JP5872398B2 - Rolling guide device - Google Patents

Rolling guide device Download PDF

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JP5872398B2
JP5872398B2 JP2012149420A JP2012149420A JP5872398B2 JP 5872398 B2 JP5872398 B2 JP 5872398B2 JP 2012149420 A JP2012149420 A JP 2012149420A JP 2012149420 A JP2012149420 A JP 2012149420A JP 5872398 B2 JP5872398 B2 JP 5872398B2
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rolling
rolling element
ball
path
guide
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JP2013050206A (en
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高橋 徹
徹 高橋
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THK Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00Bearings for parts moving only linearly
    • F16C29/04Ball or roller bearings
    • F16C29/06Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0611Details 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00Bearings for parts moving only linearly
    • F16C29/04Ball or roller bearings
    • F16C29/06Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0604Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section
    • F16C29/0607Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section of parts or members for retaining the rolling elements, i.e. members to prevent the rolling elements from falling out of the bearing body or carriage
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00Bearings for parts moving only linearly
    • F16C29/04Ball or roller bearings
    • F16C29/06Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0609Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00Bearings for parts moving only linearly
    • F16C29/04Ball or roller bearings
    • F16C29/06Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/0638Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls
    • F16C29/0642Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls
    • F16C29/0647Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with balls with four rows of balls with load directions in X-arrangement

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

Description

本発明は、転動体が無限循環する構造の転がり案内装置に関し、特に転動体が転動体連結部材により連結された構成の転がり案内装置に関する。   The present invention relates to a rolling guide apparatus having a structure in which rolling elements circulate infinitely, and more particularly to a rolling guide apparatus having a configuration in which rolling elements are connected by a rolling element connecting member.

転がり案内装置の構成として、移動部材としての移動ブロックと軌道部材としての案内レールとが複数の転動体を介して相対移動自在に組み付けられ、各転動体が無限循環路内を循環することにより、例えば、移動ブロックが可動側とされて案内レール上を移動する構成が知られている(特許文献1参照)。   As a configuration of the rolling guide device, a moving block as a moving member and a guide rail as a track member are assembled so as to be relatively movable via a plurality of rolling elements, and each rolling element circulates in an infinite circulation path, For example, a configuration is known in which the moving block is movable and moves on a guide rail (see Patent Document 1).

転動体が循環する無限循環路は、案内レールに設けられた転動体転走面及びこれに対向するように移動ブロックに設けられた負荷転動体転走面により形成される負荷転動体転走路と、移動ブロックに設けられる転動体戻り通路と、同じく移動ブロックに設けられ、該負荷転動体転走路と転動体戻り通路とを連通する一対の方向転換路と、によって形成される。   The infinite circulation path through which the rolling elements circulate is a rolling element rolling path formed on the rolling element rolling surface provided on the guide rail and a loaded rolling element rolling surface provided on the moving block so as to face the rolling element rolling surface. The rolling element return path provided in the moving block and the pair of direction changing paths provided in the moving block and communicating with the load rolling element rolling path and the rolling element return path.

転動体としては例えばボールが用いられる。各ボールは、転動体連結部材としてのリテーナによって連結され、整列される。このリテーナは、例えば、隣接するボール間にそれぞれ配置される複数のスペーサと、各スペーサを連結する可撓性のベルトと、から構成される。各ボールは、スペーサとベルトとによって囲まれて転動自在に連結される。リテーナによって連結された各ボールは、上記無限循環路内を、移動ブロックの移動に伴って循環する。   For example, a ball is used as the rolling element. The balls are connected and aligned by a retainer as a rolling element connecting member. The retainer includes, for example, a plurality of spacers respectively disposed between adjacent balls, and a flexible belt that connects the spacers. Each ball is surrounded by a spacer and a belt so as to be freely rotatable. The balls connected by the retainer circulate in the endless circulation path as the moving block moves.

リテーナのベルトの側縁部は、ボールの移動方向に直交する断面においてボールの断面輪郭部よりも外側に突出しており、無限循環路には、ベルトの側縁部を案内する連結体案内部としてのガイド溝が循環路全域にわたって設けられている。   The side edge of the belt of the retainer protrudes outside the cross-sectional contour of the ball in a cross section perpendicular to the moving direction of the ball, and the infinite circulation path serves as a connecting body guide for guiding the side edge of the belt. The guide groove is provided over the entire circulation path.

ボール及びリテーナと無限循環路との隙間には、潤滑剤としてグリースが充填される。無限循環路のうち転動体戻り通路と方向転換路の断面輪郭部は、ボール及びリテーナの断面輪郭部よりも若干大きめの略同一形状となっている。したがって、リテーナのスペーサによって離間されることで各ボール間に形成される各隙間が、グリースポケットとなる。このように充填されたグリースは、ボール及びリテーナの循環に伴って無限循環路内を流動し、ボールとリテーナの循環を円滑なさしめる。   Grease is filled as a lubricant in the gap between the balls and the retainer and the endless circuit. Of the endless circulation path, the cross-sectional contours of the rolling element return passage and the direction change path have substantially the same shape that is slightly larger than the cross-sectional contours of the ball and the retainer. Accordingly, each gap formed between the balls by being separated by the spacer of the retainer becomes a grease pocket. The grease filled in this way flows in the endless circuit along with the circulation of the balls and the retainer, and smoothes the circulation of the balls and the retainer.

特開2003−202019号公報JP 2003-202019 A

本発明は上記の従来技術を改良するためになされたもので、その目的とするところは、転動体戻り通路内の潤滑剤の流動性を更に高くして摺動抵抗の一層の低減化を図ることができる転がり案内装置を提供することにある。   The present invention has been made to improve the above-described prior art, and an object of the present invention is to further improve the fluidity of the lubricant in the rolling element return passage to further reduce the sliding resistance. An object of the present invention is to provide a rolling guide device that can perform this.

上記目的を達成するために、本発明における転がり案内装置は、
転動体転走面が設けられた軌道部材と、該軌道部材に沿って多数の転動体を介して移動自在に設けられた移動部材と、を備え、
該移動部材には、前記軌道部材の前記転動体転走面に対応する負荷転動体転走面と、該負荷転動体転走面と所定間隔を隔てて並行に設けられる転動体戻り通路と、前記負荷転動体転走面と前記転動体戻り通路間を接続して転動体を循環させる一対の方向転換路と、が設けられ、
前記移動部材は、前記負荷転動体転走面と前記転動体戻り通路が形成された移動部材本体と、前記方向転換路が形成され、前記移動部材本体の移動方向両端に取り付けられる方向転換路構成部材と、を備えた構成とし、
前記多数の転動体は、転動体連結部材によって連結される構成で、該転動体連結部材は、転動体の移動方向に対して直交方向の転動体の断面輪郭部よりも外側に突出する一対の
突出部を有しており、転動体戻り通路内周には、転動体連結部材の前記突出部を案内する一対の連結部材案内部が設けられている転がり案内装置において、
前記転動体戻り通路は、前記移動部材本体の貫通孔に挿入される円筒状部材の内周面によって形成されており、
前記円筒状部材の内周に、転動体の前記断面輪郭部に対して、該断面輪郭部の周方向に所定間隔を隔てて部分的に複数箇所で接触し得る複数の転動体支持部を設け、該複数の転動体支持部の間で、転動体の前記断面輪郭部との間に前記転動体戻り通路の全長にわたって潤滑剤を流通可能とする潤滑剤流通隙間を形成し、
さらに、前記連結部材案内部の少なくとも一方については、方向転換の際に転動体の循環路における内周側となる側の側面と外周側となる側の側面のうちの、いずれか一方の側面のみを前記転動体連結部材の前記突出部を案内する案内面とし、他方の側面については潤滑剤流通隙間に面する構成となっていることを特徴とする転がり案内装置。
In order to achieve the above object, the rolling guide device according to the present invention includes:
A track member provided with a rolling element rolling surface, and a moving member provided movably through a number of rolling elements along the track member,
In the moving member, a loaded rolling element rolling surface corresponding to the rolling element rolling surface of the raceway member, and a rolling element return passage provided in parallel with the loaded rolling element rolling surface at a predetermined interval, A pair of direction change paths for circulating the rolling elements by connecting between the rolling elements rolling surfaces and the rolling element return passages are provided,
The moving member has a moving member main body in which the rolling rolling element rolling surface and the rolling element return passage are formed, a direction changing path structure in which the direction changing path is formed and attached to both ends of the moving member main body in the moving direction. And a configuration comprising a member,
The plurality of rolling elements are configured to be connected by a rolling element connecting member, and the rolling element connecting member protrudes outward from a cross-sectional contour portion of the rolling element in a direction orthogonal to the moving direction of the rolling element. In the rolling guide device having a protruding portion, and provided with a pair of connecting member guide portions for guiding the protruding portion of the rolling element connecting member on the inner periphery of the rolling element return passage,
The rolling element return passage is formed by an inner peripheral surface of a cylindrical member inserted into a through hole of the moving member body,
Provided on the inner periphery of the cylindrical member are a plurality of rolling element support portions that can partially contact at a plurality of locations with a predetermined interval in the circumferential direction of the cross sectional contour portion with respect to the cross sectional contour portion of the rolling element. In addition, a lubricant circulation gap is formed between the plurality of rolling element support portions so as to allow the lubricant to flow over the entire length of the rolling element return passage between the cross-sectional contour portion of the rolling elements,
Furthermore, for at least one of the connecting member guide portions, only one of the side surface on the inner circumferential side and the side surface on the outer circumferential side in the circulation path of the rolling element when changing the direction is used. Is a guide surface that guides the protruding portion of the rolling element coupling member, and the other side surface of the rolling guide device faces the lubricant flow gap.

