WO2010125895A1 - Élément de piste et dispositif de guidage de mouvement à l'aide d'un élément de piste - Google Patents

Élément de piste et dispositif de guidage de mouvement à l'aide d'un élément de piste Download PDF

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Publication number
WO2010125895A1
WO2010125895A1 PCT/JP2010/056191 JP2010056191W WO2010125895A1 WO 2010125895 A1 WO2010125895 A1 WO 2010125895A1 JP 2010056191 W JP2010056191 W JP 2010056191W WO 2010125895 A1 WO2010125895 A1 WO 2010125895A1
Authority
WO
WIPO (PCT)
Prior art keywords
longitudinal direction
track member
rolling
track
rolling element
Prior art date
Application number
PCT/JP2010/056191
Other languages
English (en)
Japanese (ja)
Inventor
勝也 飯田
拓也 堀江
勇樹 林
輝明 大岡
Original Assignee
Thk株式会社
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株式会社 filed Critical Thk株式会社
Publication of WO2010125895A1 publication Critical patent/WO2010125895A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
    • F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
    • F16C29/065—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end with rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/005—Guide rails or tracks for a linear bearing, i.e. adapted for movement of a carriage or bearing body there along
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • 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
    • F16C29/08—Arrangements for covering or protecting the ways

Definitions

  • the present invention relates to a track member and a motion guide device using the track member.
  • a step may occur at the joint of the raceway member, and various measures have been taken for the purpose of preventing the rolling element from being caused by this step.
  • the track member described in Patent Document 1 below forms a crowning surface that is scraped on a string in a rolling element rolling groove located on the outer peripheral side surface of the curve of the joint of the track member at the joint of the curved curve track member. Therefore, it is possible to move the slider smoothly without fluctuation of sliding resistance, and to prevent the rolling groove of the rolling element from fatigued early and causing flaking phenomenon. And a track member used in the motion guide device are described.
  • the conventional raceway member and the motion guide device using this raceway member can prevent the early arrival of the product life due to the damage of the rolling element by setting the crowning surface and the step amount.
  • Sharp corners in which elastic members (seal lips) that seal the lubricating oil sealed in the slider are formed on the crowning surface and the end surface of the step to smoothly roll the rolling elements rolling on the rolling grooves There is a problem in that the retention of the lubricant is reduced due to the collision.
  • the present invention has been made to solve the above-described problem, and prevents a rolling element from being defective due to a step generated at the joint of the track member even when the track member is formed by connecting the track members.
  • a raceway member according to the present invention is a raceway member in which a rolling element rolling surface is formed along a longitudinal direction, and the rolling element rolling at least at one end portion in the longitudinal direction of the raceway member.
  • the running surface has a bulging portion that bulges from an imaginary straight line connecting a predetermined position and an end point on an end surface orthogonal to the longitudinal direction in a cross-sectional shape along the longitudinal direction.
  • movement guide apparatus which concerns on this invention is the track member in which the rolling-element rolling surface was formed along the longitudinal direction, and the some rolling element which rolls the said rolling-element rolling surface And a movable member assembled in a movable manner along the track member, and the movable member is provided with an elastic member that seals the lubricant enclosed in the movable member with a predetermined deformation allowance.
  • the rolling element rolling surface of at least one end in the longitudinal direction of the raceway member has a predetermined position and an end point on the end surface orthogonal to the longitudinal direction in a cross-sectional shape along the longitudinal direction.
  • a track member having a bulging portion that bulges from the connected virtual straight line is provided.
  • the bulging portion is formed at one end in the longitudinal direction of the track member. In this way, it is possible to prevent the rolling element from being troubled due to the level difference that occurs in the product and to prolong the product life without reducing the lubricant retention of the seal lip.
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a perspective view for demonstrating the motion guide apparatus using the track member which concerns on this invention. It is a figure for demonstrating a motion of the elastic member in the joint of the track member of the movement guide apparatus which concerns on this invention. It is a figure for demonstrating the motion of the rolling element in the joint of the track member of the motion guide apparatus which concerns on this invention. It is sectional drawing for demonstrating the modification of the track member which concerns on this invention.
