JP4552335B2 - Linear motion guide bearing device and cap - Google Patents

Linear motion guide bearing device and cap Download PDF

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Publication number
JP4552335B2
JP4552335B2 JP2001029101A JP2001029101A JP4552335B2 JP 4552335 B2 JP4552335 B2 JP 4552335B2 JP 2001029101 A JP2001029101 A JP 2001029101A JP 2001029101 A JP2001029101 A JP 2001029101A JP 4552335 B2 JP4552335 B2 JP 4552335B2
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Prior art keywords
cap
counterbore
margin
axial direction
guide rail
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JP2002227838A (en
JP2002227838A5 (en
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美典 水村
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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
    • F16C29/08—Arrangements for covering or protecting the ways
    • F16C29/082—Arrangements for covering or protecting the ways fixed to the way
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt 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
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/004—Fixing of a carriage or rail, e.g. rigid mounting to a support structure or a movable part
    • 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

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

Description

【０００１】
【発明の属する技術分野】
本発明は、産業機械等に用いられる直動案内軸受装置及び直動案内軸受装置を構成する案内レールの取付穴を閉塞するキャップの改良に関する。
【０００２】
【従来の技術】
従来のこの種の直動案内軸受装置としては、例えば図４に示すように、軸方向に延びる案内レール１と、該案内レール１上に軸方向に移動可能に跨架されたスライダ２とを備えたものが知られている。
案内レール１の両側面にはそれぞれ軸方向に延びる直線状の転動体転動溝３が形成され、また、案内レール１の上面には下面まで貫通する取付穴２０が軸方向に所定の間隔で複数箇所形成されており、スライダ２のスライダ本体２Ａには、その両袖部４の内側面に、それぞれ転動体転動溝３に対向する直線状の転動体転動溝３１が形成されている。
【０００３】
そして、これらの向き合った両転動体転動溝３，３１の間には転動体としての多数の鋼球ｂが転動自在に装填され、その鋼球ｂの転動を介してスライダ２が案内レール１上を軸方向に沿って移動できるようになっている。この移動につれて、案内レール１とスライダ２との間に介在する鋼球ｂは転動してスライダ２のスライダ本体２Ａの端部に移動するが、スライダ２を軸方向に継続して移動させていくためには、これらの鋼球ｂを無限に循環させる必要がある。
【０００４】
そこで、スライダ本体２Ａの袖部４内に更に軸方向に貫通する直線状の転動体通路８を形成すると共に、スライダ本体２Ａの前後両端にそれぞれ転動体循環部品としてのエンドキャップ５を固定し、このエンドキャップ５に上記両転動体転動溝３，３１間と上記転動体通路８とを連通する半円弧状に湾曲した転動体循環Ｒ部６を形成することにより、転動体無限循環軌道を構成している。
【０００５】
ところで、上記直動案内軸受装置の基台等への取り付けは、案内レール１の取付穴２０にボルト７０（図７参照）を挿入して該ボルト７０のねじ部を基台のねじ穴に螺合することにより該直動案内軸受装置を基台等へ取り付るようにしており、かかる取り付け後は、取付穴２０の座ぐり穴２１の上部に合成樹脂製等のキャップを嵌め込んで該取付穴２０を閉塞する。
【０００６】
キャップとしては、図５に示すように、座ぐり穴２１の穴径に対応する外径寸法を有する短円柱部４１と、該短円柱部４１の外周部に周方向に略等間隔で複数箇所設けられたＲ突起状の締め代部４２とを備えたキャップ４０や、図６に示すように、座ぐり穴２１の穴径に対応する外径寸法を有する短円柱部５１と、該短円柱部５１の外周部に周方向全周に沿って設けられた締め代部５２とを備えたキャップ５０等が用いられている。キャップ４０，５０の締め代部４２，５２は、共にキャップ４０，５０の上面と同一面か略同一面とされており、また、キャップ４０，５０の最大径は座ぐり穴２１の穴径より大とされている。