本発明によれば、転動体戻り通路内の潤滑剤の流動性を更に高くして摺動抵抗の一層の低減化を図ることができる。   According to the present invention, the fluidity of the lubricant in the rolling element return passage can be further increased to further reduce the sliding resistance.

本発明の実施例に係る転がり案内装置が有する軌道レール及び移動ブロックの、断面を含む正面図。The front view including the cross section of the track rail and moving block which the rolling guide apparatus which concerns on the Example of this invention has. 図1に示す移動ブロックの斜視図。The perspective view of the movement block shown in FIG. 図1に示す移動ブロックの概略分解斜視図。FIG. 2 is a schematic exploded perspective view of the moving block shown in FIG. 1. 図1乃至図3に示す移動ブロックが備える樹脂循環路成形体を構成する樹脂フレームの構成を示す図。The figure which shows the structure of the resin frame which comprises the resin circulation path molded object with which the movement block shown to FIG. 1 thru | or FIG. 3 is provided. 図1乃至図3に示す移動ブロックが備える樹脂循環路成形体を構成する樹脂パイプを示す図。The figure which shows the resin pipe which comprises the resin circulation path molded object with which the movement block shown to FIG. 1 thru | or FIG. 3 is provided. 移動ブロックの移動方向に沿い、主として循環路を示す断面図。Sectional drawing which mainly shows a circulation path along the moving direction of a moving block. ボール連結帯の構成を示す図。The figure which shows the structure of a ball | bowl connection belt | band | zone. 方向転換路の構成を示す図。The figure which shows the structure of a direction change path. 主として方向転換路の構成を示す断面図。Sectional drawing which mainly shows the structure of a direction change path. ボール戻り通路及び方向転換路の断面図。Sectional drawing of a ball return path and a direction change path. 本発明の実施例の変形例を示す断面図。Sectional drawing which shows the modification of the Example of this invention.

以下に図面を参照して、この発明を実施するための形態を、実施例に基づいて例示的に詳しく説明する。ただし、この実施例に記載されている構成部品の寸法、材質、形状、その相対配置などは、特に特定的な記載がない限りは、この発明の範囲をそれらのみに限定する趣旨のものではない。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be exemplarily described in detail with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. .

(実施例)
図1〜図11を参照して、本発明の実施例に係る転がり案内装置について説明する。図1は、本実施例に係る転がり案内装置が有する軌道レール及び移動ブロックの、断面を含
む正面図である。図2は、図1に示す移動ブロックの斜視図である。図3は、図1に示す移動ブロックの概略分解斜視図である。図4は、図1乃至図3に示す移動ブロックが備える樹脂循環路成形体を構成する樹脂フレームの構成を示す図であり、図4(a)は上記の樹脂循環路成形体を構成する樹脂フレームの正面図、図4(b)は図4(a)の左側面図、図4(c)は図4(a)の右側面図である。図5は、上記の樹脂循環路成形体を構成する樹脂パイプを示すもので、図5(a)は外周側パイプ半体の正面図、図5(b)は図5(a)の側面図、図5(c)は内周側パイプ半体の正面図、図5(d)は図5(c)の側面図である。図6は、移動ブロックの移動方向に沿い、主として循環路を示す断面図である。図7は、ボール連結帯の構成を示す図であり、図7(a)はボール連結帯の部分側面図、図7(b)は図7(a)に関する平面図、図7(c)は図7(b)のa方向矢示図である。図8は、方向転換路の構成を示す図であり、図8(a)は図6において側蓋を外した状態の部分側面図、図8(b)は図6の側蓋の方向転換路の凹部を示す部分側面図である。図9は、主として方向転換路の構成を示す断面図である。図10は、ボール戻り通路及び方向転換路の断面図であり、図10(a)は図9のAA断面でありボール戻り通路の断面図、図10(b)は図9のBB断面であり方向転換路の断面図、図10(c)は図9のCC断面であり方向転換路の断面図である。図11は、本実施例の変形例を示す断面図であり、図11(a)は変形例1、図11(b)は変形例2をそれぞれ示す。
(Example)
With reference to FIGS. 1-11, the rolling guide apparatus which concerns on the Example of this invention is demonstrated. FIG. 1 is a front view including a cross section of a track rail and a moving block included in the rolling guide device according to the present embodiment. FIG. 2 is a perspective view of the moving block shown in FIG. FIG. 3 is a schematic exploded perspective view of the moving block shown in FIG. FIG. 4 is a view showing a structure of a resin frame constituting the resin circulation path molded body provided in the moving block shown in FIGS. 1 to 3, and FIG. 4 (a) is a resin constituting the resin circulation path molded body. FIG. 4B is a left side view of FIG. 4A, and FIG. 4C is a right side view of FIG. 4A. FIG. 5 shows a resin pipe constituting the above-mentioned resin circulation path molded body. FIG. 5 (a) is a front view of an outer peripheral side pipe half body, and FIG. 5 (b) is a side view of FIG. 5 (a). FIG. 5 (c) is a front view of the inner pipe half, and FIG. 5 (d) is a side view of FIG. 5 (c). FIG. 6 is a cross-sectional view mainly showing a circulation path along the moving direction of the moving block. FIG. 7 is a diagram showing the configuration of the ball coupling band, FIG. 7 (a) is a partial side view of the ball coupling band, FIG. 7 (b) is a plan view relating to FIG. 7 (a), and FIG. It is an a direction arrow directional view of Drawing 7 (b). 8 is a diagram showing the configuration of the direction change path, FIG. 8 (a) is a partial side view of FIG. 6 with the side cover removed, and FIG. 8 (b) is the direction change path of the side cover in FIG. It is a partial side view which shows the recessed part. FIG. 9 is a cross-sectional view mainly showing the configuration of the direction change path. 10 is a cross-sectional view of the ball return path and the direction change path. FIG. 10A is a cross-sectional view of AA in FIG. 9 and FIG. 10B is a cross-sectional view of BB in FIG. FIG. 10C is a cross-sectional view of the direction change path, and FIG. 10C is a cross-sectional view of the direction change path. FIG. 11 is a cross-sectional view showing a modification of the present embodiment. FIG. 11A shows a modification 1 and FIG. 11B shows a modification 2.

この転がり案内装置1は、図1に示すように、直線状に延びる軌道部材としての軌道レール2と、この軌道レール2に沿って多数の転動体としてのボール3を介して相対移動自在に設けられた移動部材としての移動ブロック4と、を備えている。   As shown in FIG. 1, the rolling guide device 1 is provided so as to be relatively movable via a track rail 2 as a track member extending linearly and balls 3 as a number of rolling elements along the track rail 2. And a moving block 4 as a moving member.

軌道レール2は略断面四角形状の長尺体で、軌道レール2の左右側面と両肩部にはそれぞれ2条のボール転走溝(転動体転走面)5が長手方向に沿って設けられている。軌道レール2の左右側面には、突堤2aが設けられており、この左右突堤2aの上下両側面に上記ボール転走溝5が設けられている。   The track rail 2 is a long body having a substantially rectangular cross section, and two ball rolling grooves (rolling member rolling surfaces) 5 are provided along the longitudinal direction on the left and right side surfaces and both shoulders of the track rail 2, respectively. ing. A jetty 2a is provided on the left and right side surfaces of the track rail 2, and the ball rolling grooves 5 are provided on both upper and lower sides of the left and right jetty 2a.

移動ブロック4は、軌道レール2の上面に対向する水平部6と、水平部6の左右両側からそれぞれ下方に延びて軌道レール2の左右側面に対向する一対の袖部7と、を備えた下方に開いた断面コ字形状のブロック体によって構成されている。そして、両袖部7の内側面には、それぞれ軌道レール2に設けられた各ボール転走溝5に対応する4条の負荷ボール転走溝(負荷転動体転走面)8が設けられている。これら互いに対応するボール転走溝5及び負荷ボール転走溝8により計4条の負荷転動体転走路が形成される。   The moving block 4 includes a horizontal portion 6 that faces the upper surface of the track rail 2, and a pair of sleeve portions 7 that extend downward from the left and right sides of the horizontal portion 6 and face the left and right side surfaces of the track rail 2. It is comprised by the block body of the cross-sectional U-shape opened in the. Then, four load ball rolling grooves (loaded rolling element rolling surfaces) 8 corresponding to the respective ball rolling grooves 5 provided on the track rail 2 are provided on the inner side surfaces of both sleeve portions 7. Yes. A total of four loaded rolling element rolling paths are formed by the ball rolling grooves 5 and the load ball rolling grooves 8 corresponding to each other.

また、移動ブロック4の左右両袖部7には、負荷ボール転走溝8と所定間隔を隔てて並行に延びるように設けられた2条ずつの転動体戻り通路としてのボール戻り通路9が貫通形成され、さらに、左右両袖部7の長さ方向両端部には、図6に示すように、各負荷ボール転走溝8とボール戻り通路9の両端間を接続してボール3を循環させるU字パイプ状の方向転換路10が一対設けられている。つまり、移動ブロック4の両袖部7には、ボール3が循環する左右2条ずつ計4条の無限循環路が構成されている。   The left and right sleeve portions 7 of the moving block 4 are penetrated by ball return passages 9 as rolling element return passages that are provided in parallel with the load ball rolling groove 8 with a predetermined distance therebetween. Further, as shown in FIG. 6, both ends of the load ball rolling groove 8 and the ball return passage 9 are connected to both ends of the left and right sleeve portions 7 in the length direction to circulate the balls 3. A pair of U-shaped pipe-shaped direction change paths 10 are provided. That is, the sleeves 7 of the moving block 4 are formed with a total of four infinite circulation paths, two on the left and right on which the ball 3 circulates.