  • FIG. 1 is a perspective view for explaining a track member according to the present embodiment
  • FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1
  • FIG. 3 uses the track member according to the present embodiment.
  • FIG. 4 is a perspective view for explaining the motion guide device
  • FIG. 4 is a diagram for explaining the movement of the elastic member at the joint of the track member of the motion guide device according to the present embodiment
  • FIG. It is a figure for demonstrating the motion of the rolling element in the joint of the track member of the movement guide apparatus which concerns on a form
  • FIG. 6 is sectional drawing for demonstrating the modification of the track member which concerns on this embodiment.
  • the track member 10 forms a long track member 10 by connecting a plurality of track members 10a, 10a. Further, the track member 10a can fix the track member to a mounting base such as a base using fastening means such as fastening bolts in the mounting holes 11, 11 drilled from the upper surface to the lower surface of the track member 10a.
  • a mounting base such as a base using fastening means such as fastening bolts in the mounting holes 11, 11 drilled from the upper surface to the lower surface of the track member 10a.
  • the raceway member 10a has a rolling element rolling surface 12 formed on the outer surface along the longitudinal direction. Further, the raceway member 10a according to the present embodiment has two rolling element rolling grooves 12 formed in total on the both side surfaces connecting the upper surface and the lower surface. Further, as shown in FIG. 3, in the motion guide device 1, the moving member 20 is assembled on the rolling element rolling surface 12 via a plurality of rolling elements 30 so as to be reciprocally movable in the longitudinal direction.
  • connection of the track members 10a may be performed by connecting the adjacent mounting holes 11 and 11 using an appropriate connecting metal fitting or the like, and depending on environmental changes such as temperature and humidity between the track members 10a and 10a.
  • the track members 10a and 10a may be arranged and fixed to the mounting base with a gap in consideration of expansion and contraction of the track members 10a and 10a.
  • the method of connecting the track members 10a and 10a can be changed as appropriate.
  • an end face whose cross-sectional shape along the longitudinal direction is orthogonal to the longitudinal direction of the raceway member 10a from a predetermined position P is provided at one end portion in the longitudinal direction of the rolling element rolling surface 12 of the raceway member 10a according to the present embodiment.
  • a bulging portion 15 that bulges in the outer surface direction B from an imaginary straight line l 1 connecting the predetermined position P and the end point E is formed toward the end point E on 16.
  • the bulging part 15 is formed in the cross-sectional shape along this longitudinal direction in the one end part of the track member 10a, even if it is a case where a track member is formed by connecting a track member, It is possible to prevent a problem of the rolling element due to a step generated at the joint of the raceway member, and to prolong the product life without reducing the lubricant retaining property of the seal lip.
  • the bulging portion 15 will be described in detail with reference to FIG.
  • one end of the raceway member 10a is ground from a predetermined position P, which is the starting point of the bulging portion 15, toward an end point E, which is the ending point of the bulging portion 15,
  • the grinding is performed from the predetermined position P toward the end point E from the first surface 13 extending toward the end surface along the longitudinal direction of the raceway member 10a and the other end C of the first surface 13 opposite to the predetermined position P.
  • a second surface 14 extending in the direction.
  • the position of the other end C which is a continuous point between the first surface 13 and the second surface 14, is more outside the track member 10 a than the virtual straight line l 1 connecting the predetermined position P and the end point E.
  • the bulging portion 15 forms a bulging shape having the other end C as a vertex due to this shape.
  • the distance H 1 in the direction perpendicular to the longitudinal direction between the predetermined position P and the end point E is formed to be larger than a deformation allowance Z of the seal lip 40 described later, for example, 0.1 to 0.5 mm. Yes. Further, the distance L along the longitudinal direction between the predetermined position P and the end point E is formed smaller than the diameter R of the rolling element 30.
  • the distance H 2 in the direction perpendicular to the longitudinal direction between the predetermined position P and the other end C may be formed to a depth that can prevent the rolling element 30 from being damaged, for example, 1 to 50 ⁇ m. Is formed.
  • the 1st surface 13 is formed in the both sides
  • end plates 21 and 21 are attached to both end surfaces along the longitudinal direction of the moving member 20, and the end plate 21.
