JPH05126149A - Double row ball chain - Google Patents

Double row ball chain

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Publication number
JPH05126149A
JPH05126149A JP31521391A JP31521391A JPH05126149A JP H05126149 A JPH05126149 A JP H05126149A JP 31521391 A JP31521391 A JP 31521391A JP 31521391 A JP31521391 A JP 31521391A JP H05126149 A JPH05126149 A JP H05126149A
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JP
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Patent type
Prior art keywords
balls
member
connection
spacers
ball
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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JP31521391A
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Japanese (ja)
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JPH0672610B2 (en )
Inventor
Takeki Shirai
井 武 樹 白
Original Assignee
T H K Kk
テイエチケー株式会社
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/38Ball cages
    • F16C33/3825Ball cages formed as a flexible belt, e.g. spacers connected by a thin film
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00Bearings for parts moving only linearly
    • F16C29/04Ball or roller bearings
    • F16C29/06Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633Ball 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
    • F16C29/0635Ball 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
    • F16C29/0638Ball 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
    • F16C29/0642Ball 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/38Ball cages
    • F16C33/40Ball cages for multiple rows of balls
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30Parts of ball or roller bearings
    • F16C33/38Ball cages
    • F16C33/41Ball cages comb-shaped
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00Application independent of particular apparatuses
    • F16C2300/02General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Abstract

PURPOSE: To improve strength of a connection part, smoothness of ball circulation, and alignment motion of the balls by arranging a flexible connecting member between rows of the balls parallelly arranged with a specified distance, and providing spacer parts to be inserted into the balls, on both side of the connecting member.
CONSTITUTION: A double row ball chain is provided with a connection plate 2 and spacers 4. The spacers 4 are provided on the bilateral sides of the connection plate 2 all with distances relevant to the diameter of balls over its length, for forming a small-diameter flat cylindrical member. Recessions 5 are formed on both ends for slidably holding balls 3. The connection plate 2 is a thin plate member extending along cenral axes 0, 0 of ball rows parallelly extended. The spacers 4 are connected to both edges thereof, for forming a flexible member. Connection strength between the spacers is thus improved. Position, distances in respect to the balls are held and reinforced so that alignment motion of the balls is effectively done. The balls of two rows are simultaneously shifted from a load area to an unload area, so that circulation of the balls are smoothly done.
COPYRIGHT: (C)1993,JPO&Japio

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明はボールのころがりを利用した直線運動案内装置に用いられるボールチェインに関し、特に二列のボール列を保持して無限循環を可能とする複列ボールチェインに関する。 The present invention relates to an ball chain used in the linear motion guide apparatus using the rolling of the ball, to the plural ball row chain enabling endless circulation in particular holds the balls of the two rows.

【0002】 [0002]

【従来の技術】従来の無限摺動タイプの直線運動案内装置にあっては、軌道台と摺動台間に介在される多数のボールを無限循環させる無限循環路が構成されている。 In the Background Art Linear motion guide device of the conventional endless sliding type, the endless circulation path for endless circulation a number of balls interposed between the track rail and the sliding table is constructed. この無限循環路内を転動移行するボール同士の相互摩擦をなくす目的で、本出願人は各ボールを無限循環路の全域に亙って互いに接触しないように保持するボールチェインを提案した(特願平3ー141481号参照)。 The endless circulation passage for the purpose of eliminating the friction between balls rolling proceeds, the present applicant has proposed a ball chain that held so as not to contact each other over each ball on the entire endless circulation path (JP Gantaira 3 - see No. 141481).

【0003】 [0003]

【発明が解決しようとする課題】しかしながら上記した先願のボールチェインは単列構成であり、直線運動案内装置の各無限循環路にひとつづつ装着する必要がある。 [SUMMARY OF THE INVENTION However ball chain prior application described above is a single row arrangement, it is necessary to Hitotsuzutsu attached to each endless circulation path of the linear motion guide device.

【0004】また、このようなボールチェインはボールを無限循環させる際に屈曲を繰り返すので、チェインの連結部の強度をより一層高めることが要請されている。 Further, since such a ball chain repeats bending when to endless circulation balls, are requested to increase further the strength of the connecting portion of the chain.

【0005】さらに、ボールの整列性をより一層高めることが要請されている。 [0005] Furthermore, it has been requested to enhance further the alignment of the ball.

【0006】本発明は上記した従来技術の課題を解決するためになされたもので、その目的とするところは、連結部の強度向上と、ボールの循環の円滑さの向上と、さらにボールの整列運動を向上させ得る複列ボールチェインを提供することにある。 [0006] The present invention has been made to solve the problems of the prior art described above, it is an object of the strength improvement of the connecting portion, and the improvement of smoothness of circulation of the ball, further alignment of the ball and to provide a double row ball chain capable of improving exercise.

【0007】 [0007]

【課題を解決するための手段】上記目的を達成するために、本発明にあっては、所定間隔を設けて互いに平行に並べられた二列のボール列の間に可撓性の連結部材を配置し、該連結部材の両側に各ボール列の各ボール間に挿入されるスペーサを設けてなることを特徴とする。 To achieve the above object, according to the Invention The, in the present invention, the flexible connecting member between the two rows rows of balls which are arranged parallel to each other with a predetermined distance arrangement is characterized by comprising providing a spacer that is inserted between the balls of each ball row on either side of the connecting member.