この実施例では、4列のボール3は、それぞれ転動体連結部材としてのボール連結帯12を介して一連につなげられ転動自在に整列されており、ボール連結帯12と共に循環移動するようになっている。   In this embodiment, the four rows of balls 3 are connected in series through a ball connection band 12 as a rolling element connection member, and are arranged so as to be able to roll and circulate together with the ball connection band 12. ing.

ボール連結帯12は、図7(a)〜(c)に示すように、各ボール3が挿入されるボール穴12aが設けられた連結部としての可撓性のベルト部12bと、各ボール3とボール3の間に介装される間座としてのスペーサ部12cとを備え、ベルト部12bの側縁がボール3の外径よりも外方に張り出している。すなわち、ベルト部12bの側縁部は、ボール3の移動方向に対して直交方向のボール3の断面輪郭部よりも外側に突出する一対の突出部
となっている。
As shown in FIGS. 7A to 7C, the ball connecting band 12 includes a flexible belt portion 12b as a connecting portion provided with a ball hole 12a into which each ball 3 is inserted, and each ball 3 And a spacer portion 12 c as a spacer interposed between the balls 3, and the side edges of the belt portion 12 b project outward from the outer diameter of the balls 3. That is, the side edge portions of the belt portion 12 b are a pair of protruding portions that protrude outward from the cross-sectional contour portion of the ball 3 in the direction orthogonal to the moving direction of the ball 3.

スペーサ部12cには各ボール3の球面に対応する球冠状の保持凹部12dが設けられ、この保持凹部12dによってボール3を両側から支持してベルト部12bからのボール3の脱落を防止している。この実施例ではベルト部12bの両端は連結されていない有端帯状の構成であるが(図6参照)、ベルト部12bの両端を連結した無端状の構成としてもよい。また、ボール連結帯12は、本実施例のようにボール3を脱落しないように保持する形態に限らず、各ボール3を単に連結するのみとして脱落し得るようにしてもよい。   The spacer portion 12c is provided with a crown-shaped holding recess 12d corresponding to the spherical surface of each ball 3, and the ball 3 is supported from both sides by the holding recess 12d to prevent the ball 3 from falling off the belt portion 12b. . In this embodiment, the both ends of the belt portion 12b have an endless belt-like configuration in which both ends are not connected (see FIG. 6), but an endless configuration in which both ends of the belt portion 12b are connected may be used. Further, the ball connection band 12 is not limited to a form in which the balls 3 are held so as not to drop out as in the present embodiment, but may be configured to be dropped simply by connecting the balls 3.

移動ブロック4は、図2及び図3に示すように、負荷ボール転走溝8とボール戻り通路9が形成された移動部材本体としてのブロック本体13と、ブロック本体13に組み込まれる左右一対の樹脂循環路成形体20と、この左右一対の樹脂循環路成形体20が組み込まれたブロック本体13の移動方向両端に取り付けられる方向転換路構成部材としての一対の側蓋40(一方の側蓋は省略)と、を備えた構成となっている。   As shown in FIGS. 2 and 3, the moving block 4 includes a block main body 13 as a moving member main body in which the loaded ball rolling groove 8 and the ball return passage 9 are formed, and a pair of left and right resins incorporated in the block main body 13. A pair of side lids 40 (one side lid is omitted) as a direction change path constituting member attached to both ends in the moving direction of the circulation path molded body 20 and the block main body 13 incorporating the pair of left and right resin circulation path molded bodies 20. ).

左右の樹脂循環路成形体20はそれぞれ2条の無限循環路を構成するもので、左右対称形状なので、以下の説明では片側の樹脂循環路成形体20についてだけ説明し他方の樹脂循環路成形体20の説明は省略する。   Each of the left and right resin circulation path molded bodies 20 constitutes two infinite circulation paths, and has a symmetrical shape. Therefore, in the following description, only the resin circulation path molded body 20 on one side will be described, and the other resin circulation path molded body will be described. The description of 20 is omitted.

すなわち、樹脂循環路成形体20は、負荷ボール転走溝8の両側縁に沿って延びる負荷ボール通路構成部21と、ブロック本体13の両端面に設けられる一対の方向転換路内周案内構成部22とを一体とした樹脂フレーム24と(図4参照)、ブロック本体13に貫通形成された貫通孔14に挿入される転動体戻り通路構成部材としての一対の樹脂パイプ23とを備えている(図5参照)。つまり、負荷ボール通路構成部21と一対の方向転換路内周案内構成部22との接続部が一体成形されて一体の樹脂フレーム24を構成し、一対の樹脂パイプ23を別体としてブロック本体13に対して組み込み可能としている。   That is, the resin circulation path molded body 20 includes a load ball path constituting portion 21 extending along both side edges of the load ball rolling groove 8 and a pair of direction change path inner periphery guiding constituting portions provided on both end faces of the block body 13. 22 and a resin frame 24 (see FIG. 4), and a pair of resin pipes 23 as rolling member return passage constituting members inserted into through holes 14 formed through the block main body 13 (see FIG. 4). (See FIG. 5). That is, the connecting portion between the load ball passage constituting portion 21 and the pair of direction change path inner periphery guiding constituting portions 22 is integrally formed to constitute an integral resin frame 24, and the block main body 13 is separated from the pair of resin pipes 23. Can be built in

負荷ボール通路構成部21には、図4に示すように、負荷域においてボール連結帯12のベルト部12bの側縁部すなわち突出部を案内する連結部材案内部としての案内溝21aが直線状に設けられ、ボール3が転動移行する際のボール連結帯12の振れを防止すると共に、移動ブロック4を軌道レール2から外した際には、ベルト部12bの側縁部の、案内部を構成する案内溝21aに引掛けてボール連結帯12の垂れ下がりを防止するようになっている。   As shown in FIG. 4, the load ball passage constituting portion 21 has a guide groove 21 a as a connecting member guide portion that guides the side edge portion of the belt portion 12 b of the ball connecting band 12, that is, the protruding portion in the load region. Provided to prevent the ball connecting band 12 from swinging when the ball 3 rolls, and when the moving block 4 is removed from the track rail 2, it constitutes a guide portion at the side edge of the belt portion 12b. The ball coupling band 12 is prevented from hanging down by being hooked on the guide groove 21a.

また、各負荷ボール転走溝8両側縁に位置する一対の負荷ボール通路構成部21の開口幅はボール径より小さくなっており、ボール連結帯12を用いない場合でも、この負荷ボール通路構成部21によってボール3の脱落が防止される。   Further, the opening width of the pair of load ball passage constituting portions 21 located on both side edges of each load ball rolling groove 8 is smaller than the ball diameter, and even when the ball connecting band 12 is not used, the load ball passage constituting portion 21 is provided. 21 prevents the ball 3 from falling off.

一方、無負荷域の方向転換路10およびボール戻り通路9の内周においては、図5、図6、図8、図9に示すように、ボール3及びベルト部12bを案内する転動体支持部としての3条の凸部15a〜15c、16a〜16cが転走路に沿って延びるように設けられている。   On the other hand, in the inner periphery of the direction change path 10 and the ball return path 9 in the no-load region, as shown in FIGS. 5, 6, 8, and 9, a rolling element support portion that guides the ball 3 and the belt portion 12b. Are provided so as to extend along the rolling path.

負荷ボール通路構成部21は、図4(b)に示すように、ブロック本体13の水平部6と袖部7の隅角部に沿ってブロック本体13の長手方向に延びる第1連結板部25と、ブロック本体13の各袖部7内周の各負荷ボール転走溝8間に長手方向に延びる第2連結板部26と、ブロック本体13の袖部7下端面に沿ってブロック本体13の長手方向に延びる一対の第3連結板部27と、によって構成されている。   As shown in FIG. 4B, the load ball passage constituting portion 21 includes a first connecting plate portion 25 extending in the longitudinal direction of the block body 13 along the horizontal portion 6 of the block body 13 and the corners of the sleeve portion 7. The second connecting plate portion 26 extending in the longitudinal direction between the respective load ball rolling grooves 8 on the inner periphery of each sleeve portion 7 of the block body 13, and the block body 13 along the lower end surface of the sleeve portion 7 of the block body 13. And a pair of third connecting plate portions 27 extending in the longitudinal direction.

すなわち、互いに対向する第1連結板部25の下縁と第2連結板部26の上縁が各袖部
7に設けた上側の負荷ボール転走溝8の溝側縁に位置して負荷ボール通路構成部21を構成している。また、互いに対向する第2連結板部26の下縁と第3連結板部27の内側上縁が、袖部7内側面に設けた下側の負荷ボール転走溝8の溝側縁に位置して負荷ボール通路構成部21を構成している。
That is, the load ball is positioned such that the lower edge of the first connecting plate portion 25 and the upper edge of the second connecting plate portion 26 facing each other are located on the groove side edge of the upper load ball rolling groove 8 provided in each sleeve portion 7. A passage configuration portion 21 is configured. Further, the lower edge of the second connecting plate portion 26 and the inner upper edge of the third connecting plate portion 27 facing each other are positioned on the groove side edge of the lower load ball rolling groove 8 provided on the inner surface of the sleeve portion 7. Thus, the load ball passage constituting portion 21 is constituted.

一方、図4及び図6に示すように、方向転換路内周案内構成部22と負荷ボール通路構成部21が薄肉板部29を介して一体成形され、樹脂パイプ23は薄肉板29に設けられた嵌合穴34にインロウ嵌合されて位置決め固定されている。   On the other hand, as shown in FIGS. 4 and 6, the direction change path inner periphery guiding component 22 and the load ball passage component 21 are integrally formed through the thin plate 29, and the resin pipe 23 is provided on the thin plate 29. The fitting hole 34 is in-row fitted and positioned and fixed.

