WO2005108807A1 - 転がり機械要素 - Google Patents
転がり機械要素 Download PDFInfo
- Publication number
- WO2005108807A1 WO2005108807A1 PCT/JP2004/006383 JP2004006383W WO2005108807A1 WO 2005108807 A1 WO2005108807 A1 WO 2005108807A1 JP 2004006383 W JP2004006383 W JP 2004006383W WO 2005108807 A1 WO2005108807 A1 WO 2005108807A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crowning
- ball
- raceway surface
- rolling
- guide
- Prior art date
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
- 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
- F16C33/583—Details of specific parts of races
-
- 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
- F16C29/0604—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the load bearing section
-
- 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
-
- 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
-
- 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
- F16C29/0609—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the ends of the bearing body or carriage where the rolling elements change direction, e.g. end caps
-
- 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
- F16C29/063—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body, e.g. a carriage or part thereof, provided between the legs of a U-shaped guide rail or track
-
- 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
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
Definitions
- the present invention relates to rolling machine elements such as a ball guide, a roller guide, a ball spline, and a ball bush, and particularly relates to a guide block (in the case of a ball guide, a roller guide, etc.) and an outer cylinder (ball spline, a ball bush, etc.).
- a guide block in the case of a ball guide, a roller guide, etc.
- an outer cylinder ball spline, a ball bush, etc.
- an elliptical-based crowning is formed at the end of the raceway surface, so that a large amount of load acts on the rolling elements even at a portion close to the crowning end, so that the load capacity, rigidity and precision are dramatically improved. Increased rolling to ⁇ mechanical elements.
- a ball guide 1 is configured such that a guide block 2 is movable on a rail 3 in a direction of an arrow A or an arrow B.
- Many balls 4 as an example of a moving object are circulating and rolling in an aligned state, and balls 4 located within the range of the raceway surface length It contact the raceway surface 3a of the rail 3 and the raceway surface 2a of the guide block 2. By doing so, the external load acting on the guide block 2 is supported.
- roller guides, ball splines, ball bushes, and the like have a configuration in which rolling elements do not circulate, such as ball slides and cross roller guides, such as ball slides and cross roller guides. .
- the crowning 2b of the conventional crowning has a crowning length (a length from the starting point o of the crowning to the edge a of the crowning) Xr, a clearance e of the crowning e, and the orbit at the crowning starting point o. It was based on an arc 5 of radius R that touched the surface 2a. Note that the radius R is represented by Expression 1, and the arc 5 is represented by Expression 2.
- Non-Patent Document 1 Shigeo Shimizu: Study on Load Distribution, Accuracy and Rigidity of Linear Motion Ball Guide System, Journal of Precision Engineering, 58, 11 (1992)
- Non-Patent Document 2 Shigeo Shimizu: Dynamic Load Rating of Linear Bearings, Japanese Society of Tribology, 44, 11 (1999)
- Non-Patent Document 3 Shigeo Shimizu: Dynamic load capacity of linear motion rolling guide element, Kosaido Printing (1999) 2 Disclosure of the invention
- the present invention has been made in order to eliminate the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a first member having a raceway surface formed thereon, and the first member comprising a rolling element. And a second member mounted via the first member and configured to be able to guide the first member in a predetermined direction.
- a rolling machine element configured to be movable in the guiding direction
- an oval-based crowning is formed at the end of the raceway surface of the first member, which is a point at which the rolling element enters and exits, so that the crowning is within the range of the crowning.
- the purpose is to improve the load capacity, rigidity and accuracy of rolling machine elements by improving the load factor of the rolling elements located.
- Another object is to form a crowning based on an ellipse having a short axis of a predetermined crowning relief amount at an end of the raceway surface of the first member, which is a point of entry and exit of the rolling element, in the above configuration.
- the goal is to make it possible for rolling elements to smoothly enter and exit the raceway load zone while maintaining a high rolling factor load factor.
- Still another object is that, in the above-described configuration, an ellipse having a short axis of a predetermined crowning relief amount as a base at an end of the raceway surface of the first member, and a plurality of points on the ellipse as vertices.
- the present invention has a structure in which a first member having a raceway surface is formed, the first member is mounted via a rolling element, and the first member can be guided in a predetermined direction.
- the rolling element is configured such that the rolling element moves in and out of the raceway surface in an aligned state so that the first member can move in the guiding direction of the second member.
- an elliptical-based clutch is formed at an end of the raceway surface of the first member, which is a point of entry and exit of the rolling element.
- the present invention (claim 2) is configured such that a first member having a raceway surface formed thereon, the first member is mounted via a rolling element, and the first member can be guided in a predetermined direction.
- a rolling member wherein the rolling element moves in and out of the raceway surface in an aligned state, whereby the first member is configured to be movable in the guide direction of the second member.
