JPS62155325A - Linear bearing device - Google Patents
Linear bearing deviceInfo
- Publication number
- JPS62155325A JPS62155325A JP29328685A JP29328685A JPS62155325A JP S62155325 A JPS62155325 A JP S62155325A JP 29328685 A JP29328685 A JP 29328685A JP 29328685 A JP29328685 A JP 29328685A JP S62155325 A JPS62155325 A JP S62155325A
- Authority
- JP
- Japan
- Prior art keywords
- retainer
- linear bearing
- bearing device
- movement
- cable member
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
- F16C33/306—Means to synchronise movements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は一対の相対移動体の円滑、精密移動を可能にす
るリニアベアリング装置に関し、特にリテーナで保持し
た転動体と移動体間の移動量の不整合時にリテーナに進
行方向の引張力が付与されて直ちに整合復帰を図るよう
に改善したリニアベアリング装置に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a linear bearing device that enables smooth and precise movement of a pair of relative moving bodies, and in particular to a linear bearing device that enables smooth and precise movement of a pair of relatively moving bodies, and in particular, the amount of movement between a rolling body held by a retainer and a moving body. The present invention relates to a linear bearing device that is improved so that when a retainer is misaligned, a tensile force in the advancing direction is applied to the retainer to immediately restore alignment.
従来から工作機械のワークテーブルや精密測定機械のワ
ーク載台等の直線移動機構部にリニアベアリング装置が
用いられており、リテーナに保持される転動体としては
ボール、コロが使用されている。このような転動体を一
対の相対移動体の間に介在させて相対移動の円滑案内を
図ると、移動体の移動量りに対して転動体とリテーナの
移動量ｌとの間には理想的には２：１の関係が成立ち、
転動体は初期設定位置を中心として移動体の動作に追従
することは公知である。然しなから、このようなリニア
ベアリング装置を機械に実用すると転動体の位置にずれ
が生じる不都合を回避できず、このためにストッパを設
けて転動体及びリテーナがずれると、やがてこのストッ
パに当接することにより、はずれ防止を図り、或いは転
動体を初期位置に復帰させるようにしていたが、当接時
の衝撃が精密測定機械等では誤差発生の要因となる等を
考慮して改善を施したものが、特開昭５５−５１１１９
号或いは特開昭５６−１１３８２４号に夫々リニアベア
リング装置又はリニアベアリングとして開示されている
。前者のものは第２図（Ａ）に示すように移動体１ａ、
ｌｂ間に挟持したリテーナ２またはそのリテーナ２に保
持された転動体３をばね４等の弾性部材で押さえる構成
にしてリテーナ２のずれが発生すると、ばね４のカにリ
テーナ２の前後で差を生じ、元の位置に復帰させるよう
にすることでストッパを排除した構造にしている。Linear bearing devices have conventionally been used in linear movement mechanisms such as work tables of machine tools and work platforms of precision measuring machines, and balls and rollers have been used as rolling elements held in retainers. If such a rolling element is interposed between a pair of relatively moving bodies to ensure smooth relative movement guidance, there will be an ideal difference between the amount of movement l of the rolling element and the retainer relative to the amount of movement of the moving body. A 2:1 relationship is established,
It is known that the rolling element follows the movement of the moving body around an initial setting position. However, if such a linear bearing device is used in a machine, it is impossible to avoid the inconvenience of misalignment of the rolling elements, and for this reason, a stopper is provided, and if the rolling elements and retainer become misaligned, they will eventually come into contact with this stopper. This method was designed to prevent the rolling elements from coming off or to return the rolling elements to their initial positions, but improvements have been made in consideration of the fact that the impact caused by contact can cause errors in precision measuring instruments, etc. However, JP-A-55-51119
This invention is disclosed as a linear bearing device or a linear bearing in Japanese Patent Laid-Open No. 56-113824, respectively. The former is a moving body 1a, as shown in FIG. 2(A).