薄肉板部29には軌道レール2側面の各2列のボール3に対応する方向転換路内周案内構成部22が突出形成されている。   The thin-walled plate portion 29 is formed with projecting direction change path inner periphery guiding components 22 corresponding to the two rows of balls 3 on the side surface of the track rail 2.

そして、ブロック本体13両端の薄肉板部29に上記第1,第2および第3連結板部25〜27の両端が結合されて、一つの樹脂フレーム24が構成されている。   And the both ends of the said 1st, 2nd and 3rd connection board parts 25-27 are couple | bonded with the thin board part 29 of the block main body 13 both ends, and the one resin frame 24 is comprised.

各方向転換路内周案内構成部22は半割円筒形状で、その外周に方向転換路10の内周案内部を構成する断面円弧状の内周案内溝10aが形成されている。この内周案内溝10aの一端は負荷ボール転走溝8の端部に接続されるもので、負荷ボール転走溝8と略同一の断面形状に成形され、負荷ボール転走溝8の端部位置に一致するように位置決めされる。また、方向転換路10の内周案内溝10aの他端はボール戻り通路9の端部に接続されるもので、ボール戻り通路9と略同一の断面形状に成形され、ボール戻り通路9の端部位置に一致するように位置決めされる。   Each direction change path inner periphery guide component 22 has a half-cylindrical cylindrical shape, and an inner periphery guide groove 10a having a circular arc shape that forms the inner periphery guide part of the direction change path 10 is formed on the outer periphery thereof. One end of the inner peripheral guide groove 10 a is connected to the end of the load ball rolling groove 8, and is formed to have substantially the same cross-sectional shape as the load ball rolling groove 8. Positioned to match the position. The other end of the inner circumferential guide groove 10a of the direction changing path 10 is connected to the end of the ball return passage 9 and is formed in the same cross-sectional shape as the ball return passage 9, and the end of the ball return passage 9 is Positioned to match the part position.

また、図8(a)、図9、図10(b)、(c)に示すように、内周案内溝10aの溝両側縁には、負荷ボール転走溝8側からボール戻り通路9側に向かうにしたがって徐々に高さが増すように構成された凸部15b、15cがそれぞれ設けられている。具体的には、負荷ボール転走溝8側からボール戻り通路9側に向かうボール3の移動方向に見た内周案内溝10aの表面輪郭が、凸部15b、15cの先端面だけを残してボール3の通過領域から徐々に離れていくように構成されている。すなわち、内周案内溝10aの表面のうち凸部15b、15cの先端面だけが、方向転換路10全域でボール3と接触可能な状態を維持する構成となっている。各凸部15b、15cの一方の側面にはベルト部12bの幅よりも大きい幅の円筒状縁部33が設けられている。この円筒状縁部33は、ボール3の移動方向に沿ってベルト部12bの側縁部を案内する案内面を構成する。   Further, as shown in FIGS. 8A, 9, 10B, and 10C, on both side edges of the inner peripheral guide groove 10a, the load ball rolling groove 8 side to the ball return passage 9 side are provided. Convex portions 15b and 15c configured to gradually increase in height as they go to are provided. Specifically, the surface contour of the inner peripheral guide groove 10a viewed in the moving direction of the ball 3 from the loaded ball rolling groove 8 side toward the ball return passage 9 side leaves only the tip surfaces of the convex portions 15b and 15c. It is comprised so that it may leave | separate gradually from the passage area | region of the ball | bowl 3. As shown in FIG. That is, only the tip surfaces of the convex portions 15 b and 15 c among the surface of the inner circumferential guide groove 10 a are configured to maintain a state in which the ball 3 can be contacted in the entire direction change path 10. A cylindrical edge portion 33 having a width larger than the width of the belt portion 12b is provided on one side surface of each of the convex portions 15b and 15c. The cylindrical edge portion 33 constitutes a guide surface that guides the side edge portion of the belt portion 12 b along the moving direction of the ball 3.

方向転換路10の内周案内溝10aの両端は、負荷ボール転走溝8およびボール戻り通路9の両端に接続するために、薄肉板部29のブロック本体13端面との当接面側まで延びている。一方、薄肉板部29には樹脂パイプ23の端部が嵌合される半円状のパイプ嵌合穴34が設けられている。   Both ends of the inner circumferential guide groove 10 a of the direction change path 10 extend to the contact surface side with the end surface of the block main body 13 of the thin plate portion 29 in order to connect to both ends of the load ball rolling groove 8 and the ball return passage 9. ing. On the other hand, the thin plate portion 29 is provided with a semicircular pipe fitting hole 34 into which the end portion of the resin pipe 23 is fitted.

転動体戻り通路構成部材である樹脂パイプ23は、図5に示すように、側蓋40の方向転換路10の外周案内溝10bと連続する循環路外周側に位置する外周側パイプ半体23bと、内周案内溝10aと連続する循環路内周側に位置する内周側パイプ半体23aと、から構成されている。   As shown in FIG. 5, the resin pipe 23, which is a rolling element return passage constituent member, includes an outer peripheral pipe half body 23 b located on the outer peripheral side of the circulation path that is continuous with the outer peripheral guide groove 10 b of the direction changing path 10 of the side lid 40. The inner circumferential side guide groove 10a is connected to the inner circumferential side pipe half body 23a located on the inner circumferential side of the circulation path.

内周側パイプ半体23aは、図5(c),(d)に示すように、断面円弧状の溝部9aと、この溝部(凹状円弧面)9aの溝両側縁に沿ってそれぞれ長手方向に延びる凸部16b、16cと、を備えている。また、外周側パイプ半体23bは、図5(a),(b)に示すように、側蓋40の外周案内溝10bと略同一の断面円弧形状の直線状部材で、外周案内溝10bと連続する溝部9bと、この溝部(凹状円弧面)9bの略中央(溝底部)に沿って長手方向に延びる凸部16aと、を備えている。これら内周側パイプ半体23aと
外周側パイプ半体23bは、側端面同士が当接されて組み合わされることで円筒状(パイプ状)部材に構成される。この円筒状部材の内周面がボール戻り通路9となる。内周側パイプ半体23aの側端面23c、23d(凸部16b、16cの一方の側面)は、外周側パイプ半体23bの側端面23eに当接する領域の内側の面がボール連結帯12のベルト部12bの側縁部をボール3の移動方向に沿って案内する案内面を構成する。
As shown in FIGS. 5C and 5D, the inner pipe half 23a is formed in a longitudinal direction along the groove 9a having a circular arc section and both side edges of the groove (concave arc surface) 9a. And extending protrusions 16b and 16c. As shown in FIGS. 5 (a) and 5 (b), the outer peripheral pipe half 23b is a linear member having a substantially the same cross-sectional arc shape as the outer peripheral guide groove 10b of the side cover 40. A continuous groove portion 9b and a convex portion 16a extending in the longitudinal direction along substantially the center (groove bottom portion) of the groove portion (concave arc surface) 9b are provided. The inner circumferential pipe half 23a and the outer circumferential pipe half 23b are configured as a cylindrical (pipe-shaped) member by combining the side end surfaces in contact with each other. The inner peripheral surface of this cylindrical member becomes the ball return passage 9. The side end surfaces 23c and 23d (one side surface of the convex portions 16b and 16c) of the inner peripheral pipe half 23a are located on the inner surface of the region contacting the side end surface 23e of the outer peripheral pipe half 23b. A guide surface for guiding the side edge portion of the belt portion 12b along the moving direction of the ball 3 is formed.

樹脂パイプ23の内周側パイプ半体23aの長さはブロック本体13の長さと等しく、方向転換路内周案内構成部22の背面に当接して長手方向の位置決めがなされる。   The length of the inner pipe half 23a of the resin pipe 23 is equal to the length of the block main body 13, and the resin pipe 23 is positioned in the longitudinal direction by coming into contact with the back surface of the direction changing path inner guide part 22.

一方、樹脂パイプ23の外周側パイプ半体23bの長さはブロック本体13の長さより薄肉板部29の肉厚分だけ長く嵌合穴34に嵌合されている。嵌合穴34に嵌合された外周側パイプ半体23bの両端面は側蓋40の外周案内溝10bの端部周縁に突き当たって長手方向の位置決めがなされる。また、外周側パイプ半体23bの側端面23eの長手方向両端部(内周側パイプ半体23aの側端面23cと当接しない領域)が方向転換路内周案内構成部22に形成された円筒状縁部33の外側縁に当接することにより、貫通孔14内に挿入された外周側パイプ半体23bおよび内周側パイプ半体23aの回り止めがなされる。   On the other hand, the length of the outer circumferential pipe half 23 b of the resin pipe 23 is fitted in the fitting hole 34 longer than the length of the block main body 13 by the thickness of the thin plate portion 29. Both end surfaces of the outer pipe half 23b fitted in the fitting hole 34 abut against the peripheral edge of the outer guide groove 10b of the side lid 40 and are positioned in the longitudinal direction. In addition, a cylinder in which both end portions in the longitudinal direction of the side end surface 23e of the outer peripheral pipe half body 23b (a region not in contact with the side end surface 23c of the inner peripheral side pipe half body 23a) are formed in the direction change path inner peripheral guide component 22. By contacting the outer edge of the edge portion 33, the outer peripheral pipe half 23b and the inner peripheral pipe half 23a inserted into the through hole 14 are prevented from rotating.

このように、樹脂パイプ23と方向転換路内周案内構成部22は、薄肉板部29に形成された嵌合穴34を介して正確に位置決めされて組付けられる。   As described above, the resin pipe 23 and the direction change path inner periphery guiding component 22 are accurately positioned and assembled through the fitting hole 34 formed in the thin plate portion 29.