【０００７】
図７にキャップ５０の座ぐり穴２１への取付例を示す。
キャップ５０を座ぐり穴２１に挿入した時点では、座ぐり穴２１の面取り部２２にキャップ５０の短円柱部５１と締め代部５２との間の面取り部５３が当接しており、この状態でキャップ５０の上面に当て材６０をあてがい、該当て材６０の上面を金槌６１等で叩くことにより、キャップ５０の締め代部５２が座ぐり穴２１の面取り部２２と内径面との境部当たりで削り取られ、これにより、キャップ５０全体が座ぐり穴２１に嵌め込まれて取付穴２０が閉塞される。
【０００８】
【発明が解決しようとする課題】
しかしながら、上記従来のキャップにおいては、締め代部の上面がキャップの上面と略同一面とされているため、座ぐり穴２１の面取り部２２の存在により、締め代部の削り屑がキャップから完全に切り離されずに取付穴２０の周辺に残り、キャップから切り離されない削り屑の除去作業に手間がかかるという不都合がある。
【０００９】
本発明はかかる不都合を解消するためになされたものであり、案内レールの取付穴をキャップで閉塞した際にキャップの締め代部の削り屑が該キャップから切り離されやすくなるようにして該削り屑の除去作業の容易化を図ることができる直動案内軸受装置及びキャップを提供することを目的とする。
【００１０】
【課題を解決するための手段】
かかる目的を達成するために、請求項１に係る直動案内軸受装置は、両側部に軸方向に延びる直線状の転動体転動溝を有して軸方向に延長され、上面から下面まで貫通する取付穴が軸方向に所定の間隔で複数箇所形成された案内レールと、外周部に締め代部を有し、該締め代部が前記取付穴の座ぐり穴上部に嵌め込まれる際に削り取られることによって該座ぐり穴に固定されて前記取付穴を閉塞するキャップと、前記案内レールの前記転動体転動溝に対向する直線状の転動体転動溝を有し、これらの転動体転動溝間に挿入された多数の転動体の転動を介して軸方向に沿って移動可能に前記案内レールに支持されたスライダとを備えた直動案内軸受装置において、
前記キャップの締め代部を該キャップの上面より軸方向下方に配置し、且つ、前記キャップの上面から前記締め代部までの寸法をＡとし、前記座ぐり穴の面取り部の軸方向寸法をＢとした場合に、Ａ≧Ｂとなるように前記締め代部を前記キャップの外周部に設けたことを特徴とする。
【００１１】
請求項２に係るキャップは、外周部に締め代部を有し、該締め代部が直動案内軸受装置を構成する案内レールの取付穴の座ぐり穴上部に嵌め込まれる際に削り取られることによって該座ぐり穴に固定されて前記取付穴を閉塞するキャップであって、
前記締め代部を上面より軸方向下方に配置し、且つ、上面から前記締め代部までの寸法をＡとし、前記座ぐり穴の面取り部の軸方向寸法をＢとした場合に、Ａ≧Ｂとなるように前記締め代部を外周部に設けたことを特徴とする。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図を参照して説明する。図１は本発明の実施の形態の一例である直動案内軸受装置の案内レールの取付穴に嵌め込まれるキャップを示す図であり、（ａ）は正面図、（ｂ）は（ａ）の平面図、図２はキャップの変形例を示す図であり、（ａ）は正面図、（ｂ）は（ａ）の平面図、図３は案内レールに設けられた取付穴の要部断面図である。なお、この実施の形態の直動案内軸受装置は従来例（図４）に対して、案内レールの取付穴を閉塞するキャップが相違するのみであるため、ここではキャップについてのみ説明する。
【００１３】
図１に示すキャップ１００は、座ぐり穴２１（図３参照）の穴径に対応する外径寸法を有する短円柱部１０１と、該短円柱部１０１の外周部に周方向に略等間隔で複数箇所設けられたＲ突起状の締め代部１０２とを備えており、該締め代部１０２はキャップ１００の上面より軸方向下方に配置され、また、キャップ１００の最大径は座ぐり穴２１の穴径より大とされている。
【００１４】
ここで、この実施の形態では、キャップ１００の上面から締め代部１０２までの寸法をＡとし、座ぐり穴２１の面取り部２２の軸方向寸法をＢとした場合に、Ａ≧Ｂとなるように締め代部１０２をキャップ１００の外周部に設けている。
そして、キャップ１００を取付穴２０の座ぐり穴２１に挿入した時点では、座ぐり穴２１の面取り部２２にキャップ１００の下端の面取り部１０３が当接しており、この状態で図７と同様にしてキャップ１００の上面に当て材６０をあてがい、該当て材６０の上面を金槌６１等で叩くことにより、キャップ１００の締め代部１０２が座ぐり穴２１の面取り部２２と内径面との境部当たりで削り取られ、これにより、キャップ１００全体が座ぐり穴２１に嵌め込まれて取付穴２０が閉塞される。
【００１５】
このとき、キャップ１００は、Ａ≧Ｂとなるように締め代部１０２をキャップ１００の外周部に設けているため、締め代部１０２の削り屑がキャップ１００から切り離され、該削り屑の除去作業の容易化を図ることができる。
図２にキャップの変形例を示す。このキャップ２００は、座ぐり穴２１の穴径に対応する外径寸法を有する短円柱部２０１と、該短円柱部２０１の外周部に周方向全周に沿って設けられた締め代部２０２とを備えており、該締め代部２０２はキャップ２００の上面より軸方向下方に配置され、また、キャップ２００の最大径は座ぐり穴２１の穴径より大とされている。そして、この変形例についても、キャップ２００の上面から締め代部２０２までの寸法をＡとし、座ぐり穴２１の面取り部２２の軸方向寸法をＢとした場合に、Ａ≧Ｂとなるように締め代部２０２をキャップ２００の外周部に設けている。
【００１６】
