WO2002004165A1 - Procede de fabrication de disque pour variateur - Google Patents
Procede de fabrication de disque pour variateur Download PDFInfo
- Publication number
- WO2002004165A1 WO2002004165A1 PCT/JP2001/005955 JP0105955W WO0204165A1 WO 2002004165 A1 WO2002004165 A1 WO 2002004165A1 JP 0105955 W JP0105955 W JP 0105955W WO 0204165 A1 WO0204165 A1 WO 0204165A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- input shaft
- spline
- variator
- blank
- disk
- 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
- F16H—GEARING
- F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
- F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
- F16H15/04—Gearings providing a continuous range of gear ratios
- F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
- F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
- F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
- F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/36—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes
- B23B5/40—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for turning specially-shaped surfaces by making use of relative movement of the tool and work produced by geometrical mechanisms, i.e. forming-lathes for turning spherical surfaces inside or outside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
- B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49995—Shaping one-piece blank by removing material
- Y10T29/49996—Successive distinct removal operations
Definitions
- the present invention relates to a method for manufacturing a disk for a variator mounted on a toroidal type continuously variable transmission. Height
- FIG. 5 is a schematic diagram showing a variator of a full toroidal type continuously variable transmission, which is one type of a toroidal type continuously variable transmission mounted on a vehicle or the like.
- the variator 10 includes an input shaft 13 that is driven to rotate by a vehicle power source 12, and the input shaft 13 supports input disks 15 near both ends thereof.
- a spline hole 15a formed by cutting a plurality of spline grooves is formed in the center of the input disk 15 and the input disk 15 is connected to the spline hole 15a of the input shaft 13.
- the input shaft 13 can rotate integrally with the input shaft 13 while allowing a slight movement in the axial direction.
- the movement of the input disk 15 is thus permitted, for example, by the hydraulic cylinder 17 connected to the hydraulic power source 16 as shown in FIG. This is because a required terminal load is applied to the noriator 10 by urging it to the 5 side.
- a concave curved track surface 15b is formed on one side surface of the input disk 15. '
- An output portion 18 of the variator 10 is supported at the axial center of the input shaft 13 so as to be relatively rotatable.
- the output section 18 includes an output member 19 and a pair of output disks 20 supported by the output member 19 so as to be integrally rotatable, respectively.
- the input disk 15 of the output disk 20 is provided.
- a sprocket gear 19a is formed on the outer periphery of the output member 19 so as to mesh with the power transmission chain 23.
- the orbital surfaces 15b and the output disk of the input disk 15 facing each other Between the 20 raceway surfaces 20b, three disc-shaped rollers 21 that are in rolling contact with the raceway surfaces 15b and 20b, respectively, are arranged at regular intervals around the circumference.
- Each roller 21 is rotatably supported by a carriage 22, and the relative position between each track surface 15 b and 20 b can be adjusted by the carriage 22.
- the variator 10 is configured as a so-called double-cavity type in which the input disk 15, the output disk 20, and the roller 21 are provided as a pair and provided as a pair.
- the torque is transmitted to the output disk 20 via the six rollers 21.
- the input disk 15 is made of, for example, bearing steel.
- the plank on which the spline hole 15 a and the raceway surface 15 b formed of the concave curved surface are formed by heat treatment is subjected to heat treatment.
- the raceway surface 15b is cut or ground using the inner peripheral surface (minimum inner diameter surface) of the spline hole 15a as a processing reference.
- the rollers 21 are connected to the raceway surfaces 15 of the disks 15, 20. It is necessary to uniformly contact b and 20b with a high contact pressure.
- the raceway surface 15b when the raceway surface 15b is finished after heat treatment, heat treatment distortion occurs on the tooth surface of the spline hole 15a, which is the processing reference.
- the assembling accuracy of the input disk 15 to the input shaft 13 depends on the fitting accuracy of the spline hole 15a of the input disk 15 and the spline shaft 13a of the input shaft 13. Due to the processing accuracy of the spline hole 15a, the heat treatment distortion, and the like, the axis of the raceway surface 15b is inclined with respect to the axis of the input shaft 13 and the assembling accuracy of the two is deteriorated.
