WO2008050378A1 - Engrenage et module d'entraînement d'engrenage - Google Patents
Engrenage et module d'entraînement d'engrenage Download PDFInfo
- Publication number
- WO2008050378A1 WO2008050378A1 PCT/JP2006/321011 JP2006321011W WO2008050378A1 WO 2008050378 A1 WO2008050378 A1 WO 2008050378A1 JP 2006321011 W JP2006321011 W JP 2006321011W WO 2008050378 A1 WO2008050378 A1 WO 2008050378A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gear
- range
- nitrogen
- tooth
- oil film
- Prior art date
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 58
- 229910052757 nitrogen Inorganic materials 0.000 claims description 29
- 229910001566 austenite Inorganic materials 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 16
- 230000003746 surface roughness Effects 0.000 claims description 12
- 238000007373 indentation Methods 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 8
- 238000005461 lubrication Methods 0.000 abstract description 11
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 30
- 239000003921 oil Substances 0.000 description 25
- 238000005096 rolling process Methods 0.000 description 14
- 230000005540 biological transmission Effects 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 238000009826 distribution Methods 0.000 description 10
- 238000007689 inspection Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000011109 contamination Methods 0.000 description 4
- 238000005121 nitriding Methods 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 241000920340 Pion Species 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000005256 carbonitriding Methods 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001422033 Thestylus Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004453 electron probe microanalysis Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
-
- 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
- F16C33/34—Rollers; Needles
-
- 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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
-
- 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
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
-
- 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
- F16C2240/00—Specified values or numerical ranges of parameters; Relations between them
- F16C2240/40—Linear dimensions, e.g. length, radius, thickness, gap
- F16C2240/54—Surface roughness
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0406—Absorption elements for lubricants, e.g. oil felts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/1987—Rotary bodies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/19—Gearing
- Y10T74/19949—Teeth
Definitions
- the present invention relates to a gear and a gear driving device, and can be applied to, for example, a gear and a gear driving device used in a power transmission unit or a gear pump of an automobile transmission.
- Patent Document 1 discloses a gear having a tooth surface provided with an infinite number of minute dents.
- the average area of these micro-indentations is 35 to 150 111 2
- the ratio of the micro-indentations to the surface is 10 to 40%
- the average surface roughness with micro-indentations is RmaxO. 6 to 2.5 ⁇ m.
- the parameter Sk of the surface roughness of the tooth surface with a small dent is set so that Sk ⁇ —1.6. This improves the ability to form an oil film on the surface and sufficiently forms an oil film between the tooth surfaces of the gear, thereby preventing damage caused by poor lubrication such as peeling from the surface of the gear and improving durability. ing.
- Patent Document 1 Japanese Utility Model Publication No. 4 56254
- An object of the present invention is to sufficiently form an oil film between the tooth surfaces of a gear rotating at high speed, to prevent occurrence of pitching, abrasion and scoring, and to improve durability by preventing temperature rise and wear. It is an object of the present invention to provide a gear and a gear driving device using such a gear.
- the gear of the present invention is provided with an infinite number of minute concave recesses in the tooth surface, and the average area of the recesses is in the range of 160 to 740 ⁇ m 2. It is characterized by being.
- Rqni is within the range of 0.13 ⁇ m ⁇ Rqni ⁇ 0.5 ⁇ m.
- the parameter Rqni is the square root of the roughness center line force, the square root of the height deviation up to the roughness curve, integrated over the measured length interval, and averaged over that interval, also known as the root mean square roughness.
- Rqni is obtained by numerical calculation of the cross-sectional curve and roughness curve force recorded on an enlarged scale, and is measured by moving the stylus of the roughness meter in the width and circumferential directions.
- a nitrogen-enriched layer can be formed on the surface of the gear.
- the nitrogen-enriched layer is a layer having an increased nitrogen content formed on the tooth surface, and can be formed by a process such as carbonitriding, nitriding, or nitriding.
- the nitrogen-rich layer After forming the nitrogen-rich layer, the nitrogen-rich layer
- the fatigue life can be greatly improved by the finer austenite grain size as the grain size number of the austenite grains in the stratified layer exceeds 10. If the austenite grain size number is 10 or less, the fatigue life is not greatly improved. Therefore, the range exceeds 10 and is usually 11 or more. The finer the austenite grain size, the better, but usually it is difficult to obtain a grain size number exceeding 13.
