向転換路を有する一対のエンドキャップと、前記転動体転動路に介装されるとともに、前記エンドキャップの方向転換路および前記スライダ本体の転動体戻し通路に遊嵌する複数の転動体と、を備える直動案内装置において、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,
前記一対のエンドキャップとして、請求項１または２に記載の直動案内装置用エンドキャップが装着されていることを特徴とする直動案内装置。  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.
JP2007140550A 2007-05-28 2007-05-28 End cap for linear motion guide device and linear motion guide device Expired - Fee Related JP4816570B2 (en)

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Publication number Priority date Publication date Assignee Title
US9528553B2 (en) * 2012-08-27 2016-12-27 Nsk Ltd. End cap, and linear guide device including the end cap

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KR20110084398A (en) 2008-11-14 2011-07-22 아사히 가라스 가부시키가이샤 Method for producing glass member provided with sealing material layer, and method for manufacturing electronic device
JP2023132534A (en) * 2022-03-11 2023-09-22 日本精工株式会社 Linear guide

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JPH0639144Y2 (en) * 1987-08-07 1994-10-12 日本精工株式会社 Linear guide device
JPH062024Y2 (en) * 1987-11-18 1994-01-19 日本精工株式会社 Straight guide device
DE4330772B4 (en) * 1993-09-10 2013-02-14 Robert Bosch Gmbh Linear guide device
JP2005221008A (en) * 2004-02-05 2005-08-18 Nsk Ltd Linear motion guide device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9528553B2 (en) * 2012-08-27 2016-12-27 Nsk Ltd. End cap, and linear guide device including the end cap

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