一方、側蓋40には、図8に示されるように、薄肉板部29が嵌合される段凹部40aと、方向転換路内周案内構成部22が嵌合される方向転換路外周案内構成部としての外周案内溝10bを備えた凹部41と、側蓋40をブロック本体13に対して締め付け固定する締め付け固定部とを備えている。締め付け固定部は側蓋40に形成されたボルト挿通孔43に不図示のボルトを挿入し、ブロック本体13の端面に形成されたボルト穴45にねじ込むことによって締め付け固定している。ボルト挿通孔43の位置は、各樹脂循環路成形体20の方向転換路内周案内構成部22の間の薄肉板部29と、水平部6の左右薄肉板部29近傍位置との4箇所に設けられている。   On the other hand, as shown in FIG. 8, the side cover 40 has a step recess 40 a in which the thin plate portion 29 is fitted, and a direction change path outer periphery guide configuration in which the direction change path inner periphery guide configuration portion 22 is fitted. A concave portion 41 having an outer peripheral guide groove 10b as a portion and a tightening fixing portion for tightening and fixing the side lid 40 to the block main body 13 are provided. The fastening portion is fastened and fixed by inserting a bolt (not shown) into a bolt insertion hole 43 formed in the side lid 40 and screwing it into a bolt hole 45 formed in the end face of the block body 13. The positions of the bolt insertion holes 43 are at four locations, that is, the thin plate portion 29 between the direction change path inner periphery guide constituting portions 22 of each resin circulation path molded body 20 and the positions near the left and right thin plate portions 29 of the horizontal portion 6. Is provided.

凹部41の外周案内溝10bの側縁には、図8(b)に示されるように、図8(a)に示す方向転換路内周案内構成部22の円筒状縁部33との間で協働してボール連結帯12のベルト部12bの案内溝(連結部材案内部)を構成する半円状の大径段部46と、円筒状縁部33が嵌合される小径段部47とが設けられている。そして、内周案内溝10aが形成された方向転換路内周案内構成部22が側蓋40の凹部41に嵌合されると共に側蓋部40の段凹部40aに薄肉板部29が収容され、締め付け力によって薄肉板部29が側蓋40とブロック本体13の端面の間に挟まれて固定される。図9に示すように、大径段部46のボール戻り通路9に臨む縁部46aは、ボール連結帯12の引っかかりを防止すべく30度の面取り形状あるいはR形状としている。   As shown in FIG. 8B, the side edge of the outer peripheral guide groove 10b of the recess 41 is between the cylindrical edge portion 33 of the direction change path inner peripheral guide component 22 shown in FIG. 8A. A semicircular large-diameter step portion 46 that cooperates to form a guide groove (connection member guide portion) of the belt portion 12b of the ball connection band 12, and a small-diameter step portion 47 into which the cylindrical edge portion 33 is fitted. Is provided. And the direction change path inner periphery guidance structure part 22 in which the inner periphery guide groove 10a was formed is fitted by the recessed part 41 of the side cover 40, and the thin board part 29 is accommodated in the step recessed part 40a of the side cover part 40, The thin plate portion 29 is sandwiched and fixed between the side cover 40 and the end surface of the block body 13 by the tightening force. As shown in FIG. 9, the edge 46 a of the large diameter step 46 facing the ball return passage 9 has a chamfered shape of 30 degrees or an R shape to prevent the ball connecting band 12 from being caught.

薄肉板部29を介して方向転換路内周案内構成部22と負荷ボール通路構成部21を連結することによって、方向転換路内周案内構成部22に設けられた内周案内溝10aの一端と負荷ボール通路構成部21の相対位置関係、または内周案内溝10aとボール戻り通路9の位置関係が正確に位置決めされる。   By connecting the direction change path inner periphery guide component 22 and the load ball path component 21 via the thin plate portion 29, one end of the inner periphery guide groove 10a provided in the direction change path inner periphery guide component 22; The relative positional relationship of the load ball passage constituting portion 21 or the positional relationship between the inner circumferential guide groove 10a and the ball return passage 9 is accurately positioned.

一方、側蓋40の締め付け力によって方向転換路内周案内構成部22周辺の薄肉板部29が側蓋40によって均一に平坦なブロック本体13端面に押し付けられるので、方向転換路内周案内構成部22の姿勢(向き)が歪んでいる場合でもブロック本体13の端面に倣って薄肉板部29が撓んで方向転換路内周案内部22の歪みが矯正される。   On the other hand, the thin plate portion 29 around the direction change path inner periphery guiding component 22 is pressed against the end face of the block main body 13 uniformly by the side cover 40 by the tightening force of the side cover 40, so the direction changing path inner periphery guide component Even when the posture (orientation) of 22 is distorted, the thin plate portion 29 bends along the end surface of the block main body 13 and the distortion of the direction change path inner periphery guide portion 22 is corrected.

また、側蓋40の締め付け力によって薄肉板部29が強固に締め付け固定され、その摩擦力によって内周案内溝10aの位置ずれもない。   Further, the thin plate portion 29 is firmly tightened and fixed by the tightening force of the side lid 40, and the inner peripheral guide groove 10a is not displaced by the friction force.

側蓋40は、ブロック本体13に対して組み付けられた方向転換路内周案内構成部22に側蓋40の凹部41を嵌め込んで固定されるので、側蓋40は方向転換路内周案内構成部22との凹凸嵌合によってブロック本体13に対して正確に位置決めされて固定される。   Since the side cover 40 is fixed by fitting the concave portion 41 of the side cover 40 into the direction change path inner periphery guide constituting part 22 assembled to the block main body 13, the side cover 40 is fixed to the direction change path inner periphery guide constituting part. It is accurately positioned and fixed with respect to the block main body 13 by the concave-convex fitting with the portion 22.

このように、内周案内溝10aと外周案内溝10bと樹脂パイプ23とが互いに正確に位置決め固定されることにより、樹脂パイプ23の凸部16aと外周案内溝10bに設けられた凸部15a、樹脂パイプ23の凸部16b、16cと内周案内溝10aの凸部15b、15cが、無負荷域においてそれぞれボール3の移動方向に沿って連続的に延びる凸部を構成する。   Thus, the inner peripheral guide groove 10a, the outer peripheral guide groove 10b, and the resin pipe 23 are accurately positioned and fixed to each other, whereby the convex portion 16a of the resin pipe 23 and the convex portion 15a provided in the outer peripheral guide groove 10b, The convex portions 16b and 16c of the resin pipe 23 and the convex portions 15b and 15c of the inner peripheral guide groove 10a constitute convex portions that continuously extend along the moving direction of the ball 3 in the no-load region.

次に、上記樹脂循環路成形体20の組み付け手順を説明する。   Next, a procedure for assembling the resin circulation path molded body 20 will be described.

まず、樹脂パイプ23の内周側パイプ半体23aをブロック本体13の袖部7の貫通穴14に挿入する。   First, the inner peripheral pipe half 23 a of the resin pipe 23 is inserted into the through hole 14 of the sleeve portion 7 of the block body 13.

次いで、一体成形した樹脂フレーム24両端の薄肉板部29をブロック本体13の袖部7端面に沿ってすべらせながら内側面側から差し込む。樹脂フレーム24の第1連結板部25が水平部6と袖部7の隅角部に当接して上下方向の位置決めがなされ、樹脂フレーム24の第2連結板部26および第3連結板部27がブロック本体13の袖部7の内側面に当接して、各負荷ボール通路構成部21および方向転換路内周案内構成部22の位置決めがなされる。このとき薄肉板部29のパイプ嵌合穴34がブロック本体13の貫通孔14に合致する。   Next, the thin plate portions 29 at both ends of the integrally formed resin frame 24 are inserted from the inner surface side while sliding along the end surfaces of the sleeve portions 7 of the block body 13. The first connecting plate portion 25 of the resin frame 24 is brought into contact with the corner portions of the horizontal portion 6 and the sleeve portion 7 to be positioned in the vertical direction, and the second connecting plate portion 26 and the third connecting plate portion 27 of the resin frame 24 are positioned. Is brought into contact with the inner surface of the sleeve portion 7 of the block body 13 to position each load ball passage constituting portion 21 and the direction change path inner periphery guiding constituting portion 22. At this time, the pipe fitting hole 34 of the thin plate portion 29 matches the through hole 14 of the block body 13.

次いで、パイプ嵌合穴34を通じて外周側パイプ半体23bを貫通孔14に挿入して一方の樹脂循環路成形体20の組み込みが完了する。   Next, the outer pipe half 23b is inserted into the through hole 14 through the pipe fitting hole 34, and the assembly of the one resin circulation path molded body 20 is completed.

同様にして他方の樹脂循環路成形体20の組み込みを行う。   Similarly, the other resin circulation path molded body 20 is incorporated.

その後、一方の側蓋40をブロック本体13の一端面に締め付け固定し、ボール連結帯12を挿入した後、他方の側蓋40をブロック本体13の他端面に締め付け固定し、移動ブロック4の組立が完了する。   Thereafter, one side lid 40 is fastened and fixed to one end surface of the block main body 13 and the ball connecting band 12 is inserted, and then the other side lid 40 is fastened and fixed to the other end surface of the block main body 13 to assemble the movable block 4. Is completed.

