JP4721862B2 - Device for preventing cage slippage of finite roller bearing - Google Patents

Device for preventing cage slippage of finite roller bearing Download PDF

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JP4721862B2
JP4721862B2 JP2005300250A JP2005300250A JP4721862B2 JP 4721862 B2 JP4721862 B2 JP 4721862B2 JP 2005300250 A JP2005300250 A JP 2005300250A JP 2005300250 A JP2005300250 A JP 2005300250A JP 4721862 B2 JP4721862 B2 JP 4721862B2
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cage
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wire take
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JP2007107650A (en
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浩 内村
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Shibaura Machine Co Ltd
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Toshiba Machine Co Ltd
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Description

この発明は、有限コロ軸受の保持器ずれ防止装置に関し、特に、工作機械や半導体製造装置の直線移動テーブル、直線移動ステージ等のスライダ装置における有限コロ軸受の保持器ずれ防止装置に関するものである。   The present invention relates to a cage displacement prevention device for a finite roller bearing, and more particularly to a cage displacement prevention device for a finite roller bearing in a slider device such as a linear movement table or a linear movement stage of a machine tool or a semiconductor manufacturing apparatus.

可動ワークテーブル等の移動体が固定ベッド等の固定体の案内面に沿って直線移動するスライダ装置において、前記移動体のころがり案内として、複数個のコロが保持器（リテーナ）によって保持されたコロ非循環式の有限コロ軸受を用いたものがある。 In slider device moving body such as a movable work table is linearly moved along the guide surface of the fixed body such as a fixed base head, as rolling guide of the movable body, a plurality of rollers are held by a retainer (retainer) Some use non-circulating finite roller bearings.

コロ非循環式の有限コロ軸受は、移動体の移動に伴うコロの転動によって保持器が、移動体の移動方向と同方向に、理論上は、移動体の移動量の１／２の移動量をもって移動する。   Roller non-circulating type finite roller bearings have the cage move in the same direction as the moving body by the rolling of the roller as the moving body moves, theoretically moving half the moving amount of the moving body. Move with quantity.

しかし、実際には、コロの転動摩擦によってコロと移動体との間で僅かな滑りが生じ、移動体の移動が繰り返されることにより、移動体と保持器との間に相対的な位置ずれが生じる。   However, in reality, a slight slip occurs between the roller and the moving body due to the rolling friction of the roller, and the relative displacement between the moving body and the cage is caused by repeated movement of the moving body. Arise.

このことに対して、ストロークエンドにおいて、移動体の移動によって有限コロ軸受の保持器をストッパに押し当てることにより、保持器の位置ずれを解消するものがある（例えば、特許文献１、２、３）。   On the other hand, at the stroke end, there is one that eliminates the positional deviation of the cage by pressing the cage of the finite roller bearing against the stopper by moving the moving body (for example, Patent Documents 1, 2, and 3). ).

また、有限コロ軸受の保持器を、送りねじによって移動体の送り速度の１／２の送り速度で、移動体の移動方向に同方向に強制移動させ、保持器の位置ずれが生じないようにしたものがある（例えば、特許文献４）。
特開平５−１９８４６９号公報 特開平７−２４５２６０号公報 特開平８−３１８２０４号公報 特開２００４−１１６５９２号公報 In addition, the cage of the finite roller bearing is forcibly moved in the same direction in the moving direction of the moving body at a feed speed of 1/2 of the moving speed of the moving body with a feed screw so that the positional deviation of the cage does not occur. (For example, Patent Document 4).
JP-A-5-198469 JP 7-245260 A JP-A-8-318204 JP 2004-116592 A

有限コロ軸受の保持器をストッパに押し当てることにより、保持器の位置ずれを解消するのは、保持器をストッパに押し当てる衝撃により、保持器が変形し、有限コロ軸受の機能低下の問題がある。特に、移動体が重い場合には、顕著になり、位置ずれ修正時には、移動体を有限コロ軸受より浮上させる持ち上げ手段等を付加する必要が生じる。   The positional displacement of the cage is eliminated by pressing the cage of the finite roller bearing against the stopper. The cage is deformed by the impact of pressing the cage against the stopper, and the function of the finite roller bearing is degraded. is there. In particular, it becomes remarkable when the moving body is heavy, and it is necessary to add a lifting means or the like for floating the moving body from the finite roller bearing when correcting the positional deviation.

