WO2006011534A1 - 減速ギヤ - Google Patents
減速ギヤ Download PDFInfo
- Publication number
- WO2006011534A1 WO2006011534A1 PCT/JP2005/013771 JP2005013771W WO2006011534A1 WO 2006011534 A1 WO2006011534 A1 WO 2006011534A1 JP 2005013771 W JP2005013771 W JP 2005013771W WO 2006011534 A1 WO2006011534 A1 WO 2006011534A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- worm
- mating surface
- grease
- reduction gear
- gear teeth
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/003—Making screw-threads or gears
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/008—Surface roughening or texturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0409—Electric motor acting on the steering column
-
- 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
-
- 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
- F16H57/0463—Grease lubrication; Drop-feed lubrication
-
- 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
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0498—Worm gearings
-
- 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
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
-
- 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
- Y10T74/19642—Directly cooperating gears
- Y10T74/19698—Spiral
- Y10T74/19828—Worm
-
- 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
- Y10T74/19991—Lubrication
Definitions
- the present invention relates to a reduction gear used for electric power steering and the like, and more particularly to improvement of durability of the reduction gear.
- a reduction mechanism such as an electric power steering apparatus has advantages such as being able to obtain a large reduction ratio and transmit the rotational force of an electric motor that rotates at high speed and low torque to a steering shaft.
- a worm, a worm wheel having gear teeth meshing with the worm, and a power reduction gear are used.
- Patent Document 1 and Patent Document 2 disclose the above.
- Patent Document 1 treats the sliding contact surface with a fluid that can dissolve the material used for the sliding contact surface between the worm and the worm wheel. As a result, an oil reservoir is formed on the sliding contact surface, and the grease is held by the oil reservoir. Further, Patent Document 1 discloses a method in which an oil reservoir is formed by laser machining or electric discharge machining, in addition to the machining method using a chemical reaction using the fluid.
- the reduction gear (reduction gear) of Patent Document 2 is provided on both sides of the teeth of the worm and Z or worm wheel, the tooth surface between the central portion near the pitch circle and the tooth bottom, and Z or A long groove is provided in the tooth surface direction on the tooth surface between the central portion and the tooth tip, and the lubricant such as grease held in the groove is in a state where the lubricant is insufficient due to the centrifugal force during rotation. It is designed to be supplied to the central part.
- Patent Document 1 Japanese Patent Application Laid-Open No. 8-226526
- Patent Document 2 Japanese Patent Laid-Open No. 2003-207031
- the means for holding the grease between the gear teeth of the worm and the worm wheel is a plurality of oil sump portions aligned with the surface of the teeth of the worm wheel. For this reason, when grease becomes insufficient in some oil reservoirs during long-term operation, the oil cannot be replenished by pulling in other oil reservoir forces due to the structure. For this reason, it is necessary to periodically maintain the grease filling state on the mating surface, which causes a problem in continuous operation for a long period of time.
- the processing method for forming the oil sump portion of Patent Document 1 requires a large-scale device and complicated processing work, and thus requires manufacturing costs and labor. Furthermore, in the processing method using a chemical reaction, there has been a problem that the material properties of the composite surface change due to the chemical reaction.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to ensure that grease for lubricating the mating surfaces of the gear teeth is sufficiently supplied over the entire mating surface.
- the object of the present invention is a force with a worm formed of metal and a worm wheel having gear teeth meshing with the worm, and at least the gear teeth of the worm wheel are formed of a synthetic resin,
- the mating surface of the gear teeth is a reduction gear lubricated with grease, and the mating surface has a plurality of grease reservoir grooves formed along the sliding lines of the mating surface over the entire surface.
- the above-mentioned object is to grind the mating surface of the grease retaining groove by rotating a processing worm having diamond or CBN granule electrodeposited on a tooth surface while meshing with the gear teeth. This is achieved effectively by forming on the mating surface by a processing method.
- the object is to be a force with a worm formed of metal and a worm wheel having gear teeth meshing with the worm, and at least the gear teeth of the worm wheel are formed of a synthetic resin, and
- the meshing surface of the gear teeth is a reduction gear lubricated with grease, the arithmetic mean roughness Ra of the surface of the worm is 0 or less, and the mating surface of the worm wheel is This is achieved by having a plurality of grease reservoir recesses formed to be scattered over the entire surface.
