JP2005201361A - Linear guide device - Google Patents

Linear guide device Download PDF

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Publication number
JP2005201361A
JP2005201361A JP2004008239A JP2004008239A JP2005201361A JP 2005201361 A JP2005201361 A JP 2005201361A JP 2004008239 A JP2004008239 A JP 2004008239A JP 2004008239 A JP2004008239 A JP 2004008239A JP 2005201361 A JP2005201361 A JP 2005201361A
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Japan
Prior art keywords
sleeve
cylindrical roller
guide device
hole
divided
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JP2004008239A
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Japanese (ja)
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Soichiro Kato
総一郎 加藤
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NSK Ltd
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NSK Ltd
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Priority to JP2004008239A priority Critical patent/JP2005201361A/en
Publication of JP2005201361A publication Critical patent/JP2005201361A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C29/00—Bearings for parts moving only linearly
    • F16C29/04—Ball or roller bearings
    • F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
    • F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
    • F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • 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

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a linear guide device capable of preventing various harmful influences caused by displacement of two divided faces of a sleeve dividing the sleeve into two parts at a central part of a cylindrical roller rolling surface in a radial direction of the sleeve. <P>SOLUTION: A projecting section 18 is arranged on one of the divided faces between the divided faces 17a and 17b dividing the sleeve 11 into two parts at the central part of the cylindrical roller rolling surface 12a, and a hole 19 fit with the projecting part 18 is arranged on another divided face. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、直線運動する機械部品をその移動方向に案内する装置として、工作機械等の各種産業機械で使用される直動案内装置に関するものであり、特に、円筒ころを転動体として用いた直動案内装置に関する。   The present invention relates to a linear motion guide device used in various industrial machines such as machine tools as a device for guiding a linearly moving machine part in its moving direction, and in particular, a linear motion device using a cylindrical roller as a rolling element. The present invention relates to a motion guide device.

従来、この種の直動案内装置は、図４に示すように、スライダ１と案内レール２を備えており、スライダ１は、ほぼコ字状の端面を前後方向に有する金属製のスライダ本体３と、このスライダ本体３の端面を覆う一対のエンドキャップ４とから構成されている。
スライダ本体３の内側面は案内レール２の側面と対向しており、案内レール２の側面には、転動体軌道面５が二条ずつ形成されている。これらの転動体軌道面５はスライダ本体３の内側面に形成された転動体軌道面６（図５参照）と各々対向しており、転動体軌道面５と転動体軌道面６との間には多数の円筒ころ７が設けられている。 Conventionally, as shown in FIG. 4, this type of linear motion guide device includes a slider 1 and a guide rail 2, and the slider 1 is a metal slider body 3 having a substantially U-shaped end surface in the front-rear direction. And a pair of end caps 4 covering the end face of the slider body 3.
The inner side surface of the slider body 3 faces the side surface of the guide rail 2, and two rolling element raceway surfaces 5 are formed on the side surface of the guide rail 2. These rolling element raceway surfaces 5 are respectively opposed to rolling element raceway surfaces 6 (see FIG. 5) formed on the inner surface of the slider body 3, and between the rolling element raceway surfaces 5 and the rolling element raceway surfaces 6. A large number of cylindrical rollers 7 are provided.

円筒ころ７は金属、セラミックス等の硬質材料で形成されており、各円筒ころ７の間にはセパレータ８（図６参照）が設けられている。このセパレータ８は合成樹脂から形成されており、各セパレータ８の左右側面部には、円筒ころ７を保持するための腕部８ａ（図７〜図９参照）が設けられている。
また、円筒ころ７はスライダ１が案内レール２の長手方向に相対移動すると転動体軌道面５，６を転動するようになっており、エンドキャップ４には、転動体軌道面５，６を転動した円筒ころ７を方向転換させるための方向転換路９（図６参照）が形成されている。 The cylindrical roller 7 is made of a hard material such as metal or ceramics, and a separator 8 (see FIG. 6) is provided between the cylindrical rollers 7. The separator 8 is made of synthetic resin, and arm portions 8 a (see FIGS. 7 to 9) for holding the cylindrical rollers 7 are provided on the left and right side surfaces of each separator 8.
The cylindrical roller 7 rolls on the rolling element raceway surfaces 5 and 6 when the slider 1 relatively moves in the longitudinal direction of the guide rail 2, and the end cap 4 is provided with the rolling element raceway surfaces 5 and 6. A direction change path 9 (see FIG. 6) for changing the direction of the rolled cylindrical roller 7 is formed.