<本実施例の特徴的構成>
本実施例に係る転がり案内装置1は、ボール戻り通路9の内周に複数の転動体支持部としての凸部16a〜16cを設けている。これら凸部16a〜16cは、ボール3の移動方向に対して直交方向のボール3の断面輪郭部に対して、該断面輪郭部の周方向に所定間隔を隔てて部分的に複数箇所で接触し得る。ボール3は、これら3条の凸部16a〜16cに対する接触状態、非接触状態を繰り返しつつボール戻り通路9内を支持・案内される。各凸部16a〜16cは、ボール戻り通路9の内周面からボール3の移動方向に沿って延びるように突出しており、それぞれの先端面がボール3の球面に合致するように、断面がR形状とされ、ボール3に滑らかに当接し得る。また、3条の凸部のうち少なくとも2つの凸部16b、16cの一方の側面(側端面23c、23d)は、ボール連結帯12のベルト部12bの側縁部に接触して案内する案内面となっている。
<Characteristic configuration of this embodiment>
The rolling guide device 1 according to the present embodiment is provided with convex portions 16 a to 16 c as a plurality of rolling element support portions on the inner periphery of the ball return passage 9. These convex portions 16a to 16c are partially in contact with the cross-sectional contour portion of the ball 3 perpendicular to the moving direction of the ball 3 at a plurality of locations with a predetermined interval in the circumferential direction of the cross-sectional contour portion. obtain. The ball 3 is supported and guided in the ball return passage 9 while repeating a contact state and a non-contact state with respect to the three protrusions 16a to 16c. Each convex part 16a-16c protrudes so that it may extend along the moving direction of the ball | bowl 3 from the internal peripheral surface of the ball | bowl return channel | path 9, and a cross section is R so that each front end surface may correspond to the spherical surface of the ball | bowl 3. The shape is formed, and the ball 3 can be smoothly contacted. Further, one side surface (side end surface 23c, 23d) of at least two convex portions 16b, 16c among the three convex portions is a guide surface that contacts and guides the side edge portion of the belt portion 12b of the ball coupling band 12. It has become.

上述したように、ボール戻り通路9において、凸部16は、ボール3をボール戻り通路9の内周面から離間させて支持できるような間隔・配置で3条設けられる。各凸部16a
、16b、16cの間で、ボール3の上記断面輪郭部との間に、ボール戻り通路9の全長にわたって潤滑剤を流通可能とする潤滑剤流通隙間17a、17b、17cが形成されている。各凸部16a〜16cの間隔は、ボール3をバランスよく支持できる間隔であるとともに、各凸部16a〜16c間にグリースの流動を妨げない広さの空間が確保できるような間隔に設定される。本実施例では、3条の凸部16a〜16cが、ボール戻り通路9の内周面の3カ所に周方向に等間隔で配置されている。すなわち、3条の凸部16a〜16cのそれぞれの間隔は、略120°である。
As described above, in the ball return passage 9, three protrusions 16 are provided at intervals / arrangements so that the ball 3 can be supported while being separated from the inner peripheral surface of the ball return passage 9. Each convex part 16a
, 16b, and 16c, lubricant circulation gaps 17a, 17b, and 17c that allow the lubricant to flow through the entire length of the ball return passage 9 are formed between the ball 3 and the cross-sectional contour portion. The intervals between the convex portions 16a to 16c are intervals that can support the ball 3 in a well-balanced manner, and can be set at intervals that can secure a space between the convex portions 16a to 16c that does not hinder the flow of grease. . In this embodiment, the three convex portions 16 a to 16 c are arranged at three locations on the inner peripheral surface of the ball return passage 9 at equal intervals in the circumferential direction. That is, the interval between the three convex portions 16a to 16c is approximately 120 °.

3条の凸部16a〜16cは、少なくとも1条の凸部が無限循環路の内周側に位置し、少なくとも1条の凸部が無限循環路の外周側に位置するように配置される。本実施例では、2条の凸部16b;16cがボール戻り通路9におけるボール3の転走中心よりも負荷転走路側に配置される。また、1条の凸部16aがボール戻り通路9におけるボール3の転走中心よりも無負荷転走路側とは反対側に配置される。すなわち、ボール3は、無限循環路の外周側において、凸部16aにより支えられ、無限循環路の内周側において、2つの凸部16b、16cにより支えられる。   The three convex portions 16a to 16c are arranged such that at least one convex portion is located on the inner peripheral side of the infinite circulation path and at least one convex portion is located on the outer peripheral side of the infinite circulation path. In the present embodiment, the two protruding portions 16b; 16c are arranged on the side of the load rolling path from the rolling center of the ball 3 in the ball return path 9. Further, a single convex portion 16 a is disposed on the opposite side of the rolling center of the ball 3 in the ball return passage 9 from the unloaded rolling path side. That is, the ball 3 is supported by the convex portion 16a on the outer peripheral side of the endless circuit, and is supported by the two convex portions 16b and 16c on the inner peripheral side of the endless circuit.

ベルト部12bの側縁部は、ベルト部12bよりも無限循環路の内周側に位置する凸部16b;16cの側面によって案内される。すなわち、凸部16b;16cの側面のうち無限循環路の外周側(ボール戻り通路9におけるボール3の転走中心よりも負荷転走路とは反対側)の側面が、ベルト部12bを案内する案内面として機能する。ベルト部12bの側縁部を案内する各案内面は、ベルト部12bがボール3の断面の円周方向にねじれることがないように、ベルト部12bの変位をボール3の断面の円周方向に互いに逆方向に規制する配置で設けられる。また、凸部16aが各案内面に対向する方向でボール3に接触してボール3の変位を規制することで、ベルト部12bが各案内面から浮き上がることが抑制される。   The side edge portion of the belt portion 12b is guided by the side surfaces of the convex portions 16b; 16c located on the inner peripheral side of the infinite circulation path with respect to the belt portion 12b. That is, of the side surfaces of the convex portions 16b; 16c, the side surface on the outer peripheral side of the infinite circulation path (the side opposite to the load rolling path from the rolling center of the ball 3 in the ball return path 9) guides the belt part 12b. Functions as a surface. Each guide surface that guides the side edge portion of the belt portion 12b moves the displacement of the belt portion 12b in the circumferential direction of the cross section of the ball 3 so that the belt portion 12b does not twist in the circumferential direction of the cross section of the ball 3. It is provided in an arrangement that regulates in opposite directions. Moreover, the convex part 16a contacts the ball 3 in a direction facing each guide surface and restricts the displacement of the ball 3, so that the belt portion 12b is prevented from being lifted from each guide surface.

無限循環路には、ベルト部12bの側縁部を案内する溝形状に構成された連結部材案内部が循環路全域にわたって設けられる。図1に示すように、負荷転走路は、ボール戻り通路9と異なり、従来と同様、ベルト部12bの側縁部を案内する連結体案内溝(連結部材案内部)が設けられた構成となっている。すなわち、連結部材案内部は、負荷転走路においては、ベルト部12bよりも若干大きくベルト部12bの外形に略対応した溝形状となっている。ボール連結帯12は、ベルト部12bがかかる連結体案内溝に対して摺動することにより、負荷転走路内を案内される。一方、ボール戻り通路9においては、凹部の一方の側面(凸部16aの両側面)がベルト部12bから離間するように構成されており、ベルト部12bとの間に潤滑剤流通隙間17b、17cが形成されている。すなわち、本実施例では、凸部16aの両側面が、本発明の転がり案内装置における連結部材案内部において潤滑剤流通隙間に面する他方の側面に対応する。   The infinite circulation path is provided with a connecting member guide portion configured in a groove shape for guiding the side edge of the belt portion 12b over the entire circulation path. As shown in FIG. 1, the load rolling path is different from the ball return path 9, and has a configuration in which a connecting body guide groove (connecting member guide portion) for guiding the side edge of the belt portion 12 b is provided as in the conventional case. ing. That is, the connecting member guide portion has a groove shape slightly larger than the belt portion 12b and substantially corresponding to the outer shape of the belt portion 12b in the load rolling path. The ball coupling band 12 is guided in the load rolling path by sliding the belt portion 12b with respect to the coupling body guide groove. On the other hand, in the ball return passage 9, one side surface of the concave portion (both side surfaces of the convex portion 16a) is configured to be separated from the belt portion 12b, and the lubricant circulation gaps 17b and 17c are formed between the belt return passage 9 and the belt portion 12b. Is formed. That is, in the present embodiment, both side surfaces of the convex portion 16a correspond to the other side surface facing the lubricant circulation gap in the connecting member guide portion in the rolling guide device of the present invention.

図10に示すように、方向転換路10は、ボール戻り通路9側から負荷転走路側にかけて断面形状が変化する(図10(b)→図10(c))。図9及び図10(b)、(c)に示すように、方向転換路10の断面形状は、凸部15a〜15cの高さがボール戻り通路9側から負荷転走路側にかけて徐々に減少していく(方向転換路内周案内溝10a及び方向転換路外周案内溝10bの溝底面の高さが凸部15a〜15cの先端面の高さに近づいていく)ように変化し、潤滑剤流通隙間17a〜17cの断面積は徐々に減少していく。特に方向転換路外周案内溝10bにおいては、ボール3に接触する案内面が方向転換路外周案内溝10bの側縁から中央部(凸部15a)に向かって徐々に広がっていくように断面形状が変化し、方向転換路内周案内溝10aにおいては、溝底面全体が同じ変化度合いでボール3の通過領域に徐々に近づいていくように断面形状が変化する。   As shown in FIG. 10, the cross-sectional shape of the direction changing path 10 changes from the ball return path 9 side to the load rolling path side (FIG. 10 (b) → FIG. 10 (c)). As shown in FIGS. 9 and 10B and 10C, the sectional shape of the direction changing path 10 is such that the heights of the convex portions 15a to 15c gradually decrease from the ball return path 9 side to the load rolling path side. (The height of the groove bottom surface of the direction change path inner periphery guide groove 10a and the direction change path outer periphery guide groove 10b approaches the height of the tip surfaces of the convex portions 15a to 15c) The cross-sectional areas of the gaps 17a to 17c gradually decrease. In particular, in the direction change path outer periphery guide groove 10b, the cross-sectional shape is such that the guide surface that contacts the ball 3 gradually expands from the side edge of the direction change path outer periphery guide groove 10b toward the center (convex portion 15a). In the direction change path inner circumferential guide groove 10a, the cross-sectional shape changes so that the entire groove bottom gradually approaches the passing region of the ball 3 with the same degree of change.