- the above object is that the grease reservoir recess is formed on the mating surface by a processing method in which a plasma discharge is applied to the mating surface to form a recess, and then the mating surface is conditioned with the worm. Is effectively achieved.
- the above object is that the grease reservoir recess is formed on the mating surface by a machining method in which the mating surface is dented using blasting, and then the mating surface is conditioned with the worm. Is effectively achieved.
- the above object is effectively achieved by configuring the worm and the worm wheel as a speed reduction mechanism of an electric power steering device.
- the meshing surface force of the gear teeth of the worm wheel has a plurality of grease reservoir grooves formed along the sliding line of the meshing surface over the entire surface.
- the grease can be sufficiently retained even when the surface pressure is increased, and the lubricity on the entire surface of the mating surface can be maintained in a good state.
- another grease reservoir groove formed near the grease reservoir groove can also draw in the grease. , Local grease oil film breakage can be prevented. As a result, wear on the mating surface can be reduced, and the fatigue life can be extended.
- a force worm having diamond abrasive grains or CBN abrasive grains electrodeposited on the tooth surface is used, or the grease reservoir
- plasma discharge or blasting as a processing means when forming the recess, the mating surface can be easily processed.
- a reduction gear capable of torque transmission with high efficiency and high output can be manufactured at low cost and with low labor.
- FIG. 1 is a perspective view of a reduction gear according to an embodiment of the present invention.
- FIG. 2 is a perspective view of essential parts of gear teeth of the reduction gear according to Embodiment 1 of the present invention.
- FIG. 3 is a cross-sectional view of the main part of the mating surface of the gear teeth, where (a) shows a state in which no surface pressure is applied to the mating surface, and (b) shows a surface pressure applied to the mating surface. Indicates the state.
- FIG. 4 is a cross-sectional view of a reduction mechanism of an electric power steering device using the reduction gear.
- FIG. 5 is a perspective view of essential parts of gear teeth of the reduction gear according to Embodiment 2 of the present invention.
- FIG. 1 is a perspective view of a reduction gear according to an embodiment of the present invention.
- a reduction gear 1 is composed of a metal worm 2 and a worm wheel 4 having gear teeth 3 meshing with the worm 2.
- the worm wheel 4 is obtained by integrating a grease portion 5 having a gear tooth 3 formed on the outer peripheral surface thereof and a metal cored bar 6.
- the resin part 5 is formed of a synthetic resin containing reinforcing fibers.
- a synthetic resin for example, nylon (polyamide) resin such as nylon 6, nylon 66, nylon 46, polyacetal resin, phenol resin, etc., glass fiber, carbon U, reinforced fibers such as fiber, potassium titanate whisker, aluminum borate-muis whisker, etc. are preferred.
- nylon (polyamide) resin such as nylon 6, nylon 66, nylon 46, polyacetal resin, phenol resin, etc., glass fiber, carbon U, reinforced fibers such as fiber, potassium titanate whisker, aluminum borate-muis whisker, etc. are preferred.
- a synthetic resin is used that does not contain reinforcing fibers, it is a monomer that has a certain level of durability even when used alone. It is desirable to apply one casting nylon or the like.
- the metal worm 2 has an arithmetic surface roughness Ra of 0.1 ⁇ m so that it works favorably against wear with the worm wheel 4 that is the counterpart material and functions sufficiently as a reduction gear. m or less is preferable.
- the grease portion 5 extending from the outer peripheral surface force of the core metal 6 to the tooth ends of the gear teeth 3 is formed of synthetic resin.
- the present invention is not limited to this.
- the worm wheel 4 The whole may be formed of synthetic resin, or only the outer peripheral portion of the worm wheel 4 on which the gear teeth 3 are formed may be formed of synthetic resin.
- the reduction gear 1 schematically configured as described above, at least the teeth of the worm 2 and the contact portion of the gear teeth 3 of the worm wheel 4 between the worm 2 and the worm wheel 4 are lubricated.
- this grease mineral oil, synthetic hydrocarbon oil (including poly-a 1-year-old refin oil), ester-based synthetic oil, and phenol ether are used so as to have an advantageous effect on the wettability of the gear teeth 3 to the synthetic resin. It is preferable to use a base synthetic oil or the like as a base oil, and to which an additive and an ester compound are added.
