WO2007004504A1 - Dispositif guide de roulement et son procede de fabrication - Google Patents

Dispositif guide de roulement et son procede de fabrication Download PDF

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Publication number
WO2007004504A1
WO2007004504A1 PCT/JP2006/312979 JP2006312979W WO2007004504A1 WO 2007004504 A1 WO2007004504 A1 WO 2007004504A1 JP 2006312979 W JP2006312979 W JP 2006312979W WO 2007004504 A1 WO2007004504 A1 WO 2007004504A1
Authority
WO
WIPO (PCT)
Prior art keywords
ball
flange portion
rolling
slide member
load
Prior art date
Application number
PCT/JP2006/312979
Other languages
English (en)
Japanese (ja)
Inventor
Takeki Shirai
Original Assignee
Thk Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thk Co., Ltd. filed Critical Thk Co., Ltd.
Priority to JP2007523991A priority Critical patent/JP4804461B2/ja
Publication of WO2007004504A1 publication Critical patent/WO2007004504A1/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
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • 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
    • F16C29/064—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 two rows of balls, one on each side of the rail

Definitions

  • the present invention is a rolling assembly in which a track rail and a slide member are assembled via a large number of balls, and an object to be mounted fixed to the slide member can freely reciprocate along the track rail.
  • a rolling guide device in which the slide member has an infinite circulation path for the ball, and the slide member can continuously move along the track rail while circulating the ball infinitely, and a method for manufacturing the same. It is about.
  • a rolling guide device in which a slide member mounted with a movable body such as a table continuously moves along a track rail is frequently used.
  • the slide member is assembled to the track rail via a large number of balls, and the ball rolls between the slide member and the track rail while applying a load, thereby allowing the slide to slide.
  • the movable body mounted on the member can be moved lightly with very little resistance along the track rail.
  • the slide member is provided with an infinite circulation path of the ball, and the slide member can continuously move along the track rail by circulating the ball in the infinite circulation path. It has become.
  • the raceway rail is formed with a ball rolling groove along the longitudinal direction, while the slide member is formed with a load rolling groove facing the ball rolling groove of the track rail.
  • a load rolling path of the ball is formed by the ball rolling groove on the track rail side and the load rolling groove on the slide member side. That is, the ball is configured to contact the ball rolling groove on the track rail side and the load rolling groove on the slide member side, and roll while applying a load acting between them.
  • an unloaded rolling passage is formed in the slide member in parallel with the loaded rolling groove, and both ends of the unloaded rolling passage are formed by a pair of direction changing paths formed in an arc shape. Connected with the runway!
  • the ball is released from the load at the end of the load rolling path, and the ball rolling groove force separation of the track rail is released. Take off and enter the direction change path, and roll from this direction change path to the no-load rolling path.
  • the ball that has rolled in the no-load rolling path is returned to the ball rolling groove of the track rail through the opposite direction change path, and rolls in the loaded rolling path again while applying a load.
  • the slide member has an infinite circulation path of the ball that is continuous with the loaded rolling path, the direction changing path, the no-load rolling path, and the direction changing path, and the ball force S circulates through the infinite circulation path.
  • the slide member can move continuously along the rail rail without any stroke limitation.
  • the slide member is composed of a block body made of hardenable steel and a pair of synthetic resin end caps fixed to both front and rear end faces of the block body.
  • a rough shape is formed by drawing, then a mounting surface of the movable body, a tap hole for fastening a fixing bolt, and a through-hole serving as the no-load rolling passage
  • the end cap is provided with a scooping portion for separating the ball, such as the rolling groove of the orbital rail or the above-described direction change path, and is formed by injection molding of a synthetic resin.
  • Patent Document 1 Japanese Patent Laid-Open No. 10-009264
  • Patent Document 2 Actual Fair 4 53459
  • the present invention has been made in view of such problems, and the object of the present invention is to reduce the number of parts and reduce the number of processing steps when forming a slide member.
  • An object of the present invention is to provide a rolling guide device that can be manufactured easily and inexpensively and that can improve the reliability of processing accuracy, and a method for manufacturing the same.
  • a rolling guide device is assembled to a track rail in which a rolling groove of a ball is formed along a longitudinal direction and the track rail via a large number of balls.
  • a slide member to be attached This slide member has a lateral web and a pair of flange portions erected from the lateral web, and is formed in a channel shape.
  • a pair of ball through holes each having an inner diameter larger than the ball diameter is formed in each flange portion at a predetermined interval, and penetrates in a direction perpendicular to the longitudinal direction of the track rail, and the inner surface of each flange portion.
  • a load straight groove is formed between the pair of ball through holes so that the ball rolls while applying a load to and from the raceway rolling groove.
  • a circulation path forming member is attached to each flange portion, and the ball rolling on the straight load groove is circulated to the back surface of the flange portion through one ball passage hole, and the other side is circulated. It is configured to circulate again through the load straight groove through the ball through hole.
  • a predetermined cross-sectional shape may be given by using a steel drawing process in the same manner as the conventional block body described above, and bending force may be applied to the metal plate member. It is also possible to give a channel-like shape by giving a twist and bending a pair of flange portions against the horizontal web.
  • the ball circulates between the inner side surface and the outer side surface of the flange portion to be applied through a pair of ball through holes formed in the flange portion of the slide member.
  • the ball through hole is formed so as to penetrate the flange portion in a direction perpendicular to the longitudinal direction of the track rail, so that the depth of the forceful ball through hole can be easily drilled into the flange portion. Is possible.
  • it is formed on one surface of the flange between these ball holes
  • the loaded straight groove can be easily and accurately formed by cutting using an end mill or the like.
  • the slide member is formed by bending the metal plate member, the ball through hole is extremely easily made into the flange portion before the flange portion is bent with respect to the lateral web. It is possible to perforate.