<本実施例の優れた点>
本実施例は、ボール戻り通路9及び方向転換路10において、断面R状の凸部15a、16a〜15c、16cによってボール3を支持・案内する構成なので、ボール戻り通路9及び方向転換路10とボール3との接触面積が低減される。これにより、ボール3がボール戻り通路9及び方向転換路10内を移動する際の摩擦抵抗が低減される。このように、無限循環路のうち無負荷域における接触面積の低減により、無限循環路全体におけるボール3の転動に影響を与えることなく、ボール3とボール戻り通路9及び方向転換路10との間の摩擦抵抗の低減を図ることができる。したがって、無限循環路におけるよりスムースなボール3の転動・循環を図ることができる。また、ボール3を転走路の内周面から離間させて支持することで、無負荷域における転走路内周面とボール3との間に隙間(潤滑剤流通隙間)を形成することができる。これにより、グリースの充填領域の拡大を図ることができ、潤滑性の向上を図ることができる。
<Excellent points of this embodiment>
In this embodiment, since the ball 3 is supported and guided by the convex portions 15a, 16a to 15c, 16c having a R-shaped cross section in the ball return path 9 and the direction change path 10, the ball return path 9 and the direction change path 10 The contact area with the ball 3 is reduced. Thereby, the frictional resistance when the ball 3 moves in the ball return path 9 and the direction change path 10 is reduced. In this way, by reducing the contact area in the no-load region of the infinite circulation path, the ball 3, the ball return path 9 and the direction change path 10 are not affected without affecting the rolling of the ball 3 in the entire infinite circulation path. It is possible to reduce the frictional resistance. Therefore, smoother rolling and circulation of the ball 3 in the infinite circulation path can be achieved. Further, by supporting the ball 3 while being separated from the inner peripheral surface of the rolling path, a gap (lubricant flow gap) can be formed between the rolling path inner peripheral surface and the ball 3 in the no-load region. As a result, the grease filling area can be expanded, and the lubricity can be improved.

また、本実施例の上記構成によれば、ボール3とボール戻り通路9の内周面との間に、通路全体にわたってグリースを充填・保持する十分な空間を確保することができる。したがって、潤滑性の向上を図ることができるとともに、グリースの供給過多による摺動抵抗の変化を抑制することができる。   Further, according to the above-described configuration of the present embodiment, a sufficient space for filling and holding the grease over the entire path can be secured between the ball 3 and the inner peripheral surface of the ball return path 9. Therefore, the lubricity can be improved and the change in sliding resistance due to excessive supply of grease can be suppressed.

また、ベルト部12bの両側縁部(一対の突出部)はそれぞれ、凸部16b、16cに対して1つの案内面のみで案内される片面支持の構成となっているので、摺動抵抗をより低減することができる。   Further, both side edge portions (a pair of projecting portions) of the belt portion 12b are configured to be supported on one side only by one guide surface with respect to the convex portions 16b and 16c, so that the sliding resistance is further increased. Can be reduced.

以上より、本実施例によれば、ボール戻り通路9内のグリースの流動性を高くして摺動抵抗の一層の低減化を図ることができる。したがって、ボール3の転がり抵抗の安定化、ボール3を連結するボール連結帯12の耐久性(信頼性)の更なる向上を図ることができ、軌道レール2と移動ブロック4との摺動抵抗の安定化等を図ることができる。   As described above, according to this embodiment, it is possible to increase the fluidity of the grease in the ball return passage 9 and further reduce the sliding resistance. Therefore, it is possible to stabilize the rolling resistance of the ball 3 and further improve the durability (reliability) of the ball coupling band 12 that couples the ball 3, and the sliding resistance between the track rail 2 and the moving block 4 can be improved. Stabilization and the like can be achieved.

また、本実施例では、凸部16b、16cの先端面がボール3を案内する案内面となり、凸部16b、16cの側面がベルト部12bを案内する案内面となる。すなわち、転動体案内部としての凸部16b、16cが連結部材案内部を兼ねた構成なのであり、ボール3を案内する案内面と、ベルト部12bを案内する案内面を個別に設ける場合に比して、大きな潤滑剤隙間を確保することが可能となっている。   In the present embodiment, the tip surfaces of the convex portions 16b and 16c serve as guide surfaces for guiding the ball 3, and the side surfaces of the convex portions 16b and 16c serve as guide surfaces for guiding the belt portion 12b. In other words, the convex portions 16b and 16c as the rolling element guide portions also serve as the connecting member guide portions, compared with the case where the guide surfaces for guiding the balls 3 and the guide surfaces for guiding the belt portions 12b are provided separately. Thus, it is possible to ensure a large lubricant gap.

また、本実施例では、凸部(転動体支持部)及び潤滑剤流通隙間の構造が、ボール戻り通路9から連続するように方向転換路10にも設けられている。これにより、方向転換路10においても、グリースの流動性を高めることができ、摺動抵抗の一層の低減化を図ることができる。   In this embodiment, the structure of the convex portion (rolling body support portion) and the lubricant circulation gap is also provided in the direction change path 10 so as to be continuous from the ball return path 9. Thereby, also in the direction change path 10, the fluidity | liquidity of grease can be improved and the further reduction of sliding resistance can be aimed at.

<その他>
転がり案内装置の構成は、上記実施例の構成に限定されるものではなく、例えば、レール及び移動ブロックの断面形状、無限循環路の条数及び形態は、適宜変更され得るものである。また、本実施例では、転動体としてボールを用いた例を示しているが、これに限らずローラも適用可能である。
<Others>
The configuration of the rolling guide device is not limited to the configuration of the above-described embodiment. For example, the cross-sectional shape of the rail and the moving block, the number of strips and the form of the infinite circulation path can be appropriately changed. In this embodiment, an example is shown in which a ball is used as the rolling element, but the present invention is not limited to this, and a roller is also applicable.

また、複数の転動体を連結する連結体の構成についても、本実施例で示す構成に限られるものではない。   Further, the configuration of the coupling body that couples the plurality of rolling elements is not limited to the configuration shown in the present embodiment.

凸部15、16を設ける数は、上記実施例のように3条に限定されるものではない。すなわち、ボールを路面から離間させてバランスよく支持し、かつ、ボールと路面との間に、潤滑剤の流動を妨げない十分な広さの空間を形成できる限りにおいて、4条以上設けてもよい。また、凸部15、16の配置間隔も、上記実施例にように120°の等配に限定
されるものではない。凸部15、16を3条配置する場合には、ボール3を転走路の路面から離間させてバランスよく支持できる限りにおいて、1条の凸部15、16に対し、ボール外周に沿って左右に90°〜180°の範囲でそれぞれ凸部を設けることができる。
The number of protrusions 15 and 16 is not limited to three as in the above embodiment. That is, as long as the ball is spaced apart from the road surface to support it in a well-balanced manner and a sufficiently wide space can be formed between the ball and the road surface without impeding the flow of the lubricant, four or more strips may be provided. . Further, the arrangement interval of the convex portions 15 and 16 is not limited to the 120 ° equidistant arrangement as in the above embodiment. When three protrusions 15 and 16 are arranged, as long as the ball 3 can be separated from the road surface of the rolling path and can be supported in a balanced manner, the protrusions 15 and 16 on the left and right sides of the single protrusions Protrusions can be provided in the range of 90 ° to 180 °.

図11(a)及び図11(b)に、ボール戻り通路9の内周面構成の変形例をそれぞれ示す。なお、実施例と共通する構成については同じ符号を付している。   11 (a) and 11 (b) show modifications of the inner peripheral surface configuration of the ball return passage 9, respectively. In addition, the same code | symbol is attached | subjected about the structure which is common in an Example.

図11(a)に示す変形例1では、実施例と異なり、内周側パイプ半体を従来と同じものを用いている。すなわち、凸部16b、16cを設けない従来の内周側パイプ半体23a1としている。外周側パイプ半体23bは実施例と同様である。ベルト部材12bの片面支持と、潤滑剤流通隙間17b、17cによる効果は実施例と同様である。なお、図示は省略するが、内周側パイプ半体を実施例の構成とし、外周側パイプ半体23bの構成を、凸部16aを設けない従来構成としてもよい。   In Modification 1 shown in FIG. 11A, unlike the embodiment, the same inner half pipe is used as in the prior art. That is, it is set as the conventional inner peripheral side pipe half body 23a1 which does not provide the convex parts 16b and 16c. The outer peripheral pipe half 23b is the same as in the embodiment. The effects of the one-side support of the belt member 12b and the lubricant flow gaps 17b and 17c are the same as in the embodiment. In addition, although illustration is abbreviate | omitted, it is good also considering the structure of an inner peripheral side pipe half body as an Example, and the structure of the outer peripheral side pipe half body 23b being a conventional structure which does not provide the convex part 16a.