送りねじによって有限コロ軸受の保持器を強制移動させるものは、保持器の変形による有限コロ軸受の機能低下の問題を生じることがないが、移動体移動用の送りねじとは別に、保持器移動用の送りねじが必要になり、構造が複雑になる。 Which forcibly move the retainer finite roller bearing by the feed screw, but does not cause a problem of degraded finite roller bearing due to deformation of the cage, apart from the feed screw for mobile moves, the retainer moves A feed screw is required and the structure is complicated.

また、保持器移動用の送りねじと移動体移動用の送りねじとを歯車列によって駆動連結し、保持器移動用の送りねじを移動体の送り駆動用のサーボモータによって回転駆動すると、移動体送り駆動用のサーボモータの負荷が大きくなる。また、この構成は、リニアモータ駆動等、移動体の移動に、送りねじを用いないスライダ装置には適用できない。   Further, when the feed screw for moving the cage and the feed screw for moving the moving body are driven and connected by a gear train, and the feed screw for moving the cage is rotationally driven by a servo motor for driving the moving body, the moving body The load on the servo motor for feed drive increases. Further, this configuration cannot be applied to a slider device that does not use a feed screw for moving a moving body such as a linear motor drive.

この発明が解決しようとする課題は、位置ずれ防止のために、有限コロ軸受の保持器を強制移動させ、保持器の変形による有限コロ軸受の機能低下を生じることがない有限コロ軸受の保持器ずれ防止装置を、送りねじを使用することなく、簡単な構造で、移動体送り駆動のモータ負荷を大きく増加することがなく、しかも、リニアモータ駆動等の送りねじを用いないスライダ装置にも適用できるようにすることである。   The problem to be solved by the present invention is to prevent the displacement of a finite roller bearing by forcibly moving the finite roller bearing so that the function of the finite roller bearing does not deteriorate due to deformation of the cage. The slip prevention device has a simple structure without using a feed screw, does not increase the motor load for moving body feed drive, and is applied to a slider device that does not use a feed screw such as a linear motor drive. Is to be able to do it.

この発明は、複数個のコロが保持器によって保持された有限コロ軸受を介して移動体が固定体の案内面に沿って直線移動するスライダ装置における有限コロ軸受の保持器ずれ防止装置であって、前記案内面の両端に各々に配置された第１の支持軸および第２の支持軸と、前記第１の支持軸により回転可能に支持された第１のワイヤ巻取車と、前記第２の支持軸により回転可能に支持され、前記第１のワイヤ巻取車と同一径の第２のワイヤ巻取車と、一端を前記第１のワイヤ巻取車の外周面に固定され、他端を前記移動体に固定され、前記案内面側に配置された第１のワイヤと、一端を前記第２のワイヤ巻取車の外周面に固定され、他端を前記移動体に固定され、前記案内面側に配置された第２のワイヤと、前記第１の支持軸により回転可能に支持され、前記第１のワイヤ巻取車と固定連結され、前記第１のワイヤ巻取車の１／２の直径の第３のワイヤ巻取車と、前記第２の支持軸により回転可能に支持され、前記第２のワイヤ巻取車と固定連結され、前記第２のワイヤ巻取車の１／２の直径の第４のワイヤ巻取車と、一端を前記第３のワイヤ巻取車の外周面に固定され、他端を前記保持器に固定され、前記案内面側に配置された第３のワイヤと、一端を前記第４のワイヤ巻取車の外周面に固定され、他端を前記保持器に固定され、前記案内面側に配置された第４のワイヤと、前記第１の支持軸により回転可能に支持され、前記第１のワイヤ巻取車と固定連結された第５のワイヤ巻取車と、前記第２の支持軸により回転可能に支持され、前記第２のワイヤ巻取車と固定連結され、前記第５のワイヤ巻取車と同一径の第６のワイヤ巻取車と、一端を前記第５のワイヤ巻取車の外周面に固定され、他端を前記第６のワイヤ巻取車の外周面に固定され、前記案内面側に配置された第５のワイヤとを有し、前記各ワイヤは所定のテンションを与えられている。 The present invention is a cage displacement prevention device for a finite roller bearing in a slider device in which a moving body linearly moves along a guide surface of a fixed body via a finite roller bearing in which a plurality of rollers are held by a cage. , A first support shaft and a second support shaft respectively disposed at both ends of the guide surface, a first wire winding wheel supported rotatably by the first support shaft, and the second A second wire winder having the same diameter as the first wire winder, one end fixed to the outer peripheral surface of the first wire winder, and the other end is fixed to the movable body, a first wire disposed on the guide surface, is fixed at one end to the outer peripheral surface of the second wire take Tokuruma is fixed at the other end to the movable body, wherein a second wire disposed on the guide surface, rotatable by said first support shaft And is fixedly connected to the first wire take-up wheel, and is rotatable by a third wire take-up wheel having a diameter ½ that of the first wire take-up wheel and the second support shaft. A fourth wire take-up wheel that is supported and fixedly connected to the second wire take-up wheel and has a diameter half that of the second wire take-up wheel, and one end of the third wire take-up wheel. The other end is fixed to the cage, the other end is fixed to the guide surface side, and the other end is fixed to the outer peripheral surface of the fourth wire take-up wheel. Is fixed to the retainer and is rotatably supported by a fourth wire disposed on the guide surface side and the first support shaft, and is fixedly connected to the first wire take-up wheel. A wire take-up wheel, and a second support shaft rotatably supported by the second wire take-up wheel, A sixth wire winder having the same diameter as that of the fifth wire winder, one end of which is fixed to the outer peripheral surface of the fifth wire winder, and the other end of the outer periphery of the sixth wire winder. It is secured to, possess a fifth wires arranged in the guide surface, wherein each wire that is given a predetermined tension.