- An elliptical-based crowning whose short axis is a predetermined crowning relief amount is formed at an end of the raceway surface of the first member, which is a point of entry and exit of the rolling element.
- the present invention (Claim 3) is configured such that a first member having a raceway surface is formed, the first member is mounted via a rolling element, and the first member can be guided in a predetermined direction.
- a rolling member wherein the rolling element moves in and out of the raceway surface in an aligned state so that the first member is movable in the guide direction of the second member.
- a polygonal crowning based on an ellipse whose minor axis is a predetermined crowning relief amount and having a plurality of points on the ellipse as vertices is provided. It is characterized by being formed.
- the present invention is configured such that the first member having the raceway surface formed as described above, and the first member is mounted via a rolling element so that the first member can be guided in a predetermined direction.
- the rolling element is configured to be able to move in the guide direction of the second member by the rolling element moving in and out of alignment with the raceway surface.
- An elliptical-based crowning is formed at the end of the raceway surface of the first member, which is the entrance and exit point, so that the load factor of the rolling elements located within the crowning can be improved, so that the rolling machine element This has the effect of increasing the load capacity, rigidity and accuracy of the device.
- the crowning based on the elliptical shape having the shortage of the predetermined crowning relief amount is formed at the end of the raceway surface of the first member, which is the entry / exit point of the rolling element.
- the end of the raceway surface of the first member may have a polygonal shape based on an ellipse having a predetermined crowning relief amount as a short axis and having a plurality of points on the ellipse as vertices. Since the crowning is formed, the processing of the crowning can be facilitated, and the effect of reducing the manufacturing cost of the rolling machine element with improved load capacity, rigidity and accuracy can be obtained.
- a rolling element S 10 includes a guide block 11 which is an example of a first member having a raceway surface 14 formed thereon, and a guide block 11 which is an example of a rolling element.
- the guide block 11 is configured such that it can move in the guide direction of the rail 12 by moving in and out in an aligned state, for example, a ball guide, and the end of the raceway surface 14 of the guide block 11 where the ball 13 enters and exits.
- a crowning 14a is formed based on an elliptical shape 15 having a minor axis of a predetermined crowning relief amount e.
- the crowning escape width Xr is a force that can be arbitrarily determined.
- the track is taken up to the center of the raceway surface 14, almost the entire range of the raceway surface length It is crowded. The rigidity and life are reduced, but the guide accuracy is significantly improved and the frictional resistance is considered to be significantly reduced.
- FIG. 1 An arc 16 with a radius R connecting to the crowning end a is shown.Comparing the crowning 14a and the arc 16 based on the ellipse 15, the positions of the crowning start point o and the crowning end a are common.
- the crawling 14a has a larger bulge in the direction of the y-axis origin, and this bulge improves the load factor of the ball 13.
- the rolling element S 20 includes a guide block 21 as an example of a first member having a raceway surface 24 formed thereon, and a guide block 21.
- a block 21 is attached via a ball 13 as an example of a rolling element, and includes a rail 22 as an example of a second member configured to be able to guide the guide block 21 in a predetermined direction.
- the guide block 21 is configured such that it can move in the guide direction of the rail 22 by moving in and out of the raceway surface 24 of the guide 21 in an aligned state, for example, a ball guide.
- the ellipse 15 on which the Klaujung 24 is based is the same as in the first embodiment of the present invention, and the vertices are not limited to the four points a, b, c, and o. You may.
- the rolling machine element 20 is, for example, a ball guide, as shown in FIG. 4, end plates 25 are attached to both ends of the guide block 11, and the balls 13 pass through the end plate 25. Thus, the ball 13 circulates and rolls in the guide block 11.
- the present invention is configured as described above, and its operation will be described below.
- the operation of the guide block 21 in the rolling machine element 20 according to the second embodiment of the present invention will be described.
- a ball 13 is interposed between the guide block 21 and the rail 22. Therefore, the guide block 21 can be freely moved with respect to the fixed rail 22 in the guide direction of the rail 22, that is, in the arrow C or arrow D direction. At this time, the ball 13 circulates in the guide block 21 in the direction of arrow G or arrow H.
- the ball load becomes exactly 0 at the end of the crown due to the radial load F lowering the guide block 11 by the clearance e of the claw jung, and the gap between the raceway surface 24 and the rail 22 at the end of the craw jung becomes equal to the ball diameter. Because.
- Table 1 shows a calculation example in the case of crown crown, arc parabolic crowning, and elliptical crowning in the ball guide.
- the first column in Table 1 is a ratio of the distance in the X-axis direction from the crowning start point ⁇ to the major axis (crowning width) Xr of the ellipse 15 in FIG. 1, and is a dimensionless quantity.
- the second and third columns show the case of arc crowning and parabolic crowning according to the prior art, and the fourth and fifth columns show the case of elliptical crowning according to the present invention.