If the retainer 2 held between the lbs and the rolling elements 3 held by the retainer 2 are held down by an elastic member such as a spring 4, and the retainer 2 shifts, the force of the spring 4 will be different between the front and rear of the retainer 2. The structure eliminates the need for a stopper by allowing the stopper to return to its original position.
他方、後者のものは第２図（Ｂ）に示すように同じ（一
対の移動体１ａ、ｌｂ間にリテーナ２で保持した転動体
３を設け、リテーナ２の両端にプーリ５を夫々取り付け
、そのプーリ５を介して２つの移動体１ａ、ｌｂをベル
ト６で接続し、プーリ５及びベルト６によりリテーナ２
の動きを移動体の動きの２に規制する構造としている。On the other hand, the latter is the same as shown in FIG. The two movable bodies 1a and lb are connected by a belt 6 via a pulley 5, and the retainer 2 is connected by the pulley 5 and the belt 6.
The structure is such that the movement of the moving body is restricted to the movement of the moving body.
つまり、ずれが発生すると、ベルト６、プーリ５を介し
てリテーナ２に押力がおよぶように形成され、リテーナ
２、転動体３を元の位置に戻すようにするものである。That is, when a shift occurs, a pressing force is applied to the retainer 2 via the belt 6 and pulley 5, and the retainer 2 and rolling elements 3 are returned to their original positions.
然しなから、前者のものは、ばねのみに復帰力を依存す
るものであり、高精度の送り機構に用いると、送り精度
、位置決め精度において、不完全さがあり、また後者の
ものでは、リテーナ２のずれ補正力を押力に依存するか
ら、荷重状態における移動等では、リテーナ２にこじれ
や捩れが生じ、円滑な動きが要求される精密測定機械の
直線移動数構等では測定誤差の要因が依然として解消し
えないという不具合がある。依って、本発明はこのよう
な不具合を解消して高い送り精度、位置決め精度を要す
る機械にも適用できるリニアベアリング装置を提供せん
とするものである。However, the former method relies only on the spring for return force, and when used in a high-precision feed mechanism, there are imperfections in feed accuracy and positioning accuracy. Since the displacement correction force of 2 is dependent on the pushing force, the retainer 2 may be twisted or twisted when moving under load, which can cause measurement errors in the linear movement of precision measuring instruments that require smooth movement. There is still a problem that cannot be resolved. Therefore, it is an object of the present invention to provide a linear bearing device that can solve these problems and can be applied to machines that require high feed accuracy and positioning accuracy.
上述の発明目的に鑑みて、本発明はリテーナの前方を進
行方向沿いに引張力で移動体の移動量に整合追従するよ
うに引くようにしているもので、リテーナにこじれや捩
れが生ずることなく常に移動体との移動関係を２：１の
理想関係を保持させうる構成２作用としたもので、すな
わち、本発明によると、リテーナに保持された転動体を
挟持して相対的に直線移動可能な一対の移動体を備えた
リニアベアリング装置において、前記一対の移動体の一
方の移動体に同軸に取り付けた直径比２＝１で連動回転
する大小の車輪と、前記他方の移動体の進行方向二点間
に前記大車輪と伝動係合されるように張設した第一の索
条部材と、前記リテーナの両端間とループをなし前記小
車輪と伝動係合されるように張設した第二の索条部材と
を具備して構成され、前記転動体を保持したリテーナの
移動量と前記移動体の移動量との不整合時に該リテーナ
に引張力を付与するようにしたことを特徴とするリニア
ベアリング装置が提供されるものである。In view of the above-mentioned object of the invention, the present invention is designed to pull the front side of the retainer along the traveling direction with a tensile force so as to match and follow the amount of movement of the moving object, without causing any twisting or twisting of the retainer. The structure has two functions that can always maintain an ideal movement relationship of 2:1 with the moving body, that is, according to the present invention, the rolling body held by the retainer can be held and relatively linearly moved. In a linear bearing device comprising a pair of moving bodies, large and small wheels coaxially attached to one of the pair of moving bodies rotate in conjunction with a diameter ratio of 2=1, and a traveling direction of the other moving body. A first cable member is stretched between two points so as to be in transmission engagement with the large wheel, and a first cable member is stretched between both ends of the retainer so as to be in transmission engagement with the small wheel. and a second cable member, and is configured to apply a tensile force to the retainer when the amount of movement of the retainer holding the rolling element and the amount of movement of the moving body do not match. A linear bearing device is provided.