この発明による有限コロ軸受の保持器ずれ防止装置は、移動体の移動に対して従動的なワイヤ駆動によって保持器が移動し、保持器に接続されたワイヤの巻き取りを行う第３のワイヤ巻取車および第４のワイヤ巻取車の直径が移動体に接続されたワイヤの巻き取りを行う第１のワイヤ巻取車および第２のワイヤ巻取車の直径の１／２であることにより、保持器の移動速度（移動量）は、移動体の移動速度（移動量）の１／２になり、保持器の位置ずれが生じない。   The cage displacement prevention device for a finite roller bearing according to the present invention is a third wire winding for winding the wire connected to the cage by moving the cage by wire driving driven by the movement of the moving body. The diameters of the take-up wheel and the fourth wire take-up wheel are ½ of the diameters of the first wire take-up wheel and the second wire take-up wheel for winding the wire connected to the moving body. The moving speed (moving amount) of the cage is ½ of the moving speed (moving amount) of the moving body, and the positional deviation of the cage does not occur.

これにより、保持器の変形による有限コロ軸受の機能低下を生じることがなく、保持器の強制移動に送りねじを必要としないから、簡単な構造で、移動体送り駆動のモータ負荷を大きく増加することがない。しかも、この保持器ずれ防止装置は、リニアモータ駆動等の送りねじを用いないスライダ装置にも適用できる。   As a result, the function of the finite roller bearing does not deteriorate due to deformation of the cage, and a feed screw is not required for forced movement of the cage, so the motor load for moving body feed drive is greatly increased with a simple structure. There is nothing. In addition, this cage slip prevention device can also be applied to a slider device that does not use a feed screw such as a linear motor drive.

この発明による有限コロ軸受の保持器ずれ防止装置の一つの実施形態を適用されたスライダ装置を、図１〜図３を参照して説明する。   A slider device to which one embodiment of a cage slip prevention device for a finite roller bearing according to the present invention is applied will be described with reference to FIGS.

この実施形態では、固定体として固定配置のベッド１０が、移動体としてテーブル２０が設けられている。 In this embodiment, a fixedly arranged bed 10 is provided as a fixed body, and a table 20 is provided as a movable body.

ベッド１０の上面には直線案内面をなすＶ形案内溝１１、１２が形成されている。テーブル２０の下底面には、各々、Ｖ形案内溝１１、１２に係合するＶ形案内突条２１、２２が形成されている。   V-shaped guide grooves 11 and 12 forming a straight guide surface are formed on the upper surface of the bed 10. V-shaped guide protrusions 21 and 22 that engage with the V-shaped guide grooves 11 and 12, respectively, are formed on the lower bottom surface of the table 20.