【0008】前記二列のボール列は並列であることが効果的である。 [0008] Ball columns of the two rows, it is effective in parallel.

【0009】 [0009]

【作用】上記構成の複列ボールチェインにあっては、二列のボール列の各ボールの間に連結部材の左右に設けたスペーサ部を挿入して、ひとつのボールチェインでもって二列のボール列のボールが保持される。 [Action] In the double row ball chain having the above structure, two rows of inserting a spacer portion provided on the left and right of the connecting member between each ball of the ball train, balls two rows with a single ball chain row of balls is held.

【0010】そして、直線運動案内装置の2条の無限循環路内に装着することにより、二条のボール列を一度に組みつけることができる。 [0010] Then, by attaching to Article 2 of the endless circulation path of the linear motion guide device, it can be assembled the balls of two articles at once.

【0011】二条のチェインを一体化することにより、 [0011] By integrating the chain of two Articles,
ボールが荷重を負荷して転走する接触部分の面積を大きくとることができる。 Ball can take a large area of ​​the contact portion which run rolling with a load.

【0012】二列のボール列間に連結部材を配置することにより、各スペーサ間の連結強度向上を図ることができる。 [0012] By disposing the connecting member between the two rows of the ball train, it is possible to coupling strength improvement between each spacer.

【0013】また、スペーサ部は連結部材により姿勢および間隔を保持補強され、ボールの整列運動に効果的である。 [0013] The spacer portion is held reinforced attitude and spacing by a connecting member, it is effective to align the movement of the ball.

【0014】さらに、二列のボールを並列に配置しておけば、二列のボールが負荷域から無負荷域に同時に抜けるので、直線運動案内装置に組み込んだ場合に、負荷域から無負荷域に抜ける際のボールの応力振幅が均衡して摺動台の運動姿勢変化がなく、連結部材の循環運動によってボールの循環を円滑に行うことができ、摺動台走行時のローリング,ピッチング等の精度向上を図ることができる。 [0014] In addition, if placing the ball of two rows in parallel, because the ball of two rows at the same time passing in a no-load area from load range, when incorporated into a linear motion guide device, the no-load range from the load area in no sliding table motion and orientation change stress amplitude and balance of the ball when exiting, can be performed smoothly circulating ball by the circulating movement of the connecting member, the rolling at the time of sliding table running, pitching, etc. it is possible to improve the accuracy.

【0015】 [0015]

【実施例】以下に本発明を図示の実施例に基づいて説明する。 It will be described based on the illustrated embodiment of the present invention to EXAMPLES below. 本発明の一実施例に係る複列ボールチェインを示す図1及び図2において、1は複列ボールチェイン全体を示すもので、この複列ボールチェイン1は、概略、可撓性の連結部材としての連結板2と、この連結板2の左右両側に設けられ、二列のボール列B1,B2の各ボール3,…間に介在されるスペーサ部4と、を具備する構成となっている。 1 and 2 show a double-row ball chain according to an embodiment of the present invention, 1 shows the entire double row ball chain, the double row ball chain 1 is a schematic, as a flexible connecting member the connecting plate 2, is provided on the left and right sides of the connecting plate 2, has a configuration comprising two rows of ball rows B1, B2 each ball 3, the spacer 4 interposed between ... and.

【0016】スペーサ部4は連結板2の左右両側辺に沿ってボール径の間隔で全長に亙って設けられている。 The spacer 4 is provided over the entire length at intervals of ball diameter along the lateral both sides of the connecting plate 2. スペーサ部4は小径の扁平な円筒状部材で、その両端面にボール3を摺動自在に保持するための保持凹部5が設けられている。 Spacer 4 is a flat cylindrical member of small diameter, the holding recess 5 for holding the balls 3 slidably provided on both end faces thereof. この保持凹部5はボール3の球冠部が入り込む球面形状に成形されている。 The holding recess 5 is formed into a spherical shape with the spherical crown portion of the ball 3 enters. したがって、断面形状は鼓形状で、連結板2に固定される根元部の幅が広く、 Therefore, the cross-sectional shape in the hourglass shape, the width of the root portion fixed to the connecting plate 2 is wide,
スペーサ部4が倒れにい構造となっている。 Spacer portion 4 has become a have structure to collapse.

【0017】一方、連結板2は互いに平行に延びる左右のボール列の中心軸線O,Oに沿って延びる薄板状の部材で、その両側縁に上記スペーサ部4が連結されている。 Meanwhile, the connecting plate 2 is the center axis O of the right and left ball rows extending parallel to each other, a thin plate-like member extending along the O, the spacer portion 4 is connected to the side edges. この連結板3は可撓性部材で構成されるが、この実施例では、形状的にその板面に直交する方向にのみ変形可能となっている。 The coupling plate 3 is constituted by the flexible member, in this embodiment, it has only deformable in a direction perpendicular to the shape to the plate surface. そして、連結板2側縁の各スペーサ部4間の形状は、ボール3の外周形状に倣って円弧状となっている。 The shape between the respective spacer portions 4 of the connecting plate 2 side edge has a circular arc shape following the outer peripheral shape of the ball 3.

