• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    It is described a gear transmission stage of two intermeshing, hardened by a heat treatment gears. In order to improve the noise behavior, it is proposed that one of the two gearwheels have a final shape determined by a hard finish and the other gearwheel has a near-net shape determined by the heat treatment.
    公开号:AT512390A4
    申请号:T50182/2012
    申请日:2012-05-15
    公开日:2013-08-15
    发明作者:
    申请人:Miba Sinter Austria Gmbh；
    IPC主号:
    专利说明:

    1
    (38566) II
    The invention relates to a gear transmission stage of two intermeshing, hardened by a heat treatment gears. For highly stressed gears, a heat treatment for hardening in particular the tooth flanks is generally provided. Such heat treatments, however, result in distortions that impair the quality of the teeth, so that the gears are subjected to a hard fine finishing, usually by grinding, after their heat treatment. Despite the possible with this refinement low manufacturing tolerance and the associated high gear quality but the Geräuschverhatten remains unsatisfactory. With higher demands on the noise behavior of gear transmission stages, as used for example in gear drives for mass balance or for control drives of internal combustion engines, therefore elaborate spur gears are used with a helical gear in terms of their production, which brings advantages in terms of noise behavior with it.
    The invention is therefore an object of the invention to provide a gear transmission stage for higher loads, in which the noise behavior can be significantly improved.
    Starting from a gear transmission stage of the type described above, the invention solves this problem in that one of the two gears 2 2 102D12 / 50182 by a hard finishing certain end shape and the other gear have a determined by the heat treatment, endkontumahe shape.
    The invention is based on the finding that with a tolerance-free toothing the tooth engagement takes place at a constant rotational speed without deviations at a specific frequency, the so-called meshing frequency. With this tooth engagement frequency thus bundles the energy transmitted between the gears, resulting in a corresponding noise level at the meshing frequency. If this excitation energy due to tooth meshing can be distributed to a frequency band, the amplitudes of the individual oscillation frequencies decrease, which is perceived in psychoacoustic terms as a significant improvement of the noise behavior. In addition, the distribution of the excitation energy to several frequencies supports the attenuation of structure-borne noise. Accordingly, if a gear of a pair of gears after its heat treatment by a hard fine machining with low manufacturing tolerances, while the other gear is no longer subjected to such hard fine machining and therefore has a near-net shape determined by the heat treatment, there is no pronounced tooth engagement frequency, but a frequency band due the distortion maintained by the heat treatment with the one gear, with the effect that the excitation energy is divided into several frequencies and the noise event is psychoacoustically perceived more as noise than as sound. It goes without saying that the tolerances permitted by near-net shape fabrication must not exceed a certain tolerance range in order not to have to accept additional vibration stimuli that worsen the noise behavior. Since with heavy-duty gears already before the heat treatment, a tooth shape must be ensured, which corresponds to low tolerances of the final shape, occurring in the heat treatment delays in the tooth area usually remain in a tolerance range, the pairing of such gears with hard-machined gears to a desired wider frequency band leads to noise. 3
    If the gears of such a gear stage made of sintered steel, so particularly favorable properties can be ensured in terms of noise education, because the damping effect of the sintered body in the transmission of structure-borne noise can be used in addition. With the aid of a gear transmission stage according to the invention, it is possible, especially when using at least one gear made of sintered steel, to ensure a noise behavior for straight-toothed spur gears, which can be achieved at most with helical spur gears in conventional gear transmission stages. It need not be mentioned separately that with a helical toothing according to the invention formed gears a further improvement of the Ge-noise behavior is possible.
    权利要求:
    Claims (3)
    [1]
    10 2012/50182 Patent Attorneys Dipl. Helmut Hübscher Dipl.-Ing. 1. Gear transmission stage of two intermeshing, hardened by a heat treatment gears, characterized in that one of the two gears determined by a hard fine finishing and the other gear through the Heat treatment have certain close to final shape.
    [2]
    2. gear transmission stage according to claim 1, characterized in that at least one of the two gears is made of sintered steel.