Ｖ形案内溝１１とＶ形案内突条２１との間、Ｖ形案内溝１２とＶ形案内突条２２との間には、各々有限コロ軸受３１、３２が挟まれている。有限コロ軸受３１、３２は、各々複数個のコロ３３、３４がＶ形の保持器３５、３６によって保持されたコロ非循環式のリニアコロ軸受である。テーブル２０は、有限コロ軸受３１、３２を介してベッド１０の案内面（Ｖ形案内溝１１、１２）に沿って直線移動する。これにより、Ｖ−Ｖころがり案内が成立する。 Finite roller bearings 31 and 32 are sandwiched between the V-shaped guide groove 11 and the V-shaped guide ridge 21, and between the V-shaped guide groove 12 and the V-shaped guide ridge 22, respectively. The finite roller bearings 31 and 32 are roller non-circular linear roller bearings in which a plurality of rollers 33 and 34 are held by V-shaped cages 35 and 36, respectively. The table 20 moves linearly along the guide surface (V-shaped guide grooves 11 and 12) of the bed 10 via the finite roller bearings 31 and 32. As a result, VV rolling guidance is established.

ベッド１０にはボールねじ（送りねじ）３７が回転可能に取り付けられている。ボールねじ３７は、テーブル２０の直線移動方向に沿って設けられており、テーブル２０に取り付けられたボールナット３８にねじ係合している。ボールねじ３７は、移動体送り駆動用のサーボモータ（図示省略）によって回転駆動されることにより、ボールナット３８とのねじ係合によってテーブル２０を往復直線駆動する。 A ball screw (feed screw) 37 is rotatably attached to the bed 10 . Ball screw 37 is provided along the linear movement direction of the table 20, are engaged threaded engagement with the ball nut 38 mounted on the table 20. The ball screw 37 is rotationally driven by a moving body feed drive servo motor (not shown), thereby reciprocating linearly driving the table 20 by screw engagement with the ball nut 38.

なお、この実施形態では、テーブル２０の直線駆動は、ボールねじ３７、ボールナット３８によって行われるが、リニアモータ等によって行われてもよい。 In this embodiment, the linear drive of the table 20 is performed by the ball screw 37 and the ball nut 38, but may be performed by a linear motor or the like.

以下に、有限コロ軸受３１、３２の保持器ずれ防止装置について説明する。保持器ずれ防止装置は、有限コロ軸受３１の保持器３５と、有限コロ軸受３２の保持器３６の双方に同様に構成される。   In the following, the cage deviation preventing device for the finite roller bearings 31 and 32 will be described. The cage slip prevention device is similarly configured in both the cage 35 of the finite roller bearing 31 and the cage 36 of the finite roller bearing 32.

有限コロ軸受３１の保持器３５の保持器ずれ防止装置と、有限コロ軸受３２の保持器３６の保持器ずれ防止装置は、全く同一に構成されるものであるから、本実施形態の説明では、冗長を避けるべく、有限コロ軸受３１の保持器３５の保持器ずれ防止装置についてのみ説明する。なお、各保持器ずれ防止装置に設けられる後述のワイヤ巻取車は、各案内面毎に独立して設けられいても、軸を貫通して互いに連動する構成でもよい。   Since the cage deviation prevention device of the cage 35 of the finite roller bearing 31 and the cage deviation prevention device of the cage 36 of the finite roller bearing 32 are configured identically, in the description of this embodiment, In order to avoid redundancy, only the cage slip prevention device for the cage 35 of the finite roller bearing 31 will be described. In addition, even if the below-mentioned wire winding wheel provided in each retainer deviation | shift prevention apparatus is provided independently for every guide surface, the structure which penetrates a shaft and interlock | cooperates with each other may be sufficient.

Ｖ形案内溝１１の両端部、換言すると、ベッド１０の一端部には第１のブラケット４１が、ベッド１０の他端部には第２のブラケット４２が取り付けられている。   A first bracket 41 is attached to both ends of the V-shaped guide groove 11, in other words, one end of the bed 10, and a second bracket 42 is attached to the other end of the bed 10.

第１のブラケット４１には第１の支持軸４３が、第２のブラケット４２には第２の支持軸４４が各々取り付けられている。   A first support shaft 43 is attached to the first bracket 41, and a second support shaft 44 is attached to the second bracket 42.

第１の支持軸４３は、第１のワイヤ巻取車４５と、第３のワイヤ巻取車４７と、第５のワイヤ巻取車４９の固定連結体を回転可能に支持している。   The first support shaft 43 rotatably supports the fixed connection body of the first wire winding wheel 45, the third wire winding wheel 47, and the fifth wire winding wheel 49.