【0018】この連結板2の左右に設けられるスペーサ部4の配列は、二列のボール3を互いに同一位相とする並列、あるいは位相を異ならせる千鳥配列等、任意に選択することができる。 The sequence of the spacer portion 4 provided on the right and left of the connecting plate 2 can select the balls 3 of the two rows parallel to the same phase with each other, or staggered, etc. to vary the phase, optionally.

【0019】また、スペーサ部4の取り付け角度は連結板2の長手方向に対して直交する幅方向線Y上に配置されているが、図1(e) に示すように幅方向線Yに対して所定角度αを付けて突設するようにしてもよい。 Further, although the mounting angle of the spacer portion 4 are arranged on the widthwise line Y perpendicular to the longitudinal direction of the connecting plate 2, with respect to the width direction line Y as shown in FIG. 1 (e) it may be projected with a predetermined angle α Te.

【0020】この例ではスペーサ部4は連結板2に固定されているだけで互いに独立しているが、図1(f) に示すように、各スペーサ部4の自由端部同士を可撓性の連結片6によって連結するようにしてもよい。 [0020] While being independently just by spacer portion 4 in this example is fixed to the connecting plate 2, as shown in FIG. 1 (f), the flexible free ends of the respective spacer portions 4 it may be connected by a connecting piece 6.

【0021】そして、この複列ボールチェイン1は、連結板2を曲げることにより、図2(a)に示すように無端状に構成することができる。 [0021] Then, the plural ball row chain 1, by bending the connecting plate 2 can be configured in an endless shape as shown in FIG. 2 (a).

【0022】ここで、図1(e),(f)に示したように、スペーサ部4の取付角度を幅方向線Yに対して所定角度だけ傾斜させた構成の場合には、無端状とすると図2(b),(c)に示すようになる。 [0022] Here, FIG. 1 (e), the and as illustrated (f), the in the case of the configuration is inclined by a predetermined angle the mounting angle of the spacer portion 4 in the width direction line Y is endless Then FIG. 2 (b), the as shown in (c). すなわち、図2 That is, FIG. 2
(b)に矢印Aで示すようにスペーサ部4が連結板2の外側に位置するように曲げた場合には、スペーサ部4の間隔が付けね側から先端側に向かって開くように変化するので、図2(c)に示すように無端状にした場合、方向転換部においてはボール3とスペーサ部4との間に隙間gが生じる。 When the spacer portions 4 as shown by an arrow A in (b) it is bent to be positioned outside of the connecting plate 2, changing to open toward the front end side from the side Ne with the gap of the spacer portion 4 because, when the endless shape as shown in FIG. 2 (c), a gap g is formed between the balls 3 and the spacer portion 4 in the direction change unit. このように隙間が生じると、自由空間ではボール3が外れてしまうが、方向転換路を転動している際には隙間があってもボールが脱落するおそれはないので、直線運動案内装置に組み付ける場合には支承はない。 With such a gap is produced in the free space deviates the ball 3, but because the ball is not afraid of falling off even if a gap is when you are rolling direction changing passage, a linear motion guide device there is no support in the case of assembling.

【0023】一方、図2(b)に矢印Bで示すようにスペーサ部4が連結板2の内側に位置するように曲げた場合には、図2(c)に示すように、スペ−サ部4間の間隔が、スペーサ部4の付けね側から先端側に向かって閉じるように変化するので、間隔が狭くなった部位にてボール3とスペーサ部4が干渉して詰まり気味になる。 On the other hand, if the spacer 4 as shown by arrow B bent to be located on the inner side of the connecting plate 2 in FIG. 2 (b), as shown in FIG. 2 (c), space - Sa spacing between parts 4, since changes from the side Ne with the spacer portion 4 so as to close toward the distal end side, becomes clogged slightly interferes balls 3 and the spacer 4 is at the site where the interval is narrowed. しかし、この場合には、たとえば方向転換する際に、スペーサ部4を付け根部において連結板2に対して直角方向を撓ませることによって、干渉を逃がすことができるし、また、ボールピッチをボール3の保持に支承のない程度に若干大きくしておくことによって方向転換させることが可能である。 However, in this case, when for example turning, by deflecting the direction perpendicular to the coupling plate 2 in the base portion of the spacer portion 4, to be able to release the interference and the ball 3 ball pitch it is possible to divert by a degree no support to hold the set larger slightly.

