WO2008026351A1 - Dispositif de guidage linéaire doté d'un mécanisme d'absorption d'erreur - Google Patents

Dispositif de guidage linéaire doté d'un mécanisme d'absorption d'erreur Download PDF

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Publication number
WO2008026351A1
WO2008026351A1 PCT/JP2007/059460 JP2007059460W WO2008026351A1 WO 2008026351 A1 WO2008026351 A1 WO 2008026351A1 JP 2007059460 W JP2007059460 W JP 2007059460W WO 2008026351 A1 WO2008026351 A1 WO 2008026351A1
Authority
WO
WIPO (PCT)
Prior art keywords
moving block
absorbing mechanism
guide device
linear guide
error absorbing
Prior art date
Application number
PCT/JP2007/059460
Other languages
English (en)
Japanese (ja)
Inventor
Masashi Konomoto
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.
Publication of WO2008026351A1 publication Critical patent/WO2008026351A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/001—Bearings for parts moving only linearly adjustable for alignment or positioning
    • 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
    • F16C29/002—Elastic or yielding linear bearings or bearing supports
    • 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
    • F16C29/008—Systems with a plurality of bearings, e.g. four carriages supporting a slide on two parallel rails
    • 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
    • F16C29/0638—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 balls
    • F16C29/0642—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 balls with four rows of balls