第２の支持軸４４は、第２のワイヤ巻取車４６と、第４のワイヤ巻取車４８と、第６のワイヤ巻取車５０の固定連結体を回転可能に支持している。   The second support shaft 44 rotatably supports the fixed coupling body of the second wire winding wheel 46, the fourth wire winding wheel 48, and the sixth wire winding wheel 50.

第１のワイヤ巻取車４５〜第６のワイヤ巻取車５０は、各々、ワイヤを巻き取るものであり、溝なしプーリ、あるいはウィンチドラムのように、螺旋状のワイヤ巻き取り溝を有するプーリのようなもので構成することができる。   Each of the first wire take-up wheel 45 to the sixth wire take-up wheel 50 winds a wire, and a pulley having a spiral wire take-up groove like a grooveless pulley or a winch drum. It can be comprised by such things.

第１のワイヤ巻取車４５と第２のワイヤ巻取車４６は、互いに同一径である。第３のワイヤ巻取車４７と第４のワイヤ巻取車４８は、互いに同一径で、第１のワイヤ巻取車４５、第２のワイヤ巻取車４６の直径の１／２の直径である。第５のワイヤ巻取車４９と第６のワイヤ巻取車５０は、互いに同一径であればよく、他のワイヤ巻取車との直径比は、問われない。   The first wire winding wheel 45 and the second wire winding wheel 46 have the same diameter. The third wire take-up wheel 47 and the fourth wire take-up wheel 48 have the same diameter, and have a diameter that is ½ of the diameter of the first wire take-up wheel 45 and the second wire take-up wheel 46. is there. The fifth wire take-up wheel 49 and the sixth wire take-up wheel 50 may have the same diameter as each other, and the diameter ratio with respect to the other wire take-up wheels is not limited.

第１のワイヤ巻取車４５には第１のワイヤ５１の一端が固定点４５Ａをもって固定されている。第１のワイヤ５１は、他端をテーブル２０の一端部に固定点２０Ａをもって固定されている。   One end of the first wire 51 is fixed to the first wire take-up wheel 45 with a fixing point 45A. The other end of the first wire 51 is fixed to one end of the table 20 with a fixing point 20A.

第２のワイヤ巻取車４６には第２のワイヤ５２の一端が固定点４６Ａをもって固定されている。第２のワイヤ５２は、他端をテーブル２０の他端部に固定点２０Ｂをもって固定されている。   One end of the second wire 52 is fixed to the second wire winding wheel 46 with a fixing point 46A. The other end of the second wire 52 is fixed to the other end of the table 20 with a fixing point 20B.

第３のワイヤ巻取車４７には第３のワイヤ５３の一端が固定点４７Ａをもって固定されている。第３のワイヤ５３は、他端を有限コロ軸受３１の保持器３５の一端部に固定点３５Ａをもって固定されている。   One end of a third wire 53 is fixed to the third wire take-up wheel 47 with a fixing point 47A. The other end of the third wire 53 is fixed to one end of the cage 35 of the finite roller bearing 31 with a fixing point 35A.

第４のワイヤ巻取車４８には第４のワイヤ５４の一端が固定点４８Ａをもって固定されている。第４のワイヤ５４は、他端を有限コロ軸受３１の保持器３５の他端部に固定点３５Ｂをもって固定されている。   One end of a fourth wire 54 is fixed to the fourth wire winding wheel 48 with a fixing point 48A. The other end of the fourth wire 54 is fixed to the other end of the cage 35 of the finite roller bearing 31 with a fixing point 35B.

第５のワイヤ巻取車４９には第５のワイヤ５５の一端が固定点４９Ａをもって固定されている。第５のワイヤ５５は、他端を固定点５０Ａをもって第６のワイヤ巻取車５０に固定されている。つまり、第５のワイヤ巻取車４９と第６のワイヤ巻取車５０とが第５のワイヤ５５によって連携している。   One end of the fifth wire 55 is fixed to the fifth wire winding wheel 49 with a fixing point 49A. The other end of the fifth wire 55 is fixed to the sixth wire take-up wheel 50 with a fixing point 50A. That is, the fifth wire winder 49 and the sixth wire winder 50 are linked by the fifth wire 55.

なお、第１のワイヤ５１〜第５のワイヤ５５は、各々、所定のテンションを与えられ、たるみのないものである。   The first wire 51 to the fifth wire 55 are each given a predetermined tension and have no slack.