- austenite grains appear when heated to a temperature above the transformation point during heat treatment, and when transformed, they transform to a different structure, but after transformation, traces of austenite grain boundaries remain, and the traces remain. It refers to a crystal grain based on
- the nitrogen content in the nitrogen-enriched layer is preferably in the range of 0.1% to 0.7%. On the other hand, if the nitrogen content is less than 0.1%, the effect cannot be obtained, and the fatigue life is reduced particularly under the condition of contamination. If the nitrogen content is more than 0.7%, voids called voids will be formed, or the retained austenite will increase so much that the hardness will not be achieved, resulting in a short life.
- the nitrogen content is the value at the surface layer of 50 m of the tooth surface, and can be measured by, for example, EPMA (wavelength dispersive X-ray microanalyzer).
- the tooth surface becomes a minute rough surface and an oil film can be easily formed. Since the indentation becomes an oil reservoir, the oil film on the sliding surface can be formed reliably. As a result, the temperature rise can be reduced and the metal contact between the tooth surfaces of the meshing gears can be relaxed. Pitting, abrasion, and scoring can be achieved even in the high-speed rotation region. Can be prevented. Therefore, even if the oil film thickness is extremely thin under low viscosity and dilute lubrication, a long life of the gear and the gear driving device can be obtained. Furthermore, by improving the fatigue life of the surface layer of the toothed wheel, it is possible to obtain excellent cracking resistance and aging resistance.
- Fig. 1 shows an example of a transmission used in an automobile.
- Put shaft 2 and drive pion 3 and output shaft 4 are arranged in series, and counter shaft 5 and reverse shaft 6 are arranged in parallel to output shaft 4, and the above drive pion 3 and each shaft 2, 4, 5 7 groups of gears are attached to the gears, and by changing the meshing of each group of gears 7 operated from the outside of the case 1, the insertion of the input shaft 2 can be removed from the output shaft 4 by shifting or reversing it.
- the transmission includes a gear driving device having a driving gear driven by a driving force and a driven gear driven by meshing with the driving gear.
- FIG. 2 shows a gear 7 constituting a part of the gear driving device.
- the tooth surface 7a of this gear is a minute rough surface in which countless independent minute depressions are randomly formed.
- This fine rough surface has an indentation average area in the range of 160 to 740 / ⁇ ⁇ 2 .
- the surface roughness parameter Rymax in the axial direction of the indented surface is 1.3 ⁇ Rymax ⁇ 3.O / zm, and the surface roughness parameter Rqni in the axial direction of this surface is 0.13 ⁇ m ⁇ Rqni ⁇ 0.5 m.
- the surface cleaning treatment for obtaining such a fine rough surface is not limited to the force that can obtain a desired finished surface by special barrel polishing, and for example, shots or the like can be used.
- the surface layer of the tooth surface 7a of the gear 7 is formed with a nitrogen-enriched layer by a treatment such as carbonitriding, nitriding, or nitriding, and the grain size number of the austenite crystal grains in the nitrogen-enriched layer is 10 It is set to a range exceeding the number, for example, number 12.
- the nitrogen content in the surface layer 50 m of the tooth surface 4a is set in the range of 0.1 to 0.7%.
- FIG. 3 is a view showing the microstructure of the tooth surface of the gear, particularly austenite grains.
- Fig. 3 (A) shows a gear having an austenite grain size of JIS standard grain number 12 (invention example), and
- Fig. 3 (B) shows a gear having a grain size number 10 (comparative example).
- FIGS. 4 (A) and 4 (B) show the austenite grain sizes illustrated in FIGS. 3 (A) and 3 (B).
- the average particle size in Fig. 3 (A) was 5.6 m as a result of measurement by the intercept method.
- the gear of the gear driving device of the present invention has no minute concave recess at random.
- the tooth surface becomes a minute rough surface and an oil film is easily formed.
- this dent becomes an oil reservoir, an oil film can be reliably formed on the sliding surface. Therefore, the metal contact between the tooth surfaces 7a of the meshing gear 7 can be alleviated, and the temperature rise can be reduced. In addition, the occurrence of pitching, abrasion, and scoring can be prevented even in the high-speed rotation region. Life can be extended.
- the surface layer of this gear has a nitrogen-enriched layer, and the austenite grain size number in the nitrogen-enriched layer exceeds 10, the austenite grain size becomes finer and the fatigue life is greatly improved. can do.
- the nitrogen content in the nitrogen-enriched layer is less than 0.1%, the fatigue life under the contamination condition decreases, and conversely if more than 0.7%, voids called voids are formed.
- the amount of retained austenite increases too much and the hardness is not obtained, resulting in a short life. For this reason, it is possible to extend the life of the gear by setting the nitrogen content within the range of 0.1% to 0.7%.