Definitions

  • the present invention relates to a linear guide device having an error absorbing mechanism.
  • a track rail fixedly installed on a base, a moving block configured to be movable along the track rail, and rolling while applying a load between the track rail and the moving block.
  • a linear guide device constituted by a plurality of rolling elements is known. This type of linear guide device adjusts the clearance between the track rail and the moving block as necessary, and applies appropriate preload to the rolling elements such as balls and rollers, thereby allowing the rail and moving block to move. Since it is possible to prevent rattling between them and guide the object to be guided with high accuracy, it is frequently used in fields where high-accuracy movement is required, such as machine tools.
  • the present invention has been created in view of a strong viewpoint, and its purpose is to provide displacement generated between the moving block and the target object, in particular, the accuracy of mounting of the track rail, to the movement of the moving block.
  • An object of the present invention is to provide a linear guide device with an error absorbing mechanism that can reduce the influence as much as possible.
  • Another object of the present invention is that the track rail mounting work is easy, and even if there is a slight track rail mounting error, the error is absorbed and the object to be guided is detected.
  • An object of the present invention is to provide a linear guide device with an error absorbing mechanism capable of lightly guiding an object in a straight line.
  • Another object of the present invention is to provide a linear guide device with an error absorbing mechanism capable of exhibiting a function as a floating guide by combining alignment with an error absorbing function.
  • a linear guide device with an error absorbing mechanism includes a track rail fixedly installed on a base, and a moving block configured to be movable along the track rail.
  • An error absorbing mechanism comprising: a plurality of rolling elements that roll while applying a load between the track rail and the moving block; and an error absorbing mechanism that is installed in the moving block and exhibits an error absorbing function.
  • a linear guide device with the error absorbing mechanism is installed in conduction with a table on which a guide object is placed and a mounting opening provided in the table, and the moving block A cylindrical ring erected on top, a mounting plate installed on a side opposite to the moving block erected surface of the cylindrical ring, and installed between the moving block and the mounting plate; And an elastic member installed so as to surround the cylindrical ring, and fixing means for fixing and installing the mounting plate to the moving block via the cylindrical ring, and the mounting plate further When not fixed, the height of the table and the elastic member is set so that a gap is created between the mounting plate and the cylindrical ring, When the mounting plate is fixed by the fixing means, the elastic member is compressed so that the gap is eliminated.
  • the elastic member is installed between the moving block and the table, and between the table and the mounting plate. It can be done.
  • the elastic member may be installed only between the table and the mounting plate.
  • the elastic member can be installed only between the moving block and the table.
  • the elastic member is baked and fixed to the moving block, the table, or the mounting plate. .
  • the fixing means may be a bolt that is screwed into a screw hole provided in the moving block.
  • the elastic member and the mounting plate are configured to have substantially the same planar shape as the upper surface of the moving block.
  • TV can be that.
  • the elastic member and the mounting plate are formed in a circular shape substantially concentric with the cylindrical shape of the cylindrical ring.
  • TV can be that.
  • the displacement generated between the moving block and the guide object in particular, the influence of the mounting accuracy of the track rail on the movement of the moving block as much as possible. Can be reduced.
  • the linear guide device with an error absorbing mechanism according to the present invention, it is easy to mount the track rail, and even if there is a slight track rail mounting error, By absorbing this error, it is possible to guide the guide object straightly.
  • the error absorbing function has a calorie. Since it is also self-aligning, it can also function as a floating guide.
  • FIG. 1 is an external perspective view illustrating an embodiment of a linear guide device with an error absorbing mechanism according to the present embodiment.
  • FIG. 2 is an exploded perspective view of components for explaining a specific configuration of the linear guide device with an error absorbing mechanism shown in FIG. 1.
  • FIG. 3 is a partially broken perspective view for explaining a drive mechanism of the linear guide device with an error absorbing mechanism according to the present embodiment.
  • FIG. 4A is a longitudinal sectional side view for explaining the configuration of the linear guide device with an error absorbing mechanism according to the present embodiment, and particularly shows a state in which the mounting plate is not fixed.
  • FIG. 4B is a longitudinal sectional side view for explaining the configuration of the linear guide device with an error absorbing mechanism according to the present embodiment, and particularly shows a state in which the mounting plate is fixed by the fixing means. Yes.
  • FIG. 1 is an external perspective view illustrating an embodiment of a linear guide device with an error absorbing mechanism according to the present embodiment.