以下、本発明を添付第１図に示す実施例に基づいて詳細
に説明する。Hereinafter, the present invention will be explained in detail based on an embodiment shown in the attached FIG.
さて、第１Ａ図および第１Ｂ図は何れも本発明の実施例
に係るリニアベアリング装置で、第１Ａ図の状態から移
動体間に相対直線移動を生じた状態が第１Ｂ図である。Now, FIG. 1A and FIG. 1B both show a linear bearing device according to an embodiment of the present invention, and FIG. 1B shows a state in which relative linear movement has occurred between the movable bodies from the state shown in FIG. 1A.
本実施例に依れば、リニアベアリング装置１０は２つの
相対移動体１２ａ、 １２ｂを育し、例えば移動体１２
ａは工作機械の摺動テーブルであり、移動体１２ｂは摺
動テーブルのガイド基台から成るもので、その他精密測
定機械におけるワーク載台を移動体１２ａ、スケールを
有した基台は移動体１２ｂと見なすことができる。これ
ら円移動体１２ａ、１２ｂの間にはりテーナ１４に依っ
て保持されたボール又はコロ等からなる転動体１６が挟
持されており、円移動体１２ａ、１２ｂの相対直線移動
における左右へのストローク量に従ってリテーナ１４及
び転動体１６からなる転動部は進行方向における適当な
位置に予め設定配置される。According to this embodiment, the linear bearing device 10 grows two relatively moving bodies 12a, 12b, for example, the moving body 12
A is a sliding table of a machine tool, a moving body 12b is a guide base of the sliding table, a moving body 12a is a workpiece mounting table in a precision measuring machine, and a moving body 12b is a base with a scale. It can be considered as A rolling element 16 such as a ball or roller held by a beam retainer 14 is sandwiched between these circular moving bodies 12a and 12b, and the stroke amount to the left and right in the relative linear movement of the circular moving bodies 12a and 12b is Accordingly, the rolling portion consisting of the retainer 14 and the rolling elements 16 is preset and arranged at an appropriate position in the traveling direction.
例えば移動体１２ａ、１２ｂの左、右方向への相対移動
量が等量であれば、上記転勤部は円移動体１２ａ。For example, if the relative movements of the moving bodies 12a and 12b in the left and right directions are equal, the transfer section is the circular moving body 12a.
１２ｂが進行方向にずれなく、前後を合せた状態で、ち
ょうど両端間の略中央部に配置しておけば、左右の対称
が得られる。さて、本実施例では、下部の移動体１２ｂ
の進行方向における略中央部の軸１８上に同軸に取付け
た一組の大小の車輪２０ 、２２が両者同時に一体とな
って回転するように設けられており、これら大小の車輪
２０ 、２２の直径は２：１の比率となるように予め正
確に設計、工作されている。なお、車輪２０ 、２２は
実際には大小のスプロケット車によって形成され、後述
する索条部材を形成するチェーンと伝動係合させられ、
その際には、上記大小の直径比はスプロケット車のピッ
チ円径比と考えればよい。If 12b is not displaced in the direction of travel and is placed approximately in the center between both ends with the front and back together, then left-right symmetry can be obtained. Now, in this embodiment, the lower moving body 12b
A pair of large and small wheels 20 and 22 are coaxially mounted on a shaft 18 at a substantially central portion in the direction of movement of the vehicle, and are provided so as to simultaneously rotate together. is precisely designed and manufactured in advance to have a 2:1 ratio. Note that the wheels 20 and 22 are actually formed by large and small sprocket wheels, and are transmission engaged with a chain forming a cable member to be described later.
In that case, the above-mentioned large/small diameter ratio may be considered as the pitch circle diameter ratio of the sprocket wheel.