移動体２０が、ベッド１０上を、図２で見て右方向に移動する場合の保持器ずれ防止装置の動作について説明する。   The operation of the cage deviation preventing device when the moving body 20 moves on the bed 10 in the right direction as viewed in FIG. 2 will be described.

移動体２０が、ベッド１０上を、図２で見て右方向に移動すると、第１のワイヤ５１が同方向に引っ張られ、第１のワイヤ巻取車４５が移動体２０の移動量（移動速度）に応じた回転角（周速度）をもって時計廻り方向に回転する。   When the moving body 20 moves on the bed 10 in the right direction as viewed in FIG. 2, the first wire 51 is pulled in the same direction, and the first wire take-up wheel 45 moves the moving amount (movement) of the moving body 20. Rotate clockwise with a rotation angle (peripheral speed) according to the speed.

第１のワイヤ巻取車４５の時計廻り方向の回転によって、同軸上の第３のワイヤ巻取車４７と第５のワイヤ巻取車４９が、第１のワイヤ巻取車４５の回転角と同じ回転角だけ、時計廻り方向に回転する。   Due to the clockwise rotation of the first wire take-up wheel 45, the third wire take-up wheel 47 and the fifth wire take-up wheel 49 on the same axis are rotated with the rotation angle of the first wire take-up wheel 45. Rotate clockwise by the same rotation angle.

第５のワイヤ巻取車４９の時計廻り方向の回転によって、第５のワイヤ５５が、第５のワイヤ巻取車４９の外周に巻き取られ、左方向に引っ張られる。これにより、第６のワイヤ巻取車５０が、第５のワイヤ巻取車４９の回転角と同じ回転角だけ、時計廻り方向に回転する。   As the fifth wire winding wheel 49 rotates in the clockwise direction, the fifth wire 55 is wound around the outer periphery of the fifth wire winding wheel 49 and pulled leftward. Accordingly, the sixth wire winding wheel 50 rotates in the clockwise direction by the same rotation angle as the rotation angle of the fifth wire winding wheel 49.

第６のワイヤ巻取車５０の時計廻り方向の回転によって、同軸上の第２のワイヤ巻取車４６と第４のワイヤ巻取車４８が、第６のワイヤ巻取車５０の回転角と同じ回転角だけ、時計廻り方向に回転する。第４のワイヤ巻取車４８の時計廻り方向の回転によって、第４のワイヤ５４が第４のワイヤ巻取車４８の外周に巻き取られ、右方向に引っ張られる。   Due to the clockwise rotation of the sixth wire take-up wheel 50, the second wire take-up wheel 46 and the fourth wire take-up wheel 48 on the same axis are rotated with the rotation angle of the sixth wire take-up wheel 50. Rotate clockwise by the same rotation angle. As the fourth wire winding wheel 48 rotates in the clockwise direction, the fourth wire 54 is wound around the outer periphery of the fourth wire winding wheel 48 and pulled rightward.

これにより、保持器３５が第４のワイヤ５４によって引っ張られ、保持器３５の移動遅れが防止される。これと同時に、第３のワイヤ５３の緊張によって保持器３５の先送りが防止される。 Thereby, the holder | retainer 35 is pulled by the 4th wire 54, and the movement delay of the holder | retainer 35 is prevented. At the same time, the retainer 35 is prevented from being advanced by the tension of the third wire 53 .

また、これと同時に、第２のワイヤ５２が第２のワイヤ巻取車４６の時計廻り方向の回転によって第２のワイヤ巻取車４６の外周に巻き取られ、第２のワイヤ５２のたるみが防止される。   At the same time, the second wire 52 is wound around the outer periphery of the second wire take-up wheel 46 by the clockwise rotation of the second wire take-up wheel 46, and the slack of the second wire 52 is caused. Is prevented.

第３のワイヤ巻取車４７と第４のワイヤ巻取車４８は、第１のワイヤ巻取車４５、第２のワイヤ巻取車４６の直径の１／２の直径であるから、このときの第４のワイヤ巻取車４８の周速度は第２のワイヤ巻取車４６の周速度の１／２で、第４のワイヤ巻取車４８に対する第４のワイヤ５４の巻取量（長さ）は第２のワイヤ巻取車４６に対する第２のワイヤ５２の巻取量（長さ）の１／２である。   Since the third wire take-up wheel 47 and the fourth wire take-up wheel 48 are ½ the diameter of the first wire take-up wheel 45 and the second wire take-up wheel 46, at this time The peripheral speed of the fourth wire take-up wheel 48 is ½ of the peripheral speed of the second wire take-up wheel 46, and the winding amount (long) of the fourth wire 54 with respect to the fourth wire take-up wheel 48 is long. Is a half of the winding amount (length) of the second wire 52 with respect to the second wire winding wheel 46.