  • FIG. 2 is an exploded perspective view of parts for explaining a specific configuration of the linear guide device with an error absorbing mechanism shown in FIG.
  • the linear guide device with an error absorbing mechanism according to the present embodiment shown in FIGS. 1 and 2 includes, for example, a seat guide device used in a car welfare vehicle, a machine tool such as a machining center, a lathe, a milling machine, Used in robots such as component mounters for mounting components on electrical circuit boards, semiconductor and liquid crystal manufacturing equipment such as dicers and wire bonders, and realized that table 2 moves linearly or curvedly with respect to base 1.
  • a long and narrow track rail 3 is fixedly installed on the base 1.
  • a track-shaped moving block 4 is attached to the track rail 3 so as to be slidable along the track rail 3.
  • an error absorbing mechanism portion 21 that exhibits an error absorbing function is installed on the upper surface of the moving block 4.
  • a guide object to be installed on the moving block 4 and the table 2 is provided.
  • two track rails 3 and 3 and two moving blocks 4 and 4 are provided.
  • the number of track rails 3 and the number of moving blocks 4 depend on the use conditions and the use environment. Various settings can be made according to the above.
  • a plurality of balls 5 are installed as rolling elements between the track rail 3 and the moving block 4 so that the moving block 4 can slide lightly.
  • the plurality of balls 5 is a member that rolls while applying a load between the track rail 3 and the moving block 4, and the ball rolling groove 3 a that extends along the track rail 3 and the moving block 4. Rolls between the ball rolling groove 4a 'formed opposite to the ball rolling groove 3a'.
  • FIG. 3 is a partially broken perspective view for explaining the drive mechanism of the linear guide device with an error absorbing mechanism according to the present embodiment.
  • the linear guide device with an error absorbing mechanism according to the present embodiment includes the track rail 3 that is elongated in a straight line, and the moving block 4 that is slidably mounted relative to the track rail 3.
  • a plurality of balls 5 as rolling elements capable of rolling motion are installed between the track rail 3 and the moving block 4.
  • the moving block 4 includes a central portion 11 that faces the upper surface of the track rail 3 and side wall portions 12 that extend downward from the left and right sides of the central portion 11 and face the left and right side surfaces of the track rail 3. Yes.
  • the moving block 4 has a pair of side covers 13 and 13 at both ends in the moving direction. Yes.
  • Two load ball rolling grooves 4a and 4a are formed on the side wall 12 of the moving block 4 so as to face the ball rolling grooves 3a and 3a of the track rail 3.
  • the load ball rolling grooves 4a and 4a are In total, four strips are provided above and below the left and right side wall sections 12 and 12, respectively. These load ball rolling grooves 4a and 4ai are arranged in parallel with each other.
  • two upper and lower two ball return passages 14, 14 provided in parallel with a predetermined distance from the upper and lower two load ball rolling grooves 4a, 4a, and the load ball
  • a U-shaped direction change path (not shown) is provided for connecting the end of the rolling groove 4a and the end of the ball return passage 14 to circulate the balls 5.
  • These loaded ball rolling grooves 4a, a pair of direction changing paths, and a ball return path 14 constitute a circuit-shaped ball circulation path.
  • a screw hole 15 for installing the error absorbing mechanism portion 21 is provided in a substantially central portion of the upper surface of the central portion 11 of the moving block 4, and a screw hole 15 is provided on the inner peripheral surface of the screw hole 15.
  • the groove is cut and a fixing means such as a bolt can be screwed.
  • the plurality of balls 5 are arranged and accommodated in a ball circulation path, and can be connected in series via a ball retainer.
  • the side lid 13 is configured to match the cross-sectional shape of the moving block 4. Further, the side cover 13 is formed with an outer peripheral side of the direction changing path, and further, a lubricant supply passage for supplying the lubricant to the load ball rolling groove of the block body is provided.
  • the ball 5 When the moving block 4 moves relative to the track rail 3, the ball 5 ... receives a load between the ball rolling groove 3a of the track rail 3 and the load ball rolling groove 4a of the moving block 4. It will move by rolling force S.
  • the ball 5 moved to one end of the load ball rolling groove 4a of the moving block 4 passes through one direction change path, the ball return path 14, and the opposite direction change path, and then again loads in the load area. Enter ball rolling groove 4a.
  • the error absorbing mechanism unit 21 according to the present embodiment, which will be described later, detects this slight vibration. Absorbing effect is also demonstrated.
  • FIG. 4A is a longitudinal section for explaining the configuration of the linear guide device with an error absorbing mechanism according to the present embodiment. It is a surface side view and has shown the state where the plate for attachment is not being fixed especially.
  • FIG. 4B is a longitudinal sectional side view for explaining the configuration of the linear guide device with an error absorbing mechanism according to the present embodiment, and particularly shows a state in which the mounting plate is fixed by the fixing means.