  • the load straight groove can be easily and accurately formed by cutting using an end mill or the like, even if it is a flat metal plate member before bending. It is.
  • the ball through hole and the load straight groove can be easily formed on a flat metal plate member, and the metal plate member is further bent so that the flange portion is formed on the horizontal web. By bending up, a channel-shaped slide member having a track groove in a pair of flange portions can be easily formed.
  • the circulation path forming member attached to each flange portion of the slide member can be formed as one part by using synthetic resin injection molding or metal injection molding.
  • An infinite circulation path of balls is constructed on the slide member simply by attaching the circulation path forming member to each flange portion.
  • FIG. 1 is a perspective view showing a first embodiment of a rolling guide apparatus to which the present invention is applied.
  • FIG. 2 is a front sectional view of the rolling guide device shown in FIG.
  • FIG. 3 is an enlarged sectional view showing an infinite circulation path of balls in the rolling guide device shown in FIG.
  • FIG. 4 is an enlarged cross-sectional view showing a state where the circulation path forming member is separated from the flange portion of the slide member.
  • FIG. 5 is a cross-sectional view taken along line V—V in FIG.
  • FIG. 6 is a perspective view showing a method for manufacturing a slide member.
  • FIG. 7 is a cross-sectional view showing a state in which a load straight groove is cut into the flange portion of the slide member.
  • FIG. 8 is a cross-sectional view showing a second embodiment of a rolling guide device to which the present invention is applied. Explanation of symbols
  • FIG. 1 and FIG. 2 show a first embodiment of a rolling guide device to which the present invention is applied.
  • the rolling guide device according to the first embodiment is assembled to the track rail 1 with a long track rail 1 having a substantially rectangular cross section and a channel shape and a large number of balls 3.
  • the slide member 2 is attached, and the slide member 2 is configured to freely reciprocate on the track rail 1 so as to straddle the track rail 1.
  • one rolling groove 10 for the ball 3 is formed along the longitudinal direction.
  • the rolling groove 10 has two rolling surfaces where the ball 3 rolls at an angle of 90 °, and the cross section has a so-called Gothic arch shape. Therefore, the ball 3 contacts the rolling groove at two points, and the contact direction is inclined by 45 ° with respect to the bottom surface of the track rail 1.
  • a plurality of bolt mounting holes 11 are formed through the track rail 1 at predetermined intervals in the longitudinal direction, and the track rail 1 is attached to the beds and columns of various machines using the powerful bolt mounting holes 11. It can be attached to fixed parts such as.
  • the slide member 2 has a lateral web 20 and a pair of flange portions 21 and 21 orthogonal to the lateral web 20 and is formed in a channel shape. As shown in FIG. It straddles the track rail through a gap. That is, the track rail 1 is located between the pair of flange portions 21 and 21 of the slide member 2.
  • the upper surface of the horizontal web 20 is a mounting surface 22 of a movable body such as a table, and a tapped hole into which a mounting screw is screwed into the horizontal web 20 that is applied. 23 is formed.
  • a load straight groove 31 facing the rolling groove 10 of the track rail 1 is formed on the inner surface of the flange portion 21 of the slide member 2 facing the side surface of the track rail 1 with a slight gap.
  • the cross section of the load straight groove 31 is formed in a Gothic arch shape, and the ball 3 is in contact with the load straight groove 31 at two points.
  • the contact direction of the ball 3 and the load straight groove 31 is inclined by 45 degrees up and down with respect to the normal direction of the inner surface of the flange portion 21 (left and right direction in FIG. 2). Any load acting in the direction perpendicular to the moving direction can be applied between the track rail 1 and the slide member 2.
  • FIG. 3 is a cross-sectional view showing an infinite circulation path of the ball 3 provided in each flange portion 21, and FIG. 4 is a cross-sectional view showing a state where the circulation path forming member 4 is separated from the flange portion 21.
  • a pair of ball through holes 24 are formed in the flange portion 21 of the slide member 2 at a predetermined interval in the longitudinal direction of the track rail 1.
  • the ball through hole 24 penetrates between the inner side surface and the outer side surface of the flange portion 21, and as shown in FIG. 5, the cross section has the shape of a long hole extending in the longitudinal direction of the track rail 1.
  • the load straight groove 31 is formed between the pair of ball through holes 24, 24 on the inner surface of the flange portion 21.
  • an unloaded straight groove 33 is formed between the pair of ball through holes 24 on the outer surface of the flange portion 21.
  • the unloaded straight groove 33 is formed with a width slightly larger than the diameter of the ball 3 and a depth slightly larger than the diameter of the ball 3! RU
  • the ball 3 travels between the inner surface and the outer surface of the flange portion 21 via the ball passage hole 24, and is formed on the outer surface and the load straight groove 31 formed on the inner surface of the flange portion 21. It circulates indefinitely between the no-load straight groove 33. That is, each flange portion 21 has a central wall 2 surrounded by a pair of ball through holes 24, 24, a load straight groove 31 and a no-load straight groove 33. 5 exists, and the ball 3 circulates infinitely around the central wall 25.
  • convex curved inner guide surfaces 26 are formed at both ends in the longitudinal direction of the central wall 25, and the smooth movement of the ball 3 between the load straight groove 31 and the no-load straight groove 33 is provided. It is illustrated.
  • the circulation path forming member 4 includes a pair of direction changing portions 40 that fit into the ball through holes 24, and a passage cover portion that is provided with the direction changing portions 40 and that covers the no-load linear groove 33.
  • 41, and the direction changing portion 40 and the passage cover portion 41 are integrally formed by injection molding of synthetic resin.
  • the passage cover portion 41 is formed in a flat plate shape, and is fitted into and covers the unloaded straight groove 33, and the ball return passage through which the ball 3 rolls in an unloaded state is provided as the unloaded straight groove 33. Formed together with.
  • the direction changing portion 40 has an end portion of the center wall 25 of the slide member 2, that is, a concave curved outer guide surface 42 facing the inner guide surface 26, and the inner guide surface 26 and the outer guide surface.
  • the face 42 and each other face each other, thereby forming a turning path that changes the traveling direction of the ball 3 by 180 degrees.
  • the outer guide surface 42 is smoothly continuous with the inner surface of the passage cover portion 41 so that the ball 3 can smoothly travel between the direction change path and the ball return path.