そして、キャップ２００を座ぐり穴２１に挿入した時点では、座ぐり穴２１の面取り部２２にキャップ２００の短円柱部２０１と締め代部２０２との間の面取り部２０３が当接しており、この状態で、図７と同様にしてキャップ２００の上面に当て材６０をあてがい、該当て材６０の上面を金槌６１等で叩くことにより、キャップ２００の締め代部２０２が座ぐり穴２１の面取り部２２と内径面との境部当たりで削り取られ、これにより、キャップ２００全体が座ぐり穴２１に嵌め込まれて取付穴２０が閉塞される。
【００１７】
このとき、キャップ２００は、Ａ≧Ｂとなるように締め代部２０２をキャップ２００の外周部に設けているため、締め代部２０２の削り屑がキャップ２００から切り離され、該削り屑の除去作業の容易化を図ることができる。
【００１８】
【発明の効果】
上記の説明から明らかなように、本発明によれば、案内レールの取付穴をキャップで閉塞した際にキャップの締め代部の削り屑を該キャップから切り離されやすくすることができるので、該削り屑の除去作業の容易化を図ることができるという効果が得られる。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例である直動案内軸受装置の案内レールの取付穴に嵌め込まれるキャップを示す図であり、（ａ）は正面図、（ｂ）は（ａ）の平面図である。
【図２】キャップの変形例を示す図であり、（ａ）は正面図、（ｂ）は（ａ）の平面図である。
【図３】案内レールに設けられた取付穴の要部断面図である。
【図４】直動案内軸受装置の全体斜視図である。
【図５】従来のキャップを示す図であり、（ａ）は正面図、（ｂ）は（ａ）の平面図である。
【図６】従来のキャップを示す図であり、（ａ）は正面図、（ｂ）は（ａ）の平面図である。
【図７】従来のキャップを取付穴の座ぐり穴に嵌め込む方法を説明するための説明図である。
【符号の説明】
１…案内レール
２…スライダ
２Ａ…スライダ本体
３…転動体転動溝
ｂ…鋼球（転動体）
２０…取付穴
２１…座ぐり穴
２２…座ぐり穴の面取り部
３１…転動体転動溝
１００，２００…キャップ
１０２，２０２…締め代部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a linear motion guide bearing device used for industrial machines and the like, and an improvement in a cap that closes a mounting hole of a guide rail constituting the linear motion guide bearing device.
[0002]
[Prior art]
As a conventional linear motion guide bearing device of this type, for example, as shown in FIG. 4, a guide rail 1 extending in the axial direction and a slider 2 straddled on the guide rail 1 so as to be movable in the axial direction are provided. What you have is known.
Linear rolling element rolling grooves 3 extending in the axial direction are formed on both side surfaces of the guide rail 1, and mounting holes 20 penetrating to the lower surface are formed on the upper surface of the guide rail 1 at predetermined intervals in the axial direction. A plurality of locations are formed, and in the slider body 2A of the slider 2, linear rolling element rolling grooves 31 facing the rolling element rolling grooves 3 are formed on the inner surfaces of both sleeve portions 4 respectively. .
[0003]
A large number of steel balls b as rolling elements are slidably loaded between the rolling grooves 3, 31 facing each other, and the slider 2 is guided through the rolling of the steel balls b. The rail 1 can be moved along the axial direction. With this movement, the steel ball b interposed between the guide rail 1 and the slider 2 rolls and moves to the end of the slider body 2A of the slider 2, but the slider 2 is continuously moved in the axial direction. In order to go, it is necessary to circulate these steel balls b infinitely.