スライダ本体３は案内レール２の両側にブロック状の袖部３ａ（図５参照）を有しており、各袖部３ａには二つの貫通孔１０が案内レール２の長手方向に沿って形成されている。これらの貫通孔１０には合成樹脂からなるスリーブ１１が挿入されており、円筒ころ７はスリーブ１１内に形成された断面矩形の転動体循環路１２（図１０参照）を通って循環するようになっている。
エンドキャップ４は合成樹脂にて成形されており、各エンドキャップ４の背面部には、スリーブ１１の端面に設けられた位置決め突起部１３（図１０参照）と嵌合する位置決め穴部（図示せず）が形成されている。 The slider body 3 has block-shaped sleeve portions 3a (see FIG. 5) on both sides of the guide rail 2, and two through holes 10 are formed in each sleeve portion 3a along the longitudinal direction of the guide rail 2. ing. A sleeve 11 made of synthetic resin is inserted into these through holes 10, and the cylindrical roller 7 circulates through a rolling element circulation path 12 (see FIG. 10) having a rectangular cross section formed in the sleeve 11. It has become.
The end caps 4 are formed of a synthetic resin, and positioning holes (not shown) are fitted on the backs of the end caps 4 to fit the positioning protrusions 13 (see FIG. 10) provided on the end surface of the sleeve 11. ) Is formed.

転動体循環路１２は、図１０に示すように、円筒ころ７が転走する二つの円筒ころ転走面１２ａを有しており、これらの円筒ころ転走面１２ａには潤滑油溜り溝１４がスリーブ１１の長手方向に沿って形成されている。また、転動体循環路１２は円筒ころ転走面１２ａに対して直角な二つの円筒ころ案内面１２ｂを有しており、これらの円筒ころ案内面１２ｂには、セパレータ８の腕部８ａと係合するセパレータ案内溝１５がスリーブ１１の長手方向に沿って形成されている。なお、エンドキャップ４の前面には、案内レール２とエンドキャップ４との間隙をシールするシール板１６（図４参照）が取り付けられている。   As shown in FIG. 10, the rolling element circulation path 12 has two cylindrical roller rolling surfaces 12a on which the cylindrical rollers 7 roll, and the cylindrical oil rolling grooves 14 are formed on these cylindrical roller rolling surfaces 12a. Is formed along the longitudinal direction of the sleeve 11. Further, the rolling element circulation path 12 has two cylindrical roller guide surfaces 12b perpendicular to the cylindrical roller rolling surface 12a. The cylindrical roller guide surfaces 12b are engaged with the arm portion 8a of the separator 8. A separator guide groove 15 to be joined is formed along the longitudinal direction of the sleeve 11. A seal plate 16 (see FIG. 4) for sealing the gap between the guide rail 2 and the end cap 4 is attached to the front surface of the end cap 4.

このような直動案内装置では、転動体循環路１２の円筒ころ転走面１２ａに潤滑油溜り溝１４が形成されていると共に転動体循環路１２の円筒ころ案内面１２ｂにセパレータ案内溝１５が形成されているため、スリーブ１１を樹脂成形するときに用いる成形型の構造が複雑な構造となり、コストの上昇等を招く可能性がある。そこで、かかる問題を解消するために、図１１に示すように、スリーブ１１を円筒ころ転走面１２ａの中央部で二つに分割したものが提案されている（特許文献１参照）。
特許第２８６５８５４号明細書 In such a linear guide device, the lubricating oil pool groove 14 is formed on the cylindrical roller rolling surface 12 a of the rolling element circulation path 12, and the separator guide groove 15 is formed on the cylindrical roller guide surface 12 b of the rolling element circulation path 12. Since it is formed, the structure of the molding die used when the sleeve 11 is resin-molded becomes a complicated structure, which may increase costs. Therefore, in order to solve such a problem, as shown in FIG. 11, a sleeve 11 divided into two at the center of a cylindrical roller rolling surface 12a has been proposed (see Patent Document 1).
Japanese Patent No. 2865854

