WO2005019668A1 - 直動案内装置 - Google Patents
直動案内装置 Download PDFInfo
- Publication number
- WO2005019668A1 WO2005019668A1 PCT/JP2004/012108 JP2004012108W WO2005019668A1 WO 2005019668 A1 WO2005019668 A1 WO 2005019668A1 JP 2004012108 W JP2004012108 W JP 2004012108W WO 2005019668 A1 WO2005019668 A1 WO 2005019668A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rolling element
- rolling
- crowning
- path
- slider
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
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
- F16C29/0633—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
-
- 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
- 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
Definitions
- the present invention relates to a linear guide device.
- Linear motion guide devices that linearly guide an object to be guided while infinitely circulating rolling elements such as rollers and balls inside are known as semiconductor manufacturing devices, ultra-precision processing machines, and ultra-precision measuring devices.
- the linear motion guide device includes a guide rail provided with a rail-side rolling element raceway groove, and a slider-side rolling element raceway groove opposed to the rail-side rolling element raceway groove.
- a slider body supported on a guide rail so as to be movable in the axial direction through the rolling of a plurality of rolling elements disposed in the rolling element rolling path formed between the raceway grooves.
- Device. This device is provided with a rolling element return path provided in the slider body so as to be substantially parallel to the rolling element rolling path, and an end of the rolling element return path which is attached to both ends of the slider body in the moving direction.
- An end cap formed with an outer peripheral side circulation groove of a semicircular rolling element circulation path that communicates with an end of the rolling element rolling path, and an end cap that is interposed between the end cap and the slider body.
- a return guide is formed by forming an inner circumferential side circulation groove of the rolling element circulation path at a position facing the side circulation groove.
- rolling element passing vibrations When the rolling elements of the linear motion guide device circulate indefinitely through the rolling element rolling path, the rolling element circulation path, and the rolling element return path, periodic minute vibrations (hereinafter referred to as rolling element passing vibrations). Occurs, which greatly affects the motion accuracy of the aforementioned devices.
- the rolling element passing vibration occurs when a rolling element rolling on a rolling element rolling path (load area) while receiving a load from a preload and an external load exits the load area into a rolling element circulation path (no-load area). This is caused by the release of the load on the vehicle, and conversely, by applying a new load when entering the load region from the no-load region.
- Patent Document 1 Japanese Patent Application Laid-Open No. 04-54310 (FIGS. 11 and 15)
- the linear motion guide device described above has a problem that the operability and the noise level are likely to deteriorate when a large load is applied to the slider body or a large mounting error occurs due to twisting or the like. is there.
- the present invention has been made in view of the above circumstances, and achieves improvement in noise characteristics by reducing running noise and smooth operation of the slider body, and improvement in motion braking by reducing rolling element passing vibration. It is an object of the present invention to provide a linear motion guide device capable of achieving the following.
- the deterioration of the noise characteristics and the operability of the linear motion guide device is correlated with the crowning amount of the crowning formed on both ends of the slider-side rolling element raceway groove of the slider body and the elastic deformation amount of the rolling element.
- the crowding amount is a relief amount of the slider-side rolling element raceway groove at a contact position in the contact angle direction between the rolling element and the slider-side rolling element raceway groove.
- the amount of crowning is reduced by minimizing the reduction in load capacity or based on the value of the preload amount. It is about 0.15% or less of the diameter of the moving body. If a large load is applied to the slider body or a large mounting error occurs due to prying, etc.
- the amount of elastic deformation of the rolling element on the end side of the rolling element raceway groove becomes greater than the crowning amount, and smooth rolling of the rolling element is hindered and noise increases.
- the noise is more remarkable when the gap between the rows of rolling elements is set to a small value or when the pitch between the rolling elements is fixed by interposing a holding piece between the rolling elements.
- a linear motion guide device provides a guide rail having a rail-side rolling element raceway groove provided on a side surface along an axial direction, and a slider side-rotation surface facing the rail-side rolling element raceway groove. It has a moving body raceway groove, and the rail side rolling body raceway groove and the slider side rolling body raceway groove A slider body supported by the guide rail so as to be movable in the axial direction through the rolling of a plurality of rolling elements disposed in the rolling element rolling path formed therebetween; and the rolling element rolling.
- a rolling element return path provided in the slider body so as to be substantially parallel to the path; and end portions of the rolling element return path, which are attached to both ends of the slider body in the moving direction, and the rolling element rolling path.