[0004]
Therefore, a linear rolling element passage 8 penetrating in the axial direction is further formed in the sleeve portion 4 of the slider body 2A, and end caps 5 as rolling element circulation parts are fixed to the front and rear ends of the slider body 2A, respectively. By forming a rolling element circulation R portion 6 curved in a semicircular arc shape that communicates between the rolling element rolling grooves 3, 31 and the rolling element passage 8 in the end cap 5, the rolling element infinite circulation trajectory is formed. It is composed.
[0005]
By the way, the linear guide bearing device is attached to the base or the like by inserting a bolt 70 (see FIG. 7) into the mounting hole 20 of the guide rail 1 and screwing the screw portion of the bolt 70 into the screw hole of the base. The linear guide bearing device is attached to a base or the like by combining them, and after such attachment, a cap made of synthetic resin or the like is fitted into the upper part of the counterbore hole 21 of the attachment hole 20. The mounting hole 20 is closed.
[0006]
As shown in FIG. 5, the cap has a short cylindrical portion 41 having an outer diameter corresponding to the hole diameter of the counterbore 21, and a plurality of locations at substantially equal intervals in the circumferential direction on the outer peripheral portion of the short cylindrical portion 41. The cap 40 provided with the provided R-protrusion-shaped fastening margin portion 42, the short cylindrical portion 51 having an outer diameter corresponding to the hole diameter of the counterbore 21 as shown in FIG. A cap 50 or the like provided with a tightening margin 52 provided along the entire circumference in the outer circumferential portion of the portion 51 is used. The fastening margins 42 and 52 of the caps 40 and 50 are both the same surface or substantially the same surface as the upper surfaces of the caps 40 and 50, and the maximum diameter of the caps 40 and 50 is greater than the hole diameter of the counterbore hole 21. It is considered large.
[0007]
FIG. 7 shows an example of attaching the cap 50 to the counterbore 21.
When the cap 50 is inserted into the counterbore 21, the chamfered portion 53 between the short cylindrical portion 51 of the cap 50 and the tightening allowance 52 is in contact with the chamfered portion 22 of the counterbore 21. By applying the contact member 60 to the upper surface of the cap 50 and hitting the upper surface of the material 60 with a hammer 61 or the like, the tightening margin 52 of the cap 50 hits the boundary between the chamfered portion 22 of the counterbore 21 and the inner diameter surface. Thus, the entire cap 50 is fitted into the counterbore hole 21 and the mounting hole 20 is closed.
[0008]
[Problems to be solved by the invention]
However, in the conventional cap, since the upper surface of the tightening margin is substantially the same as the upper surface of the cap, the shavings 22 of the counterbore 21 are completely removed from the cap. There is an inconvenience that it takes time to remove the shavings that remain in the periphery of the mounting hole 20 without being separated, and are not separated from the cap.
[0009]
The present invention has been made in order to eliminate such inconvenience, and when the mounting hole of the guide rail is closed with a cap, the shavings of the tightening margin of the cap are easily separated from the cap. It is an object of the present invention to provide a linear motion guide bearing device and a cap capable of facilitating the removal operation.
[0010]
[Means for Solving the Problems]
In order to achieve this object, a linear motion guide bearing device according to claim 1 has a linear rolling element rolling groove extending in the axial direction on both sides and extending in the axial direction, penetrating from the upper surface to the lower surface. Guide rails in which a plurality of mounting holes are formed at predetermined intervals in the axial direction, and there are tightening margins on the outer periphery, and the tightening margins are scraped off when fitted into the upper part of the counterbore of the mounting hole. A cap which is fixed to the counterbore hole and closes the mounting hole, and a linear rolling element rolling groove facing the rolling element rolling groove of the guide rail, and these rolling element rolling In a linear motion guide bearing device comprising a slider supported by the guide rail so as to be movable along the axial direction through rolling of a large number of rolling elements inserted between grooves,
The cap margin part of the cap is disposed below the upper surface of the cap in the axial direction, the dimension from the upper surface of the cap to the clamp margin part is A, and the axial dimension of the chamfered part of the counterbore hole is B. In this case, the fastening margin is provided on the outer peripheral portion of the cap so that A ≧ B.