- ester compounds as additive agents include ester waxes or small amounts.
- Ester-based synthetic oils including diester oils, polyol ester oils, and aromatic ester oils are desirable.
- FIG. 2 is a perspective view of a main part of the gear teeth according to the first embodiment of the present invention.
- the tooth surface of the gear tooth 3 is formed with a mating surface 7 that is in sliding contact with the worm 2, and the mating surface 7 includes a plurality of sliding surfaces (in the direction of arrow A in FIG. 2).
- a grease reservoir groove 8 is formed over the entire surface.
- the grease reservoir groove 8 is for holding the filled grease on the mating surface 7.
- FIG. 2 only a few grease reservoir grooves 8 are shown, but in actuality, the grease reservoir grooves 8 are formed innumerably over the entire surface of the mating surface 7.
- the grease pool groove 8 is formed by processing means after the gear teeth 3 are formed by cutting U or grinding.
- this processing means for example, there is a method of grinding the mating surface 7 with a force worm having electrodeposited diamond abrasive grains.
- a force worm having electrodeposited diamond abrasive grains.
- the diamond is used for electrolytic plating.
- a worm of the same type as the worm 2 used for the reduction gear 1 is electrodeposited with a natural diamond barrel having a particle size of around 600, taking advantage of the formation of a film while embedding the Mondo barrel. It is.
- a meshed surface 7 is ground by rotating a meshed electrode with diamond abrasive grains while meshing with the mating surface 7 of the gear teeth 3, and then used for the reduction gear 1.
- Infinite number of grease reservoir grooves 8 are formed by running-in the mating surface 7 with the worm 2.
- natural diamond was used as the abrasive to be electrodeposited.
- the present invention is not limited to this, and for example, synthetic diamond, metal film synthetic diamond, or the like may be used.
- CBN particles such as cubic boron nitride or metal-coated cubic boron nitride can be used as electrodeposits to be electrodeposited.
- the above-described curing means may be used as another processing worm. It is possible to obtain the same working effect as the above-described caulking method using the force worm with electrodeposited diamond barrels.
- a processing means for cutting the mating surface 7 along a sliding line in the direction of arrow A in FIG. 2 with a hob whose teeth are toothed.
- a processing means for rubbing the mating surface 7 along the sliding line with a brush is applied, the same effect as the processing method described above can be obtained.
- FIG. 3 is a cross-sectional view of the main part of the mating surface 7 cut perpendicularly to the grease reservoir groove 8. (a) shows a state in which no surface pressure is applied to the mating surface 7. b) shows the condition where surface pressure is applied to the mating surface 7.
- the gear teeth 3 made of synthetic resin are elastically deformed when a contact pressure is applied from the direction of arrow B in FIG. As a result, the mating surface 7 is crushed, and the mouth of the dull reservoir groove 8 becomes smaller. As a result, the grease reservoir groove 8 having a small mouth sucks grease into the groove by a capillary effect, and can sufficiently hold the grease even under high surface pressure.
- the infinite number of grease collecting grooves 8 are all formed on the mating surface 7 of the gear teeth 3 of the worm wheel 4 along the sliding line of the mating surface 7. It is formed over the surface. Therefore, the grease force filled in the mating surface 7 is retained by the grease reservoir groove 8, and the lubricity on the entire surface of the mating surface 7 can be maintained in a good state. As a result, the coefficient of sliding friction between the worm 2 and the worm wheel 4 can be reduced, and the durability of the reduction gear can be improved.
- a worm in which diamond or CBN particles are electrodeposited a worm in which the tooth surface is roughened and hardened with strong acid, a worm in which the tooth surface is roughened by nitriding, Innumerable grease retaining grooves 8 can be easily formed on the mating surface 7 by using a hob or brush having a toothed surface.
- the reduction gear configured as described above is applied to the device, the force for explaining the reduction mechanism of the electric power steering device.
- the reduction gear according to the present invention is limited thereby. It can be used as a speed reduction mechanism for a wide variety of devices.
- the same members as those of the above-described reduction gear are denoted by the same reference numerals, and description thereof is omitted.
- FIG. 4 is a cross-sectional view of the speed reduction mechanism of the electric power steering apparatus to which the reduction gear is applied.