  • a raising portion 43 is formed to raise and separate the ball 3 rolling on the rolling groove 10 of the track rail 1 from the rolling groove 10.
  • the ⁇ ⁇ ⁇ raised portion 43 slightly protrudes the inner surface force of the flange portion 21, and when the slide member 2 is assembled to the track rail 1, the rake portion 42 is inserted into the rolling groove 10 of the track rail 1.
  • the rolling of the ball 3 in the powerful rolling groove 10 is blocked, and the ball 3 is guided to the direction change path.
  • the circulation path forming member 4 can be formed not only by injection molding of synthetic resin but also by metal injection molding (MIM).
  • MIM metal injection molding
  • the circulation path forming member 4 having such a structure is positioned with respect to the forceful flange portion 21 by fitting the direction changing portion 40 to the ball passage hole 24 of the flange portion 21.
  • An infinite circulation path of the ball 3 is completed around the central wall 25.
  • the circulation path forming member 4 can be fixed to the flange portion 21 by using a fixing screw (not shown) .1S Is it a viewpoint of reducing the number of parts constituting the slide member 2 and saving the assembly work? Therefore, when the direction changing portion 40 is fitted into the ball passage hole 24, the direction changing portion 40 to be applied is locked to the flange portion 21, and the circulation path forming member 4 and the flange portion 21 are separated. Preferred to be configured to prevent.
  • the ball 3 that has passed through the ball passage hole 24 enters an unloaded straight groove 33 formed on the outer surface of the flange portion 21, and after rolling in the unloaded straight groove 33 in an unloaded state, the other ball thread is passed through. It circulates again through the hole 24 to the load straight groove 31 formed on the inner surface of the flange portion 21.
  • the ball 3 circulates around the central wall 25 formed in the flange portion 21 of the slide member 2 in this way, and accordingly, the slide member 2 continuously moves along the track rail 1 without interruption. Is possible.
  • the slide member 2 is formed by bending a metal plate member 5 such as a flat steel plate into a channel shape, and the ball through hole 24, the load linear groove 31, the no-load linear groove 33 before being bent.
  • the inner guide surface 26, the tap hole 23, etc. are processed.
  • the flat metal plate member 5 is divided into regions corresponding to the horizontal web 20 and the pair of flange portions 21, 21, and as shown in FIG. 6, regions corresponding to the flange portions 21 are formed.
  • a pair of ball through holes 24, 24 are formed penetrating at a predetermined interval.
  • a load straight groove 31, a no-load straight groove 33 and an inner guide surface 26 are formed between the pair of ball through holes 24, 24.
  • the load straight groove 31 is formed with respect to the surface serving as the inner surface of the flange portion 21, and the no-load straight groove 33 is formed relative to the surface serving as the outer surface of the flange portion 21.
  • these loaded straight groove, unloaded straight groove and inner guide surface are Can be formed by Scaroe.
  • the depth of the load linear groove 31 and the no-load linear groove 33 can be adjusted with high accuracy by numerical control of the processing machine, and the curvature of the inner guide surface can also be adjusted with high accuracy. .
  • the metal plate member 5 is tapped with respect to the region corresponding to the lateral web 20.
  • the hole 23 is processed, and a bending reference groove 27 having a substantially V-shaped cross section is formed at the boundary portion between the lateral web 20 and the flange portion 21.
  • the flange portion 21 can be accurately bent with respect to the transverse web 20. If the flange portion 21 where the plate thickness of the metal plate member 5 is thin can be bent with sufficient accuracy, it is not necessary to form such a bending-through reference groove 27.
  • a surface hardening process is performed on the region corresponding to the flange portion 21 of the metal plate member 5.
  • this surface hardening treatment induction hardening, carburizing hardening, nitriding treatment or the like can be used.
  • a finishing process may be performed on the loaded straight groove 31 and the unloaded straight groove 33 by using a carbide end mill or the like after the quenching process.
  • the load straight groove 31, the no-load straight groove 33, and the ball threading are performed on the quenched metal plate member 5. You may make it form the hole 24 grade
  • the slide member in the conventional rolling guide device uses a die for the rod-shaped steel material. After the drawing process, the loaded rolling groove on which the ball rolls is ground with a mortar, and the ball return hole is drilled in parallel with the loaded rolling groove. Was necessary.
  • the slide member 2 in the rolling guide device of the present invention configured as described above is subjected to cutting and bending with relatively low labor and cost on the metal plate member 5, and further, a circulation path forming member. 4 can complete the slide member 2 with the infinite circulation path of the ball 3, and the rolling guide device that allows the slide member 2 to move infinitely along the track rail 1 can be easily and inexpensively. It is possible to produce. Further, since the number of processing steps for the slide member 2 is reduced, it is possible to increase the reliability of the processing accuracy.
  • FIG. 8 is a cross-sectional view showing a second embodiment of the rolling guide device to which the present invention is applied.
  • the channel-shaped slide member is formed by bending the metal plate member.
  • the ball is passed through the flange portion 21 of the sliding member 7 which is applied.
  • the slide member 2 having an infinite circulation path for the ball 3 is completed by forming the hole 24, the load linear groove 31 and the no-load linear groove 33 and further mounting the circulation path forming member 4. Since the slide member 7 has the same configuration as that of the first embodiment except that the slide member 7 is formed by drawing a steel material, the common configuration is the same as that of the first embodiment in FIG.
  • the same reference numerals are given, and detailed descriptions thereof are omitted.
  • the rolling groove 10 of the ball 3 is a force track formed by only one strip on each side of the track rail 1.
  • Two rolling grooves are formed on each side of the rail 1, and two load straight grooves 31 corresponding to the rolling grooves 10 are formed on the slide members 2 and 7. It ’s okay!
  • the slide member 2 formed in a channel shape extends along the track rail 1 in a state of straddling the track rail 1.
  • the track rail is formed in a larger channel shape than the slide member, and the slide member 2 formed in the channel shape moves in the groove provided in the striking track rail. It may be configured.
  • the load straight groove 31 is formed on the slide member 2 with a flange. Although it is formed on the outer surface that is not on the inner surface of the lung portion 21, it is sufficient to make the bending direction of the metal plate member 5 shown in Fig. 6 opposite to the direction shown in the figure. It is not necessary to change the configuration of the straight groove 33 and the ball through hole 24.