  • a seal lip 40 for sealing the lubricant sealed in the moving member 20 with a predetermined deformation margin Z is attached.
  • the seal lip 40 may be formed of any material as long as it elastically deforms with the movement of the moving member 20, but can be formed of, for example, rubber or synthetic resin.
  • the rolling element 30 is a rolling element rolling path formed by a rolling element rolling surface 12 and a load rolling element rolling surface (not shown) formed at a position facing the rolling element rolling surface 12 of the moving member 20. Rolling and passing through a no-load rolling element rolling path drilled in the moving member 20 substantially parallel to the loaded rolling element rolling surface through a direction changing path (not shown) formed in one end plate 21; An infinite circulation is realized by returning to the rolling element rolling path again through a direction changing path (not shown) formed on the other end plate 21.
  • FIG. 4 is a diagram illustrating the movement of the seal lip 40 when the moving member 20 moves from the position 1 toward the position 5 along the longitudinal direction of the track member 10.
  • the seal lip 40 is bent by the deformation allowance Z, and seals the lubricant enclosed in the moving member 20.
  • the bending of the seal lip 40 gradually extends along the first surface 13.
  • the position 3 which is the joint of the track members 10a, 10a
  • the seal lip 40 is completely separated from the first surface, the bent state is released, and it becomes a natural length state and passes through the joint.
  • the seal lip 40 when moving from position 3 to position 4, the distance in the direction perpendicular to the longitudinal direction between the end point E 2 formed on the end surface of the track member 10a and the predetermined position P 2 is the deformation margin Z of the seal lip 40. Since the seal lip 40 is formed larger than the end point E 2 formed as a sharp corner, the seal lip 40 can be prevented from being damaged.
  • FIG. 5 is a diagram illustrating the movement of the rolling element 30 when the moving member 20 passes through the joint of the track member 10.
  • the distance along the longitudinal direction between the predetermined position P and the end point E is smaller than the diameter R of the rolling element 30.
  • the diameter R of the rolling element 30 is formed in this way, the rolling element 30 existing between the predetermined position P 1 of one of the track members 10 a and the predetermined position P 2 of the other track member 10 a at the joint of the track members 10.
  • the number can be suppressed to at most two, and an excessive decrease in the rated load at the joint of the track member 10 can be suppressed.
  • the first surface 13 slides while bending the seal lip 40 as described above, it is ground. Further, since the first surface 13 is formed to prevent damage due to the joint of the raceway member 10 of the rolling element 30, it is sufficient that the first surface 13 is formed only at a portion where the rolling element rolling surface 12 is formed. In the raceway member 10a in this embodiment, the raceway member 10a is formed only on both side surfaces of the end face in the longitudinal direction of the raceway member 10a. On the other hand, since the second surface 14 is formed to prevent the seal lip 40 from being damaged, the second surface 14 is not only formed on both side surfaces of the raceway member 10a in the same manner as the first surface 13 described above, but also moved.
  • the member 20 and the track member 10 are formed over the entire circumference of the end surface of the track member 10a including the upper surface which is a surface facing the member 20 and the track member 10. Further, as described above, the second surface 14 is processed by roughing as long as it can prevent the seal lip 40 from coming into contact with the end point E 2 formed as a sharp corner.
  • the distance in the direction orthogonal to the longitudinal direction from the predetermined position P to the other end C is formed to a depth that can prevent the rolling element 30 from being damaged. It is possible to prevent the moving body 30 from being damaged.
  • the first surface 13 ′ of the track member according to the present embodiment can be formed in a curved arc shape.
  • a second bulge which is further swollen to the outer surface side of the track member 10a to the virtual straight line l 2 that connects the predetermined position P and the other end C
  • the part 17 can be formed.
  • the seal lip 40 can be bent smoothly without difficulty as the moving member 20 moves.
  • the bulging part formed in the end surface of the track member concerning this embodiment explained the case where it formed with the 1st surface and the 2nd surface
  • the bulging part is not limited to the shape mentioned above, for example, It can also be formed in a circular arc shape from the predetermined position P toward the end point E, and this circular arc shape can be formed into a perfect circle, an ellipse, a clothoid curve, or a curved shape combining these. Further, the same effect can be obtained even in a polygonal shape having a plurality of points as vertices. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