図11(b)に示す変形例2では、外周側パイプ半体23b1が従来構成と実施例の構成とを組み合わせた構成となっている。すなわち、実施例では、凸部16aの両方の側面がベルト部12bから離間するように構成されているのに対し、変形例2では、凸部16a1の片方の側面のみがベルト部12bから離間するように構成されている。したがって、変形例2では、ベルト部12bの両側縁部のうち片側だけ(一対の突出部の一方だけ)が片面支持となり、一方の潤滑剤流通隙間17cだけが形成される。   In Modification 2 shown in FIG. 11 (b), the outer peripheral pipe half body 23b1 has a configuration combining the conventional configuration and the configuration of the example. That is, in the embodiment, both side surfaces of the convex portion 16a are configured to be separated from the belt portion 12b, whereas in Modification 2, only one side surface of the convex portion 16a1 is separated from the belt portion 12b. It is configured as follows. Therefore, in the second modification, only one side (only one of the pair of projecting portions) of the both side edge portions of the belt portion 12b is supported on one side, and only one lubricant circulation gap 17c is formed.

1…転がり案内装置、2…軌道レール、3…ボール、4…移動ブロック、5…ボール転走溝、8…負荷ボール転走溝、9…ボール戻り通路、10…方向転換路、12…ボール連結帯、12a…ボール穴、12b…ベルト部、12c…スペーサ部、15a、16a〜15c、16c…凸部、17a〜17c…潤滑剤流通隙間   DESCRIPTION OF SYMBOLS 1 ... Rolling guide apparatus, 2 ... Track rail, 3 ... Ball, 4 ... Moving block, 5 ... Ball rolling groove, 8 ... Loaded ball rolling groove, 9 ... Ball return path, 10 ... Direction change path, 12 ... Ball Connecting band, 12a ... ball hole, 12b ... belt part, 12c ... spacer part, 15a, 16a-15c, 16c ... convex part, 17a-17c ... lubricant flow gap

Claims (6)

転動体転走面が設けられた軌道部材と、該軌道部材に沿って多数の転動体を介して移動自在に設けられた移動部材と、を備え、
該移動部材には、前記軌道部材の前記転動体転走面に対応する負荷転動体転走面と、該負荷転動体転走面と所定間隔を隔てて並行に設けられる転動体戻り通路と、前記負荷転動体転走面と前記転動体戻り通路間を接続して転動体を循環させる一対の方向転換路と、が設けられ、
前記移動部材は、前記負荷転動体転走面と前記転動体戻り通路が形成された移動部材本体と、前記方向転換路が形成され、前記移動部材本体の移動方向両端に取り付けられる方向転換路構成部材と、を備えた構成とし、
前記多数の転動体は、転動体連結部材によって連結される構成で、該転動体連結部材は、転動体の移動方向に対して直交方向の転動体の断面輪郭部よりも外側に突出する一対の突出部を有しており、転動体戻り通路内周には、転動体連結部材の前記突出部を案内する一対の連結部材案内部が設けられている転がり案内装置において、
前記転動体戻り通路は、前記移動部材本体の貫通孔に挿入される円筒状部材の内周面によって形成されており、
前記円筒状部材の内周に、転動体の前記断面輪郭部に対して、該断面輪郭部の周方向に所定間隔を隔てて部分的に複数箇所で接触し得る複数の転動体支持部を設け、該複数の転動体支持部の間で、転動体の前記断面輪郭部との間に前記転動体戻り通路の全長にわたって潤滑剤を流通可能とする潤滑剤流通隙間を形成し、
さらに、前記連結部材案内部の少なくとも一方については、方向転換の際に転動体の循環路における内周側となる側の側面と外周側となる側の側面のうちの、いずれか一方の側面のみを前記転動体連結部材の前記突出部を案内する案内面とし、他方の側面については潤滑剤流通隙間に面する構成となっていることを特徴とする転がり案内装置。
A track member provided with a rolling element rolling surface, and a moving member provided movably through a number of rolling elements along the track member,
In the moving member, a loaded rolling element rolling surface corresponding to the rolling element rolling surface of the raceway member, and a rolling element return passage provided in parallel with the loaded rolling element rolling surface at a predetermined interval, A pair of direction change paths for circulating the rolling elements by connecting between the rolling elements rolling surfaces and the rolling element return passages are provided,
The moving member has a moving member main body in which the rolling rolling element rolling surface and the rolling element return passage are formed, a direction changing path structure in which the direction changing path is formed and attached to both ends of the moving member main body in the moving direction. And a configuration comprising a member,
The plurality of rolling elements are configured to be connected by a rolling element connecting member, and the rolling element connecting member protrudes outward from a cross-sectional contour portion of the rolling element in a direction orthogonal to the moving direction of the rolling element. In the rolling guide device having a protruding portion, and provided with a pair of connecting member guide portions for guiding the protruding portion of the rolling element connecting member on the inner periphery of the rolling element return passage,
The rolling element return passage is formed by an inner peripheral surface of a cylindrical member inserted into a through hole of the moving member body,
Provided on the inner periphery of the cylindrical member are a plurality of rolling element support portions that can partially contact at a plurality of locations with a predetermined interval in the circumferential direction of the cross sectional contour portion with respect to the cross sectional contour portion of the rolling element. In addition, a lubricant circulation gap is formed between the plurality of rolling element support portions so as to allow the lubricant to flow over the entire length of the rolling element return passage between the cross-sectional contour portion of the rolling elements,
Furthermore, for at least one of the connecting member guide portions, only one of the side surface on the inner circumferential side and the side surface on the outer circumferential side in the circulation path of the rolling element when changing the direction is used. Is a guide surface that guides the protruding portion of the rolling element coupling member, and the other side surface of the rolling guide device faces the lubricant flow gap.
前記連結部材案内部は、前記転動体支持部でもある請求項1に記載の転がり案内装置。   The rolling guide device according to claim 1, wherein the connecting member guide portion is also the rolling element support portion. 前記転動体支持部及び潤滑剤流通隙間の構造が、前記転動体戻り通路から連続するように方向転換路内周にも設けられている請求項1又は2に記載の転がり案内装置。   The rolling guide device according to claim 1, wherein the structure of the rolling element support portion and the lubricant circulation gap is also provided on the inner periphery of the direction change path so as to be continuous from the rolling element return path. 前記転動体支持部は、前記方向転換路において、前記転動体戻り通路から離れるにしたがって高さが徐々に減少することを特徴とする請求項1〜3のいずれか1項に記載の転がり案内装置。4. The rolling guide device according to claim 1, wherein the rolling element support portion gradually decreases in height in the direction changing path as the distance from the rolling element return path increases. 5. . 前記円筒状部材は、端面が前記方向転換路構成部材に突き当たることで長手方向の位置決めがなされることを特徴とする請求項1〜4のいずれか1項に記載の転がり案内装置。The rolling guide device according to any one of claims 1 to 4, wherein the cylindrical member is positioned in a longitudinal direction when an end surface of the cylindrical member abuts against the direction change path constituting member. 転動体転走面が設けられた軌道部材と、A raceway member provided with rolling element rolling surfaces;
複数の転動体であって、転動体の移動方向に対して直交方向の転動体の断面輪郭部よりも外側に突出する一対の突出部を有する転動体連結部材によって連結された、複数の転動体と、A plurality of rolling elements connected by rolling element connecting members having a pair of projecting portions projecting outward from a cross-sectional contour portion of the rolling element in a direction orthogonal to the moving direction of the rolling elements. When,
前記転動体を介して前記軌道部材に沿って移動自在に設けられた移動部材であって、A moving member provided movably along the track member via the rolling element,
前記転動体転走面に対応する負荷転動体転走面と、A loaded rolling element rolling surface corresponding to the rolling element rolling surface;
該負荷転動体転走面と所定間隔を隔てて並行に設けられる転動体戻り通路と、A rolling element return passage provided in parallel with the load rolling element rolling surface at a predetermined interval;
前記負荷転動体転走面と前記転動体戻り通路間を接続して転動体を循環させる一対の方向転換路と、A pair of direction change paths for circulating the rolling elements by connecting between the rolling elements rolling surface and the rolling element return passage;
前記負荷転動体転走面と前記転動体戻り通路が形成された移動部材本体と、A moving member body in which the rolling rolling element rolling surface and the rolling element return passage are formed;
前記方向転換路が形成され、前記移動部材本体の移動方向両端に取り付けられる方向転換路構成部材と、The direction changing path is formed, and direction changing path constituting members attached to both ends of the moving member main body in the moving direction;
を有する移動部材と、A moving member having
を備える転がり案内装置において、In a rolling guide device comprising:
前記転動体戻り通路は、前記移動部材本体に設けられた貫通孔に挿入される円筒状部材の内周面によって形成されており、The rolling element return passage is formed by an inner peripheral surface of a cylindrical member inserted into a through hole provided in the moving member main body,
前記転動体戻り通路及び前記方向転換路は、前記転動体に対して前記断面輪郭部の周方向に所定間隔を隔てて部分的に複数箇所で接触し得るように構成された複数の転動体支持部を有し、The rolling element return passage and the direction changing path are configured to support a plurality of rolling elements configured to be able to partially contact the rolling element at a plurality of locations at predetermined intervals in the circumferential direction of the cross-sectional contour portion. Part
前記複数の転動体支持部は、その少なくとも一部が、前記転動体連結部材の前記突出部を案内するように構成されているとともに、前記複数の転動体支持部の間に、少なくとも前記転動体戻り通路の全長にわたって、前記転動体、前記転動体連結部材及び前記転動体戻り通路の間を潤滑するための潤滑剤を流通可能とする潤滑剤流通隙間を形成することを特徴とする転がり案内装置。At least a part of the plurality of rolling element support portions is configured to guide the protruding portion of the rolling element coupling member, and at least the rolling element is provided between the plurality of rolling element support portions. A rolling guide device that forms a lubricant circulation gap that allows a lubricant to lubricate between the rolling elements, the rolling element coupling member, and the rolling element return path to be formed over the entire length of the return path. .
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