  • the error absorbing mechanism section 21 As shown in FIG. 1, FIG. 2, FIG. 4A, and FIG. 4B, the error absorbing mechanism section 21 according to the present embodiment is installed on the upper surface of the moving block 4.
  • the constituent members of the error absorbing mechanism section 21 are electrically connected to the table 2 for placing the object to be guided and the mounting opening 2a provided in the table 2 and on the moving block 4.
  • the cylindrical ring 2 3 installed upright, the mounting plate 25 installed on the opposite side of the moving block standing surface of the cylindrical ring 23, installed between the moving block 4 and the mounting plate 25, and
  • the elastic members 22, 24 are installed so as to surround the cylindrical ring 23, and the bolts 26 are used as fixing means for fixing the mounting plate 25 to the moving block 4 through the cylindrical ring 23.
  • the table 2 is a flat plate-shaped member for linearly guiding a guide object, and is stretched over two moving blocks 4 installed. Further, it is made of a material having a predetermined rigidity corresponding to the weight of the guidance object.
  • the force that causes the cylindrical ring 23 to conduct through the opening hole 2 a is formed so that the diameter of the opening hole 2 a is larger than the outer diameter of the cylindrical ring 23.
  • the cylindrical ring 23 installed in conduction with the opening hole 2 a of the table 2 is erected on the movable block 4 on the lower surface side.
  • a mounting plate 25 is arranged on the upper surface side of the cylindrical ring 23.
  • Elastic members 22 and 24 are disposed between the moving block 4 and the table 2 and between the table 2 and the mounting plate 25, respectively.
  • the error absorbing mechanism portion 21 has a gap between the mounting plate 25 and the cylindrical ring 23 when the mounting plate 25 is not fixed.
  • the height of the table 2 and the elastic members 22 and 24 are set so that S is generated.
  • the elastic members 22 and 24 are compressed so that the gap S is eliminated.
  • the reason for this configuration is to ensure that the elastic members 22 and 24 can exhibit their heel performance regardless of the attachment.
  • the mounting plate 25 does not approach the moving block 4 more than the height of the cylindrical ring 23 by contacting the cylindrical ring 23 no matter how much the bolt 26 is tightened.
  • the elastic members 22, 24 will not be crushed more than necessary, and the heel performance will not be lost.
  • the error absorbing mechanism portion 21 exhibits a desired error absorbing function by adjusting the distance of the gap S provided between the mounting plate 25 and the cylindrical ring 23. Can be obtained.
  • these members are made of a highly rigid material, for example, It is preferable to be constituted by a metal material.
  • the pressing force of the elastic members 22 and 24 is applied to the cylindrical ring 23 from the lateral direction not only from the fastening force of the bolts 26 from the vertical direction, it is possible to select a material and shape corresponding to the external force. is necessary.
  • the elastic members 22, 24 it is preferable to use a member such as rubber.
  • the elastic members 2 and 24 may be in contact with the moving block 4, the table 2, or the mounting plate 25, but may be in contact with each other. You may make it do.
  • the error absorbing mechanism portion 21 In the error absorbing mechanism portion 21 according to the present embodiment, two elastic members 22, 24 are prepared, and between the moving block 4 and the table 2 and between the table 2 and the mounting plate 25. It was made to install in.
  • the installation conditions of the elastic member are not limited to those described above, and the elastic member 24 may be installed only between the table 2 and the mounting plate 25, or the moving block 4 and Install elastic member 22 only between table 2 You can do it.
  • the effect is reduced as compared with the case where only two elastic members are used, but the displacement generated between the moving block 4 and the guide object installed on the table 2, particularly the track rail 3
  • the effect of this embodiment that the influence of the mounting accuracy on the movement of the moving block 4 can be reduced as much as possible.
  • the mounting work of the track rail 3 is easy, and there is a slight track rail mounting error. Even so, it is possible to absorb the error and guide the guidance object in a straight line.
  • the shapes of the elastic members 22 and 24 and the mounting plate 25 are configured to be substantially the same planar shape as the upper surface of the moving block 4 .
  • the reason for this is that by installing the elastic members 22 and 24 over the entire upper surface of the moving block 4, stable error absorption and alignment functions can be exhibited.
  • the shapes of the elastic members 22, 24 and the mounting plate 25 are not limited to the illustrated planar shapes, and any shapes can be adopted.
  • the elastic members 22 and 24 and the mounting plate 25 are preferably configured to have a circular shape substantially concentric with the cylindrical shape of the cylindrical ring 23. In this way, by making the elastic members 22, 24 and the mounting plate 25 concentric with the cylindrical ring 23, an error capable of exhibiting the same elasticity and alignment in all 360 ° directions. A linear guide device with an absorption mechanism is realized.
  • any other fastening-fixing means such as force caulking fixing described by exemplifying the case where the bolt 26 is used as the fixing means used in the error absorbing mechanism portion 21 is adopted.
  • force caulking fixing described by exemplifying the case where the bolt 26 is used as the fixing means used in the error absorbing mechanism portion 21.