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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 guide de roulement susceptible d’être facilement fabriqué à faible coût du fait du nombre réduit de pièces constituant un élément de coulisse (2) et du temps d’usinage réduit de cet élément de coulisse. L’élément de coulisse (2) prend la forme d’un canal de façon à présenter un dos (20) et une paire de parties de rebord (21). Une paire de trous (24) de passage de billes (3) dont le diamètre intérieur est supérieur au diamètre des billes (3) sont ménagés dans chacun des rebords (21), et une rainure rectiligne de charge (31) dans laquelle roulent les billes (3) et portant une charge avec la rainure de roulement (10) d’un rail (1) est ménagée dans la surface intérieure de chacune des parties de rebord. Un élément (4) formant passage de circulation servant à faire circuler les billes (3) roulant dans la rainure rectiligne de charge (31) sur la surface extérieure de chacune des parties de rebord (21) à travers un trou (24) de passage de billes et à les faire recirculer jusqu’à la rainure rectiligne de charge (31) à travers l’autre trou (24) de passage de billes est monté sur chacune des parties de rebord (21).
PCT/JP2006/312979 2005-06-30 2006-06-29 Dispositif guide de roulement et son procede de fabrication WO2007004504A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007523991A JP4804461B2 (ja) 2005-06-30 2006-06-29 転がり案内装置及びその製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005-191971 2005-06-30
JP2005191971 2005-06-30