- An end cap forming an outer peripheral side circulation groove of a semicircular rolling element circulation path communicating with an end of the outer peripheral side circulation groove, the end cap being interposed between the end cap and the slider body;
- a linear guide having a return guide forming an inner circumferential circulation groove of the rolling element circulation path at a position facing the rolling element and a crowning provided at both ends of the slider-side rolling element raceway groove.
- the invention according to claim 2 has a guide rail having a rail-side rolling element raceway groove provided on a side surface along an axial direction, and a slider-side rolling element raceway groove facing the rail-side rolling element raceway groove. Then, a plurality of rolling elements disposed in rolling element rolling paths formed between the rail-side rolling element raceway grooves and the slider-side rolling element raceway grooves can be moved in the axial direction.
- An end cap forming an outer peripheral side circulation groove of a semicircular rolling element circulation path communicating with an end of the rolling element return path and an end of the rolling element rolling path; and Interposed between the slider body and the outer peripheral side A linear guide having a return guide forming an inner circumferential circulation groove of the rolling element circulation path at a position facing the annular groove, and a crowning provided at both ends of the slider-side rolling element raceway groove.
- the amount of the craw jug was set to a value of 1.5% or less of the diameter of the rolling element.
- the amount of the crown jung is 0.3% or more of the diameter of the rolling element.
- the crowning in the linear motion guide device according to the second or third aspect, has a curved surface shape having a predetermined radius of curvature, and the radius of curvature is the diameter of the rolling element. It was set to 70 times or more.
- the linear motion guide device according to any one of the first to fourth aspects wherein an end of the crowning and an inner periphery of the return guide continuous with the end are provided. A step eliminating portion is provided between the side circulation groove and the groove end.
- a boundary portion between the slider-side rolling element groove and the crowning is subjected to a honing force.
- FIG. 1 is a perspective view showing a linear motion guide device according to the present invention.
- FIG. 2 is a plan view showing a bearing block which is a component of the linear motion guide device.
- FIG. 3 is a view taken along line AA of FIG. 2, showing one embodiment according to the present invention.
- FIG. 4 is a graph of an experimental result obtained by measuring a change in a noise level and a change in a load capacity ratio by changing a crowning amount.
- FIG. 5 This is a graph of experimental results obtained by measuring the noise level by changing the radius of curvature of the crowning 24.
- FIG. 6 is a view showing another embodiment according to the present invention.
- Fig. 1 shows the appearance of the linear motion guide device.
- a portal-shaped slider 2 is movably mounted on a guide rail 1.
- a substantially 1/4 arc-shaped concave groove orbit groove 10 extending in the axial direction is formed.
- a rolling element raceway groove 10 formed of a concave groove having a substantially semicircular cross section extending in the axial direction is formed at an intermediate position between both side surfaces la of the guide rail 1.
- the slider 2 includes a bearing block 2A forming the main body of the slider 2, and a gate-shaped end cap 2B detachably attached to both ends in the axial direction thereof. Side seals 5 that seal the openings of the gaps between the guide rails 1 and the sliders 2 are respectively mounted on the portions (end surfaces of the end caps 2B).
- a rolling element raceway groove 11 having a substantially semicircular cross section facing the rolling element raceway groove 10 of the guide rail 1 is formed at a corner of the inner surface of both sleeves 6 of the bearing block 2A.
- a rolling element raceway groove 11 having a substantially semicircular cross section is formed in the center of the inner side surface of each of the sleeves 6 and faces the rolling element raceway groove 10 of the guide rail 1.
- rolling element rolling paths 14 are formed by the rolling element raceway grooves 10 of the guide rail 1 and the rolling element raceway grooves 11 of both sleeves 6 of the bearing block 2A.
- the moving body rolling path 14 extends in the axial direction.
- the slider 2 has a rolling element return path 13 formed of a circular through hole that penetrates in the axial direction in parallel with the rolling element rolling path 14 at the upper and lower portions of the thick portion of the sleeve 6 of the bearing block 2A. Have.
- FIG. 3 shows a first embodiment according to the present invention.
- the end cap 2B is, as shown in FIG.
- An arc-shaped outer peripheral side circulation groove 16 is provided.
- the member indicated by reference numeral 18 in FIG. 3 is a return guide interposed between the bearing block 2A and the end cap 2B, and the outer periphery of the return guide 18 faces the outer peripheral side circulation groove 16.
- An inner peripheral circulation groove 20 is provided at the position.
- the outer peripheral side circulation groove 16 and the inner peripheral side circulation groove 20 form a rolling element circulation path 22 that connects the rolling element rolling path 14 and the rolling element return path 13.