上部の移動体１２ａの進行方向における両端には、その
移動体１２ａの進行を妨げない側方よりの位置に前、
ｆ＆のブラケット２４ａ、２４ｂが一体形成又は取付固
定によって設けられており、これらブラケット２４ａ、
２４ｂは上記の大きな車輪ないしスプロケット車２０に
係合するチェーン２６を索条部材として進行方向に一致
させて張設、保持している。At both ends of the upper movable body 12a in the direction of movement, there are front and rear plates located at lateral positions that do not impede the movement of the movable body 12a.
Brackets 24a and 24b of f& are provided by integrally forming or fixedly attached, and these brackets 24a,
24b is a chain 26 that engages with the large wheel or sprocket wheel 20, and is stretched and held as a cable member in alignment with the traveling direction.
他方、転勤部のりテーナ１４における進行方向の両端に
はワイヤ２８ａ、２８ｂが係止され、これらのワイヤ２
８ａ、２８ｂは下部移動体１２ｂから進行方向の前後に
突出させた腕３０ａ、３０ｂの夫々の先端に枢着保持さ
れたプーリ３２ 、３４ 、３６ 、３８に巻回、案内
されてループ形状に下方に回り込み、次いで左、右一対
のばね４０ 、４２を経てチェーン４４に接続され、こ
のチェーン４４が前述のチェーン２６の場合と同様にこ
んどは小径側の車輪ないしスプロケット２２に係合され
ている。On the other hand, wires 28a and 28b are locked at both ends of the transfer section glue retainer 14 in the advancing direction, and these wires 2
8a and 28b are wound and guided around pulleys 32, 34, 36, and 38 which are pivotally held at the ends of arms 30a and 30b that project forward and backward in the direction of movement from the lower moving body 12b, and are guided downward in a loop shape. It is then connected to a chain 44 via a pair of left and right springs 40 and 42, and this chain 44 is now engaged with the smaller diameter wheel or sprocket 22, as in the case of the chain 26 described above.
上述した構成を有したリニアベアリング装置ＩＯの作用
を次に説明する。The operation of the linear bearing device IO having the above-described configuration will be explained next.
いま、第１Ａ図に示された状態にある一対の移動体１２
ａ、１２ｂにおいて、上部の移動体１２ａが移動力を受
けて左方に直線移動することにより、下部の移動体１２
ｂとの間に相対直線移動を行うと、第１Ｂ図で示した位
置、状態に達する。この間に例えば、相対直線移動量が
Ｌであるとすれば、この間にリテーナ１４と転動体１６
とからなる転勤部は理論的には同方向に移動量Ｌ／２に
亘って移動することになる。このとき、上部移動体１２
ａの移動に伴ってチェーン２６も同方向に移動し、故に
それと伝動係合した大径のスプロケット車２０を一定回
転角度だけ回動させる。他方、リテーナ１４と転動体１
Ｇとからなる転動部の移動に伴ってループ形状をなすワ
イヤ２８ａ、２８ｂ、ばね４０゜４２、チェーン４４か
らなる索条部材もプーリ３２゜３４ 、３６ 、３８を
介して移動し、このとき、小径のスプロケット２２に伝
動係合したチェーン４４によって該小径のスプロケット
車２２も大径のスプロケット車２０と同回転角だけ同方
向に回動せしめられることになる。このとき、大小のス
プロケット車２０ 、２２は共に一体となって回動する
ように同軸１８上に設けられた一定の運動関係に拘束さ
れているから、円移動体１２ａ、１２ｂの相対直線移動
の移動ＩＬに対して従動する転動部の移動量が％Ｌに達
しない不整合状態が生ずると、小径スプロケット車２２
に係合したチェーン４４を有するループ索条部材側にお
いて、ばね４０に伸びが生じ、このばね４０の伸張によ
って生ずるばね力がリテーナ端で進行方向におき引張力
として作用し、リテーナ１４、転動体１６からなる転勤
部を’ＡＬに不足する移動量分だけ引き寄せるように作
用する。同様に円移動体１２ａ、１２ｂの相対直線移動
が第１Ｂ図の状態から第１Ａ図の状態に向けて右方向に
行なわれる際に転動部に上述と同様の移動量のずれが生
ずると、こんどはばね４２の伸張によるばね力が生じて
、リテーナ１４、転動体１６に引張力を及ぼし、移動ず
れを解消させるように作用する。A pair of moving bodies 12 are now in the state shown in FIG. 1A.