[0011]
The cap according to claim 2 has a tightening margin portion on the outer peripheral portion, and the cap margin portion is scraped off when fitted into the upper portion of the counterbore of the mounting hole of the guide rail constituting the linear motion guide bearing device . A cap fixed to the counterbore and closing the mounting hole;
A ≧ B when the fastening margin is arranged axially below the upper surface, the dimension from the upper surface to the clamping margin is A, and the axial dimension of the chamfered portion of the counterbore is B. The fastening margin is provided on the outer peripheral portion so that
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1A and 1B are views showing a cap fitted into a mounting hole of a guide rail of a linear guide bearing device as an example of an embodiment of the present invention, wherein FIG. 1A is a front view and FIG. 1B is a plan view of FIG. FIG. 2 is a view showing a modified example of the cap, FIG. 2A is a front view, FIG. 2B is a plan view of FIG. 3A, and FIG. 3 is a cross-sectional view of a main part of a mounting hole provided in the guide rail. is there. The linear motion guide bearing device of this embodiment is different from the conventional example (FIG. 4) only in the cap that closes the mounting hole of the guide rail, and therefore only the cap will be described here.
[0013]
A cap 100 shown in FIG. 1 includes a short cylindrical portion 101 having an outer diameter corresponding to the hole diameter of a counterbore 21 (see FIG. 3), and an outer peripheral portion of the short cylindrical portion 101 at substantially equal intervals in the circumferential direction. A plurality of R-projection-shaped fastening margins 102 provided at a plurality of locations, the fastening margins 102 being arranged axially below the upper surface of the cap 100, and the maximum diameter of the cap 100 being that of the counterbore 21. It is assumed to be larger than the hole diameter.
[0014]
Here, in this embodiment, when the dimension from the upper surface of the cap 100 to the tightening margin 102 is A and the dimension in the axial direction of the chamfered portion 22 of the counterbore 21 is B, A ≧ B. The fastening margin 102 is provided on the outer periphery of the cap 100.
When the cap 100 is inserted into the counterbore 21 of the mounting hole 20, the chamfered portion 103 at the lower end of the cap 100 is in contact with the chamfered portion 22 of the counterbore 21. By applying the contact member 60 to the upper surface of the cap 100 and hitting the upper surface of the material 60 with a hammer 61 or the like, the tightening margin 102 of the cap 100 is the boundary between the chamfered portion 22 of the counterbore 21 and the inner diameter surface. The cap 100 is entirely fitted into the counterbore 21 and the mounting hole 20 is closed.
[0015]
At this time, since the cap 100 is provided with the tightening allowance 102 on the outer peripheral portion of the cap 100 so that A ≧ B, the shavings of the tightening allowance 102 are separated from the cap 100 and the shavings are removed. Can be facilitated.
FIG. 2 shows a modified example of the cap. The cap 200 includes a short cylindrical portion 201 having an outer diameter corresponding to the hole diameter of the counterbore hole 21, and a fastening margin portion 202 provided on the outer peripheral portion of the short cylindrical portion 201 along the entire circumferential direction. The fastening margin 202 is disposed axially below the upper surface of the cap 200, and the maximum diameter of the cap 200 is larger than the hole diameter of the counterbore hole 21. And also about this modification, when the dimension from the upper surface of the cap 200 to the tightening margin 202 is A, and the axial direction dimension of the chamfered portion 22 of the counterbore 21 is B, A ≧ B A tightening margin 202 is provided on the outer periphery of the cap 200.
[0016]
When the cap 200 is inserted into the counterbore 21, the chamfered portion 203 between the short cylindrical portion 201 and the tightening margin 202 of the cap 200 is in contact with the chamfered portion 22 of the counterbore 21. In this state, the contact member 60 is applied to the upper surface of the cap 200 in the same manner as in FIG. The entire cap 200 is fitted into the counterbore 21 and the mounting hole 20 is closed.
[0017]
At this time, since the cap 200 is provided with the tightening margin 202 on the outer peripheral portion of the cap 200 so that A ≧ B, the shavings of the tightening margin 202 are separated from the cap 200 and the shavings are removed. Can be facilitated.
[0018]
【The invention's effect】
As is clear from the above description, according to the present invention, when the mounting hole of the guide rail is closed with the cap, the shavings at the tightening margin of the cap can be easily separated from the cap. The effect that the removal operation | work of waste can be facilitated is acquired.
[Brief description of the drawings]
FIGS. 1A and 1B are views showing a cap fitted in a guide rail mounting hole of a linear guide bearing device as an example of an embodiment of the present invention, FIG. 1A is a front view, and FIG. It is a top view.
2A and 2B are diagrams showing a modified example of the cap, in which FIG. 2A is a front view and FIG. 2B is a plan view of FIG.
FIG. 3 is a cross-sectional view of a main part of a mounting hole provided in the guide rail.
FIG. 4 is an overall perspective view of a linear guide bearing device.