- Rolling element B is sent from the end point of rolling element rolling path 14 to the starting point of rolling element return path 13 or from the end point of rolling element returning path 13 to the starting point of rolling element rolling path 14. Has become.
- a crowning 24 having a predetermined curvature radius R and a curved surface is provided at an end of the eleventh portion.
- the dimensional force indicated by the symbol C of the crowning 24 is the crowning amount indicating the amount of relief of the rolling element raceway groove 11 at the contact position in the contact angle direction between the rolling element B and the rolling element raceway groove 11.
- the rolling element B shown by a solid line in the rolling element rolling path 14 is in a state of being elastically deformed by a preload / an external load.
- the maximum elastic deformation H is calculated by the following equation.
- the crowning amount C of the crowning 24 is set to a value larger than the maximum elastic deformation amount H of the rolling element B (C> H).
- the crowning 24 is provided at the end of the rolling element raceway groove 11, so that the rolling element rolling path 14 (load area) rolls while receiving a load due to a preload or an external load.
- the load is released when the rolling element B exits the rolling element circulation path 22 (no-load area) from the load area, or when a load is newly applied when the no-load area force enters the load area.
- the load change is performed gradually, it is possible to improve the motion braking by reducing the rolling element passing vibration, and it is possible to prevent a significant deterioration in noise level and operability.
- the linear motion guide device is sometimes used in a state in which loads and moments from various directions act in combination or there is an installation error.
- Run It is common practice to convert the combined load and mounting error into a radial load based on the running distance life (peeling life due to fatigue), and to set the allowable value in that case to 20% or less of the dynamic rated load.
- its value is generally 10% or less of the dynamic load rating.
- the amount of the craw jung provided on the slider body of the conventional linear motion guide device is 20 times the radial dynamic load rating. Since the value was smaller than the maximum elastic deformation of the rolling element when an external force of / o was applied, there was a possibility that the noise level and operability would deteriorate.
- the crowning amount C of the crowning 24 is set to a value larger than the maximum elastic deformation amount H of the rolling element B, so that the bearing block 2A has a large max.
- the amount of elastic deformation of the rolling element B rolling on the end side of the rolling element track groove 11 does not become larger than the crowning amount C. Since the rolling element B rolls smoothly, it is possible to significantly reduce the noise level and the operability.
- the radius of curvature R of the crowning 24 is set to 1000 mm, and the crowning amount C is set to 0.75% of the diameter D of the rolling element B.
- FIG. 4 shows that the OOlrad is incorrectly mounted on the bearing block 2A in the rolling direction.
- the noise level and the load capacity ratio were changed by changing the crowning amount C of the crowning 24 (the load capacity of the conventional device without the crowning was set to 1, and the crowning amount of the device of the present embodiment was compared to this conventional device.
- 7 is a graph of an experimental result obtained by measuring a load capacity ratio when the ratio is changed.
- the horizontal axis of the graph shown in FIG. 4 indicates the crowning amount C as a ratio (%) to the diameter D of the rolling element B.
- the noise level is 5 dB (A) or more, a significant difference in loudness can be confirmed even at human intervals.Therefore, as shown in Fig. 4, the noise level is less than 5 dB (A).
- the Crowjung amount C is 0.3 with respect to the rolling element diameter. / 0 or more is desirable.
- the load capacity decreases after a predetermined value, and the life of the linear guide device decreases. That is, when the crowding amount C is set to a value larger than 1.5%, the load capacity becomes less than 80% and the life of the linear motion guide device is sharply reduced. This is because if the crowning amount C is set to a value larger than 1.5%, the crown length L2 becomes longer, so that the effective length L3 of the rolling element raceway groove 11 cannot be sufficiently secured, and the load This is because the load capacity of the rolling element rolling path 14 is less than 80% of that of the conventional device, and the durability is greatly reduced to 1/2 or less. For this reason, considering the life of the linear motion guide device, reducing the crowning amount C to 1.5% or less minimizes the decrease in load capacity, and is 80% or more compared to conventional devices. Load capacity can be secured.
- Fig. 5 shows that a large mounting error (0.001 rad) is provided in the rolling direction on the bearing block 2A.
- the crowning amount C with respect to the diameter of the rolling element B is 0.75%
- the radius of curvature R of the crowning 24 is It is a graph of the experimental result which measured the noise level by changing
- FIG. 6 shows a third embodiment according to the present invention.
- a chamfered portion 26 extending in a plane is formed at the end of the crowning 24, and a slight recess is formed between the end and the groove end of the inner peripheral side circulation groove 20 of the continuous return guide 18. Is provided.