- the gear of the present invention can obtain a long life even under conditions of low viscosity and dilute lubrication and an extremely thin oil film thickness, and the gear drive of the present invention using such a gear.
- the device can have a long life. Furthermore, by improving the fatigue life of the surface layer, it is possible to obtain excellent crack strength and aging resistance.
- the gear of the present invention is excellent in pitching resistance, abrasion resistance, and scoring resistance, and is therefore optimal as a gear 7 for an automobile transmission as shown in FIG.
- two to three sets of planetary gear mechanisms are normally used for automatic transmissions (AT) for automobiles, and the reduction ratio varies by fastening the sun gear, carrier, and ring gear of these planetary gear mechanisms with a clutch. It has become. This is why It is preferable to apply the surface properties of the present invention to the sun gear, planetary pinion, ring gear, and the like in such a planetary gear mechanism.
- gear of the present invention can of course be used in various gear drive devices other than the automobile transmission.
- the life of the gear was evaluated.
- the tooth surface of the gear makes rolling contact and sliding contact with the tooth surface of the other side, and the contact is in a form according to the contact state between the race of the rolling bearing and the raceway. Therefore, it is considered that the life evaluation of gears can be evaluated by the life test evaluation of rolling bearings.
- the present inventors conducted a life test of the rolling bearing under the conditions described below. When measuring the surface properties represented by these parameters for components such as rolling elements and rolling rings of rolling bearings, even one measured value can be relied on as a representative value. It is good to decide.
- the measurement methods and conditions of the parameters Ryni, Rymax, Sk, and Rqni measured in this example are as follows.
- the parameter Ryni is the average value of the maximum height for each reference length, that is, the reference length is extracted from the roughness curve in the direction of the average line, and the distance between the peak line and the valley bottom line of this extracted part. Is a value measured in the direction of the vertical magnification of the roughness curve (ISO 428 7: 1997).
- the norm Sk indicates the degree of distortion (skewness) of the roughness curve (ISO 428 7: 1997), and is a standard statistic to know the asymmetry of the uneven distribution. In a symmetric distribution such as a Gaussian distribution, the Sk value is close to 0. When the convex and concave portions are deleted, the Sk value is negative, and in the opposite case, the Sk value is positive.
- Cut-off wavelength 0.25mm Measurement magnification: X 10000
- Measuring device Surface roughness measuring instrument Surfcom 1400A (Tokyo Seimitsu Co., Ltd.)
- the roller surface is enlarged, and the image force can be quantitatively measured by a commercially available image analysis system.
- a surface texture inspection method and a surface texture inspection apparatus are used, stable and accurate measurement can be performed. In this method, light is irradiated onto an inspection surface having a curvature, the inspection surface is photographed with a camera, the brightness of the image of the inspection surface photographed with this camera is measured, and the bright portion of the measured brightness is measured.
- a surface texture inspection method that inspects the surface texture of the surface to be inspected using a light-dark pattern formed with the contrast of the dark area.
- the brightness distribution of the image to be measured is obtained by irradiating light in the direction of the optical axis of the camera.
- shading luminance distribution
- light is irradiated in the direction of the optical axis of the camera, and the brightness distribution of the measured image is the origin of the portion of the inspection surface corresponding to the position where this brightness distribution shows the peak value, and the symmetry axis of curvature. Approximate the one-dimensional luminance distribution along each orthogonal coordinate axis with an approximate function, and remove the luminance distribution of the image using these approximate functions.
- the luminance of the measured image corresponding to each coordinate position is corrected, and the surface properties of the inspection surface are inspected with this corrected luminance pattern, thereby reducing shading.
- Surface texture can be inspected with no light / dark pattern.
- a single measured value can be relied on as a representative value. It is good to measure two places that face each other in the diameter direction.
- the measurement conditions are as follows, for example.
- FIG. 5 shows an example of a test rolling bearing.
- This rolling bearing 10 is a needle roller bearing in which a needle roller 12 is incorporated in an outer ring 13 as a rolling element. It has come to support.
- the following describes the results of a life test conducted on a variety of needle roller bearings with different surface finishes on the needle roller surface.
- bearing A (comparative example) with super-finish after grinding
- bearing B (comparative example) with numerous indentations of small concave shapes randomly formed
- bearing C (example)
- bearing D (example)
- bearing E (Example).
- the test apparatus used is a radial load tester 16 as schematically shown in FIG. 7, in which test bearings 10 are mounted on both sides of the rotary shaft 17, and the test is performed by applying rotation and load.