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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 porte sur des éléments de piste dans lesquels même lorsqu'un élément de piste allongé est formé par liaison d'éléments de piste, la durée de vie d'un produit peut être augmentée sans endommager des éléments élastiques pour l'étanchéité d'un lubrifiant au niveau de joints entre les éléments de piste ; et sur un dispositif de guidage de mouvement utilisant les éléments de piste. Dans chaque élément de piste, une surface de roulement de rouleau est formée dans la direction longitudinale de l'élément de piste. Dans au moins une partie extrémité de la surface de roulement de rouleau dans la direction longitudinale de l'élément de piste, une partie gonflement gonfle au-delà d'une ligne imaginaire qui s'étend d'une position prédéterminée à un point d'extrémité sur une surface d'extrémité dans la direction longitudinale pour relier le point prédéterminé et le point d'extrémité, dans la forme en coupe transversale de la partie gonflement dans la direction longitudinale.
PCT/JP2010/056191 2009-04-30 2010-04-05 Élément de piste et dispositif de guidage de mouvement à l'aide d'un élément de piste WO2010125895A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2009-111158 2009-04-30
JP2009111158A JP4660601B2 (ja) 2009-04-30 2009-04-30 軌道部材およびこの軌道部材を用いた運動案内装置

Publications (1)

Publication Number Publication Date
WO2010125895A1 true WO2010125895A1 (fr) 2010-11-04

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PCT/JP2010/056191 WO2010125895A1 (fr) 2009-04-30 2010-04-05 Élément de piste et dispositif de guidage de mouvement à l'aide d'un élément de piste

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Country Link
JP (1) JP4660601B2 (fr)
TW (1) TWI526632B (fr)
WO (1) WO2010125895A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9568045B2 (en) 2013-03-21 2017-02-14 Thk Co., Ltd. Support and guide device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105917127A (zh) * 2014-01-17 2016-08-31 日本精工株式会社 直线运动引导装置
JP6557997B2 (ja) * 2015-03-09 2019-08-14 日本精工株式会社 直動案内装置
JP7355421B1 (ja) 2022-10-24 2023-10-03 豊司 風間 摺動案内機構及び摺動案内機構の製造方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256660A (ja) * 1985-09-04 1987-03-12 Nippon Seiko Kk リニアガイド装置用軌道レ−ルのボ−ル転動溝加工方法
JP2002147453A (ja) * 2000-11-10 2002-05-22 Enshu Ltd 潤滑油供給装置及びこれを用いた直線運動装置
JP2007205479A (ja) * 2006-02-02 2007-08-16 Nippon Thompson Co Ltd 繋ぎ用軌道レールを備えた直動案内ユニット

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6256660A (ja) * 1985-09-04 1987-03-12 Nippon Seiko Kk リニアガイド装置用軌道レ−ルのボ−ル転動溝加工方法
JP2002147453A (ja) * 2000-11-10 2002-05-22 Enshu Ltd 潤滑油供給装置及びこれを用いた直線運動装置
JP2007205479A (ja) * 2006-02-02 2007-08-16 Nippon Thompson Co Ltd 繋ぎ用軌道レールを備えた直動案内ユニット

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9568045B2 (en) 2013-03-21 2017-02-14 Thk Co., Ltd. Support and guide device

Also Published As

Publication number Publication date
TWI526632B (zh) 2016-03-21
JP4660601B2 (ja) 2011-03-30
TW201104093A (en) 2011-02-01
JP2010261483A (ja) 2010-11-18

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