【0024】なお、上記したスペーサ部4は、各ボール3の相互摩擦をなくす目的でボール3間に挿入されるものであり、その形状,構造は、上記したようなボール径よりもやや小さい円形に限らず、図3(a) に示すようなだ円形状としてもよく、また、連結板2と同程度の肉厚のスペーサ部42として、このスペーサ部42の左右両側にボール3を保持するための舌片7を設けるようにしてもよく、要するに他の部材に干渉しない構造であればよい。 [0024] Incidentally, the spacer portion 4 described above, for the purpose of eliminating the friction between the balls 3 and intended to be inserted between the balls 3, the shape, structure, slightly smaller circle than the ball diameter, as described above not limited to, may be a elliptical shape as shown in FIG. 3 (a), also as a spacer portion 42 of thickness substantially equal to that of the connecting plate 2, to hold the ball 3 on the left and right sides of the spacer portion 42 may be provided tongues 7 for, in short may be a structure that does not interfere with other members.

【0025】図4乃至図6は、上記複列ボールチェイン1を用いた直線運動案内装置の一例を示している。 [0025] FIGS. 4 to 6 shows an example of the linear motion guide apparatus using the double-row ball chain 1.

【0026】この直線運動案内装置は、軌道台20と、 [0026] The linear motion guide device includes a track rail 20,
この軌道台20に多数のボール3を介して摺動自在に組付けられる摺動台21とから構成されている。 And a sliding base 21 for assembled slidably via a number of balls 3 in the track rail 20.

【0027】図示例の直線運動案内装置は、軌道台20 The linear motion guide device of the illustrated example, track rail 20
の左右に2列づつ計4列のボール列を上下左右対称的に配して上下左右の定格荷重を等しくした四方向等荷重型のもので、4つの無限循環路22,…が設けられている。 It is of two rows at a time four rows four directions equal load type in which equal load rating vertically and horizontally the balls vertically and horizontally symmetrically disposed in the right and left, four endless circulation path 22, ... are provided there. そして、左右の上下二条の無限循環路22,は互いに平行になっていて、それぞれ、本発明の複列ボールチェイン1に保持された二条のボール列が組込まれている。 Then, the left and right upper and lower Nijo endless circulation path 22, is not parallel to each other, respectively, rows of balls Nijo held in the plural ball row chain 1 of the present invention is incorporated.

【0028】無限循環路22は、図5に示すように、互いに平行に延びる直線状の負荷ボール通路23と無負荷ボール通路24と、この負荷ボール通路23と無負荷ボール通路24の両端を結ぶ円弧状の方向転換路25とから構成される。 The endless circulation passage 22, as shown in FIG. 5, a linear load ball path 23 extending parallel to one another and unloaded ball passage 24, connecting both ends of the unloaded ball passage 24 and the loaded ball passage 23 composed of arc-shaped direction change path 25.

【0029】すなわち、軌道台20の左右側面には、長手方向に延びる突堤27,27を設けると共に、この突堤27,27の上下両角部にボール転走溝28を設け、 [0029] That is, the left and right side surfaces of the track rail 20, provided with a jetty 27, 27 extending in the longitudinal direction, the ball rolling groove 28 provided in the upper and lower two corners of the jetty 27,
一方、摺動台21の内側面にこのボール転走溝28に対応するボール転走溝29を設け、これらボール転走溝2 On the other hand, the provided ball rolling grooves 29 corresponding to the ball rolling grooves 28 on the inner surface of the sliding table 21, these ball rolling grooves 2
8,29間に複列ボールチェイン1に保持されたボール3が転動自在に介装されて荷重を支承する。 Ball 3 held in the double row ball chain 1 bearing the load is interposed rollably between 8 and 29. このボール転走溝28,29はこの実施例ではサーキュラアーク溝であり、ボール3は2点接触して転動する。 The ball rolling grooves 28, 29 are circular-arc grooves in this embodiment, the balls 3 are rolling in two-point contact.

【0030】もちろんサーキュラアーク溝に限定されるものではなく、図7に示すようなゴシックアーチ溝の場合にも使用することができる。 The course is not limited to circular-arc grooves, it can also be used in the case of the Gothic arch groove as shown in FIG.

【0031】ボールチェイン1は、軌道台の突堤27と摺動台21の内側面の形状およびボールの配置構成を考慮して、もっともスペース効率を高めるべく突堤27の先端と内側面間の隙間に連結板2を配置し、その両側のボール転走溝28,29間に傾斜して延びるような、図1(e)に示したタイプのものが用いられている。 The ball chain 1, taking into account the arrangement of the shape and the ball of the inner side surface of the track rail jetty 27 and the sliding table 21, the gap between the tip and the inner side surface of the protruding wall 27 to increase the highest space efficiency the connecting plate 2 arranged, such as extending obliquely between the ball rolling grooves 28, 29 on both sides, of the type shown in FIG. 1 (e) is used. そして、方向転換路25においては、スペーサ部4が連結板2の外側に位置するように曲げられて、図2(c)に示したように、スペーサ部4の間隔が付けね側から先端に向かって広がって、ボール3とスペーサ部4との間に若干の隙間gが形成されている。 Then, in the direction changing passage 25, the spacer portion 4 is bent to be positioned outside of the connecting plate 2, as shown in FIG. 2 (c), the tip from the side Ne with the gap of the spacer portion 4 headed spread, slight gap g is formed between the ball 3 and the spacer 4. この方向転換路は25 The direction changing passage 25
は、摺動台本体21aの両端面に取付けられた側蓋21 Is the side cover 21 attached to both end surfaces of the slide board body 21a
b,21bにて形成されている。 b, it is formed by 21b.