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

Abstract

L'invention concerne un dispositif de guidage linéaire doté d'un mécanisme d'absorption d'erreur comprenant une section de mécanisme d'absorption d'erreur (21) installée sur un bloc mobile (4). Cette section de mécanisme d'absorption d'erreur (21) comprend une table (2) permettant de monter un objet de guidage, un anneau tubulaire (23) installé de manière à passer à travers une ouverture de fixation (2a) disposée dans la table (2) et monté sur le bloc mobile (4), une plaque de fixation (25) installée sur le côté de l'anneau tubulaire (23), à l'opposé du plan de montage du bloc mobile, des éléments élastiques (22, 24) installés entre le bloc mobile (4) et la plaque de fixation (25) pour entourer l'anneau tubulaire (23), et des moyens (26) permettant de fixer la plaque de fixation (25) au bloc mobile (4) au moyen de l'anneau tubulaire (23). Lorsque la plaque de fixation (25) n'est pas fixée, un espace S existe entre la plaque de fixation (25) et l'anneau tubulaire (23). Un tel agencement permet d'obtenir un dispositif de guidage linéaire ayant une fonction d'absorption d'erreur et des propriétés d'alignement.
PCT/JP2007/059460 2006-08-31 2007-05-07 Dispositif de guidage linéaire doté d'un mécanisme d'absorption d'erreur WO2008026351A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-007068U 2006-08-31
JP2006007068U JP3126874U (ja) 2006-08-31 2006-08-31 誤差吸収機構付直線案内装置

Publications (1)

Publication Number Publication Date
WO2008026351A1 true WO2008026351A1 (fr) 2008-03-06

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PCT/JP2007/059460 WO2008026351A1 (fr) 2006-08-31 2007-05-07 Dispositif de guidage linéaire doté d'un mécanisme d'absorption d'erreur

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WO (1) WO2008026351A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113460596B (zh) * 2021-05-06 2023-05-16 华强方特（深圳）科技有限公司 滑轨自适应组件、装置及轨道系统
KR102471232B1 (ko) * 2021-12-01 2022-11-25 유홍근 Ｌｍ 가이드 및 이를 구비한 면진장치

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761242U (fr) * 1980-09-30 1982-04-12
JPS587433U (ja) * 1981-07-09 1983-01-18 ミツミ電機株式会社 スナップスイッチ装置
JPH0324333A (ja) * 1989-06-16 1991-02-01 Daimler Benz Ag 支持装置
JPH03297426A (ja) * 1990-04-18 1991-12-27 Siegel:Kk コーヒーミル等における防音構造
JPH0589987U (ja) * 1992-05-08 1993-12-07 バンドー化学株式会社 防振支持装置
JPH0939832A (ja) * 1995-08-03 1997-02-10 Iseki & Co Ltd 移動農機の調節式キャビン防振装置
JP2005016719A (ja) * 2003-05-30 2005-01-20 Thk Co Ltd 制振材料及びこの制振材料を組み込んだ運動案内装置
JP2005030570A (ja) * 2003-07-11 2005-02-03 Nichias Corp 防振遮熱板

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5761242U (fr) * 1980-09-30 1982-04-12
JPS587433U (ja) * 1981-07-09 1983-01-18 ミツミ電機株式会社 スナップスイッチ装置
JPH0324333A (ja) * 1989-06-16 1991-02-01 Daimler Benz Ag 支持装置
JPH03297426A (ja) * 1990-04-18 1991-12-27 Siegel:Kk コーヒーミル等における防音構造
JPH0589987U (ja) * 1992-05-08 1993-12-07 バンドー化学株式会社 防振支持装置
JPH0939832A (ja) * 1995-08-03 1997-02-10 Iseki & Co Ltd 移動農機の調節式キャビン防振装置
JP2005016719A (ja) * 2003-05-30 2005-01-20 Thk Co Ltd 制振材料及びこの制振材料を組み込んだ運動案内装置
JP2005030570A (ja) * 2003-07-11 2005-02-03 Nichias Corp 防振遮熱板

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