a, 12b, the upper moving body 12a receives the moving force and moves linearly to the left, so that the lower moving body 12
When a relative linear movement is performed between the point and the point b, the position and state shown in FIG. 1B are reached. For example, if the relative linear movement amount is L during this period, the retainer 14 and the rolling elements 16
Theoretically, the transfer unit consisting of the above would move in the same direction over a movement distance L/2. At this time, the upper moving body 12
With the movement of a, the chain 26 also moves in the same direction, thus rotating the large-diameter sprocket wheel 20 that is transmission-engaged therewith by a certain rotation angle. On the other hand, the retainer 14 and the rolling elements 1
As the rolling part consisting of G moves, the cable member consisting of loop-shaped wires 28a, 28b, spring 40゜42, and chain 44 also moves via pulleys 32゜34, 36, 38. The small-diameter sprocket wheel 22 is also rotated in the same direction by the same rotation angle as the large-diameter sprocket wheel 20 by the chain 44 that is transmission-engaged with the small-diameter sprocket wheel 22. At this time, since the large and small sprocket wheels 20 and 22 are constrained by a fixed motion relationship provided on the same axis 18 so that they rotate together, the relative linear movement of the circular moving bodies 12a and 12b is controlled. If a misalignment occurs in which the amount of movement of the driven rolling part with respect to the movement IL does not reach %L, the small diameter sprocket wheel 22
On the side of the loop cable member having the chain 44 engaged with the spring 40, the spring 40 is stretched, and the spring force generated by the stretch of the spring 40 acts as a tensile force in the advancing direction at the end of the retainer, causing the retainer 14 and the rolling elements to It acts to pull the transfer section consisting of 16 by the amount of movement that is insufficient to 'AL. Similarly, when the relative linear movement of the circular moving bodies 12a and 12b is performed in the right direction from the state shown in FIG. 1B to the state shown in FIG. This time, a spring force is generated due to the extension of the spring 42, which exerts a tensile force on the retainer 14 and the rolling elements 16, and acts to eliminate the displacement.
以上に説明の如く、本発明はリニアベアリング装置にお
いて、移動体１２ａ、１２ｂの相対直線移動に対してリ
テーナ１４で保持された転動体１６を有する転動部に移
動ずれが生ずると、その移動ずれを引張力の作用で進行
方向に引き寄せて復帰させる補正作用を付与させるよう
にしたものである。As described above, the present invention provides a linear bearing device in which when a displacement occurs in the rolling portion having the rolling elements 16 held by the retainer 14 with respect to the relative linear movement of the movable bodies 12a and 12b, the displacement occurs. It is designed to provide a corrective action of pulling the object in the direction of travel and returning it by the action of a tensile force.
上述の作用説明で明らかにしたように、リテーナと転動
体とからなる転動部は進行方向に引張力によって移動体
の移動量に対し、Ａ移動量となる補正作用が及ぶように
し、しかも直径比２：１の大小車輪の連動回転で常に移
動ずれを補正せしめる引張力を発生せしめるようにして
いるからりチーすは常に移動体との間で正規の関係を維
持し、しかも引張作用による移動量の補正作用であるか
らリテーナには無理な偏荷重等を及ばずことな（、究極
的に高精度の安定した直線移動を行うリニアベアリング
装置が得られるという効果がある。As clarified in the explanation of the operation above, the rolling part consisting of the retainer and the rolling elements is designed to exert a corrective action on the movement amount of the moving body by a tensile force in the direction of movement, resulting in the movement amount A, and furthermore, the diameter The wheels are designed to constantly generate a tensile force that corrects misalignment through the interlocking rotation of large and small wheels with a ratio of 2:1.The wheels always maintain a normal relationship with the moving object, and are able to move due to the tensile action. Since it is a correction effect of the amount, there is no unreasonable eccentric load applied to the retainer (ultimately, a linear bearing device that can perform stable linear movement with high precision can be obtained).