- the second and fourth columns show the distance ⁇ ⁇ in the y-axis direction from the crowning starting point o, and the third and fifth columns show the ball load factor (1_ ⁇ ⁇ ⁇ ⁇ e). Since the arc and parabolic crowns are quadratic, the distance ⁇ matches within the range of significant figures and the load factor also matches, so they are described in the same column.
- the load factor is the ratio of the ball load when the ball is located in the crown jung section to the ball load when the ball is located on the orbital surface that is not the crown jung section. In a, since the ball load is 0, the load factor is also 0.
- (1) shows the case of arc crowning
- (2) shows the case of elliptical crowning. Yes.
- the lower diagram with the distance on the vertical axis shows the crowning shape as it is. It can be seen that the elliptical crowning has a bulge below the circular arc crowning by the hatched area.
- the abscissa indicates the conformity coefficient f
- the ordinate indicates the basic dynamic load rating C
- ⁇ e deformation amount when ball load Qc is applied
- raceway surface length It 72 mm
- ball diameter Dw 6.35 mm
- number of balls it 2 system IJ
- contact angle 45 °.
- a contact angle of 45 ° means that the ball and the raceway are in contact with each other at an angle of 45 ° with respect to the direction of the radial load.
- Table 2 shows a calculation example of the crowning when the rolling machine element 10 is a roller guide.
- (1) shows the case of an arc crowning
- (2) shows the case of an elliptical crowning.
- the lower diagram with the distance ⁇ ⁇ on the vertical axis shows the shape of Klaujung as it is. It can be seen that the elliptical crowning has a bulge below the circular arc Klaujung by the hatched area.
- the horizontal axis represents the roller effective length coefficient fL
- the vertical axis represents the basic dynamic load rating C
- the ball load Qc when a radial load of 1/2 of the basic dynamic load rating C is applied.
- Ball diameter Dw / crowning escape amount is shown.
- the forces described as the rolling machine elements 10 and 20 as ball guides are not limited thereto.
- rolling force S rolling machine elements such as roller guides, ball splines, and ball bushes may be used. You may.
- the guide direction by the rail or the shaft is not limited to the linear direction, and the rail may be curved like an R guide.
- the rolling element is not limited to a ball, and may be any type such as a cylindrical roller, a needle roller, a spherical roller, or a conical roller.
- the rolling elements are not limited to those that circulate in the guide block or the outer cylinder, but may be rotatably mounted on a rail-to-retainer or the like, such as a cross roller guide or a ball slide. .
- the crowning relief e is determined by the elastic deformation of the rolling elements in the contact angle direction. Just do it.
- FIG. 1 is a partial longitudinal sectional view showing a shape and an equation of an elliptical crowning in a rolling machine element according to a first embodiment of the present invention.
- FIG. 2 to FIG. 4 relate to a second embodiment of the present invention
- FIG. 2 is a partial longitudinal sectional view showing, in an enlarged manner, a crowning portion in a rolling element S.
- FIG. 4 is a partial longitudinal sectional view showing a state in which a ball moves on a rail while circulating and rolling in a guide block subjected to a radial load.
- FIG. 5 is a diagram showing calculation results of a crowning shape and a load factor in a ball guide.
- FIG. 3 is a graph showing the amount, ball deformation, maximum Hertzian stress, and the ratio between the ball diameter and the escape amount of Crowjung, respectively.
- FIG. 7 is a diagram showing calculation results of a crowning shape and a load factor in a roller guide.
- Garden 8 is a diagram showing the coefficient of conformity, the basic dynamic load rating, the ball load, the amount of crowning relief, the amount of ball deformation, the maximum Hertzian stress, and the ratio between the ball diameter and the amount of crown jungle relief in the roller guide.
- FIG. 9 to FIG. 12 relate to a conventional example, and FIG. 9 is a longitudinal sectional view of a ball guide.
- FIG. 10 is an enlarged partial longitudinal sectional view showing the shape and equation of arc crowning.
- FIG. 11 is a longitudinal cross-sectional view of a crowning formed by linearly chamfering a crowning starting point and a crowning end on a circular arc basis.