しかしながら、上記文献１に記載の直動案内装置では、スライダ本体３の貫通孔１０にスリーブ１１を挿入し易くするために、貫通孔１０とスリーブ１１との嵌め合いを緩くすると、図１２に示すように、スリーブ１１を円筒ころ転走面１２ａの中央部で二分割する二つの分割面１７ａ，１７ｂがスリーブ１１の径方向に位置ずれを起こし易くなる。このため、方向転換路９と転動体循環路１２との境界部に段差が生じ、この段差に円筒ころ７が衝突することによって振動や騒音が発生したりするなどの問題があった。
本発明は、このような問題点に着目してなされたものであり、その目的はスリーブを円筒ころ転走面の中央部で二分割する二つの分割面がスリーブの径方向に位置ずれを起こすことによって生じる種々の弊害を防止することのできる直動案内装置を提供することである。 However, in the linear motion guide device described in the above-mentioned document 1, in order to make it easy to insert the sleeve 11 into the through hole 10 of the slider body 3, when the fitting between the through hole 10 and the sleeve 11 is loosened, it is shown in FIG. As described above, the two split surfaces 17a and 17b that bisect the sleeve 11 at the central portion of the cylindrical roller rolling surface 12a are likely to be displaced in the radial direction of the sleeve 11. For this reason, a step is generated at the boundary between the direction change path 9 and the rolling element circulation path 12, and there is a problem that vibration and noise are generated when the cylindrical roller 7 collides with the step.
The present invention has been made paying attention to such problems, and its purpose is to cause the two divided surfaces, which divide the sleeve into two at the center of the cylindrical roller rolling surface, are displaced in the radial direction of the sleeve. It is an object of the present invention to provide a linear motion guide device that can prevent various harmful effects caused by the above.

上記の目的を達成するために、本発明は、案内レールの長手方向に沿ってスライダ本体に形成された貫通孔に挿入され、かつ円筒ころを循環させるための転動体循環路を内部に有する合成樹脂製のスリーブを前記転動体循環路の円筒ころ転送面中央部で二つに分割した直動案内装置において、前記スリーブを前記転動体循環路の円筒ころ転送面中央部で二分割する二つの分割面のうち一方の分割面に突起部を設けるとともに、他方の分割面に前記突起部と嵌合する穴部を設けたことを特徴とする。
本発明に係る直動案内装置において、突起部および穴部はスリーブの軸方向に複数設けられていてもよい。また、突起部および穴部は分割面の中心に対して点対称に設けられていることが好ましい。さらに、突起部および穴部はスリーブの軸方向に沿う形状が長方形状もしく長円形状に形成されているものでもよい。 In order to achieve the above-mentioned object, the present invention is a composite having a rolling element circulation path inserted into a through-hole formed in the slider body along the longitudinal direction of the guide rail and circulating a cylindrical roller. In the linear motion guide device in which the resin sleeve is divided into two at the cylindrical roller transfer surface central part of the rolling element circulation path, the sleeve is divided into two at the cylindrical roller transfer surface central part of the rolling element circulation path. A protrusion is provided on one of the divided surfaces, and a hole that fits the protrusion is provided on the other divided surface.
In the linear motion guide device according to the present invention, a plurality of protrusions and holes may be provided in the axial direction of the sleeve. Moreover, it is preferable that the protrusion and the hole are provided point-symmetrically with respect to the center of the dividing surface. Furthermore, the protrusion and the hole may be formed in a rectangular or oval shape along the axial direction of the sleeve.