- An object of the present invention is to provide a method of manufacturing a variator disc which can ensure good accuracy of a raceway surface with respect to the input shaft and has high productivity and low manufacturing cost.
- Another object of the present invention is to provide a method for manufacturing a variator disc capable of finishing the spline hole with high accuracy. Disclosure of the invention
- the method for manufacturing a variator disk according to the present invention is used for a variator of a toroidal-type continuously variable transmission.
- a method for manufacturing a variator disc having a spline hole to be combined comprising: forming a raceway surface having a concave curved surface on a side surface of an annular material while leaving a margin; and forming the spline hole in a plank having the raceway surface formed therein.
- the outer peripheral surface of the disk finished using the input shaft as a processing reference is further used to finish the raceway surface with the processing reference, so that the accuracy of the raceway surface with respect to the input shaft can be ensured well. Can be. For this reason, it is possible to make each roller contact the track surface evenly, to ensure the durability of the track surface and the roller, and to stably transmit the torque. Moreover, Higher productivity and lower manufacturing costs than finishing the spline holes with a ram.
- Another method for manufacturing a variator disk according to the present invention is used for a variator of a toroidal-type continuously variable transmission, and has a concave curved track surface on which a roller rolls on a side surface, and a spline of an input shaft at a center portion. What is claimed is: 1.
- a method for manufacturing a disc for a variator having a spline hole which is fitted with a shaft comprising: forming a raceway surface having a concave curved surface on a side surface of an annular material, leaving a margin; Forming the spline holes, heat-treating the blank by heat treatment, and after heat treatment of the plank, mating a spline hole of a disc with a spline shaft of the input shaft, And finishing the track surface with the input shaft as a processing reference (claim 2).
- the raceway surface is finished using the input shaft as a processing reference, so that the accuracy of the raceway surface with respect to the input shaft can be secured well. For this reason, it is possible to ensure the durability of the raceway surface and the rollers by uniformly contacting the rollers with the raceway surface, and to stably transmit the torque.
- the productivity is higher and the manufacturing cost is lower than when the spline hole is finished with a ram.
- Still another method of manufacturing a disc for a variator according to the present invention is used for a variator of a toroidal-type continuously variable transmission, and has a concave curved track surface on which a roller rolls on a side surface, and a central portion that is connected to an input shaft.
- a method for manufacturing a variator disc having a spline hole to be formed comprising: forming a raceway surface having a concave curved surface on a side surface of an annular material while leaving a margin; A step of forming the spline hole with leaving a margin, a step of heat-treating and curing the blank, and a step of finishing the tooth surface of the spline hole using a broach after the heat treatment of the plank. and a step of finishing the raceway surface using the tooth surface of the finished spline hole as a processing reference (claim 3).
- a spline hole is formed by a broach before heat treatment of the blank, and the tooth surface of the blank is finished by the broach after the heat treatment, so that the accuracy of the tooth surface is improved.
- the spline hole The raceway surface can be finished with high precision using the tooth surface of this as a processing reference. Therefore, the accuracy of the track surface with respect to the input shaft can be ensured well, and each of the apertures can be made even with respect to the track surface. As a result, the durability of the raceway surface and the rollers can be ensured, and the torque can be transmitted stably. Since the tooth surface is precisely finished using a broach, the productivity is high and the manufacturing cost is low. Further, since the contact between the spline hole and the spline shaft can be improved, the durability thereof can be improved. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a process chart showing one embodiment of a method for manufacturing a variator disk according to the present invention.
- FIG. 2 is a schematic view of a main part showing a state in which an input disk is threaded into a variator.
- FIG. 3 is a schematic view showing another embodiment of the present invention.
- FIG. 4 is a process drawing showing still another embodiment of the present invention.