【0032】このボール3と各ボール転走溝28,29 [0032] each ball and the ball 3 rolling grooves 28, 29
との接触角、すなわち転走溝を水平にした状態で左右突堤27,27の中心を通る水平線H,Hに対するボール3の各ボール転走溝28,29との接触部の法線方向に描いた線、すなわち接触角線Xとのなす角は、ほぼ45 Contact angle, i.e. drawn in the normal direction of the contact portions between the ball rolling grooves 28, 29 of the ball 3 relative to the horizontal H, H passing through the center of the left and right jetty 27 in a state in which the rolling groove and a horizontal and lines, i.e. the angle between the contact angle lines X, approximately 45
度付近にとられている。 It has been taken in the vicinity of the time. また、この図示例のものは、左右の接触角線X,X,…が左右に向って徐々に開く外開き状になるようないわゆるDF構造となっている。 Further, those of the illustrated example, the left and right contact angle lines X, X, ... are so-called DF structure such that the outwardly opening shape opened gradually toward the right and left.

【0033】もっとも、ボールの接触角線の方向は、図8に示すように各ボールの接触角線X´…が左右に向かって徐々に閉じる内開き形状となるようないわゆるDB [0033] However, the direction of the contact angle line of the ball, so-called DB such that gradually closed inner opening shape toward the contact angle line X'... left and right of each ball as shown in FIG. 8
構造とすることもできる。 It can also be a structure. なお、図4に示すDF構造のものと同一の構成部分については同一の符号を付してその説明を省略する。 Incidentally, the same components as those of the DF structure shown in FIG. 4 will be omitted by the same reference numerals.

【0034】このDB構造の場合には、スペーサ部4がボール循環路の内側に傾むけておくことがスペース上好ましいが、そうすると方向転換の際にボールがつまりぎみになる。 [0034] In the case of this DB structure, it is the space preferably the spacer part 4 is kept toward inclined to the inside of the ball circulation passage, Then the ball is clogging Gimi during turning. そこで、図8(c) ,(d) に示すように、スペーサ部4を弾性変形させてボールの方向転換の際の軌跡を、H位置からH´位置に拡大させることによって逃がしている。 Accordingly, FIG. 8 (c), the has relief by enlargement as shown in (d), the spacer portion 4 is elastically deformed trajectories of the turning of the ball, from the H position to H'position. また、ボールピッチ間を、図8(b) に示すように、π(R D −R S )/(2×ボール数)分だけ大きくしてもよい。 Further, between the ball pitch, as shown in FIG. 8 (b), π (R D -R S) / may be increased by (2 × number of balls) minutes.

【0035】次に摺動台21が移動した際のボール8の動きについて説明する。 [0035] Next, the slide board 21 will be described the movement of the ball 8 at the time of the move.

【0036】摺動台21が軌道台20に対して移動すると、無限循環路22の負荷ボール通路23の摺動台21 [0036] When the sliding base 21 is moved relative to the track rail 20, the sliding base 21 of the load ball path 23 of the endless circulation passage 22
と軌道台20のボール転走溝28,29間を、ボール3,…が荷重を支承しながら転動し、摺動台21の移動方向に移動する。 And between the ball rolling grooves 28, 29 of the track rail 20, the balls 3, ... is roll while bearing a load, moves in the movement direction of the slide base 21.

【0037】この負荷域のボール3の移動によって、各ボール保持部材2がボール3と共に摺動台21の移動方向に移動し、複列ボールチェイン1が無限循環路22内を無限循環する。 [0037] by the movement of the ball 3 in the load range, the ball holding member 2 is moved in the moving direction of the slide base 21 along with the balls 3, the plural ball row chain 1 is endless circulating endless circulation passage 22. この複列ボールチェイン1の移動によって、負荷ボール通路23内には摺動台21の移動方向後側端からボール方向転換路25を通じて順次無負荷ボール通路24からボール3が供給される。 This by the movement of the plural ball row chain 1, is in the loaded ball passage 23 the ball 3 from the moving direction rear end successively from the unloaded ball passage 24 through the ball direction changing passage 25 of the sliding table 21 is supplied.

【0038】そして、無限循環路22の、負荷ボール通路23、方向転換路25,26および無負荷ボール通路24の全行程において、各ボール3はスペーサ部4間に保持されて、ボール3同士が互いに干渉することなく整列移動する。 [0038] Then, the endless circulation path 22, the loaded ball passage 23, the entire process of the direction changing passage 25, 26 and the unloaded ball passages 24, each ball 3 is held between the spacer portion 4, the ball 3 with each other alignment move without interfering with each other.

【0039】このように、二列のボール列間に連結板2 [0039] In this way, the connecting plate 2 in between the rows of balls two rows
を配置することにより、連結部の強度向上を図ることができる。 By placing the can improve the strength of the connecting portion.

【0040】スペーサ部4は連結板2により姿勢およびその間隔を保持補強されボール3の整列運動に効果的である。 The spacer section 4 is effective to align the movement of the ball 3 is held reinforced attitude and its distance by a connecting plate 2.