本発明に係る直動案内装置によれば、スリーブを転動体循環路の円筒ころ転送面中央部で二分割する二つの分割面のうち一方の分割面に突起部を設けるとともに、他方の分割面に前記突起部と嵌合する穴部を設けたことにより、スライダ本体に形成された貫通孔とスリーブとの嵌め合いが緩い場合でもスリーブを円筒ころ転走面の中央部で二分割する二つの分割面がスリーブの径方向に位置ずれを起こすことを抑制できるので、スリーブを円筒ころ転走面の中央部で二分割する二つの分割面がスリーブの径方向に位置ずれを起こすことによって生じる種々の弊害を防止することができる。   According to the linear motion guide device according to the present invention, one of the two divided surfaces that divides the sleeve into two at the central portion of the cylindrical roller transfer surface of the rolling element circulation path is provided with a protrusion, and the other divided surface. Provided with a hole to be fitted to the protrusion, so that the sleeve is divided into two parts at the center of the cylindrical roller rolling surface even when the through hole formed in the slider body and the sleeve are loosely fitted. Since it is possible to suppress the displacement of the split surface in the radial direction of the sleeve, the two split surfaces that divide the sleeve into two at the center of the cylindrical roller rolling surface cause various misalignments in the sleeve radial direction. Can be prevented.

以下、本発明の実施の形態を図面に基づいて説明する。なお、図４〜図１２に示したものと同一部分には同一符号を付し、その部分の詳細な説明は省略する。
図１および図２に、本発明の第１の実施形態を示す。図１に示すように、スリーブ１１は円筒ころ転走面１２ａの中央部で二つに分割されており、スリーブ１１を円筒ころ転走面１２ａの中央部で二つに分割する分割面１７ａ，１７ｂのうち分割面１７ａには、複数の突起部１８と穴部１９が設けられている。これらの突起部１８および穴部１９は、図２に示すように、スリーブ１１の軸方向に一定間隔で交互に且つ分割面１７ａの中心Ｏに対して点対称に設けられており、分割面１７ｂには、分割面１７ａに設けられた突起部１８および穴部１９とそれぞれ嵌合する穴部１９および突起部１８（図１及び図２参照）がスリーブ１１の軸方向に一定間隔で交互に且つ分割面１７ｂの中心Ｏに対して設けられている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same parts as those shown in FIGS. 4 to 12 are denoted by the same reference numerals, and detailed description thereof is omitted.
1 and 2 show a first embodiment of the present invention. As shown in FIG. 1, the sleeve 11 is divided into two at the central portion of the cylindrical roller rolling surface 12a, and the divided surface 17a, which divides the sleeve 11 into two at the central portion of the cylindrical roller rolling surface 12a, A plurality of protrusions 18 and holes 19 are provided on the dividing surface 17a of 17b. As shown in FIG. 2, these protrusions 18 and holes 19 are provided alternately at regular intervals in the axial direction of the sleeve 11 and symmetrically with respect to the center O of the dividing surface 17a. The hole portions 19 and the protrusion portions 18 (see FIGS. 1 and 2) that are fitted into the protrusion portions 18 and the hole portions 19 provided on the dividing surface 17a are alternately arranged at regular intervals in the axial direction of the sleeve 11. It is provided with respect to the center O of the dividing surface 17b.

なお、スリーブ１１の外周面には、スリーブ１１の成形後における曲がりを抑制するために、４つの肉盗み部２０がそれぞれ所定位置に設けられている。また、スリーブ１１の外周面には、スリーブ１１の成形後における曲がりを抑制するために、４つの肉盗み部２０（図１参照）がそれぞれ所定位置に設けられている。また、スリーブ１１の外周面には、４つの平面部２１（図１参照）がそれぞれ所定位置に設けられている。   In addition, on the outer peripheral surface of the sleeve 11, four meat stealing portions 20 are provided at predetermined positions in order to suppress bending after the sleeve 11 is molded. Further, four meat stealing portions 20 (see FIG. 1) are provided at predetermined positions on the outer peripheral surface of the sleeve 11 in order to suppress bending after the sleeve 11 is molded. Further, four planar portions 21 (see FIG. 1) are provided at predetermined positions on the outer peripheral surface of the sleeve 11, respectively.