- FIG. 5 is a schematic view of a conventional variator. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a process chart showing a method for manufacturing a variator disk according to the present invention. This manufacturing method is applied to the manufacture of an input disk D1 of a variator.
- a ring material A made of bearing steel or the like obtained by forging or the like is subjected to a cutting IJ process using a pitite 1.
- a raceway surface 2 composed of a concave curved surface and an outer peripheral end surface 3 are formed, and on the other side, an outer peripheral surface 5 and other required parts are formed in a predetermined shape. Cut the spline grooves to form spline holes 4 (see Fig. 1a).
- the cutting of the raceway surface 2, the outer peripheral side end surface 3 and the outer peripheral surface 5 is performed in a state where a predetermined allowance is left. Further, the spline hole 4 is formed in a dimension considering heat treatment distortion so as to match the spline shaft 6a formed on the input shaft 6 after the completion of the heat treatment in the next step.
- a heat treatment is applied to the plank B obtained by the above-mentioned U-shape processing to harden it to a hardness of, for example, HRC 60 to 63 (see FIG. 1 b). Then, the spline hole 4 of the hardened blank B is fitted to the corresponding spline shaft 6 a of the input shaft 6. In this state, the blank B is temporarily fixed to the input shaft 6 using a jig (not shown) so that the blank B does not move in the axial direction.
- the input shaft 6 is chucked to a lathe, and the outer peripheral surface 5 of the blank B is finished by cutting using the input shaft 6 as a processing reference. See Figure c). Thereby, the accuracy of the outer peripheral surface 5 and the outer peripheral side end surface 3 with respect to the input shaft 6 can be ensured satisfactorily.
- the plank B is removed from the input shaft 6, the outer peripheral surface 5 is chucked on an NC lathe, and the cutting tool 1 is used with the outer peripheral surface 5 as a load reference.
- the cutting tool 1 is used with the outer peripheral surface 5 as a load reference.
- finish track surface 2 see Fig. 1 d.
- the track surface 2 can also have good accuracy with respect to the input shaft 6.
- the input disk D 1 obtained in this manner is connected to the axis of the input shaft 6 with the spline hole 4 being aligned with the spline shaft 6 a of the input shaft 6. Since the relative positional accuracy between the track surface 2 of the disk D 1 and the track surface 2 of the output disk D 2 can be satisfactorily ensured, misalignment occurs between the center of curvature of the track D 2 and the center of curvature of the track 8 of the output disk D 2. Can be prevented. Therefore, the contact pressure between each raceway surface 2, 8 and each roller 9 can be equalized, and the durability of these raceway surfaces 2, 8 and the roller 9 can be ensured, and torque transmission can be stably performed. Can be performed.
- the orbital surface 2 is finished using the outer peripheral surface 5 of the blank B as a machining reference, but with the spline hole 4 of the blank B aligned with the spline shaft 6a of the input shaft 6,
- the track surface 2 along with the outer peripheral surface 5 and the outer peripheral side end surface 3 may be finished with pite 1 (see Fig. 3), and in this case, the accuracy of the raceway surface 2 with respect to the input shaft 6 is also ensured. can do.
- a grinding processing may be adopted instead of the cutting processing.
- FIG. 4 is a process chart showing another embodiment of the method for manufacturing a variator disk according to the present invention.
- This manufacturing method is based on an annular ring made of bearing steel or the like obtained by forging or the like.
- Material A is subjected to U-shape cutting using a cutting tool 1 to form a raceway surface 2 consisting of a concave curved surface on one side, and to form required parts such as the other side surface and the outer peripheral surface 5 into a predetermined shape.
- a spline hole 4 consisting of a plurality of spline grooves is formed at the center using a broach X (see FIG. 4a).
- These cutting processes are performed with a predetermined allowance left in consideration of heat treatment distortion.
- the spline hole 4 at least the side surface and the inner peripheral surface (minimum inner diameter surface) of the tooth surface 4a ) Processing with high accuracy, leaving a specified machining allowance.