- a speed reduction mechanism 10 decelerates rotation of an electric motor 11 for assisting steering through a worm 2 connected to a rotating shaft 12 of the electric motor 11 and a worm wheel 4 meshed with the worm 2. However, it is transmitted to the steering shaft 13 that is press-fitted and fixed to the core 6 of the worm wheel 4.
- FIG. 5 is a perspective view of a main part of a gear tooth according to the second embodiment of the present invention.
- symbol is attached
- a mating surface 7 for mating with the worm 2 is formed on the tooth surface of the gear tooth 3 of the second embodiment, and a plurality of grease reservoir recesses 14 are formed on the mating surface 7. .
- the grease reservoir recess 14 is for holding the filled grease. In FIG. 5, only a few grease reservoir recesses 14 are shown, but in reality, the grease reservoir recesses 14 may be formed to be scattered innumerably over the entire surface of the mating surface 7.
- the grease reservoir groove 8 is formed by processing means after the gear teeth 3 are formed by cutting U or grinding.
- this processing means for example, by applying countless plasma discharges to the mating surface 7 and applying innumerable irregularities to the surface, and then accustoming the mating surface 7 with the worm 2, an infinite number of grease pools are obtained.
- a brush used for improving the fatigue life of the surface of the work piece or for removing and cleaning scale, rust, paint film, etc. on the surface of the work piece.
- Stroke processing may be used. This blasting process is called shot peening, which improves fatigue life by projecting a large number of small steel particles called shots onto the surface of the workpiece, leaving compressive stress, and is called shots or grids.
- shots shots onto the surface of the workpiece, leaving compressive stress
- shots or grids Use a sandblaster to remove sand and scales on the surface of shot blasting that projects the surface of the workpiece by projecting small particles with corners, etc. For example, sand blasting that sprays alumina surface) on the surface of the object.
- the abrasive used in the blasting process as described above is projected onto the mating surface 7, and numerous indentations are applied to the surface, and then the mating surface 7 is conditioned by the worm 2. Innumerable grease reservoir recesses 14 are formed.
- the reduction gear according to the second embodiment is formed such that innumerable grease reservoir recesses 14 are scattered over the entire surface on the mating surface 7 of the gear teeth 3 of the worm wheel 4. It has been done. Therefore, the grease force filled in the mating surface 7 is retained by the grease reservoir recess 14 and the lubricity on the entire surface of the mating surface 7 can be maintained in a good state. An effect can be obtained.
- the reduction gear according to the second embodiment can also be used for the reduction mechanisms of various devices including the reduction mechanism of the electric power steering device, as in the first embodiment.
- wear generated on the mating surface is reduced by covering the mating surface so that the grease for lubricating the mating surface of the gear teeth is sufficiently supplied over the entire mating surface. It is possible to provide a reduction gear that improves the durability of the gear teeth.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gears, Cams (AREA)
- Power Steering Mechanism (AREA)
- Gear Transmission (AREA)
- General Details Of Gearings (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05767293A EP1780446A1 (en) | 2004-07-27 | 2005-07-27 | Speed-reduction gear |