このように構成される直動案内装置では、スリーブ１１を円筒ころ転走面１２ａの中央部で二つに分割する分割面１７ａ，１７ｂのうち一方の分割面に突起部１８を設けるとともに、他方の分割面に突起部１８と嵌合する穴部１９を設けたことにより、スライダ本体に形成された貫通孔とスリーブ１１との嵌め合いが緩い場合でも分割面１７ａ，１７ｂがスリーブ１１の径方向に位置ずれを起こすことを抑制できるので、スリーブ１１を円筒ころ転走面１２ａの中央部で二分割する二つの分割面１７ａ，１７ｂがスリーブ１１の径方向に位置ずれを起こすことによって生じる種々の弊害を防止することができる。   In the linear motion guide device configured as described above, the projection 11 is provided on one of the divided surfaces 17a and 17b that divides the sleeve 11 into two at the center of the cylindrical roller rolling surface 12a, and the other By providing the hole 19 that fits the projection 18 on the split surface, the split surfaces 17a and 17b are arranged in the radial direction of the sleeve 11 even when the through hole formed in the slider body and the sleeve 11 are loosely fitted. Therefore, the two split surfaces 17a and 17b that divide the sleeve 11 into two at the center portion of the cylindrical roller rolling surface 12a cause various positional shifts in the radial direction of the sleeve 11. It is possible to prevent harmful effects.

また、突起部１８および穴部１９をスリーブ１１の軸方向に複数設けたことにより、分割面１７ａと分割面１７ｂとの間に隙間が生じることを突起部１８と穴部１９との嵌合部に生じる摩擦力によって防止することができる。
また、上述した実施形態ではスリーブ１１を円筒ころ転走面１２ａの中央部で二分割する二つの分割面１７ａ，１７ｂがスリーブ１１の径方向に位置ずれを起こすことを抑制でき、分割面１７ａ，１７ｂの接合幅を小さくできることから、円筒ころのころ径を大きく取れるため、貫通孔を大きくしなくても剛性や負荷容量を高めることができる。すなわち、従来では、分割面１７ａ，１７ｂがずれることを前提にした場合、ずれても接合面が合う設計にすることから、接合幅が必要以上に大きくなってしまい、ころの通過する空間が抑制され、本来必要なころサイズよりも小さい設計になってしまうが、本実施形態では分割面１７ａ，１７ｂの接合幅を小さくできるため、円筒ころのころ径を大きく取ることができる。 In addition, since a plurality of protrusions 18 and holes 19 are provided in the axial direction of the sleeve 11, a gap is generated between the divided surface 17 a and the divided surface 17 b, and the fitting portion between the protrusion 18 and the hole 19. It can be prevented by the frictional force generated in
Moreover, in embodiment mentioned above, it can suppress that two split surfaces 17a and 17b which divide the sleeve 11 into two in the center part of the cylindrical roller rolling surface 12a raise | generate a position shift to the radial direction of the sleeve 11, and the split surfaces 17a, Since the joint width of 17b can be reduced, the roller diameter of the cylindrical roller can be increased, so that rigidity and load capacity can be increased without increasing the through hole. That is, conventionally, when it is assumed that the split surfaces 17a and 17b are displaced, the design is such that the joint surfaces match each other even if they are misaligned, so the joint width becomes larger than necessary and the space through which the rollers pass is suppressed. In this embodiment, the joining width of the split surfaces 17a and 17b can be reduced, so that the roller diameter of the cylindrical roller can be increased.