- Garden 12 is a longitudinal sectional view of a crown formed by connecting a plurality of arc-shaped points in order from the crowning start point to the end of the crown based on the arc and forming a polygonal shape.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/006383 WO2005108807A1 (ja) | 2004-05-12 | 2004-05-12 | 転がり機械要素 |
KR1020067025998A KR101072753B1 (ko) | 2004-05-12 | 2004-05-12 | 롤링 기계 요소 |
US11/569,032 US7645072B2 (en) | 2004-05-12 | 2004-05-12 | Rolling machine element |
DE112004002855T DE112004002855T5 (de) | 2004-05-12 | 2004-05-12 | Rollwerkselement |
CNB2004800435027A CN100494706C (zh) | 2004-05-12 | 2004-05-12 | 滚动机械单元 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2004/006383 WO2005108807A1 (ja) | 2004-05-12 | 2004-05-12 | 転がり機械要素 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005108807A1 true WO2005108807A1 (ja) | 2005-11-17 |
Family
ID=35320292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/006383 WO2005108807A1 (ja) | 2004-05-12 | 2004-05-12 | 転がり機械要素 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7645072B2 (ja) |
KR (1) | KR101072753B1 (ja) |
CN (1) | CN100494706C (ja) |
DE (1) | DE112004002855T5 (ja) |
WO (1) | WO2005108807A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7771119B2 (en) | 2006-11-27 | 2010-08-10 | Nsk Ltd. | Linear guide apparatus |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4565545B2 (ja) * | 2004-03-24 | 2010-10-20 | 日本トムソン株式会社 | 直動案内ユニット |
JP4842253B2 (ja) * | 2005-03-24 | 2011-12-21 | 日本スライド工業株式会社 | 薄型スライドユニット |
CN102278369B (zh) * | 2010-06-08 | 2016-02-17 | 新疆金风科技股份有限公司 | 重载滚动花键副 |
CN101975219A (zh) * | 2010-09-20 | 2011-02-16 | 南京工艺装备制造有限公司 | 调心滚柱导轨块 |
CN105570295A (zh) * | 2016-02-01 | 2016-05-11 | 嘉兴海菱达精密传动科技有限公司 | 一种滚动直线导轨副 |
JP6827843B2 (ja) * | 2017-02-23 | 2021-02-10 | 日本トムソン株式会社 | 直動案内ユニット |
KR20210094028A (ko) * | 2018-11-27 | 2021-07-28 | 티에치케이 가부시끼가이샤 | 운동 안내 장치 |
CN112431858A (zh) * | 2020-12-03 | 2021-03-02 | 山东博特精工股份有限公司 | 基于等功原理的滚柱直线导轨副滑块轨道导向面结构 |
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JPH08320019A (ja) * | 1995-05-25 | 1996-12-03 | Nippon Seiko Kk | 軽量型リニアガイド装置 |
JP2001271835A (ja) * | 2000-01-18 | 2001-10-05 | Thk Co Ltd | 転がり案内装置の軌道面長さおよび転動体径の選定方法、並びにこの選定方法を用いた転がり案内装置および転がり案内装置システム |
JP2004019728A (ja) * | 2002-06-13 | 2004-01-22 | Nsk Ltd | リニアガイド装置 |
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JP4284792B2 (ja) | 1999-11-11 | 2009-06-24 | 日本精工株式会社 | 玉軸受軌道面の超仕上加工方法 |
JP2001173718A (ja) | 1999-12-20 | 2001-06-26 | Thk Co Ltd | 免震用大荷重平面案内装置 |
JP4423851B2 (ja) * | 2002-02-28 | 2010-03-03 | 日本精工株式会社 | 直動案内装置の製造方法 |
-
2004
- 2004-05-12 DE DE112004002855T patent/DE112004002855T5/de not_active Ceased
- 2004-05-12 KR KR1020067025998A patent/KR101072753B1/ko active IP Right Grant
- 2004-05-12 WO PCT/JP2004/006383 patent/WO2005108807A1/ja active Application Filing
- 2004-05-12 US US11/569,032 patent/US7645072B2/en active Active
- 2004-05-12 CN CNB2004800435027A patent/CN100494706C/zh not_active Expired - Lifetime
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JPH01126421A (ja) * | 1987-11-10 | 1989-05-18 | Tsubakimoto Seiko:Kk | 直線運動用ベアリング及びそのベアリング本体の加工方法 |
JPH0343118U (ja) * | 1989-09-06 | 1991-04-23 | ||
JPH08200363A (ja) * | 1995-01-24 | 1996-08-06 | Nippon Seiko Kk | リニアガイド装置の潤滑構造 |
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JP2001271835A (ja) * | 2000-01-18 | 2001-10-05 | Thk Co Ltd | 転がり案内装置の軌道面長さおよび転動体径の選定方法、並びにこの選定方法を用いた転がり案内装置および転がり案内装置システム |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7771119B2 (en) | 2006-11-27 | 2010-08-10 | Nsk Ltd. | Linear guide apparatus |
Also Published As
Publication number | Publication date |
---|---|
KR20070007390A (ko) | 2007-01-15 |
CN100494706C (zh) | 2009-06-03 |
US7645072B2 (en) | 2010-01-12 |
CN101027499A (zh) | 2007-08-29 |
KR101072753B1 (ko) | 2011-10-11 |
US20070211969A1 (en) | 2007-09-13 |
DE112004002855T5 (de) | 2007-04-12 |
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