5A and 5B are diagrams showing a conventional cap, wherein FIG. 5A is a front view, and FIG. 5B is a plan view of FIG.
6A and 6B are diagrams showing a conventional cap, in which FIG. 6A is a front view, and FIG. 6B is a plan view of FIG.
FIG. 7 is an explanatory diagram for explaining a method of fitting a conventional cap into a counterbore of a mounting hole.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Guide rail 2 ... Slider 2A ... Slider main body 3 ... Rolling body rolling groove
b ... Steel balls (rolling elements)
DESCRIPTION OF SYMBOLS 20 ... Mounting hole 21 ... Counterbore hole 22 ... Chamfering part of counterbore hole 31 ... Rolling body rolling groove 100, 200 ... Cap 102, 202 ... Tightening part

Claims (2)

両側部に軸方向に延びる直線状の転動体転動溝を有して軸方向に延長され、上面から下面まで貫通する取付穴が軸方向に所定の間隔で複数箇所形成された案内レールと、外周部に締め代部を有し、該締め代部が前記取付穴の座ぐり穴上部に嵌め込まれる際に削り取られることによって該座ぐり穴に固定されて前記取付穴を閉塞するキャップと、前記案内レールの前記転動体転動溝に対向する直線状の転動体転動溝を有し、これらの転動体転動溝間に挿入された多数の転動体の転動を介して軸方向に沿って移動可能に前記案内レールに支持されたスライダとを備えた直動案内軸受装置において、
前記キャップの締め代部を該キャップの上面より軸方向下方に配置し、且つ、前記キャップの上面から前記締め代部までの寸法をＡとし、前記座ぐり穴の面取り部の軸方向寸法をＢとした場合に、Ａ≧Ｂとなるように前記締め代部を前記キャップの外周部に設けたことを特徴とする直動案内軸受装置。A guide rail having a linear rolling element rolling groove extending in the axial direction on both sides and extending in the axial direction and having a plurality of mounting holes penetrating from the upper surface to the lower surface at predetermined intervals in the axial direction; A cap that has a tightening margin on the outer periphery, and is fixed to the counterbore hole by being scraped off when the tightening portion is fitted over the counterbore hole of the mounting hole; and A linear rolling element rolling groove facing the rolling element rolling groove of the guide rail is provided, and along the axial direction through the rolling of many rolling elements inserted between these rolling element rolling grooves. In a linear motion guide bearing device comprising a slider supported by the guide rail so as to be movable,
The cap margin part of the cap is disposed below the upper surface of the cap in the axial direction, the dimension from the upper surface of the cap to the clamp margin part is A, and the axial dimension of the chamfered part of the counterbore hole is B. In this case, the linear guide bearing device is characterized in that the tightening margin portion is provided on the outer peripheral portion of the cap so that A ≧ B. 外周部に締め代部を有し、該締め代部が直動案内軸受装置を構成する案内レールの取付穴の座ぐり穴上部に嵌め込まれる際に削り取られることによって該座ぐり穴に固定されて前記取付穴を閉塞するキャップであって、
前記締め代部を上面より軸方向下方に配置し、且つ、上面から前記締め代部までの寸法をＡとし、前記座ぐり穴の面取り部の軸方向寸法をＢとした場合に、Ａ≧Ｂとなるように前記締め代部を外周部に設けたことを特徴とするキャップ。There is a tightening margin on the outer periphery, and the tightening margin is fixed to the counterbore by being scraped off when fitted into the upper part of the counterbore of the mounting hole of the guide rail constituting the linear motion guide bearing device. a cap for closing the mounting hole,
A ≧ B when the fastening margin is arranged axially below the upper surface, the dimension from the upper surface to the clamping margin is A, and the axial dimension of the chamfered portion of the counterbore is B. A cap characterized in that the fastening margin is provided on the outer periphery so as to become.
JP2001029101A 2001-02-06 2001-02-06 Linear motion guide bearing device and cap Expired - Fee Related JP4552335B2 (en)

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JP4551871B2 (en) * 2006-01-18 2010-09-29 日本トムソン株式会社 Linear motion guide unit with plug on track rail
JP5765320B2 (en) * 2011-11-29 2015-08-19 日本精工株式会社 Cap of linear guide device, linear guide device
JP6122636B2 (en) * 2012-12-26 2017-04-26 日本トムソン株式会社 Linear motion guide unit with plug on track rail
CN104603485B (en) * 2013-09-03 2017-03-08 日本精工株式会社 The lid of linear guide apparatus and linear guide apparatus
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