なお、本発明は上述した実施形態に限定されるものではない。たとえば、上述した実施形態ではスリーブ１１をエンジニアプラスチック、ＰＯＭ、ＰＡ６６等の合成樹脂で形成したが、ポレオレフィン樹脂をベースとした潤滑剤含有樹脂材でスリーブ１１を形成してもよい。この場合の含油の手法は潤滑剤をポレオレフィン樹脂に事前に混ぜての成形でもよいし、焼結状に成形した後で潤滑剤を含浸させてもよい。
また、上述した実施形態では複数の突起部１８と穴部１９をスリーブ１１の軸方向に複数設けたが、図３に示す第２の実施形態のように、スリーブ１１の軸方向に沿う形状が長方形状もしく長円形状に形成された突起部２２と穴部２３を分割面１７ａ，１７ｂに設けても同様の効果を得ることができる。 In addition, this invention is not limited to embodiment mentioned above. For example, in the above-described embodiment, the sleeve 11 is formed of a synthetic resin such as engineer plastic, POM, PA66, or the like, but the sleeve 11 may be formed of a lubricant-containing resin material based on a polyolefin resin. The oil impregnation method in this case may be a molding in which a lubricant is mixed with a polyolefin resin in advance, or may be impregnated with a lubricant after being molded into a sintered form.
In the above-described embodiment, a plurality of protrusions 18 and a plurality of holes 19 are provided in the axial direction of the sleeve 11. However, as in the second embodiment shown in FIG. The same effect can be obtained even if the projections 22 and the holes 23 formed in a rectangular or oval shape are provided on the dividing surfaces 17a and 17b.

本発明の第１の実施形態を示すスリーブの正面図である。It is a front view of the sleeve which shows the 1st Embodiment of this invention. スリーブを円筒ころ転走面の中央部で二分割する二つの分割面を示す図である。It is a figure which shows two division surfaces which divide a sleeve into two in the center part of a cylindrical roller rolling surface. 本発明の第２の実施形態を示す図である。It is a figure which shows the 2nd Embodiment of this invention. 直動案内装置の斜視図である。It is a perspective view of a linear motion guide device. 図４に示す直動案内装置の正面図である。It is a front view of the linear motion guide apparatus shown in FIG. 図５のVI−VI断面図である。It is VI-VI sectional drawing of FIG. 図６に示すセパレータの側面図である。It is a side view of the separator shown in FIG. 図７に示すセパレータの平面図である。It is a top view of the separator shown in FIG. 図８に示すセパレータの正面図である。It is a front view of the separator shown in FIG. 図４に示すスリーブの正面図である。It is a front view of the sleeve shown in FIG. 円筒ころ転走面の中央部で二分割されたスリーブの正面図である。It is a front view of the sleeve divided into two at the center part of the cylindrical roller rolling surface. スリーブを円筒ころ転走面の中央部で二分割する二つの分割面がスリーブの軸方向に位置ずれを起こした場合のスリーブの正面を示す図である。It is a figure which shows the front of a sleeve when the position of the two division | segmentation surfaces which divide a sleeve into two in the center part of a cylindrical roller rolling surface raise | generates position shift in the axial direction of a sleeve.

符号の説明Explanation of symbols

１ スライダ
２ 案内レール
３ スライダ本体
３ａ 袖部
４ エンドキャップ
５，６ 転動体軌道面
７ 円筒ころ
８ セパレータ
８ａ 腕部
９ 方向転換路
１０ 貫通孔
１１ スリーブ
１２ 転動体循環路
１２ａ 円筒ころ転走面
１２ｂ 円筒ころ案内面
１３ 位置決め突起部
１４ 油溜り溝
１５ セパレータ案内溝
１６ シール板
１７ａ，１７ｂ 分割面
１８，２２ 突起部
１９，２３ 穴部
２０ 肉盗み部
２１ 平面部 DESCRIPTION OF SYMBOLS 1 Slider 2 Guide rail 3 Slider main body 3a Sleeve part 4 End cap 5,6 Rolling body raceway surface 7 Cylindrical roller 8 Separator 8a Arm part 9 Direction change path 10 Through-hole 11 Sleeve 12 Rolling body circulation path 12a Cylindrical roller rolling surface 12b Cylindrical roller guide surface 13 Positioning projection 14 Oil sump groove 15 Separator guide groove 16 Seal plate 17a, 17b Dividing surface 18, 22 Projection 19, 23 Hole 20 Meat stealing part 21 Flat part