US11/658,681 US20080168854A1 (en) | 2004-07-27 | 2005-07-27 | Reduction Gear |
JP2006527833A JPWO2006011534A1 (ja) | 2004-07-27 | 2005-07-27 | 減速ギヤ |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004218345 | 2004-07-27 | ||
JP2004-218345 | 2004-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006011534A1 true WO2006011534A1 (ja) | 2006-02-02 |
Family
ID=35786284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/013771 WO2006011534A1 (ja) | 2004-07-27 | 2005-07-27 | 減速ギヤ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080168854A1 (ja) |
EP (1) | EP1780446A1 (ja) |
JP (1) | JPWO2006011534A1 (ja) |
WO (1) | WO2006011534A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1859885A1 (de) * | 2006-05-22 | 2007-11-28 | Anton Eckschlager | Verfahren zur Herstellung von Zahnrädern Verzahnungssystemen und zueinander relativ bewegten Komponenten mit optimierter Geometrie und verbesserten tribologischen Eigenschaften sowie Einrichtungen dazu |
US20090056489A1 (en) * | 2007-08-31 | 2009-03-05 | Robert Bosch Gmbh | Plastic gear, drive with a plastic gear as well as manufacturing method |
JP2009074663A (ja) * | 2007-09-25 | 2009-04-09 | Enplas Corp | 成形プラスチック歯車 |
JP2009192057A (ja) * | 2008-02-18 | 2009-08-27 | Nsk Ltd | ウォームホイールおよびその加工方法 |
JP2011033197A (ja) * | 2010-11-09 | 2011-02-17 | Nsk Ltd | ウォーム減速機および電動パワーステアリング装置 |
JP2012163179A (ja) * | 2011-02-08 | 2012-08-30 | Jtekt Corp | 減速機構および電動パワーステアリング装置 |
WO2018029723A1 (ja) * | 2016-08-09 | 2018-02-15 | マツダ株式会社 | 歯車の加工方法及び加工装置 |
US10920163B2 (en) | 2014-12-26 | 2021-02-16 | Kyodo Yushi Co., Ltd. | Grease composition for lubricating resins and electric power steering device |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009000297A1 (de) * | 2009-01-19 | 2010-07-22 | Robert Bosch Gmbh | Getriebeelement, Getriebe, Vorrichtung mit Getriebe sowie Verfahren zum Herstellen eines Getriebeelementes |
JP2011255818A (ja) * | 2010-06-10 | 2011-12-22 | Jtekt Corp | 電動パワーステアリング装置 |
JP5571598B2 (ja) * | 2011-02-16 | 2014-08-13 | カヤバ工業株式会社 | ウォーム減速機 |
JP5953773B2 (ja) * | 2012-01-30 | 2016-07-20 | アイシン精機株式会社 | フェースギヤ及びギヤ装置 |
DE102012206137B4 (de) * | 2012-04-16 | 2014-12-31 | Robert Bosch Gmbh | Verfahren zur Herstellung eines verzahnten Bauteils sowie derartiges Bauteil |
DE102017204835A1 (de) * | 2017-03-22 | 2018-09-27 | Robert Bosch Gmbh | Getriebeantriebseinrichtung und Verfahren zu dessen Herstellung |
EP4151886A1 (en) * | 2018-04-23 | 2023-03-22 | Asahi Kasei Kabushiki Kaisha | Cellulose-containing gear |
DE102018217617A1 (de) * | 2018-10-15 | 2020-04-16 | Robert Bosch Gmbh | Verfahren zum Herstellen einer Getriebeschnecke, die insbesondere auf einer Ankerwelle angeordnet ist, sowie eine solche Getriebeschnecke |
JP7377002B2 (ja) * | 2019-03-29 | 2023-11-09 | ミネベアミツミ株式会社 | アブソリュートエンコーダ |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH058111U (ja) * | 1991-07-19 | 1993-02-05 | アスモ株式会社 | ウオーム減速装置 |
JPH08226526A (ja) * | 1994-12-12 | 1996-09-03 | Asmo Co Ltd | 部材間低摩擦化構造及びそれにおける摺接面の加工方法、ウォーム減速装置 |
JP2000202719A (ja) * | 1999-01-12 | 2000-07-25 | Shinei Seisakusho:Kk | ウォ―ムホイ―ル用の電解研削装置 |
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 |
JP2003207031A (ja) * | 2002-01-11 | 2003-07-25 | 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 |
JP2004155223A (ja) * | 2002-11-01 | 2004-06-03 | Nsk Ltd | 電動パワーステアリング装置用ウォームホイール |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6732606B1 (en) * | 2000-06-30 | 2004-05-11 | Eaton Corporation | Polished gear surfaces |
US7798033B2 (en) * | 2002-11-14 | 2010-09-21 | Ims Gear Gmbh | Power-assisted steering having a gear mechanism |
-
2005
- 2005-07-27 US US11/658,681 patent/US20080168854A1/en not_active Abandoned