【0041】また、このように二列のチェインを一体化することにより、ボール3が荷重を負荷して転動する接触部の面積を大きくとることができる。 Further, by integrating this way a chain of two rows, it is possible to increase the area of ​​the contact portion which the ball 3 rolls to a load.

【0042】さらに、二列のボール3を所定ピッチPでもって並列に配置しておけば、図6(a),(b)に模式的に示すように、二列のボール3が負荷域Lから無負荷域Mに同時に抜けるので、ボール3の応力振幅(ウェービング)が均衡して摺動台20の運動姿勢変化がなく、連結板2の循環運動によってボール3の循環を円滑に行うことができ、摺動台20走行時のローリング,ピッチング等の精度向上を図ることができる。 [0042] Further, if arranged two rows balls 3 in parallel with a predetermined pitch P, as schematically shown in FIG. 6 (a), (b), the balls 3 two rows load range L since at the same time exits the no-load range M from no motion change in the attitude of the sliding base 20 in equilibrium stress amplitude of the balls 3 (waving) is be performed smoothly circulating the balls 3 by the circulating movement of the connecting plate 2 can, sliding base 20 during running of the rolling, it is possible to improve the accuracy of the pitching and the like.

【0043】なお、図示例では、負荷域の方向転換路においてスペーサ部4とボール3間に隙間gがあるものの、負荷域に入る直前にはスペーサ部4の間隔はボール径と同一となるので隙間はなく、二列のボール3,3は同時に負荷域Lより抜けることになる。 [0043] In the illustrated example, although the load region there is a gap g between the spacer 4 and the ball 3 in the direction changing passage of, so just prior to entering the load region spacing of the spacers 4 is the same as the ball diameter no gap, ball 3, 3 of the two rows will be at the same time escaping from the load range L.

【0044】尚、本発明の複列ボールチェインが適用される直線運動案内装置としては、図示例のように複列ボールチェインを無端状にして用いる無限循環タイプだけでなく、直線のまま使用する有限摺動タイプのものにも使用することができる。 [0044] As the linear motion guide device plural ball row chain of the present invention is applied not only endless circulation type used in the double row ball chain in an endless shape as in the illustrated example, used remain straight it can also be used to those of finite sliding type.

【0045】 [0045]

【発明の効果】本発明は以上の構成および作用を有するもので、二列のボール列の各ボールの間に連結部材に設けたスペーサ部を挿入して、ひとつのボールチェインでもって二列のボール列のボールが保持され、直線運動案内装置の2条の無限循環路内に装着することにより、二条のボール列を一度に組みつけることができる。 The present invention exhibits those having the above structure and operation, by inserting the spacer portion provided in the connecting member between each ball of the ball train in two rows, the two rows with a single ball chain held ball of the ball train, by mounting the Article 2 of endless circulation passage of the linear motion guide device, can be assembled the balls of two articles at a time.

【0046】2条のボールチェインを一体化することにより、ボールが荷重を負荷して転走する接触部分の面積を大きくとることができる。 [0046] By integrating the ball chain 2 Article balls can be increased the area of ​​the contact portion to run the motor at a load.

【0047】二列のボール列間に連結部材を配置することにより、各スペーサ部の連結強度向上を図ることができ、スペーサ部の姿勢および間隔を保持補強することができ、ボールの整列運動に効果的である。 [0047] By disposing the connecting member between the two rows of the ball train, it is possible to reduce the coupling strength improvement of the spacer portion can be held reinforce the orientation and spacing of the spacer portion, the alignment movement of the ball it is effective.

【0048】さらに、二列のボールを並列に配置しておけば、二列のボールが負荷域から無負荷域に同時に抜けるので、ボールの応力振幅が均衡して摺動台の運動姿勢変化がなく、連結部材の循環運動によってボールの循環を円滑に行うことができ、直線運動案内機構の摺動台走行時のローリング,ピッチング等の精度向上を図ることができる。 [0048] In addition, if you place the balls of the two rows in parallel, because the ball of two rows at the same time passing in a no-load area from load region, the sliding table of the exercise posture change in equilibrium stress amplitude of the ball is no, it is possible to smoothly perform the circulation of the ball by the circulating movement of the connecting member, rolling during sliding table travel of the linear motion guide mechanism, it is possible to improve the accuracy of the pitching and the like.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】図1は本発明の一実施例に係る複列ボールチェインを示すもので、同図(a) は部分斜視図、同図(b) は一部破断正面図、同図(c)は平面図、同図(d) は側面断面図、同図(e) 及び(f) はスペーサ部に角度を設けた場合の側面断面図である。 1] Fig. 1 shows a double row ball chain according to an embodiment of the present invention, FIG. (A) is a partial perspective view, and (b) shows partially cutaway front view and FIG. (C ) is a plan view, FIG. (d) are side sectional view, FIG. (e) and (f) is a side sectional view of a case of providing the angle spacer portion.

【図2】図2(a) 〜(c) は図1の複列ボールチェインを曲げた状態の説明図である。 [2] Figure 2 (a) ~ (c) is an explanatory view of a state in which bent double row ball chain of FIG.