Claims (4)

案内レールの長手方向に沿ってスライダ本体に形成された貫通孔に挿入され、かつ円筒ころを循環させるための転動体循環路を内部に有する合成樹脂製のスリーブを前記転動体循環路の円筒ころ転送面中央部で二つに分割した直動案内装置において、
前記スリーブを前記転動体循環路の円筒ころ転送面中央部で二分割する二つの分割面のうち一方の分割面に突起部を設けるとともに、他方の分割面に前記突起部と嵌合する穴部を設けたことを特徴とする直動案内装置。 A synthetic resin sleeve inserted in a through-hole formed in the slider body along the longitudinal direction of the guide rail and having a rolling element circulation path for circulating the cylindrical roller is provided in the cylindrical roller of the rolling element circulation path. In the linear motion guide device divided into two at the center of the transfer surface,
The sleeve is provided with a protrusion on one of the two divided surfaces that bisects the cylindrical roller transfer surface of the rolling element circulation path, and a hole that fits the protrusion on the other divided surface A linear motion guide device characterized by comprising: 前記突起部および前記穴部は前記スリーブの軸方向に複数設けられていることを特徴とする請求項１記載の直動案内装置。   The linear motion guide device according to claim 1, wherein a plurality of the projecting portions and the hole portions are provided in an axial direction of the sleeve. 前記突起部および前記穴部は前記分割面の中心に対して点対称に設けられていることを特徴とする請求項１または２記載の直動案内装置。   The linear motion guide device according to claim 1, wherein the protrusion and the hole are provided point-symmetrically with respect to the center of the dividing surface. 前記突起部および前記穴部は前記スリーブの軸方向に沿う形状が長方形状もしく長円形状に形成されていることを特徴とする請求項１記載の直動案内装置。
2. The linear motion guide device according to claim 1, wherein the protrusion and the hole are formed in a rectangular or oval shape along the axial direction of the sleeve.
JP2004008239A 2004-01-15 2004-01-15 Linear guide device Pending JP2005201361A (en)

Priority Applications (1)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007092800A (en) * 2005-09-27 2007-04-12 Nippon Thompson Co Ltd Direct operated guide unit
JP2007278356A (en) * 2006-04-04 2007-10-25 Nsk Ltd Resin component and linear guide device using it, direct drive screw device, and rolling bearing device
DE102007056858A1 (en) * 2007-11-26 2009-05-28 Robert Bosch Gmbh Return pipe for guiding carriage of linear roller bearing, has identical half shells extending in longitudinal direction, and locking units arranged symmetric to assigned counter locking units with respect to assembly axis
JP2020070914A (en) * 2018-11-02 2020-05-07 日本トムソン株式会社 Linear motion guide unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007092800A (en) * 2005-09-27 2007-04-12 Nippon Thompson Co Ltd Direct operated guide unit
JP4505397B2 (en) * 2005-09-27 2010-07-21 日本トムソン株式会社 Linear motion guidance unit
JP2007278356A (en) * 2006-04-04 2007-10-25 Nsk Ltd Resin component and linear guide device using it, direct drive screw device, and rolling bearing device
JP4609366B2 (en) * 2006-04-04 2011-01-12 日本精工株式会社 Resin parts and linear guide device, linear motion screw device and rolling bearing device using the same
DE102007056858A1 (en) * 2007-11-26 2009-05-28 Robert Bosch Gmbh Return pipe for guiding carriage of linear roller bearing, has identical half shells extending in longitudinal direction, and locking units arranged symmetric to assigned counter locking units with respect to assembly axis
DE102007056858B4 (en) 2007-11-26 2022-12-01 Robert Bosch Gmbh Two-piece return tube for a linear roller bearing
JP2020070914A (en) * 2018-11-02 2020-05-07 日本トムソン株式会社 Linear motion guide unit
JP7260283B2 (en) 2018-11-02 2023-04-18 日本トムソン株式会社 Linear guide unit

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