これにより、保持器３５の移動速度（移動量）は、テーブル２０の移動速度（移動量）の１／２になり、テーブル２０に対して保持器３５が位置ずれを生じることない。   As a result, the moving speed (moving amount) of the retainer 35 is ½ of the moving speed (moving amount) of the table 20, and the retainer 35 is not displaced relative to the table 20.

この位置ずれ防止は、保持器３５をストッパ等に衝突させて位置ずれを修正するものではないから、保持器３５の変形による有限コロ軸受の機能低下を生じることがない。   This prevention of misalignment does not correct the misalignment by causing the retainer 35 to collide with a stopper or the like, so that the function of the finite roller bearing does not deteriorate due to the deformation of the retainer 35.

また、保持器の強制移動に、送りねじを必要としないから、簡単な構造で、移動体送り駆動のモータ負荷を大きく増加することがない。しかも、この保持器ずれ防止装置は、リニアモータ駆動等の送りねじを用いないスライダ装置にも適用できる。   In addition, since a feed screw is not required for the forced movement of the cage, the motor load for moving body feed drive is not greatly increased with a simple structure. In addition, this cage slip prevention device can also be applied to a slider device that does not use a feed screw such as a linear motor drive.

この発明による有限コロ軸受の保持器ずれ防止装置の一つの実施形態を適用されたスライダ装置の斜視図。1 is a perspective view of a slider device to which one embodiment of a cage slip prevention device for a finite roller bearing according to the present invention is applied. FIG. この発明による有限コロ軸受の保持器ずれ防止装置の一つの実施形態を解図的に示す側面図。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view schematically showing an embodiment of a cage slip prevention device for a finite roller bearing according to the present invention. この発明による有限コロ軸受の保持器ずれ防止装置の一つの実施形態を適用されたスライダ装置の端面図。1 is an end view of a slider device to which one embodiment of a cage slip prevention device for a finite roller bearing according to the present invention is applied.

符号の説明Explanation of symbols

１０ ベッド
１１、１２ Ｖ形案内溝
２０ テーブル
２１、２２ Ｖ形案内突条
３１、３２ 有限コロ軸受
３３、３４ コロ
３５、３６ 保持器
３７ ボールねじ
３８ ボールナット
４１ 第１のブラケット
４２ 第２のブラケット
４３ 第１の支持軸
４４ 第２の支持軸
４５ 第１のワイヤ巻取車
４６ 第２のワイヤ巻取車
４７ 第３のワイヤ巻取車
４８ 第４のワイヤ巻取車
４９ 第５のワイヤ巻取車
５０ 第６のワイヤ巻取車
５１ 第１のワイヤ
５２ 第２のワイヤ
５３ 第３のワイヤ
５４ 第４のワイヤ
５５ 第５のワイヤ
10 Bed 11, 12 V-shaped guide groove 20 Table 21, 22 V-shaped guide protrusion 31, 32 Finite roller bearing 33, 34 Roller 35, 36 Cage 37 Ball screw 38 Ball nut 41 First bracket 42 Second bracket 43 1st support shaft 44 2nd support shaft 45 1st wire winding wheel 46 2nd wire winding vehicle 47 3rd wire winding vehicle 48 4th wire winding vehicle 49 5th wire winding Car Take 50 Sixth Wire Winder 51 First Wire 52 Second Wire 53 Third Wire 54 Fourth Wire 55 Fifth Wire

Claims (1)