- the finish of the inner race (partner shaft) used in the test is RaO. 10 to 0.16 / z m of polished finish.
- the water race (outer ring) is also common.
- the test conditions are as follows.
- Fig. 8 shows a list of characteristic values of the surface finish of each test bearing and the oil film parameter ⁇ .
- the life ratio of each test bearing to the bearing A with no depression is 1.6 times for bearing B, 2.0 times for bearing C, 3.8 times for bearing D, and 4 for bearing E. It was 0 times.
- the gear according to the present invention can obtain a long and long life effect.
- Testing machine Spur gear fatigue testing machine
- Drive-side gear Outer diameter 79 mm, Inner diameter 35 mm, Tooth width 8.2 mm, SCr420 (Carburizing), 29 teeth
- Tonolek 186N'm (19kgf'm)
- Lubricating oil temperature 80 ° C
- Lubricating oil ATF oil
- FIG. 10 (a) shows the result (comparative example) when surface treatment is applied to both the drive side and driven side gears
- Fig. 10 (b) shows the drive side gear
- FIG. 10 (c) shows the results (Example) when the tooth surface is treated so that the surface properties according to the present invention are satisfied.
- FIG. 10 (c) shows the teeth of the drive side gear and the driven side gear.
- the results (Examples) in the case of using the surface treated so as to satisfy the surface properties according to the present invention are shown on the surface. From these, it can be confirmed that the pitching life is improved more than 2 times in the case of Fig. 10 (b) and more than 3 times in the case of Fig. 10 (c) compared to the case of Fig. 10 (a). .
- Figure 11 shows the results of a test of the relationship with the life of the test piece under the input conditions.
- needle and roller bearings shown in Figs. 5 and 6 were used for the product and comparative product, and an infinite number of minute concave recesses as shown in the example of Fig. 8 were randomly formed on the roller surface. It is.
- the crystal grain size is measured based on the JIS G 0551 steel austenite grain size test method. The test conditions are as follows.
- the nitrogen content and the foreign material life are in a substantially proportional relationship.
- the comparative product 3 with a nitrogen content of 0.72 should have an upper limit of 0.7 for the nitrogen content in light of the extremely reduced lifespan of contamination.
- the lower limit of the nitrogen content should be 0.1.
- the austenite grain size is preferably a value exceeding 10.
- FIG. 1 Partial cross-sectional view of an automobile transmission
- FIG. 3 is a diagram showing the microstructure of gears, particularly austenite grains, where (A) is a gear according to an example of the present invention, and (B) is a conventional gear.
- FIG. 4 (A) shows the austenite grain boundary illustrated in FIG. 3 (A), and (B) shows the austenite grain boundary illustrated in FIG. 3 (B).
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Gears, Cams (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/321011 WO2008050378A1 (fr) | 2006-10-23 | 2006-10-23 | Engrenage et module d'entraînement d'engrenage |
US12/445,485 US8136420B2 (en) | 2006-10-23 | 2006-10-23 | Gear and gear drive unit |
JP2008540800A JPWO2008050378A1 (ja) | 2006-10-23 | 2006-10-23 | 歯車および歯車駆動装置 |
CN2006800559052A CN101512191B (zh) | 2006-10-23 | 2006-10-23 | 齿轮以及齿轮驱动装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2006/321011 WO2008050378A1 (fr) | 2006-10-23 | 2006-10-23 | Engrenage et module d'entraînement d'engrenage |
Publications (1)
Publication Number | Publication Date |
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WO2008050378A1 true WO2008050378A1 (fr) | 2008-05-02 |
Family