Publications (1)

Publication Number Publication Date
WO2007004504A1 true WO2007004504A1 (fr) 2007-01-11

Family

ID=37604372

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2006/312979 WO2007004504A1 (fr) 2005-06-30 2006-06-29 Dispositif guide de roulement et son procede de fabrication

Country Status (2)

Country Link
JP (1) JP4804461B2 (fr)
WO (1) WO2007004504A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04248018A (ja) * 1990-09-10 1992-09-03 Marc Lecomte 直線ガイド装置
JPH05248433A (ja) * 1992-03-09 1993-09-24 Koyo Seiko Co Ltd 直動形ガイド装置
JP2003239966A (ja) * 2002-02-19 2003-08-27 Nsk Ltd 直動装置
JP2003329036A (ja) * 2002-05-14 2003-11-19 Nippon Thompson Co Ltd 直動案内ユニット

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4424840B4 (de) * 1994-07-14 2006-04-27 Ina-Schaeffler Kg Linearwälzlager

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04248018A (ja) * 1990-09-10 1992-09-03 Marc Lecomte 直線ガイド装置
JPH05248433A (ja) * 1992-03-09 1993-09-24 Koyo Seiko Co Ltd 直動形ガイド装置
JP2003239966A (ja) * 2002-02-19 2003-08-27 Nsk Ltd 直動装置
JP2003329036A (ja) * 2002-05-14 2003-11-19 Nippon Thompson Co Ltd 直動案内ユニット

Also Published As

Publication number Publication date
JP4804461B2 (ja) 2011-11-02
JPWO2007004504A1 (ja) 2009-01-29

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