- 2005-07-27 JP JP2006527833A patent/JPWO2006011534A1/ja not_active Withdrawn
- 2005-07-27 WO PCT/JP2005/013771 patent/WO2006011534A1/ja not_active Application Discontinuation
- 2005-07-27 EP EP05767293A patent/EP1780446A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH058111U (ja) * | 1991-07-19 | 1993-02-05 | アスモ株式会社 | ウオーム減速装置 |
JPH08226526A (ja) * | 1994-12-12 | 1996-09-03 | Asmo Co Ltd | 部材間低摩擦化構造及びそれにおける摺接面の加工方法、ウォーム減速装置 |
JP2000202719A (ja) * | 1999-01-12 | 2000-07-25 | Shinei Seisakusho:Kk | ウォ―ムホイ―ル用の電解研削装置 |
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 |
JP2003207031A (ja) * | 2002-01-11 | 2003-07-25 | 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 |
JP2004155223A (ja) * | 2002-11-01 | 2004-06-03 | Nsk Ltd | 電動パワーステアリング装置用ウォームホイール |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1859885A1 (de) * | 2006-05-22 | 2007-11-28 | Anton Eckschlager | Verfahren zur Herstellung von Zahnrädern Verzahnungssystemen und zueinander relativ bewegten Komponenten mit optimierter Geometrie und verbesserten tribologischen Eigenschaften sowie Einrichtungen dazu |
US20090056489A1 (en) * | 2007-08-31 | 2009-03-05 | Robert Bosch Gmbh | Plastic gear, drive with a plastic gear as well as manufacturing method |
JP2009074663A (ja) * | 2007-09-25 | 2009-04-09 | Enplas Corp | 成形プラスチック歯車 |
JP2009192057A (ja) * | 2008-02-18 | 2009-08-27 | Nsk Ltd | ウォームホイールおよびその加工方法 |
JP2011033197A (ja) * | 2010-11-09 | 2011-02-17 | Nsk Ltd | ウォーム減速機および電動パワーステアリング装置 |
JP2012163179A (ja) * | 2011-02-08 | 2012-08-30 | Jtekt Corp | 減速機構および電動パワーステアリング装置 |
US10920163B2 (en) | 2014-12-26 | 2021-02-16 | Kyodo Yushi Co., Ltd. | Grease composition for lubricating resins and electric power steering device |
WO2018029723A1 (ja) * | 2016-08-09 | 2018-02-15 | マツダ株式会社 | 歯車の加工方法及び加工装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2006011534A1 (ja) | 2008-05-01 |
US20080168854A1 (en) | 2008-07-17 |
EP1780446A1 (en) | 2007-05-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2006011534A1 (ja) | 減速ギヤ | |
US6732606B1 (en) | Polished gear surfaces | |
JP5305123B2 (ja) | 歯車 | |
EP1954960B1 (en) | Gear having improved surface finish | |
TWM275058U (en) | Superfinishing large planetary gear systems | |
US10179388B2 (en) | High throughput finishing of metal components | |
CN1491146A (zh) | 化学机械加工和表面精加工 | |
CN101878382A (zh) | 用于齿轮的纹理表面 | |
JP4172865B2 (ja) | 外歯歯車の研磨方法及び研磨装置 | |
US20030070297A1 (en) | Method for fabricating external-tooth gears | |
EP1780444B1 (en) | Speed reduction gear | |
EP1332823A1 (en) | Gear, and method and device for finishing tooth face of gear | |
CN115533728A (zh) | 一种柔性薄壁弯管内壁化学机械抛光装备与方法 | |
Jain et al. | 1.4 review of gear finishing processes | |
EP2283969A1 (en) | High throughput finishing of metal components | |
JP2005320604A (ja) | 金属表面の処理方法 | |
JP2010032025A (ja) | 遊星ローラねじ装置 | |
JP2002126993A (ja) | 歯車の製造法及び該加工装置 | |
CN217481892U (zh) | 一种具有粉末冶金层的齿轮轴 | |
JP2000280120A (ja) | 歯車の製造法 | |
JP2002154016A (ja) | 接触面を有する部材及び接触面の仕上げ加工方法 | |
Nakae et al. | Gear Finishing With a Nylon Lap | |
RU2213157C2 (ru) | Способ упрочняющей обработки зубчатых колес с нанесением покрытия | |
FUJISAWA et al. | METHOD FOR FINISHING THE TOOTH FLANK OF SURFACE-HARDENED SMALL GEARS USING A GEAR-SHAPED TOOL COMPOSED OF ALUMINA-FIBER-REINFORCED PLASTIC | |
Tonshoff et al. | Comparison of surfaces generated by diffferent finishing processes for gears |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006527833 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2005767293 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11658681 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005767293 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2005767293 Country of ref document: EP |