【図3】図3は図1の複列ボールチェインのスペーサ部の他の態様を示すもので、同図(a) はだ円形状のスペーサ部の側面図、同図(b) はスペーサ部のさらに他の態様を示す側面図、同図(c) は同図(b) の正面図である。 Figure 3 shows another embodiment of the spacer portion of the plural ball row chain of FIG. 1, FIG. (A) is a side view of the spacer portion of the elliptical shape, FIG. (B) The spacer portion side view showing still another embodiment of FIG. (c) is a front view of FIG. (b).

【図4】図4(a) は図1の複列ボールチェインを組込んだ直線運動案内装置の一例を示す縦断面図、同図(b) は同図(a) の装置の概略斜視図である。 [4] FIG. 4 (a) is a longitudinal sectional view showing an example of the linear motion guide device incorporating a plural ball row chain of FIG. 1, a schematic perspective view of the device of FIG. (B) the figure (a) it is.

【図5】図5は図4の装置の無限循環路の部分断面図である。 Figure 5 is a partial cross-sectional view of the endless circulation path of the device of FIG.

【図6】図6は図4の装置のボール負荷域から無負荷域への動きを説明するための図であり、同図(a) は同図 Figure 6 is a diagram for explaining the movement of the no-load range from the ball load region of the device of FIG. 4, FIG. (A) the drawing
(b) のAーOーA線に沿う模式的断面図、同図(b) は同図(a) の断面位置を示すために図4の装置を模式的に示した部分断面図である。 Schematic sectional view taken along the A-O over A line of (b), FIG. (B) is a partial cross-sectional view schematically showing the apparatus of FIG. 4 to show the cross-sectional position of FIG. (A) .

【図7】図7は図1の複列ボールチェインをダブルゴシックアーチ溝タイプの直線運動案内装置に組み込んだ場合の部分断面図である。 Figure 7 is a partial cross-sectional view of when incorporated into a linear motion guide device of a double Gothic arch groove type double row ball chain of FIG.

【図8】図8(a) はDB構造の直線運動案内装置の一例を示す一部破断半縦断面図、同図(b) はボール循環路の模式図、同図(c) は同図(b) のC−C線断面図、同図 [8] FIG. 8 (a) partially cutaway half longitudinal sectional view showing an example of a linear motion guide device DB structure, FIG. (B) is a schematic view of a ball circulating passage, Fig. (C) the drawing sectional view taken along line C-C of (b), FIG.
(d) は同図(b) のD−D線断面図である。 (D) is a sectional view taken along line D-D in FIG. (B).

【符号の説明】 DESCRIPTION OF SYMBOLS

1 複列ボールチェイン 2 連結部材(連結板) 3 ボール 4 スペーサ部 5 保持凹部 6 連結片 20 軌道台 21 摺動台 22 無限循環路 23 負荷ボール通路 24 無負荷ボール通路 25 ボール方向転換路 1 double row ball chain 2 connecting members (connecting plate) 3 ball 4 spacer section 5 holding recess 6 connecting piece 20 track rail 21 sliding base 22 endless circulation passage 23 loaded ball passage 24 the unloaded ball passage 25 the ball direction changing passage

Claims (2)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】 所定間隔を設けて互いに平行に並べられた二列のボール列の間に可撓性の連結部材を配置し、該連結部材の両側に各ボール列の各ボール間に挿入されるスペーサ部を設けてなることを特徴とする複列ボールチェイン。 1. A place flexible connecting member between the rows of balls two rows which are arranged parallel to each other with a predetermined interval, is inserted between the balls of each ball row on either side of the connecting member plural ball row chain, characterized by comprising providing a that spacer portion.
  2. 【請求項2】二列のボール列は並列である請求項1に記載の複列ボールチェイン。 2. A ball train of two rows plural ball row chain according to claim 1 in parallel.
JP31521391A 1991-11-05 1991-11-05 Fukuretsubo - Ruchein Expired - Lifetime JPH0672610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31521391A JPH0672610B2 (en) 1991-11-05 1991-11-05 Fukuretsubo - Ruchein

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31521391A JPH0672610B2 (en) 1991-11-05 1991-11-05 Fukuretsubo - Ruchein

Publications (2)

Publication Number Publication Date
JPH05126149A true true JPH05126149A (en) 1993-05-21
JPH0672610B2 JPH0672610B2 (en) 1994-09-14