- the length of the chamfered portion 26 is set to be equal to or less than the diameter of the rolling element B.
- the boundary 28 between the rolling element raceway groove 11 and the crowning 24 is subjected to a Houng processing.
- chamfered portion 26 is not limited to the above-described chamfered portion 26 and may be a curvedly extending chamfered portion.
- a crowning of a different shape may be formed at the end of the crowning 24, or a portion to be processed simultaneously with the return guide 18 may be provided.
- the crowning 24 shown in the first to third embodiments has a curved surface shape with a predetermined radius of curvature R, the same effect can be obtained even with a crowning extending in a plane. S can.
- FIG. 1 and 2 show a structure in which two rolling element rolling paths 14 are formed between both sides of the guide rail 1 and both sleeves 6 of the bearing block 2A, respectively. Even if the rolling element rolling path 14 is formed for each part, the same function and effect can be obtained.
- the crowning amount C in the above embodiment is determined by the contact angle between the rolling element B and the rolling element raceway groove 11.
- the amount of clearance of the rolling element raceway groove 11 at the contact position in the direction is the amount of clearance of the rolling element raceway groove 11.
- the same effect can be obtained by converting the amount of change in the groove bottom of the groove 11 and managing the value.
- the crowning that is larger than the maximum elastic deformation amount of the rolling element is provided at the end of the slider-side rolling element raceway groove.
- load area When a rolling element rolling on a rolling element rolling path (load area) exits the rolling element circulation path (no load area), the load is released, or conversely, enters the load area from the no-load area.
- no load area When a new load is applied, the load fluctuates gradually, so that it is possible to improve the dynamic braking by reducing the rolling element passing vibration, and to prevent significant noise level deterioration and operability deterioration. can do.
- the present invention is applicable to a linear guide device that linearly guides an unintended object in a semiconductor manufacturing apparatus, an ultra-precision processing machine, an ultra-precision measuring instrument, or the like.
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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 (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/555,582 US7401978B2 (en) | 2003-08-25 | 2004-08-24 | Linear motion guiding apparatus |
| JP2005513332A JPWO2005019668A1 (ja) | 2003-08-25 | 2004-08-24 | 直動案内装置 |
| DE112004001048.9T DE112004001048B4 (de) | 2003-08-25 | 2004-08-24 | Linearbewegungsführungsvorrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003300235 | 2003-08-25 | ||
| JP2003-300235 | 2003-08-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005019668A1 true WO2005019668A1 (ja) | 2005-03-03 |
Family
ID=34213814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/012108 Ceased WO2005019668A1 (ja) | 2003-08-25 | 2004-08-24 | 直動案内装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US7401978B2 (ja) |
| JP (1) | JPWO2005019668A1 (ja) |
| DE (1) | DE112004001048B4 (ja) |
| WO (1) | WO2005019668A1 (ja) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1925834A2 (en) | 2006-11-27 | 2008-05-28 | NSK Ltd. | Linear guide apparatus |
| JP2008281096A (ja) * | 2007-05-10 | 2008-11-20 | Nsk Ltd | リニアガイド装置 |
| US7677804B2 (en) * | 2004-03-24 | 2010-03-16 | Nippon Thompson Co., Ltd. | Linear motion guide unit |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7628090B2 (en) * | 2006-03-27 | 2009-12-08 | Hiwin Technologies Corp. | Circulation passage structure for a ball screw |