- the blank B obtained by the cutting process is heat-treated to harden to a hardness of, for example, HRC 60 to 64 (see FIG. 4 b).
- tooth surface 4a are finished through the finishing broach Y through the spline hole 4 of the blank B that has been hardened (see FIG. 4c). Therefore, the tooth surface 4a can be finished with high precision.
- the raceway surface 2 on one side is finished using an NC lathe or a grinding machine, and the essential parts and the outer peripheral surface on the other side 5 is finished by J processing or J processing (see Fig. 4d).
- the input disk D1 for the palliator can be obtained.
- the input disk D 1 obtained in this way is finished and raced with the raceway surface 2 being used as a machining reference with the tooth surface 4 a of the precisely finished spline hole 4, so that the raceway surface 2 can be finished with high precision.
- the fitting accuracy between the spline hole 4 of the input disk D1 and the spline shaft 6a of the input shaft 6 is adjusted. Can be increased.
- connection structure between the output disk D 2 and the sleeve 7 a of the output member 7 When splines are used (see FIG. 2), the above-described manufacturing method can be applied to the output disk D2.
- the full toroidal type continuously variable transmission is illustrated, but the above-described manufacturing method can be applied to a disk having spline holes of a half toroidal type continuously variable transmission.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Friction Gearing (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01947941A EP1300215B1 (en) | 2000-07-11 | 2001-07-09 | Method of manufacturing disk for variator |
DE60137044T DE60137044D1 (de) | 2000-07-11 | 2001-07-09 | Verfahren zur herstellung von scheiben für variatoren |
US10/070,658 US6637107B2 (en) | 2000-07-11 | 2001-07-09 | Method of manufacturing disk for variator |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000209931A JP3981515B2 (ja) | 2000-07-11 | 2000-07-11 | バリエータ用ディスクの製造方法 |
JP2000-209931 | 2000-07-11 | ||
JP2000216109A JP3621027B2 (ja) | 2000-07-17 | 2000-07-17 | バリエータ用ディスクの製造方法 |
JP2000-216109 | 2000-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002004165A1 true WO2002004165A1 (fr) | 2002-01-17 |
Family
ID=26595804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/005955 WO2002004165A1 (fr) | 2000-07-11 | 2001-07-09 | Procede de fabrication de disque pour variateur |
Country Status (5)
Country | Link |
---|---|
US (1) | US6637107B2 (ja) |
EP (1) | EP1300215B1 (ja) |
KR (1) | KR100487421B1 (ja) |
DE (1) | DE60137044D1 (ja) |
WO (1) | WO2002004165A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7758630B2 (en) | 2003-04-14 | 2010-07-20 | Tryton Medical, Inc. | Helical ostium support for treating vascular bifurcations |
US8109987B2 (en) | 2003-04-14 | 2012-02-07 | Tryton Medical, Inc. | Method of treating a lumenal bifurcation |
US7972372B2 (en) | 2003-04-14 | 2011-07-05 | Tryton Medical, Inc. | Kit for treating vascular bifurcations |
US7717953B2 (en) | 2004-10-13 | 2010-05-18 | Tryton Medical, Inc. | Delivery system for placement of prosthesis at luminal OS |
US8083791B2 (en) | 2003-04-14 | 2011-12-27 | Tryton Medical, Inc. | Method of treating a lumenal bifurcation |
US7731747B2 (en) | 2003-04-14 | 2010-06-08 | Tryton Medical, Inc. | Vascular bifurcation prosthesis with multiple thin fronds |