第１Ａ図、第１Ｂ図は本発明によるリニアベアリング装
置の構成と作用とを説明する正面図、第２Ａ図、第２Ｂ
図は従来のリニアヘアリング装置の例を示した正面図。
１０・・・リニアベアリング装置、
１２ａ、 １２ｂ・・・移動体、 １４・・・リテ
ーナ、１６・・・転動体、
２０ 、２２・・・大小スプロケット車又は車輪、２６
．４４・・・チェーン、 ２８ａ、 ２８ｂ−ワイヤ
、４０ 、４２・・・ばね。
箋２Ａ １図
ｂ
手続補正書（方式）
昭和６１年４月ε 日
特許庁長官 宇 賀 道 部 殿
１、事件の表示
昭和６０年特許願第２９３２８６号
２、発明の名称
リニアベアリング装置
３、補正をする者
事件との関係 特許出願人
名称 株式会社牧野フライス製作所
４、代 埋入
住所 〒１０５東京都港区虎ノ門−丁目８番１０号５、
補正命令の日付
昭和６１年３月２５日（発送日）
６、補正の対象
（１） 明細書
７、補正の内容
（１）明細書の浄書（内容に変更なし）８、添付書類の
目録
（１）明細書（浄＊） １通手続補正書（
自発）
昭和６１年５月２３日
特許庁長官 宇 賀 道 部 殿
１、事件の表示
昭和６０年特許願第２９３２８６号
２、発明の名称
リニアベアリング装置
３、 補正をする者
事件との関係 特許出願人
名称 株式会社 牧野フライス製作所
４、代理人
住所 〒１０５東京都港区虎ノ門−丁目８番１０号５、
補正の対象
図面（第１図、第２図）
６、補正の内容
図面を別紙のように補正しま、す。
７、添付書類の目録
補正図面（第１図、第２図） １通１ｂ
第２８図FIGS. 1A and 1B are a front view, FIGS. 2A and 2B, illustrating the structure and operation of the linear bearing device according to the present invention.
The figure is a front view showing an example of a conventional linear hair ring device. DESCRIPTION OF SYMBOLS 10... Linear bearing device, 12a, 12b... Moving body, 14... Retainer, 16... Rolling element, 20, 22... Large and small sprocket car or wheel, 26
．． 44...Chain, 28a, 28b-wire, 40, 42...Spring. Note 2A 1 Figure b Procedural amendment (method) April 1986 ε Date Commissioner of the Patent Office Michibu Uga 1, Indication of the case 1985 Patent Application No. 293286 2, Name of the invention Linear bearing device 3, Amendment Relationship with the case of a person who does
Date of amendment order: March 25, 1985 (shipment date) 6. Subject of amendment (1) Specification 7. Contents of amendment (1) Engraving of specification (no change in content) 8. List of attached documents ( 1) Specification (clean *) 1 copy of procedural amendment (
Spontaneous) May 23, 1985 Michibe Uga, Commissioner of the Patent Office1, Indication of the case 1985 Patent Application No. 2932862, Name of the invention Linear Bearing Device 3, Relationship with the person making the amendment Patent application Person name: Makino Milling Seisakusho Co., Ltd. 4, Agent address: 8-10-5 Toranomon-chome, Minato-ku, Tokyo 105
Drawings to be corrected (Figures 1 and 2) 6. Details of correction The drawings will be corrected as shown in the attached sheet. 7. Attached document catalog correction drawings (Figures 1 and 2) 1 copy 1b Figure 28
Claims (1)
線移動可能な一対の移動体を備えたリニアベアリング装
置において、前記一対の移動体の一方の移動体に同軸に
取り付けた直径比２：１で連動回転する大小の車輪と、
前記他方の移動体の進行方向二点間に前記大車輪と伝動
係合されるように張設した第一の索条部材と、前記リテ
ーナの両端間とループをなし前記小車輪と伝動係合され
るように張設した第二の索条部材とを具備して構成され
、前記転動体を保持したリテーナの移動量と前記移動体
の移動量との不整合時に該リテーナに引張力を付与する
ようにしたことを特徴とするリニアベアリング装置。 ２、前記大小車輪をチェーンスプロケットで夫々形成し
かつ前記第一索条部材をチェーンでまた前記第二索条部
材をチェーン、ワイヤ、ばねの連結体で形成してなる特
許請求の範囲第１項に記載のリニアベアリング装置。 ３、前記大小車輪は前記他方の移動体の進行方向長さの
略中央部に軸支されている特許請求の範囲第１項または
第２項に記載のリニアベアリング装置。 ４、前記第二の索条部材は前記他方の移動体に設けたプ
ーリを迂回することによりループを成す特許請求の範囲
第１項〜第３項の何れか１項に記載のリニアベアリング
装置。[Scope of Claims] 1. In a linear bearing device comprising a pair of movable bodies that can move relatively linearly while sandwiching a rolling body held in a retainer, a linear bearing device that is coaxial with one of the pair of movable bodies; Large and small wheels that rotate in conjunction with a diameter ratio of 2:1 attached to the