Family

ID=18062764

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Application Number Title Priority Date Filing Date
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Country Link
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WO1997048913A1 (en) * 1996-06-18 1997-12-24 Thk Co., Ltd. Linear motion guide apparatus equipped with a plurality of rows of ball chains
WO1997049931A1 (en) 1996-06-27 1997-12-31 Thk Co., Ltd. Slide guide and its roller chain with ends
WO1998028549A1 (en) 1996-12-24 1998-07-02 Thk Co., Ltd. Endless retainer for a guiding device and method for manufacturing the same
EP0893612A2 (en) * 1997-07-18 1999-01-27 Thk Co., Ltd. Ball connecting body and ball screw apparatus using the same
EP0989314A1 (en) * 1998-04-09 2000-03-29 Thk Co., Ltd. Roller connected body and linear guide device using it
US6364086B1 (en) 1998-05-29 2002-04-02 Rexroth Star Gmbh Chain of rolling elements chain arrangement
GB2380773A (en) * 2001-08-07 2003-04-16 Thk Co Ltd Rolling element interference preventer and guide device
US6575630B2 (en) 2001-02-01 2003-06-10 Rexroth Star Gmbh Rolling element chain
US6663285B2 (en) * 2000-01-13 2003-12-16 Nsk Ltd. Linear guide bearing apparatus
US6808309B2 (en) * 2000-02-09 2004-10-26 Ina Walzlager Schaeffler Ohg Linear rolling bearing
CN1306179C (en) * 2002-03-07 2007-03-21 Ina-谢夫勒两合公司 Linear rolling bearing
EP1953401A2 (en) 2001-11-05 2008-08-06 Schaeffler KG Guiding wagon for profile rail guides
WO2009028328A1 (en) * 2007-08-30 2009-03-05 Thk Co., Ltd. Direct-acting guide device
US7513687B2 (en) * 2002-08-03 2009-04-07 Ina-Schaeffler Kg Linear rolling bearing
EP2702286B1 (en) * 2011-04-29 2016-12-14 Aktiebolaget SKF Rolling bearing cage, rolling element retaining bracket and rolling element holding fixture

Cited By (27)

* Cited by examiner, † Cited by third party
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US5947605A (en) * 1996-06-18 1999-09-07 Thk Co., Ltd. Linear motion guide apparatus equipped with a plurality of rows of ball chains
WO1997048913A1 (en) * 1996-06-18 1997-12-24 Thk Co., Ltd. Linear motion guide apparatus equipped with a plurality of rows of ball chains
WO1997049931A1 (en) 1996-06-27 1997-12-31 Thk Co., Ltd. Slide guide and its roller chain with ends
US6155718A (en) * 1996-06-27 2000-12-05 Thk Co., Ltd. Slide guide and its roller chain with ends
WO1998028549A1 (en) 1996-12-24 1998-07-02 Thk Co., Ltd. Endless retainer for a guiding device and method for manufacturing the same
US5988883A (en) * 1996-12-24 1999-11-23 Thk Co., Ltd. Endless retainer of guide device and fabrication method thereof
EP0893612A3 (en) * 1997-07-18 1999-06-30 Thk Co., Ltd. Ball connecting body and ball screw apparatus using the same
EP0893612A2 (en) * 1997-07-18 1999-01-27 Thk Co., Ltd. Ball connecting body and ball screw apparatus using the same
EP0989314A1 (en) * 1998-04-09 2000-03-29 Thk Co., Ltd. Roller connected body and linear guide device using it
EP0989314A4 (en) * 1998-04-09 2003-03-05 Thk Co Ltd Roller connected body and linear guide device using it
US6364086B1 (en) 1998-05-29 2002-04-02 Rexroth Star Gmbh Chain of rolling elements chain arrangement
US7014364B2 (en) 2000-01-13 2006-03-21 Nsk, Ltd. Linear guide bearing apparatus
US6890103B2 (en) 2000-01-13 2005-05-10 Nsk Ltd. Linear guide bearing apparatus
US6663285B2 (en) * 2000-01-13 2003-12-16 Nsk Ltd. Linear guide bearing apparatus
US6808309B2 (en) * 2000-02-09 2004-10-26 Ina Walzlager Schaeffler Ohg Linear rolling bearing
US6575630B2 (en) 2001-02-01 2003-06-10 Rexroth Star Gmbh Rolling element chain
US6733179B2 (en) 2001-08-07 2004-05-11 Thk Co., Ltd. Rolling element interference preventer and a guide device
US6892596B2 (en) 2001-08-07 2005-05-17 Ghk Co., Ltd. Rolling element interference preventer and a guide device
GB2380773B (en) * 2001-08-07 2005-05-25 Thk Co Ltd Rolling element interference preventer and a guide device
GB2380773A (en) * 2001-08-07 2003-04-16 Thk Co Ltd Rolling element interference preventer and guide device
EP1953401A3 (en) * 2001-11-05 2008-08-13 Schaeffler KG Guiding wagon for profile rail guides
EP1953401A2 (en) 2001-11-05 2008-08-06 Schaeffler KG Guiding wagon for profile rail guides
CN1306179C (en) * 2002-03-07 2007-03-21 Ina-谢夫勒两合公司 Linear rolling bearing
US7513687B2 (en) * 2002-08-03 2009-04-07 Ina-Schaeffler Kg Linear rolling bearing
WO2009028328A1 (en) * 2007-08-30 2009-03-05 Thk Co., Ltd. Direct-acting guide device
JP5386356B2 (en) * 2007-08-30 2014-01-15 Thk株式会社 Linear guide apparatus
EP2702286B1 (en) * 2011-04-29 2016-12-14 Aktiebolaget SKF Rolling bearing cage, rolling element retaining bracket and rolling element holding fixture

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