JP2005061494A (ja) * | 2003-08-11 | 2005-03-10 | Nsk Ltd | 無段変速機のバリエータ部品の製造方法及び無段変速機のバリエータ部品 |
DE102005051060A1 (de) * | 2004-10-26 | 2006-05-11 | Nsk Ltd. | Kontinuierlich variables Toroidgetriebe |
US20080087450A1 (en) * | 2006-10-11 | 2008-04-17 | Trong-Ruey Lin | Method for assembling a front cover to a bush in a pneumatic tool |
US8382818B2 (en) | 2009-07-02 | 2013-02-26 | Tryton Medical, Inc. | Ostium support for treating vascular bifurcations |
EP2642946B1 (en) | 2010-11-24 | 2023-08-16 | Poseidon Medical Inc. | Support for treating vascular bifurcations |
US20130239400A1 (en) * | 2010-12-10 | 2013-09-19 | Nsk Ltd. | Method of Manufacturing Continuously Variable Transmission Variator Component and Chuck Apparatus for Manufacturing Variator Component |
EP2841024B1 (en) | 2012-04-26 | 2017-05-03 | Tryton Medical, Inc. | Support for treating vascular bifurcations |
ITTO20120622A1 (it) | 2012-07-13 | 2014-01-14 | Skf Ab | Procedimento per la lavorazione di un disco variatore da usare in una trasmissione toroidale a variazione continua |
US10456849B2 (en) * | 2017-05-25 | 2019-10-29 | General Electric Company | Composite component having angled braze joint, coupon brazing method and related storage medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11197784A (ja) * | 1998-01-13 | 1999-07-27 | Nippon Seiko Kk | トロイダル型無段変速装置の入出力ディスクの製造方法 |
JP2000061702A (ja) * | 1998-08-26 | 2000-02-29 | Nippon Seiko Kk | トロイダル型無段変速機用ディスクの端面加工方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1244085B (it) * | 1990-06-01 | 1994-07-05 | Luciano Spaggiari | Variatore epicicloidale a dischi con rotismo combinatore epicicloidale |
JP3204354B2 (ja) | 1994-08-05 | 2001-09-04 | 日産自動車株式会社 | トロイダル型無段変速装置の転動面仕上げ加工方法 |
JP3758348B2 (ja) * | 1997-12-26 | 2006-03-22 | 日本精工株式会社 | トロイダル型無段変速機のディスク及びその製造方法 |
JP2000024899A (ja) * | 1998-05-01 | 2000-01-25 | Nippon Seiko Kk | ハ―フトロイダルcvtディスクのトラクション面研削方法 |
US5961415A (en) * | 1998-09-17 | 1999-10-05 | Ford Global Technologies, Inc. | Single cavity toroidal traction drive continually variable transmission |
US6099431A (en) * | 1999-05-06 | 2000-08-08 | Ford Global Technologies, Inc. | Method for operating a traction drive automatic transmission for automotive vehicles |
JP3851099B2 (ja) * | 2001-02-28 | 2006-11-29 | 株式会社ジェイテクト | バリエータ用ディスクの製造方法 |
-
2001
- 2001-07-09 DE DE60137044T patent/DE60137044D1/de not_active Expired - Lifetime
- 2001-07-09 KR KR10-2002-7003098A patent/KR100487421B1/ko not_active IP Right Cessation
- 2001-07-09 US US10/070,658 patent/US6637107B2/en not_active Expired - Lifetime
- 2001-07-09 WO PCT/JP2001/005955 patent/WO2002004165A1/ja active IP Right Grant
- 2001-07-09 EP EP01947941A patent/EP1300215B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11197784A (ja) * | 1998-01-13 | 1999-07-27 | Nippon Seiko Kk | トロイダル型無段変速装置の入出力ディスクの製造方法 |
JP2000061702A (ja) * | 1998-08-26 | 2000-02-29 | Nippon Seiko Kk | トロイダル型無段変速機用ディスクの端面加工方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1300215A4 * |
Also Published As
Publication number | Publication date |
---|---|
KR20020029405A (ko) | 2002-04-18 |
EP1300215B1 (en) | 2008-12-17 |
DE60137044D1 (de) | 2009-01-29 |
US20030084560A1 (en) | 2003-05-08 |
KR100487421B1 (ko) | 2005-05-03 |
EP1300215A1 (en) | 2003-04-09 |
EP1300215A4 (en) | 2005-02-02 |
US6637107B2 (en) | 2003-10-28 |
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