a first cable member stretched between two points in the traveling direction of the other moving body so as to be in transmission engagement with the large wheel; and a first cable member that forms a loop between both ends of the retainer and is in transmission engagement with the small wheel. and a second cable member stretched so as to apply a tensile force to the retainer when the amount of movement of the retainer holding the rolling element and the amount of movement of the moving body do not match. A linear bearing device characterized by: 2. Claim 1, wherein the large and small wheels are formed by chain sprockets, the first cable member is a chain, and the second cable member is a connected body of a chain, a wire, and a spring. The linear bearing device described in . 3. The linear bearing device according to claim 1 or 2, wherein the large and small wheels are pivotally supported approximately at the center of the length of the other moving body in the traveling direction. 4. The linear bearing device according to any one of claims 1 to 3, wherein the second cable member forms a loop by bypassing a pulley provided on the other movable body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29328685A JPS62155325A (en) | 1985-12-27 | 1985-12-27 | Linear bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29328685A JPS62155325A (en) | 1985-12-27 | 1985-12-27 | Linear bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62155325A true JPS62155325A (en) | 1987-07-10 |
| JPH0154572B2 JPH0154572B2 (en) | 1989-11-20 |
Family
ID=17792864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29328685A Granted JPS62155325A (en) | 1985-12-27 | 1985-12-27 | Linear bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62155325A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5180230A (en) * | 1991-06-12 | 1993-01-19 | Etec Systems, Inc. | Rolling element cage constraint |
| JP2007107650A (en) * | 2005-10-14 | 2007-04-26 | Toshiba Mach Co Ltd | Retainer deviation preventing device for finite roller bearing |
| JP2008106863A (en) * | 2006-10-26 | 2008-05-08 | Toshiba Mach Co Ltd | Position displacement prevention device of retainer |
-
1985
- 1985-12-27 JP JP29328685A patent/JPS62155325A/en active Granted
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5180230A (en) * | 1991-06-12 | 1993-01-19 | Etec Systems, Inc. | Rolling element cage constraint |
| JP2007107650A (en) * | 2005-10-14 | 2007-04-26 | Toshiba Mach Co Ltd | Retainer deviation preventing device for finite roller bearing |
| JP4721862B2 (en) * | 2005-10-14 | 2011-07-13 | 東芝機械株式会社 | Device for preventing cage slippage of finite roller bearing |
| JP2008106863A (en) * | 2006-10-26 | 2008-05-08 | Toshiba Mach Co Ltd | Position displacement prevention device of retainer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0154572B2 (en) | 1989-11-20 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |