JP2013108621A - Circulating member, motion guide device, and ball screw device - Google Patents

Circulating member, motion guide device, and ball screw device Download PDF

Info

Publication number
JP2013108621A
JP2013108621A JP2012236002A JP2012236002A JP2013108621A JP 2013108621 A JP2013108621 A JP 2013108621A JP 2012236002 A JP2012236002 A JP 2012236002A JP 2012236002 A JP2012236002 A JP 2012236002A JP 2013108621 A JP2013108621 A JP 2013108621A
Authority
JP
Japan
Prior art keywords
rolling element
rolling
path
protrusion
hole
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
Application number
JP2012236002A
Other languages
Japanese (ja)
Other versions
JP6118532B2 (en
Inventor
Nobuyuki Maki
信之 槇
Fukuji Nakano
富久治 中野
Shigemi Nakamura
重巳 中村
Takuya Horie
拓也 堀江
Koshin Wada
光真 和田
Ayako Miyajima
綾子 宮島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THK Co Ltd
Original Assignee
THK Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by THK Co Ltd filed Critical THK Co Ltd
Priority to JP2012236002A priority Critical patent/JP6118532B2/en
Publication of JP2013108621A publication Critical patent/JP2013108621A/en
Application granted granted Critical
Publication of JP6118532B2 publication Critical patent/JP6118532B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • F16C29/065—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 rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry load
    • 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
    • F16C33/46—Cages for rollers or needles
    • F16C33/50—Cages for rollers or needles formed of interconnected members, e.g. chains
    • F16C33/506—Cages for rollers or needles formed of interconnected members, e.g. chains formed as a flexible belt

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To provide a circulating member which can be easily assembled, a motion guide device and a ball screw device with the circulating member incorporated therein.SOLUTION: The circulating member 40 included in an endless circulation path composed of a rolling element returning path, a load rolling element running path, and a pair of direction changing paths consists in a combination of at least two segments 41a and 41b, in which a plurality of projections 42b and recesses 43b engaging with each other are formed at the joining surfaces 46 of the segments, wherein each projection has a first protrusion, and a second protrusion whose protrusion amount in the perpendicular direction to the joining surface is larger than the first one.

Description

本発明は、循環部材、及びこの循環部材を組み込んだ運動案内装置及びボールねじ装置に関する。   The present invention relates to a circulation member, and a motion guide device and a ball screw device incorporating the circulation member.

従来から、長手方向に沿って延びる軌道部材と、この軌道部材に転動体を介して軌道部材の長手方向に往復運動可能に組み付けられた移動部材とを備えた運動案内装置が知られている。また、多数の転動体を介してねじ軸とナット部材とが螺合したボールねじ装置が知られている。   2. Description of the Related Art Conventionally, there has been known a motion guide device including a track member extending along a longitudinal direction and a moving member assembled to the track member through a rolling element so as to be reciprocally movable in the longitudinal direction of the track member. Also known is a ball screw device in which a screw shaft and a nut member are screwed through a large number of rolling elements.

従来の無限循環式の循環経路は、移動部材やナット部材の長手方向に貫通する転動体戻し路を形成し、移動部材やナット部材の長手方向の両端部に、軸部材やねじ軸と移動部材やナット部材との間に形成された負荷転動体転走路と転動体戻し路とを連絡する方向転換路をさらに形成して構成されている。   A conventional endless circulation type circulation path forms a rolling element return path that penetrates in the longitudinal direction of the moving member or nut member, and a shaft member, a screw shaft, and a moving member at both ends in the longitudinal direction of the moving member or nut member. Further, a direction changing path that connects the rolling rolling element rolling path and the rolling element return path formed between the nut member and the nut member is further formed.

このような構成によると、移動部材やナット部材の往復運動に伴って、負荷転動体転走路を転動する転動体が荷重を負荷しながら負荷転動体転走路の一端に至ると、方向転換路によって方向を転換され、転動体戻し路を介して再び負荷転動体転走路の他端に戻されることにより、転動体の無限循環を実現している。   According to such a configuration, when the rolling element rolling on the loaded rolling element rolling path reaches one end of the loaded rolling element rolling path while applying a load, along with the reciprocating motion of the moving member or the nut member, the direction changing path The direction is changed by this, and the endless circulation of the rolling elements is realized by returning to the other end of the loaded rolling element rolling path again through the rolling element return path.

また、転動体戻し路は、貫通孔に合成樹脂などからなる筒状の循環部材を挿入して形成されている。さらに循環部材は、一対の分割体からなり、各分割体の合わせ面に形成された凹部および凸部を嵌合させることによって位置決めを行い、互いに組み合わせて筒状に構成したものが知られている。   The rolling element return path is formed by inserting a cylindrical circulation member made of synthetic resin or the like into the through hole. Furthermore, the circulation member is composed of a pair of divided bodies, and positioning is performed by fitting concave portions and convex portions formed on the mating surfaces of the respective divided bodies, and those configured in combination with each other to form a cylindrical shape are known. .

特開２００８−２９１９７５号公報JP 2008-291975 A

しかしながら、従来の循環部材を組み込んだ運動案内装置及びボールねじ装置によると、分割体に形成された凹部および凸部は互いに嵌合されておらず、互いの相対位置を固定するために隙間嵌めされているのみであるため循環部材を移動部材やナット部材に組み立てる作業において、循環部材から手を離すと、分割体が互いに分離してしまい、容易に組み立てることができないといった問題があった。   However, according to the motion guide device and the ball screw device incorporating the conventional circulation member, the concave portion and the convex portion formed in the divided body are not fitted to each other, and the gap is fitted to fix the relative position of each other. Therefore, in assembling the circulating member into the moving member and the nut member, if the hands are released from the circulating member, the divided bodies are separated from each other, and there is a problem that the assembled members cannot be easily assembled.

本発明は、上記課題を解決するために成されたものであって、容易に組み立てることができる循環部材、及びこの循環部材を組み込んだ運動案内装置及びボールねじ装置を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a circulating member that can be easily assembled, and a motion guide device and a ball screw device incorporating the circulating member. .

本発明に係る循環部材及び運動案内装置は、長手方向に転動体転走面を有する軌道部材と、前記転動体転走面に対向する負荷転動体転走面と、前記負荷転動体転走面と平行して延びる転動体戻し路とが形成された移動部材と、前記移動部材の両端部に設置される一対の蓋体と、前記転動体転走面と前記負荷転動体転走面とから構成される負荷転動体転走路と、前記転動体戻し路をつなぐ方向転換路を有する運動案内装置に組み込まれる循環部材であって、前記転動体戻し路、前記負荷転動体転走路及び一対の前記方向転換路とから構成される無限循環路に含まれる循環部材は、少なくとも二つの分割体を互いに組み合わせてなり、前記分割体の合わせ面には、互いに係合する複数の凸部及び凹部が形成され、前記複数の凸部は第１の突起と前記第１の突起よりも合わせ面の垂直方向に突出量が大きい第２の突起とを有することを特徴とする。   The circulating member and the motion guide device according to the present invention include a raceway member having a rolling element rolling surface in a longitudinal direction, a loaded rolling element rolling surface facing the rolling element rolling surface, and the loaded rolling element rolling surface. A moving member formed with a rolling element return path extending in parallel with the pair of lids installed at both ends of the moving member, the rolling element rolling surface and the load rolling element rolling surface. A circulating member incorporated in a motion guide device having a configured rolling element rolling path and a direction changing path connecting the rolling element return path, the rolling element return path, the load rolling element rolling path and the pair of the rolling element The circulation member included in the infinite circulation path composed of the direction change path is formed by combining at least two divided bodies with each other, and a plurality of convex portions and concave portions that are engaged with each other are formed on the mating surfaces of the divided bodies. And the plurality of convex portions are in front of the first protrusion. And having a first second protrusion is greater protruding amount in the vertical direction of the mating surface than the projection.

また、本発明に係るボールねじ装置は、外周面に螺旋状の転動体転走溝が形成されたねじ軸と、このねじ軸が貫通する貫通孔を有して略円筒状に形成されると共に、複数の転動体を介して前記ねじ軸に螺合し、内周面には前記転動体転走溝と対向して螺旋状の負荷転動体転走路を構成する螺旋状の負荷転動体転走溝が形成され、更に、前記貫通孔と平行して延びる転動体戻し路とが形成されたナット部材と、前記ナット部材の両端部に設置されると共に、前記負荷転動体転走路と前記転動体戻し路をつなぐ方向転換路を有する蓋部とを備えるボールねじ装置であって、前記転動体戻し路、前記負荷転動体転走路及び一対の前記方向転換路とから構成される無限循環路に含まれる循環部材は、少なくとも二つの分割体を互いに組み合わせてなり、前記分割体の合わせ面には、互いに係合する複数の凸部及び凹部が形成され、前記複数の凸部は第１の突起と前記第１の突起よりも合わせ面の垂直方向に突出量が大きい第２の突起とを有することを特徴とする。   The ball screw device according to the present invention is formed in a substantially cylindrical shape having a screw shaft having a spiral rolling element rolling groove formed on the outer peripheral surface and a through hole through which the screw shaft passes. A helically loaded rolling element rolling which is screwed into the screw shaft via a plurality of rolling elements and forms a helically loaded rolling element rolling path facing the rolling element rolling groove on the inner peripheral surface. A nut member in which a groove is formed and a rolling element return path extending in parallel with the through hole is formed, and is installed at both ends of the nut member, and the load rolling element rolling path and the rolling element A ball screw device including a lid having a direction change path connecting the return paths, and included in the endless circulation path composed of the rolling element return path, the load rolling element rolling path, and a pair of the direction change paths The circulating member is a combination of at least two segments. A plurality of convex portions and concave portions that are engaged with each other are formed on the mating surface of the divided body, and the plurality of convex portions have a projection amount in a direction perpendicular to the mating surface from the first projection and the first projection. And a large second protrusion.

本発明によれば、一対の分割体を確実に嵌合させることができ、運動案内装置にスムーズに組み付けられるので、生産性を向上させることができる。   According to the present invention, the pair of divided bodies can be reliably fitted to each other and can be smoothly assembled to the motion guide device, so that productivity can be improved.

本発明の第１の実施形態に係る運動案内装置を示す斜視図。The perspective view which shows the exercise | movement guide apparatus which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る運動案内装置に用いられる移動部材の構造を説明するための分解図。The exploded view for demonstrating the structure of the moving member used for the exercise | movement guide apparatus which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る運動案内装置に用いられる移動部材に組み付けられる循環部材の分解図。The exploded view of the circulation member assembled | attached to the moving member used for the exercise | movement guide apparatus which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る運動案内装置の循環部材を構成する分割体の斜視図。The perspective view of the division body which comprises the circulation member of the exercise | movement guide apparatus which concerns on the 1st Embodiment of this invention. 本発明の第１の実施形態に係る運動案内装置の循環部材を構成する分割体の正面図。The front view of the division body which comprises the circulation member of the movement guide apparatus which concerns on the 1st Embodiment of this invention. 図５におけるＡ−Ａ断面図。AA sectional drawing in FIG. 図５におけるＢ−Ｂ断面図。BB sectional drawing in FIG. 図５におけるＣ−Ｃ断面図。CC sectional drawing in FIG. 図５におけるＤ−Ｄ断面図。DD sectional drawing in FIG. 本発明の第１の実施形態に係る運動案内装置の循環部材を構成する分割体の変形例を説明するための図。The figure for demonstrating the modification of the division body which comprises the circulation member of the exercise | movement guide apparatus which concerns on the 1st Embodiment of this invention. 本発明の第２の実施形態に係る運動案内装置の循環部材の構造を説明するための一部拡大図。The partially expanded view for demonstrating the structure of the circulation member of the movement guide apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第２の実施形態に係る運動案内装置の循環部材を構成する第１の分割体を説明するための図。The figure for demonstrating the 1st division body which comprises the circulation member of the movement guide apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第２の実施形態に係る運動案内装置の循環部材を構成する第２の分割体を説明するための図。The figure for demonstrating the 2nd division body which comprises the circulation member of the exercise | movement guide apparatus which concerns on the 2nd Embodiment of this invention. 本発明の第３の実施形態に係るボールねじ装置を説明するための一部断面図。The partial cross section figure for demonstrating the ball screw apparatus which concerns on the 3rd Embodiment of this invention. 本発明の第３の実施形態に係るボールねじ装置の構造を説明するための断面図。Sectional drawing for demonstrating the structure of the ball screw apparatus which concerns on the 3rd Embodiment of this invention. 本発明の実施形態に係る循環部材の変形例を示す斜視図。The perspective view which shows the modification of the circulation member which concerns on embodiment of this invention.

以下、本発明に係る運動案内装置の実施形態について図面を参照しつつ説明する。なお、以下の実施形態は、各請求項に係る発明を限定するものではなく、また、実施形態の中で説明されている特徴の組み合わせの全てが発明の解決手段に必須であるとは限らない。   DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of a motion guide device according to the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

［第１の実施形態］
図１は、本発明の第１の実施形態に係る運動案内装置を示す斜視図であり、図２は、本発明の第１の実施形態に係る運動案内装置に用いられる移動部材の構造を説明するための分解図であり、図３は、本発明の第１の実施形態に係る運動案内装置に用いられる移動部材に組み付けられる循環部材の分解図であり、図４は、本発明の第１の実施形態に係る運動案内装置の循環部材を構成する分割体の斜視図であり、図５は、本発明の第１の実施形態に係る運動案内装置の循環部材を構成する分割体の正面図であり、図６は、図５におけるＡ−Ａ断面図であり、図７は、図５におけるＢ−Ｂ断面図であり、図８は、図５におけるＣ−Ｃ断面図であり、図９は、図５におけるＤ−Ｄ断面図であり、図１０は、本発明の第１の実施形態に係る運動案内装置の循環部材を構成する分割体の変形例を説明するための図である。 [First Embodiment]
FIG. 1 is a perspective view showing a motion guide device according to the first embodiment of the present invention, and FIG. 2 illustrates the structure of a moving member used in the motion guide device according to the first embodiment of the present invention. FIG. 3 is an exploded view of the circulation member assembled to the moving member used in the motion guide apparatus according to the first embodiment of the present invention, and FIG. 4 is the first view of the present invention. It is a perspective view of the division body which comprises the circulation member of the movement guide apparatus which concerns on this embodiment, FIG. 5: is a front view of the division body which comprises the circulation member of the movement guide apparatus which concerns on the 1st Embodiment of this invention. 6 is an AA sectional view in FIG. 5, FIG. 7 is a BB sectional view in FIG. 5, FIG. 8 is a CC sectional view in FIG. These are DD sectional drawing in FIG. 5, FIG. 10 is the exercise | movement guide which concerns on the 1st Embodiment of this invention. It is a diagram for explaining a modification of the split body constituting the circulation member of the location.

図１に示すように、本実施形態に係る運動案内装置は、長手方向に沿って延びる軌道部材１０と、この軌道部材１０に転動体３０を介して長手方向に往復運動可能に組み付けられた移動部材２０とを備えている。   As shown in FIG. 1, the motion guide apparatus according to the present embodiment includes a track member 10 extending along the longitudinal direction, and a movement assembled to the track member 10 through a rolling element 30 so as to be capable of reciprocating in the longitudinal direction. Member 20.

軌道部材１０は、断面矩形状に形成された部材であり、左右側面には、長手方向に沿って転動体転走面１１が形成されている。   The track member 10 is a member having a rectangular cross section, and rolling element rolling surfaces 11 are formed on the left and right side surfaces along the longitudinal direction.

移動部材２０は、軌道部材１０に組み付けられるように、断面コ字状に形成されたブロック本体２０ａと、ブロック本体２０ａの長手方向の両端部に組み付けられた蓋部２２とを備えている。図２に示すように、ブロック本体２０ａは、軌道部材１０の上面と対向する中央部２０ｂと、中央部２０ｂの両端から垂下して形成される一対の側壁部２０ｃとから形成されている。また、側壁部２０ｃには軌道部材１０に形成された転動体転走面１１と対向するように、長手方向に沿って負荷転動体転走面２１が形成されている。   The moving member 20 includes a block main body 20a formed in a U-shaped cross section so as to be assembled to the track member 10, and lid portions 22 assembled to both ends in the longitudinal direction of the block main body 20a. As shown in FIG. 2, the block main body 20 a is formed by a central portion 20 b that faces the upper surface of the track member 10, and a pair of side wall portions 20 c that are formed by hanging from both ends of the central portion 20 b. Moreover, the load rolling-element rolling surface 21 is formed in the side wall part 20c along the longitudinal direction so that the rolling-element rolling surface 11 formed in the track member 10 may be opposed.

また、側壁部２０ｃには、負荷転動体転走面２１と平行に貫通して形成された貫通孔２３が穿孔されており、該貫通孔２３には内部に転動体戻し路４０ａが形成された循環部材４０が挿入されている。さらに、蓋部２２のブロック本体２０ａと対向する端面には、図示しない方向転換路が形成されており、転動体転走面１１と負荷転動体転走面２１とからなる負荷転動体転走路及び循環部材４０に形成された転動体戻し路４０ａが方向転換路によって連結され、転動体３０の無限循環路を形成している。   Further, a through hole 23 is formed in the side wall portion 20c so as to penetrate in parallel with the loaded rolling element rolling surface 21, and a rolling element return path 40a is formed in the through hole 23. A circulation member 40 is inserted. Furthermore, the direction change path which is not shown in figure is formed in the end surface facing the block main body 20a of the cover part 22, The load rolling-element rolling path which consists of the rolling-element rolling surface 11 and the load rolling-element rolling surface 21, and The rolling element return path 40a formed in the circulation member 40 is connected by a direction change path to form an infinite circulation path of the rolling element 30.

転動体３０は、円筒状のローラを複数配列して構成されており、複数の転動体３０は、転動体連結帯３１によって一連に連結配列されている。なお、転動体連結帯３１は、隣接する転動体３０の間に介在される間座部と、間座部同士を連結する連結部とから形成されている。さらに、転動体連結帯３１は合成樹脂によって形成されており、無限循環路内で適宜屈曲可能なように可撓性を有している。   The rolling elements 30 are configured by arranging a plurality of cylindrical rollers. The plurality of rolling elements 30 are connected and arranged in series by rolling element connecting bands 31. In addition, the rolling element connection belt | band | zone 31 is formed from the spacer part interposed between the adjacent rolling elements 30, and the connection part which connects spacer parts. Furthermore, the rolling element coupling band 31 is formed of a synthetic resin, and has flexibility so that it can be appropriately bent in the infinite circulation path.

次に、図３から９を参照して、本実施形態に係る運動案内装置１に用いられる循環部材４０の構造について説明を行う。   Next, the structure of the circulation member 40 used in the motion guide device 1 according to the present embodiment will be described with reference to FIGS.

図３に示すように、本実施形態に係る循環部材４０は、一対の分割体４１ａ，４１ｂを互いに組み合わせて形成されるように循環部材４０が２分割されており、長手方向に貫通する転動体戻し路４０ａが形成された円柱状の部材である。転動体戻し路４０ａには、一対の帯状部材案内部４０ｂが形成されており、前述した転動体連結帯３１の転動体３０の転動に起因する移動を案内している。   As shown in FIG. 3, the circulating member 40 according to the present embodiment has the circulating member 40 divided into two so as to be formed by combining a pair of divided bodies 41 a and 41 b with each other, and is a rolling element that penetrates in the longitudinal direction. It is a cylindrical member in which the return path 40a is formed. A pair of strip-shaped member guide portions 40b is formed in the rolling element return path 40a, and guides the movement caused by the rolling of the rolling elements 30 of the rolling element coupling band 31 described above.

図４に示すように、分割体４１ａ，４１ｂにはその合わせ面４６に複数の凸部４２及び凹部４３が形成されており、図３のように、一方の分割体４１ａの当該凸部４２と他方の分割体４１ｂの凹部４３とを嵌合させることにより分割体４１ａ，４１ｂが互いに組み合
わされる。 As shown in FIG. 4, a plurality of convex portions 42 and concave portions 43 are formed on the mating surfaces 46 of the divided bodies 41a and 41b, and as shown in FIG. By fitting the recess 43 of the other divided body 41b, the divided bodies 41a and 41b are combined with each other.

複数の凸部４２及び凹部４３は、分割体４１ａ、４１ｂを互いに組み合わせるように分割体４１ａ，４１ｂの長手方向に沿って配列されている。また、複数の凸部４２は、第１の突起４２ａと、第１の突起４２ａよりも合わせ面４６の垂直方向に突出量が大きい第２の突起４２ｂとを有している。さらに、この第１の突起４２ａ及び第２の突起４２ｂに対応するように、複数の凹部４３は、第１の穴部４３ａと第２の穴部４３ｂとを有している。   The plurality of convex portions 42 and concave portions 43 are arranged along the longitudinal direction of the divided bodies 41a and 41b so that the divided bodies 41a and 41b are combined with each other. The plurality of convex portions 42 include a first protrusion 42a and a second protrusion 42b having a larger protrusion amount in the direction perpendicular to the mating surface 46 than the first protrusion 42a. Further, the plurality of recesses 43 have a first hole 43a and a second hole 43b so as to correspond to the first protrusion 42a and the second protrusion 42b.

図５に示すように、分割体４１ａ，４１ｂの一端には、第２の突起４２ｂが形成されており、他端には第２の穴部４３ｂが形成されている。なお、第１の突起４２ａ及び第１の穴部４３ａは第２の突起４２ｂ及び第２の穴部４３ｂの間に互い違いに配列されている。また、第１の突起４２ａ，第２の突起４２ｂ，第１の穴部４３ａ及び第２の穴部４３ｂは等ピッチに形成されておらず、第１の突起４２ａ及び第１の穴部４３ａは長手方向の中央寄りに配置されている。   As shown in FIG. 5, a second protrusion 42b is formed at one end of each of the divided bodies 41a and 41b, and a second hole 43b is formed at the other end. The first protrusions 42a and the first holes 43a are alternately arranged between the second protrusions 42b and the second holes 43b. The first protrusion 42a, the second protrusion 42b, the first hole 43a and the second hole 43b are not formed at an equal pitch, and the first protrusion 42a and the first hole 43a are It is arranged near the center in the longitudinal direction.

次に、図６から図９を参照して、第１の突起４２ａ，第２の突起４２ｂ，第１の穴部４３ａ及び第２の穴部４３ｂの形状について説明を行う。   Next, the shapes of the first protrusion 42a, the second protrusion 42b, the first hole 43a, and the second hole 43b will be described with reference to FIGS.

図６及び図７は、図５のＡ−Ａ断面及びＢ−Ｂ断面を示した図であり、第１の突起４２ａ及び第２の突起４２ｂの断面形状を示している。図６に示すように、第２の突起４２ｂの突出量ｈ1は、図７に示す第１の突起４２ａの突出量ｈ2と比べて突出量が大きく形成されている。また、第２の突起４２ｂの先端部にはテーパ角αのテーパ面４４が形成されている。テーパ角αは、第２の突起４２ｂが第２の穴部４３ｂに挿入される際の案内の役割を担っているので、円滑な挿入が可能であれば適宜角度を設定することが可能であるが、例えば２０°から６０°程度に形成すると好適である。また、第２の突起４２ｂの直径ｒ1は第１の突起４２ａの直径ｒ2よりも大きく形成されている。 6 and 7 are views showing the AA cross section and the BB cross section of FIG. 5, and show the cross sectional shapes of the first protrusion 42a and the second protrusion 42b. As shown in FIG. 6, the protrusion amount h 1 of the second protrusion 42b is larger than the protrusion amount h 2 of the first protrusion 42a shown in FIG. A tapered surface 44 having a taper angle α is formed at the tip of the second protrusion 42b. Since the taper angle α plays a role of guiding when the second protrusion 42b is inserted into the second hole 43b, the taper angle α can be appropriately set as long as smooth insertion is possible. However, for example, it is preferable to form at about 20 ° to 60 °. The diameter r 1 of the second protrusion 42b is formed larger than the diameter r 2 of the first protrusion 42a.

図８は、図５のＣ−Ｃ断面を、また図９は図５のＤ−Ｄ断面を示した図であり、第１の穴部４３ａ及び第２の穴部４３ｂの断面形状を示している。図８及び図９に示すように、第１の穴部４３ａ及び第２の穴部４３ｂは共に貫通孔として形成されている。また、合わせ面４６側の縁部には、面取りが施されており、第１の突起４２ａ及び第２の突起４２ｂを円滑に嵌合させることができるように形成されている。   8 is a cross-sectional view taken along the line CC in FIG. 5, and FIG. 9 is a cross-sectional view taken along the line DD in FIG. 5, showing the cross-sectional shapes of the first hole 43a and the second hole 43b. Yes. As shown in FIGS. 8 and 9, both the first hole 43a and the second hole 43b are formed as through holes. The edge portion on the mating surface 46 side is chamfered so that the first protrusion 42a and the second protrusion 42b can be smoothly fitted.

なお、図５に示すように、第１の穴部４３ａは、楕円形状に形成されており、第２の穴部４３ｂは円形状に形成されている。また、第２の穴部４３ｂの径は、第２の突起４２ｂの根元部の直径ｒ1よりも小さく形成されており、分割体４１ａ，４１ｂを組み合わせた
場合に、第２の突起４２ｂは、第２の穴部４３ｂに軽圧入されるように形成されている。なお、第１の穴部４３ａは軸方向に長い楕円形状に形成されており、且つ、第１の穴部４３ａの径が第１の突起４２ａの根元部の直径ｒ2よりも大きく形成されていることから、
互いに圧入されておらず、分割体４１ａ，４１ｂの長手方向の位置決めを容易に行うことができる。 As shown in FIG. 5, the first hole 43a is formed in an elliptical shape, and the second hole 43b is formed in a circular shape. Further, the diameter of the second hole portion 43b is formed smaller than the diameter r 1 of the root portion of the second protrusion 42b, the divided bodies 41a, when combined with 41b, the second protrusion 42b is It is formed so as to be lightly press-fitted into the second hole 43b. The first hole portion 43a is formed in a long oval shape in the axial direction and the diameter of the first hole portion 43a is formed larger than the diameter r 2 of the root portion of the first protrusion 42a Because
The parts 41a and 41b can be positioned in the longitudinal direction easily without being pressed into each other.

このように形成された分割体４１ａ，４１ｂは、第１の突起４２ａよりも突出量の大きな第２の突起４２ｂによって、分割体４１ａ，４１ｂ同士を嵌合させているので、圧入代を大きく取ることができる。また、分割体４１ａ，４１ｂの両端部に形成された第２の突起４２ｂと第２の穴部４３ｂとが互いに軽圧入されて組み合わされているので、事前に分割体４１ａ，４１ｂ同士を嵌合させて循環部材４０を組み立てておくことが可能となる。運動案内装置１の製造時の前段取りを可能とし、製造コストの抑制を図ることが可能となる。   Since the divided bodies 41a and 41b formed in this way are fitted to each other by the second protrusions 42b having a larger protrusion amount than the first protrusions 42a, a large press-fitting allowance is taken. be able to. In addition, since the second protrusions 42b and the second holes 43b formed on both ends of the divided bodies 41a and 41b are lightly press-fitted together, the divided bodies 41a and 41b are fitted together in advance. Thus, the circulation member 40 can be assembled. It is possible to perform pre-setup at the time of manufacturing the motion guide device 1 and to reduce the manufacturing cost.

次に、本実施形態に係る運動案内装置１の変形例について説明を行う。上述した実施形態においては、図３に示すように、第２の穴部４３ｂを合わせ面４６に対して貫通孔で形成した場合について説明したが、本変形例に係る分割体４１ａ´，４１ｂ´は、図１０に示すように、合わせ面４６の反対方向に突出するボス部４５を形成している。また、ボス部４５には、ボス部４５を軸方向に貫通する第２の穴部４３ｂ´が形成されている。   Next, a modified example of the motion guide apparatus 1 according to the present embodiment will be described. In the above-described embodiment, as illustrated in FIG. 3, the case where the second hole portion 43 b is formed as a through hole with respect to the mating surface 46 has been described. However, the divided bodies 41 a ′ and 41 b ′ according to this modification example. As shown in FIG. 10, a boss portion 45 protruding in the opposite direction of the mating surface 46 is formed. The boss portion 45 is formed with a second hole portion 43b ′ that penetrates the boss portion 45 in the axial direction.

このように本変形例に係る分割体４１ａ´，４１ｂ´は、第２の穴部４３ｂ´にボス部４５を形成しているので、第２の突起４２ｂと第２の穴部４３ｂ´との圧入代を大きく取ることが可能となることから、互いの嵌合をより強固に行うことができるので、分割体４１ａ´，４１ｂ´をより確実に組み合わせることが可能となる。   As described above, since the divided bodies 41a ′ and 41b ′ according to the present modification form the boss portion 45 in the second hole portion 43b ′, the second protrusion portion 42b and the second hole portion 43b ′ are formed. Since it is possible to make a large press-fitting allowance, it is possible to more firmly engage each other, so it is possible to more reliably combine the divided bodies 41a ′ and 41b ′.

［第２の実施形態］
以上説明した第１の実施形態においては、本発明に係る循環部材４０が転動体戻し路４０ａを構成する場合について説明を行った。次に説明する第２の実施形態は、第１の実施例とは異なる構成の循環部材４０´について説明を行うものである。なお、上述した第１の実施形態の場合と同一又は類似する部材については、同一符号を付して説明を省略する。 [Second Embodiment]
In 1st Embodiment described above, the case where the circulation member 40 which concerns on this invention comprises the rolling element return path 40a was demonstrated. In the second embodiment to be described next, a circulation member 40 ′ having a configuration different from that of the first embodiment will be described. Note that members that are the same as or similar to those in the first embodiment described above are given the same reference numerals, and descriptions thereof are omitted.

図１１は、本発明の第２の実施形態に係る運動案内装置の循環部材の構造を説明するための一部拡大図であり、図１２は、本発明の第２の実施形態に係る運動案内装置の循環部材を構成する第１の分割体を説明するための図であり、図１３は、本発明の第２の実施形態に係る運動案内装置の循環部材を構成する第２の分割体を説明するための図である。   FIG. 11 is a partially enlarged view for explaining the structure of the circulation member of the motion guide device according to the second embodiment of the present invention, and FIG. 12 shows the motion guide according to the second embodiment of the present invention. It is a figure for demonstrating the 1st division body which comprises the circulation member of an apparatus, FIG. 13: shows the 2nd division body which comprises the circulation member of the exercise | movement guide apparatus which concerns on the 2nd Embodiment of this invention. It is a figure for demonstrating.

図１１に示すように、本実施形態に係る循環部材４０´は、転動体戻し路４０ａと、方向転換路２２ｂとが一体に形成され、略Ｊ字状に形成されている。本実施形態に係る循環部材４０´は、第１の実施形態に係る循環部材４０と同様に、長手方向に沿って２分割に分割された第１の分割体４１ｃと第２の分割体４１ｄとを互いに組み合わせて形成されている。   As shown in FIG. 11, in the circulation member 40 ′ according to the present embodiment, the rolling element return path 40 a and the direction changing path 22 b are integrally formed, and are formed in a substantially J shape. Like the circulation member 40 according to the first embodiment, the circulation member 40 ′ according to the present embodiment includes a first divided body 41c and a second divided body 41d that are divided into two along the longitudinal direction. Are formed in combination with each other.

図１２に示すように、第１の分割体４１ｃは、長手方向に沿って延設された転動体戻し路４０ａと、該転動体戻し路４０ａの一端と連続する方向転換路２２ｂとを備えている。また、方向転換路２２ｂの開放端には、ローラ掬い部５０が形成されており、該ローラ掬い部５０によって、負荷転動体転走路を転走する転動体３０を方向転換路２２ｂ内に導入する作用を奏する。   As shown in FIG. 12, the 1st division body 41c is provided with the rolling element return path 40a extended along the longitudinal direction, and the direction change path 22b continuous with the end of this rolling element return path 40a. Yes. Moreover, the roller scooping part 50 is formed in the open end of the direction change path 22b, and the roller scooping part 50 introduces the rolling element 30 rolling on the load rolling element rolling path into the direction change path 22b. Has an effect.

なお、このローラ掬い部５０は、循環部材４０´の分割面に沿って分割されておらず、合わせ面４６から突出して形成されている。このように形成することで、ローラ掬い部５０と転動体３０が直接接触する箇所に分割面を形成することを回避でき、ローラ掬い部５０の剛性の向上やローラ掬い部５０での転動体３０の姿勢乱れを防止することができる。   The roller scooping portion 50 is not divided along the dividing surface of the circulation member 40 ′ but is formed so as to protrude from the mating surface 46. By forming the roller scooping portion 50 in this way, it is possible to avoid the formation of a split surface where the roller scooping portion 50 and the rolling element 30 are in direct contact with each other. Can prevent posture disorder.

さらに、合わせ面４６には、第１の穴部４３ａ，第２の穴部４３ｂ，第３の穴部４３ｃが夫々形成されている。第１の穴部４３ａは、転動体戻し路４０ａの両側縁に互い違いに配置されており、長手方向に沿った長穴形状に形成されている。   Further, the mating surface 46 is formed with a first hole 43a, a second hole 43b, and a third hole 43c, respectively. The 1st hole part 43a is alternately arrange | positioned at the both-sides edge of the rolling element return path 40a, and is formed in the elongate hole shape along a longitudinal direction.

第２の穴部４３ｂは、転動体戻し路４０ａと方向転換路２２ｂの連続する位置に形成されており、上述した第１の穴部４３ａと同様に長手方向に沿った長穴形状に形成されている。さらに、第３の穴部４３ｃは、ローラ掬い部５０の端面に形成されており、第１の穴部４３ａ及び第２の穴部４３ｂと略直交する方向に沿った長穴形状に形成されている。   The second hole 43b is formed at a position where the rolling element return path 40a and the direction changing path 22b are continuous, and is formed in an elongated hole shape along the longitudinal direction, similar to the first hole 43a described above. ing. Further, the third hole 43c is formed on the end surface of the roller scooping part 50, and is formed in a long hole shape along a direction substantially orthogonal to the first hole 43a and the second hole 43b. Yes.

このように、第１及び第２の穴部４３ａ，４３ｂと第３の穴部４３ｃとの長穴形状を形成することで、第１及び第２の穴部４３ａ，４３ｂによって第１の分割体４１ｃ及び第２の分割体４１ｄの幅方向に沿った相対位置の規制を行うことができ、第３の穴部４３ｃによって第１の分割体４１ｃ及び第２の分割体４１ｄの長手方向に沿った相対位置の規制を行うことができる。   In this way, the first divided body is formed by the first and second hole portions 43a and 43b by forming the elongated hole shape of the first and second hole portions 43a and 43b and the third hole portion 43c. The relative positions along the width direction of 41c and the second divided body 41d can be regulated, and the third hole portion 43c along the longitudinal direction of the first divided body 41c and the second divided body 41d. The relative position can be regulated.

次に図１３に示すように、第２の分割体４１ｄの外郭形状は、第１の分割体４１ｃと鏡面対称に形成されており、長手方向に沿って延設された転動体戻し路４０ａと、該転動体戻し路４０ａの一端と連続する方向転換路２２ｂとを備えている。なお、第２の分割体４１ｄには、方向転換路２２ｂの開放端にローラ掬い部５０が形成されていない。   Next, as shown in FIG. 13, the outer shape of the second divided body 41d is formed mirror-symmetrically with the first divided body 41c, and the rolling element return path 40a extended along the longitudinal direction. The rolling element return path 40a includes a direction change path 22b that is continuous with one end of the rolling element return path 40a. In the second divided body 41d, the roller scooping portion 50 is not formed at the open end of the direction changing path 22b.

合わせ面４６には、第１の穴部４３ａ，第２の穴部４３ｂ，第３の穴部４３ｃと対向する位置に夫々第１の突起４２ａ，第２の突起４２ｂ，第３の突起４２ｃが形成されている。上述した第１の実施形態に係る循環部品４０と同様に、第２の突起４２ｂは、第１の突起４２ａよりも突出量が大きく形成されている。これに対し、第３の突起４２ｃは、第２の突起４２ｂよりも更に大きく突出しており、更にその径も第１及び第２の突起４２ａ，４２ｂよりも大径に形成されている。なお、第１から第３の突起４２ａ，４２ｂ，４２ｃの先端は、第１から第３の穴部４３ａ，４３ｂ，４３ｃに挿入し易いようにテーパ状に形成されている。   On the mating surface 46, a first protrusion 42a, a second protrusion 42b, and a third protrusion 42c are provided at positions facing the first hole 43a, the second hole 43b, and the third hole 43c, respectively. Is formed. Similar to the circulation component 40 according to the first embodiment described above, the second protrusion 42b is formed to have a larger protrusion than the first protrusion 42a. On the other hand, the third protrusion 42c protrudes larger than the second protrusion 42b, and has a diameter larger than that of the first and second protrusions 42a and 42b. The tips of the first to third protrusions 42a, 42b, and 42c are tapered so that they can be easily inserted into the first to third holes 43a, 43b, and 43c.

このように形成された第１の分割体４１ｃ及び第２の分割体４１ｄは、第１の突起４２ａよりも突出量の大きな第２の突起４２ｂによって、第１の分割体４１ｃ及び第２の分割体４１ｄを嵌合させているので、圧入代を大きく取ることができる。また、第１の分割体４１ｃ及び第２の分割体４１ｄの転動体戻し路４０ａと方向転換路２２ｂとの連続する位置に形成された第２の突起４２ｂと第２の穴部４３ｂとが互いに軽圧入されて組み合わされているので、事前に第１の分割体４１ｃ及び第２の分割体４１ｄを嵌合させて循環部材４０´を組み立てておくことが可能となる。運動案内装置１の製造時の前段取りを可能とし、製造コストの抑制を図ることが可能となる。   The first divided body 41c and the second divided body 41d formed in this way are divided into the first divided body 41c and the second divided body by the second protrusion 42b having a larger protruding amount than the first protrusion 42a. Since the body 41d is fitted, a large press-fitting allowance can be taken. In addition, the second protrusion 42b and the second hole 43b formed at a position where the rolling element return path 40a and the direction changing path 22b of the first divided body 41c and the second divided body 41d are continuous are mutually connected. Since they are lightly press-fitted and combined, it is possible to assemble the circulation member 40 'by fitting the first divided body 41c and the second divided body 41d in advance. It is possible to perform pre-setup at the time of manufacturing the motion guide device 1 and to reduce the manufacturing cost.

また、本実施形態に係る循環部材４０´は、方向転換路２２ｂを一体に形成しているので、方向転換路２２ｂの構成に伴う部品点数の増加を抑制することができる。さらに、方向転換路２２ｂの開放端に形成されたローラ掬い部５０は、第１の分割体４１ｃにのみ形成され、第１及び第２の突部４２ａ，４２ｂよりも長く且つ大径の第３の突起４２ｃによって嵌合されているので、第１の分割体４１ｃ及び第２の分割体４１ｄの連結強度を向上させることができ、転動体の掬い上げの際に生じる荷重に対しても十分な強度を有する。   Moreover, since circulation member 40 'which concerns on this embodiment forms the direction change path 22b integrally, it can suppress the increase in the number of parts accompanying the structure of the direction change path 22b. Furthermore, the roller scooping portion 50 formed at the open end of the direction changing path 22b is formed only in the first divided body 41c, and is longer than the first and second projecting portions 42a and 42b and has a larger diameter. Since the projections 42c are fitted, the connection strength of the first divided body 41c and the second divided body 41d can be improved, and sufficient for the load generated when the rolling elements are scooped up. Has strength.

［第３の実施形態］
以上説明した第１及び第２の実施形態においては、本発明に係る循環部材４０を運動案内装置１に適用した場合について説明を行った。次に説明する第２の実施形態は、本発明に係る循環部材４０をボールねじ装置２に適用した場合について説明を行うものである。なお、上述した第１の実施形態の場合と同一又は類似する部材については、同一符号を付して説明を省略する。 [Third Embodiment]
In 1st and 2nd embodiment demonstrated above, the case where the circulation member 40 which concerns on this invention was applied to the exercise | movement guide apparatus 1 was demonstrated. In the second embodiment to be described next, the case where the circulation member 40 according to the present invention is applied to the ball screw device 2 will be described. Note that members that are the same as or similar to those in the first embodiment described above are given the same reference numerals, and descriptions thereof are omitted.

図１４は、本発明の第３の実施形態に係るボールねじ装置を説明するための一部断面図であり、図１５は、第３の実施形態に係るボールねじ装置の構造を説明するための断面図である。   FIG. 14 is a partial cross-sectional view for explaining a ball screw device according to a third embodiment of the present invention, and FIG. 15 is a diagram for explaining the structure of the ball screw device according to the third embodiment. It is sectional drawing.

図１４に示すように、本実施形態に係るボールねじ装置２は、外周面に所定のリードで螺旋状の転動体転走溝１１´が形成されたねじ軸１０´と、複数の転動体３０を介してねじ軸１０´に螺合すると共に、転動体３０の無限循環路を備えたナット部材２０´とから構成されている。これらねじ軸１０´とナット部材２０´の相対的な回転によりナット部材２０´がねじ軸１０´の軸方向へ往復運動可能に構成されている。   As shown in FIG. 14, the ball screw device 2 according to the present embodiment includes a screw shaft 10 ′ in which a spiral rolling element rolling groove 11 ′ is formed with a predetermined lead on the outer peripheral surface, and a plurality of rolling elements 30. And a nut member 20 ′ having an infinite circulation path for the rolling element 30. The relative rotation of the screw shaft 10 ′ and the nut member 20 ′ allows the nut member 20 ′ to reciprocate in the axial direction of the screw shaft 10 ′.

図１５に示すように、ナット部材２０´は、ねじ軸１０´が貫通するねじ軸貫通孔２０ａ´を有する略円筒状に形成されている。また、ナット部材２０´には、内周面にねじ軸１０´に形成された螺旋状の転動体転走溝１１´と対向して螺旋状の負荷転動体転走路を構成する螺旋状の負荷転動体転走溝２１´が形成されると共に、ねじ軸貫通孔２０ａ´と平行して延びる、循環部材４０を挿入するための貫通孔２３´が形成されている。   As shown in FIG. 15, the nut member 20 ′ is formed in a substantially cylindrical shape having a screw shaft through hole 20 a ′ through which the screw shaft 10 ′ passes. Further, the nut member 20 'has a spiral load that forms a spiral load rolling element rolling path facing the spiral rolling element rolling groove 11' formed on the screw shaft 10 'on the inner peripheral surface. A rolling element rolling groove 21 ′ is formed and a through hole 23 ′ for inserting the circulation member 40 extending in parallel with the screw shaft through hole 20 a ′ is formed.

また、ナット部材２０´の両端部には、そのナット部材２０´の端面と対向する面に負荷転動体転走路と転動体戻し路とをつなぐ一対の方向転換路２２ａが形成された蓋部２２´が組み付けられている。これによって、負荷転動体転走路と転動体戻し路２３´と一対の方向転換路２２ａがつながることにより、転動体３０の無限循環路を形成している。   Further, at both end portions of the nut member 20 ', a lid portion 22 is formed with a pair of direction changing paths 22a that connect the load rolling element rolling path and the rolling element return path to the surface facing the end face of the nut member 20'. ´ is assembled. Thereby, the endless circulation path of the rolling element 30 is formed by connecting the load rolling element rolling path, the rolling element return path 23 ′, and the pair of direction changing paths 22 a.

転動体３０は、ボールで構成されており、隣接する転動体３０の間には転動体３０同士が互いに接触することを防止するように、合成樹脂からなるスペーサ３１´が介在している。なお、スペーサ３１´は、第１の実施形態において説明した連結帯３１と異なり、互いに分離している。   The rolling elements 30 are composed of balls, and spacers 31 ′ made of synthetic resin are interposed between the adjacent rolling elements 30 so as to prevent the rolling elements 30 from contacting each other. Note that the spacers 31 ′ are separated from each other unlike the connection band 31 described in the first embodiment.

ねじ軸１０´には、転動体転走溝１１´が２条形成されており、これに対応してナット部材２０´に形成された転動体戻し路２３´も２条形成されている。このように構成することで、本実施形態に係るボールねじ装置２は、合計２条の無限循環路を有している。   Two rolling element rolling grooves 11 ′ are formed on the screw shaft 10 ′, and correspondingly, two rolling element return paths 23 ′ formed on the nut member 20 ′ are also formed. By comprising in this way, the ball screw apparatus 2 which concerns on this embodiment has a total of 2 infinite circuit.

また、循環部材４０は、上述した第１の実施形態で説明した部材と同一であるので、説
明を省略する。 Moreover, since the circulation member 40 is the same as the member demonstrated in 1st Embodiment mentioned above, description is abbreviate | omitted.

このように構成された、本実施形態に係るボールねじ装置２は、循環部材４０を分割体によって構成し、第１の突起４２ａよりも突出量の大きな第２の突起４２ｂによって、分割体同士を組み合わせているので、圧入代を大きく取ることができると共に、分割体４１ａ，４１ｂの両端部に形成された第２の突起４２ｂと第２の穴部４３ｂとが互いに軽圧入されて組み合わされているので、事前に分割体４１ａ，４１ｂ同士を組み合わせて循環部材４０を組み立てておくことが可能となるので、ボールねじ装置２の製造時の前段取りを可能とし、製造コストの抑制を図ることが可能となる。   In the ball screw device 2 according to the present embodiment configured as described above, the circulation member 40 is configured by a divided body, and the divided bodies are separated from each other by the second protrusion 42b having a larger protruding amount than the first protrusion 42a. Since they are combined, the press-fitting allowance can be increased, and the second protrusions 42b and the second holes 43b formed at both ends of the divided bodies 41a and 41b are lightly press-fitted together and combined. Therefore, since it becomes possible to assemble the circulating member 40 by combining the divided bodies 41a and 41b in advance, it is possible to perform pre-setup during the manufacture of the ball screw device 2 and to reduce the manufacturing cost. It becomes.

また、本実施形態に係る循環部材４０は、第１の突起及び第２の突起並びに第１の穴部及び第２の穴部を其々一対ずつ形成した場合について説明したが、これらの数は分割体４１ａ，４１ｂの長さに応じて適宜変更することができる。   Moreover, although the circulation member 40 which concerns on this embodiment demonstrated the case where a 1st protrusion, a 2nd protrusion, a 1st hole part, and a 2nd hole part were formed in pairs, respectively, these numbers are It can be appropriately changed according to the length of the divided bodies 41a and 41b.

また、本実施形態に係る循環部材４０は、分割体４１ａ，４１ｂの長手方向の左右両側に複数の凸部及び凹部を配列した場合について説明したが、分割体の幅寸法が小さいなど、複数の凸部及び凹部の配置スペースを十分に確保できない場合には、図１３に示すように、転動体戻し路４０ａの長手方向の一方側のみに複数の凸部及び凹部を配列して形成しても構わない。   Moreover, although the circulation member 40 according to the present embodiment has been described for the case where a plurality of convex portions and concave portions are arranged on the left and right sides in the longitudinal direction of the divided bodies 41a and 41b, If a sufficient space for arranging the convex portions and the concave portions cannot be secured, a plurality of convex portions and concave portions may be arranged and formed only on one side in the longitudinal direction of the rolling element return path 40a as shown in FIG. I do not care.

また、本実施形態に係る循環部材４０は、第１の突起，第２の突起，第１の穴部及び第２の穴部を不等ピッチに配列した場合について説明を行ったが、これらを等間隔に配置しても構わない。その様な変更又は改良を加えた形態も本発明の技術的範囲に含まれうることが、特許請求の範囲の記載から明らかである。   In addition, the circulation member 40 according to the present embodiment has been described for the case where the first protrusion, the second protrusion, the first hole, and the second hole are arranged at unequal pitches. You may arrange | position at equal intervals. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

１ 運動案内装置， ２ ボールねじ装置， １０ 軌道部材， １０´ ねじ軸， １１ 転動体転走面， １１´ 転動体転走溝， ２０ 移動部材， ２０´ ナット部材， ２１ 負荷転動体転走面， ２１´ 負荷転動体転走溝， ２２ｂ 方向転換路， ２３ 貫通孔， ３０ 転動体， ４０ 循環部材， ４１ａ，４１ｂ，４１ｃ，４１ｄ，４１ａ´，４１ｂ´ 分割体， ４２ 凸部， ４２ａ 第１の突起， ４２ｂ 第２の突起， 第３の突起 ４２ｃ， ４３ 凹部， ４３ａ 第１の穴部， ４３ｂ 第２の穴部， 第３の穴部 ４３ｃ， ４５ ボス部， ４６ 合わせ面。   DESCRIPTION OF SYMBOLS 1 Movement guide apparatus, 2 Ball screw apparatus, 10 Track member, 10 'Screw shaft, 11 Rolling body rolling surface, 11' Rolling body rolling groove, 20 Moving member, 20 'Nut member, 21 Load rolling body rolling surface , 21 'Load rolling element rolling groove, 22b direction change path, 23 through hole, 30 rolling element, 40 circulating member, 41a, 41b, 41c, 41d, 41a', 41b 'divided body, 42 convex part, 42a first Projection, 42b second projection, third projection 42c, 43 recess, 43a first hole portion, 43b second hole portion, third hole portion 43c, 45 boss portion, 46 mating surface.

Claims (8)

長手方向に転動体転走面を有する軌道部材と、
前記転動体転走面に対向する負荷転動体転走面と、前記負荷転動体転走面と平行して延びる転動体戻し路とが形成された移動部材と、
前記移動部材の両端部に設置される一対の蓋体と、
前記転動体転走面と前記負荷転動体転走面とから構成される負荷転動体転走路と、前記転動体戻し路をつなぐ方向転換路を有する運動案内装置に組み込まれる循環部材であって、
前記転動体戻し路、前記負荷転動体転走路及び一対の前記方向転換路とから構成される無限循環路に含まれる循環部材は、少なくとも二つの分割体を互いに組み合わせてなり、
前記分割体の合わせ面には、互いに係合する複数の凸部及び凹部が形成され、前記複数の凸部は第１の突起と前記第１の突起よりも合わせ面の垂直方向に突出量が大きい第２の突起とを有することを特徴とする循環部材。 A raceway member having a rolling element rolling surface in the longitudinal direction;
A moving member formed with a loaded rolling element rolling surface facing the rolling element rolling surface and a rolling element return path extending parallel to the loaded rolling element rolling surface;
A pair of lids installed at both ends of the moving member;
A circulating member incorporated in a motion guide device having a loaded rolling element rolling path composed of the rolling element rolling surface and the loaded rolling element rolling surface, and a direction changing path connecting the rolling element return path,
The circulation member included in the infinite circulation path composed of the rolling element return path, the load rolling element rolling path and the pair of direction changing paths is formed by combining at least two divided bodies with each other.
A plurality of convex portions and concave portions that are engaged with each other are formed on the mating surface of the divided body, and the plurality of convex portions have a projection amount in a direction perpendicular to the mating surface from the first projection and the first projection. A circulating member having a large second protrusion. 請求項１に記載の循環部材において、
前記第２の突起は、先端部にテーパ面が形成され、
前記複数の凹部は、それぞれ、前記第１の突起に対応する第１の穴部と、前記第２の突起に対応する第２の穴部を備え、前記第２の穴部の径は、前記第２の突起の根元部の径よりも小さいことを特徴とする循環部材。 The circulating member according to claim 1,
The second protrusion has a tapered surface at the tip,
Each of the plurality of recesses includes a first hole corresponding to the first protrusion and a second hole corresponding to the second protrusion, and the diameter of the second hole is A circulating member having a diameter smaller than a diameter of a root portion of the second protrusion. 請求項１又は２に記載の循環部材において、
前記第２の突起は前記第１の突起よりも径が大きく形成されることを特徴とする循環部材。 In the circulation member according to claim 1 or 2,
The circulating member, wherein the second protrusion has a diameter larger than that of the first protrusion. 請求項２又は３に記載の循環部材において、
前記第２の穴部は、前記分割体の合わせ面と反対方向に突出するボス部を備えることを特徴とする循環部材。 In the circulation member according to claim 2 or 3,
The circulating member, wherein the second hole portion includes a boss portion that protrudes in a direction opposite to the mating surface of the divided body. 請求項１に記載の循環部材において、
前記循環部材は、前記転動体戻し路と前記方向転換路とが一体に構成されていることを特徴とする循環部材。 The circulating member according to claim 1,
The circulating member is characterized in that the rolling element return path and the direction changing path are integrally formed. 請求項５に記載の循環部材において、
前記分割体の合わせ面には、前記方向転換路を構成する方向転換路分割部を互いに係合する第３の突起及び、当該第３の突起に対向する第３の穴部が形成されることを特徴とする循環部材。 The circulating member according to claim 5,
The mating surfaces of the divided bodies are formed with a third protrusion that engages with the direction change path dividing portions that constitute the direction change path, and a third hole that faces the third protrusion. A circulation member characterized by. 請求項１から６のいずれか１項に記載の循環部材を組み込んでなる運動案内装置。   A motion guide device incorporating the circulating member according to claim 1. 外周面に螺旋状の転動体転走溝が形成されたねじ軸と、
このねじ軸が貫通する貫通孔を有して略円筒状に形成されると共に、複数の転動体を介して前記ねじ軸に螺合し、内周面には前記転動体転走溝と対向して螺旋状の負荷転動体転走路を構成する螺旋状の負荷転動体転走溝が形成され、更に、前記貫通孔と平行して延びる転動体戻し路とが形成されたナット部材と、
前記ナット部材の両端部に設置されると共に、前記負荷転動体転走路と前記転動体戻し路をつなぐ方向転換路を有する蓋部とを備えるボールねじ装置であって、
前記転動体戻し路、前記負荷転動体転走路及び一対の前記方向転換路とから構成される無限循環路に含まれる循環部材は、少なくとも二つの分割体を互いに組み合わせてなり、
前記分割体の合わせ面には、互いに係合する複数の凸部及び凹部が形成され、前記複数の凸部は第１の突起と前記第１の突起よりも合わせ面の垂直方向に突出量が大きい第２の突起とを有することを特徴とするボールねじ装置。 A screw shaft having a spiral rolling element rolling groove formed on the outer peripheral surface;
The screw shaft has a through-hole through which the screw shaft passes and is formed in a substantially cylindrical shape. The screw shaft is screwed into the screw shaft through a plurality of rolling elements, and the inner peripheral surface faces the rolling element rolling groove. A helical load rolling element rolling groove forming a spiral loaded rolling element rolling path, and a nut member formed with a rolling element return path extending in parallel with the through hole;
A ball screw device provided with both ends of the nut member, and a lid portion having a direction change path connecting the load rolling element rolling path and the rolling element return path,
The circulation member included in the infinite circulation path composed of the rolling element return path, the load rolling element rolling path and the pair of direction changing paths is formed by combining at least two divided bodies with each other.
A plurality of convex portions and concave portions that are engaged with each other are formed on the mating surface of the divided body, and the plurality of convex portions have a projection amount in a direction perpendicular to the mating surface from the first projection and the first projection. A ball screw device having a large second protrusion.
JP2012236002A 2011-10-28 2012-10-25 Circulating member, motion guide device, ball screw device Active JP6118532B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012236002A JP6118532B2 (en) 2011-10-28 2012-10-25 Circulating member, motion guide device, ball screw device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011237235 2011-10-28
JP2011237235 2011-10-28
JP2012236002A JP6118532B2 (en) 2011-10-28 2012-10-25 Circulating member, motion guide device, ball screw device

Publications (2)

Publication Number Publication Date
JP2013108621A true JP2013108621A (en) 2013-06-06
JP6118532B2 JP6118532B2 (en) 2017-04-19

Family

ID=48705564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012236002A Active JP6118532B2 (en) 2011-10-28 2012-10-25 Circulating member, motion guide device, ball screw device

Country Status (1)

Country Link
JP (1) JP6118532B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015206456A (en) * 2014-04-10 2015-11-19 Thk株式会社 rolling device
CN109642609A (en) * 2016-09-02 2019-04-16 日本轴承有限公司 Linear motion device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0972335A (en) * 1995-09-06 1997-03-18 Nippon Thompson Co Ltd Direct-acting rolling guide unit
WO2003021133A1 (en) * 2001-09-04 2003-03-13 Thk Co., Ltd. Ball screw device
JP2006002870A (en) * 2004-06-18 2006-01-05 Nsk Ltd Straight motion guide bearing device
JP2006105296A (en) * 2004-10-06 2006-04-20 Shangyin Sci & Technol Co Ltd Roller type linear guide way

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0972335A (en) * 1995-09-06 1997-03-18 Nippon Thompson Co Ltd Direct-acting rolling guide unit
WO2003021133A1 (en) * 2001-09-04 2003-03-13 Thk Co., Ltd. Ball screw device
JP2006002870A (en) * 2004-06-18 2006-01-05 Nsk Ltd Straight motion guide bearing device
JP2006105296A (en) * 2004-10-06 2006-04-20 Shangyin Sci & Technol Co Ltd Roller type linear guide way

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015206456A (en) * 2014-04-10 2015-11-19 Thk株式会社 rolling device
CN106164510A (en) * 2014-04-10 2016-11-23 Thk株式会社 Tourelle
TWI624604B (en) * 2014-04-10 2018-05-21 Thk Co Ltd Turning device
CN106164510B (en) * 2014-04-10 2018-10-30 Thk株式会社 Tourelle
US10393244B2 (en) 2014-04-10 2019-08-27 Thk Co., Ltd. Rolling device
CN109642609A (en) * 2016-09-02 2019-04-16 日本轴承有限公司 Linear motion device

Also Published As

Publication number Publication date
JP6118532B2 (en) 2017-04-19

Similar Documents

Publication Publication Date Title
US8360644B2 (en) Linear motion guide unit with cage
JP6118532B2 (en) Circulating member, motion guide device, ball screw device
KR101551615B1 (en) Motion guide device
JP2007092898A (en) Rolling element-storing belt for linear guide device and linear guide device
WO2007023780A1 (en) Rolling element screw device and method of assembling the same
US10837491B2 (en) Multi-row rolling element housing band and motion guide apparatus
JP5721769B2 (en) Rolling guide device
US9297415B2 (en) Linear actuator
JP6351488B2 (en) Rolling device
JP5265793B1 (en) Rolling guide device
TW201400721A (en) Roller, and rolling guide device using roller
JP5872398B2 (en) Rolling guide device
JP4340547B2 (en) Guide unit with built-in roller chain
EP1959148A2 (en) Linear guide apparatus and rolling elements accomodation belt
JP4556830B2 (en) Rolling body accommodation belt for linear motion guide device and linear motion guide device
JP2012241749A (en) Motion guide device
JP4501862B2 (en) Rolling element housing belt and linear motion guide device
CN114076150A (en) Circulating channel structure of crossed roller linear rail
JP2013087936A (en) Linear motion device
TWI576520B (en) Screwless linear slide
JP6855792B2 (en) How to assemble the linear motion guide device
JP2017211015A (en) Rolling guide device
JP2007132403A (en) Rolling element storage belt for rectilinear guide device, and rectilinear guide device
KR200439669Y1 (en) Fixing structure for a deflector of a ball screw
WO2015125830A1 (en) Motion guidance device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20151008

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20160707

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20160809

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20161007

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20170314

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20170327

R150 Certificate of patent or registration of utility model

Ref document number: 6118532

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250