複数個のコロが保持器によって保持された有限コロ軸受を介して移動体が固定体の案内面に沿って直線移動するスライダ装置における有限コロ軸受の保持器ずれ防止装置であって、
前記案内面の両端に各々に配置された第１の支持軸および第２の支持軸と、
前記第１の支持軸により回転可能に支持された第１のワイヤ巻取車と、
前記第２の支持軸により回転可能に支持され、前記第１のワイヤ巻取車と同一径の第２のワイヤ巻取車と、
一端を前記第１のワイヤ巻取車の外周面に固定され、他端を前記移動体に固定され、前記案内面側に配置された第１のワイヤと、
一端を前記第２のワイヤ巻取車の外周面に固定され、他端を前記移動体に固定され、前記案内面側に配置された第２のワイヤと、
前記第１の支持軸により回転可能に支持され、前記第１のワイヤ巻取車と固定連結され、前記第１のワイヤ巻取車の１／２の直径の第３のワイヤ巻取車と、
前記第２の支持軸により回転可能に支持され、前記第２のワイヤ巻取車と固定連結され、前記第２のワイヤ巻取車の１／２の直径の第４のワイヤ巻取車と、
一端を前記第３のワイヤ巻取車の外周面に固定され、他端を前記保持器に固定され、前記案内面側に配置された第３のワイヤと、
一端を前記第４のワイヤ巻取車の外周面に固定され、他端を前記保持器に固定され、前記案内面側に配置された第４のワイヤと、
前記第１の支持軸により回転可能に支持され、前記第１のワイヤ巻取車と固定連結された第５のワイヤ巻取車と、
前記第２の支持軸により回転可能に支持され、前記第２のワイヤ巻取車と固定連結され、前記第５のワイヤ巻取車と同一径の第６のワイヤ巻取車と、
一端を前記第５のワイヤ巻取車の外周面に固定され、他端を前記第６のワイヤ巻取車の外周面に固定され、前記案内面と反対側に配置された第５のワイヤと、
を有し、前記各ワイヤは所定のテンションを与えられている有限コロ軸受の保持器ずれ防止装置。 A cage displacement prevention device for a finite roller bearing in a slider device in which a moving body linearly moves along a guide surface of a fixed body via a finite roller bearing in which a plurality of rollers are held by a cage,
A first support shaft and a second support shaft respectively disposed at both ends of the guide surface;
A first wire take-up wheel rotatably supported by the first support shaft;
A second wire winder that is rotatably supported by the second support shaft and has the same diameter as the first wire winder;
One end fixed to the outer peripheral surface of the first wire take-up wheel, the other end fixed to the movable body, and a first wire disposed on the guide surface side ;
One end is fixed to the outer peripheral surface of the second wire take-up wheel, the other end is fixed to the movable body, and the second wire is disposed on the guide surface side ,
A third wire take-up wheel that is rotatably supported by the first support shaft, is fixedly connected to the first wire take-up wheel, and has a diameter that is ½ of the first wire take-up wheel;
A fourth wire take-up wheel that is rotatably supported by the second support shaft, is fixedly connected to the second wire take-up wheel, and has a diameter that is ½ of the second wire take-up wheel;
One end is fixed to the outer peripheral surface of the third wire take-up wheel, the other end is fixed to the cage, and the third wire is disposed on the guide surface side ,
One end is fixed to the outer peripheral surface of the fourth wire take-up wheel, the other end is fixed to the cage, and a fourth wire disposed on the guide surface side ;
A fifth wire winder supported rotatably by the first support shaft and fixedly connected to the first wire winder;
A sixth wire take-up wheel that is rotatably supported by the second support shaft, is fixedly connected to the second wire take-up wheel, and has the same diameter as the fifth wire take-up wheel;
One end fixed to the outer peripheral surface of the fifth wire winder, the other end fixed to the outer peripheral surface of the sixth wire winder, and a fifth wire disposed on the opposite side of the guide surface ; ,
Yes, and each wire retainer shift preventing apparatus of a finite roller bearings that have been given a predetermined tension to.
JP2005300250A 2005-10-14 2005-10-14 Device for preventing cage slippage of finite roller bearing Active JP4721862B2 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5560718A (en) * 1978-10-31 1980-05-08 Toshiba Corp Linear bearing
JPS62155325A (en) * 1985-12-27 1987-07-10 Makino Milling Mach Co Ltd Linear bearing device
JPH0256534U (en) * 1988-10-12 1990-04-24
JPH0488523U (en) * 1990-12-20 1992-07-31
JPH06280869A (en) * 1993-03-22 1994-10-07 Laser Tec Kk Needle roller type linear guide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5560718A (en) * 1978-10-31 1980-05-08 Toshiba Corp Linear bearing
JPS62155325A (en) * 1985-12-27 1987-07-10 Makino Milling Mach Co Ltd Linear bearing device
JPH0256534U (en) * 1988-10-12 1990-04-24
JPH0488523U (en) * 1990-12-20 1992-07-31
JPH06280869A (en) * 1993-03-22 1994-10-07 Laser Tec Kk Needle roller type linear guide

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