ID=39324193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2006/321011 WO2008050378A1 (fr) | 2006-10-23 | 2006-10-23 | Engrenage et module d'entraînement d'engrenage |
Country Status (4)
Country | Link |
---|---|
US (1) | US8136420B2 (ja) |
JP (1) | JPWO2008050378A1 (ja) |
CN (1) | CN101512191B (ja) |
WO (1) | WO2008050378A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010038438A1 (de) * | 2010-07-27 | 2012-02-02 | Bayerische Motoren Werke Aktiengesellschaft | Zahnrad und Verfahren zur Herstellung eines Zahnrads |
EP3181924B1 (en) * | 2015-12-18 | 2020-01-22 | Webasto SE | Drive cable and drive unit for vehicle member |
JP6311730B2 (ja) * | 2016-01-26 | 2018-04-18 | トヨタ自動車株式会社 | 歯車機構 |
US10451174B2 (en) * | 2016-07-29 | 2019-10-22 | Seiko Epson Corporation | Robot and gear device |
DE102016223058A1 (de) * | 2016-11-22 | 2018-05-24 | Bayerische Motoren Werke Aktiengesellschaft | Zahnradpaar mit Zahnrad mit Oberflächenstruktur, Getriebe mit Zahnradpaar und Verfahren zum Herstellen von Zahnrad |
US11614158B2 (en) * | 2020-07-13 | 2023-03-28 | GM Global Technology Operations LLC | Hydraulic Gerotor pump for automatic transmission |
CN111911610A (zh) * | 2020-09-16 | 2020-11-10 | 珠海市钧兴机电有限公司 | 一种汽车齿轮 |
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JPH0130008B2 (ja) * | 1984-07-14 | 1989-06-15 | Ntn Toyo Bearing Co Ltd | |
JPH0456254U (ja) * | 1990-09-21 | 1992-05-14 | ||
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JPH11230312A (ja) * | 1998-02-13 | 1999-08-27 | Nippon Steel Corp | 高接触疲労寿命歯車及びその製造方法 |
JP2002031212A (ja) * | 2000-07-17 | 2002-01-31 | Koyo Seiko Co Ltd | 転がり摺動部品 |
WO2005036003A1 (ja) * | 2003-10-10 | 2005-04-21 | Ntn Corporation | 転がり軸受 |
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US2279216A (en) * | 1939-11-04 | 1942-04-07 | Westinghouse Electric & Mfg Co | Gear and pinion |
JPS6430008A (en) | 1987-07-24 | 1989-01-31 | Canon Denshi Kk | Magnetic head |
JP2548811B2 (ja) * | 1989-11-30 | 1996-10-30 | エヌティエヌ株式会社 | 機械部品 |
JPH0456254A (ja) | 1990-06-25 | 1992-02-24 | Matsushita Electron Corp | 半導体装置の製造方法 |
JP2634496B2 (ja) * | 1991-02-28 | 1997-07-23 | エヌティエヌ株式会社 | エンジンのローラ付カムフォロア |
JP3326834B2 (ja) * | 1992-11-25 | 2002-09-24 | 日本精工株式会社 | 転がり軸受 |
DE19513254A1 (de) * | 1995-04-07 | 1996-10-10 | Schaeffler Waelzlager Kg | Maschinenteil |
US6732606B1 (en) * | 2000-06-30 | 2004-05-11 | Eaton Corporation | Polished gear surfaces |
JP2003065422A (ja) * | 2001-08-29 | 2003-03-05 | Koyo Seiko Co Ltd | 歯車、減速歯車機構及び電動式パワーステアリング装置 |
US7438477B2 (en) * | 2001-11-29 | 2008-10-21 | Ntn Corporation | Bearing part, heat treatment method thereof, and rolling bearing |
JP4056254B2 (ja) * | 2002-01-10 | 2008-03-05 | ダイヤ製薬株式会社 | 冷却シート |
-
2006
- 2006-10-23 CN CN2006800559052A patent/CN101512191B/zh not_active Expired - Fee Related
- 2006-10-23 WO PCT/JP2006/321011 patent/WO2008050378A1/ja active Application Filing
- 2006-10-23 US US12/445,485 patent/US8136420B2/en not_active Expired - Fee Related
- 2006-10-23 JP JP2008540800A patent/JPWO2008050378A1/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0130008B2 (ja) * | 1984-07-14 | 1989-06-15 | Ntn Toyo Bearing Co Ltd | |
JPH0456254U (ja) * | 1990-09-21 | 1992-05-14 | ||
JPH07242994A (ja) * | 1994-03-09 | 1995-09-19 | Daido Steel Co Ltd | 歯面強度の優れた歯車用鋼,歯車および歯車の製造方法 |
JPH11230312A (ja) * | 1998-02-13 | 1999-08-27 | Nippon Steel Corp | 高接触疲労寿命歯車及びその製造方法 |
JP2002031212A (ja) * | 2000-07-17 | 2002-01-31 | Koyo Seiko Co Ltd | 転がり摺動部品 |
WO2005036003A1 (ja) * | 2003-10-10 | 2005-04-21 | Ntn Corporation | 転がり軸受 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2008050378A1 (ja) | 2010-02-25 |
US8136420B2 (en) | 2012-03-20 |
US20100071495A1 (en) | 2010-03-25 |
CN101512191B (zh) | 2012-05-09 |
CN101512191A (zh) | 2009-08-19 |
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