| DE102007030004A1 (de) * | 2007-06-28 | 2009-01-02 | Schaeffler Kg | Linearlager mit umlaufenden Wälzkörpern und Umlenker für ein solches Linearlager |
| US20090323256A1 (en) | 2008-06-25 | 2009-12-31 | Errera Michael R | Interface for system for generating electric power |
| WO2014042089A1 (ja) * | 2012-09-13 | 2014-03-20 | Thk株式会社 | 案内体及びこれを備えた運動案内装置 |
| CN105626686A (zh) * | 2016-02-01 | 2016-06-01 | 嘉兴海菱达精密传动科技有限公司 | 一种能实现高平稳运行的滑块 |
| CN105570297A (zh) * | 2016-02-01 | 2016-05-11 | 嘉兴海菱达精密传动科技有限公司 | 一种滑块 |
| 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 |
| CN105587768A (zh) * | 2016-02-01 | 2016-05-18 | 嘉兴海菱达精密传动科技有限公司 | 一种高平稳性的直线导轨副 |
| CN105570296A (zh) * | 2016-02-01 | 2016-05-11 | 嘉兴海菱达精密传动科技有限公司 | 一种改进型滚动直线导轨副 |
| CN115451015B (zh) * | 2022-08-16 | 2023-12-19 | 鸿富锦精密工业(衡阳)有限公司 | 直线导轨 |
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| JPS63293319A (ja) * | 1987-05-25 | 1988-11-30 | Hiroshi Teramachi | 直線及び曲線兼用ベアリング |
| JPH0650333A (ja) * | 1992-07-30 | 1994-02-22 | Nippon Seiko Kk | リニアガイド装置 |
| JPH109262A (ja) * | 1996-06-20 | 1998-01-13 | Sigma Koki Kk | 直線運動ステージの鋼球ガイド溝加工方法およびその装置 |
| JP2001193739A (ja) * | 2000-01-13 | 2001-07-17 | Nsk Ltd | 直動案内軸受装置 |
| JP2002089557A (ja) * | 2000-07-13 | 2002-03-27 | Nsk Ltd | リニアガイド |
| JP2003194057A (ja) * | 2001-12-25 | 2003-07-09 | Nippon Thompson Co Ltd | 転動体間にセパレータを備えた直動案内ユニット |
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| JPH0646050B2 (ja) * | 1990-06-22 | 1994-06-15 | テイエチケー株式会社 | 直線摺動用ベアリング及び直線摺動用テーブル |
| DE4210299C2 (de) * | 1992-03-28 | 1995-09-28 | Schaeffler Waelzlager Kg | Wälzlager für eine geradlinige Bewegung |
| JP3950511B2 (ja) * | 1997-04-04 | 2007-08-01 | 日本トムソン株式会社 | 直動転がり案内ユニット |
| JP4070265B2 (ja) * | 1997-07-01 | 2008-04-02 | Thk株式会社 | 直線案内装置 |
| JP2001182745A (ja) * | 1999-12-27 | 2001-07-06 | Nsk Ltd | 直動案内軸受 |
| US6520680B2 (en) | 2000-07-13 | 2003-02-18 | Nsk Ltd. | Linear guide |
| JP3420204B2 (ja) * | 2000-11-17 | 2003-06-23 | Thk株式会社 | 案内装置 |
| US6517245B2 (en) * | 2001-05-04 | 2003-02-11 | Hiwin Technologies Corp | Adjustable end cup for linear guide way structure |
-
2004
- 2004-08-24 WO PCT/JP2004/012108 patent/WO2005019668A1/ja not_active Ceased
- 2004-08-24 US US10/555,582 patent/US7401978B2/en not_active Expired - Lifetime
- 2004-08-24 DE DE112004001048.9T patent/DE112004001048B4/de not_active Expired - Fee Related
- 2004-08-24 JP JP2005513332A patent/JPWO2005019668A1/ja active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63293319A (ja) * | 1987-05-25 | 1988-11-30 | Hiroshi Teramachi | 直線及び曲線兼用ベアリング |
| JPH0650333A (ja) * | 1992-07-30 | 1994-02-22 | Nippon Seiko Kk | リニアガイド装置 |
| JPH109262A (ja) * | 1996-06-20 | 1998-01-13 | Sigma Koki Kk | 直線運動ステージの鋼球ガイド溝加工方法およびその装置 |
| JP2001193739A (ja) * | 2000-01-13 | 2001-07-17 | Nsk Ltd | 直動案内軸受装置 |
| JP2002089557A (ja) * | 2000-07-13 | 2002-03-27 | Nsk Ltd | リニアガイド |
| JP2003194057A (ja) * | 2001-12-25 | 2003-07-09 | Nippon Thompson Co Ltd | 転動体間にセパレータを備えた直動案内ユニット |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7677804B2 (en) * | 2004-03-24 | 2010-03-16 | Nippon Thompson Co., Ltd. | Linear motion guide unit |
| EP1925834A2 (en) | 2006-11-27 | 2008-05-28 | NSK Ltd. | Linear guide apparatus |
| US7771119B2 (en) | 2006-11-27 | 2010-08-10 | Nsk Ltd. | Linear guide apparatus |
| JP2008281096A (ja) * | 2007-05-10 | 2008-11-20 | Nsk Ltd | リニアガイド装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2005019668A1 (ja) | 2006-10-19 |
| DE112004001048B4 (de) | 2014-08-28 |
| DE112004001048T5 (de) | 2006-04-27 |
| US20070003172A1 (en) | 2007-01-04 |
| US7401978B2 (en) | 2008-07-22 |
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