    [3]
    3. gear transmission stage according to claim 1 or 2, characterized in that the gears are formed as spur geared spur gears. Linz, May 15, 2012 Miba Sinter Austria GmbH by: / Dl Karl Winfried Hellmich / (electronically signed)
    类似技术:
    公开号 | 公开日 | 专利标题
    EP1391637B1|2007-10-31|Gear arrangement
    EP2938906B1|2017-07-26|Divided toothed wheel
    DE102004062379B3|2006-02-02|Unit of crown wheel and pinion, comprising teeth of pinion with wider meshing area located at inner edge
    DE102013110396A1|2014-04-30|gearing
    DE10247330B4|2013-02-28|Powder metallurgically produced sliding sleeve
    AT512390B1|2013-08-15|Gear transmission stage
    EP2345817B1|2013-09-11|Plastic and metal thread drive with a threaded nut and a spindle
    EP3209905B1|2021-10-27|Gear pair of a gearbox
    DE102005013134A1|2006-09-28|Gear wheel for internal combustion engine, has base plates comprising radially distant regions, which extend to sprockets made of plastic, where regions are made from single piece with metallic base plates
    DE102013106686A1|2014-12-31|gear
    DE19817936A1|1999-10-28|Drive arrangement
    DE102011002003A1|2012-10-18|Gear rack, useful for a steering gear of a motor vehicle e.g. a car, comprises a gearing, and a near-surface hardened zone formed in the gearing, where the gearing comprises a gearing head and gearing flanks
    DE102014016812A1|2015-05-21|Method for machining a toothed component
    DE102014216727A1|2016-02-25|Gear element for noise reduction
    DE102019215965A1|2021-04-22|Toothed belt drive with varying tooth pitch
    DE102020107416A1|2020-10-01|Sprocket and drive mechanism
    DE102020208810A1|2022-01-20|Gear pair for a transmission and method for dimensioning tooth thicknesses on gears of a gear pair
    DE10102294A1|2002-08-01|Tooth for gear wheel has tooth head of lower impact resistance than tooth flanks
    DE102020114275A1|2021-12-02|Hirth serration with secondary profile angle
    EP3789636A2|2021-03-10|Gear transmission
    DE102009041087A1|2011-03-24|Tool e.g. deforming tool, for producing beveloid-tooth work for conical front toothed wheel, has left tooth flank whose profile angle is differ from profile angle of right tooth flank of teeth that produce tooth work at workpiece
    EP1681365B1|2010-09-29|Method of producing highly stressed machine components
    EP2823201B1|2016-06-01|Gear motor series
    WO2008055275A1|2008-05-15|Method for the powder-metallurgical production of a gearwheel
    EP2823199B1|2016-05-04|Gear motor series
    同族专利:
    公开号 | 公开日
    BR112014026660A2|2017-06-27|
    US20180238429A1|2018-08-23|
    CN104220786B|2018-04-20|
    AT512390B1|2013-08-15|
    DE112013002525A5|2015-02-19|
    WO2013170283A1|2013-11-21|
    CN104220786A|2014-12-17|
    US20150096395A1|2015-04-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102005027141A1|2005-06-10|2006-12-21|Gkn Sinter Metals Gmbh|Production of drive shaft incorporating two sets of gear teeth in single piece of material using two processes|
    US2279216A|1939-11-04|1942-04-07|Westinghouse Electric & Mfg Co|Gear and pinion|
    DE19517359C1|1995-05-11|1996-07-04|Klingelnberg Soehne|Bevel gear pair for motor vehicle transmissions|
    US6012350A|1997-04-08|2000-01-11|Jatco Corporation|Internal gear|
    US7153183B2|2004-11-23|2006-12-26|Automotive Components Holdings, Llc|Method and apparatus for lapping gears|
    AT508260B1|2009-05-20|2010-12-15|Miba Sinter Austria Gmbh|GEAR|
    AT510282B1|2011-05-11|2012-03-15|High Tech Coatings Gmbh|COMPONENT WITH AN ADAPTIVE COATING|JP2018084252A|2016-11-21|2018-05-31|マブチモーター株式会社|Gear unit, reduction gear and motor with reduction gear|
    AT520531B1|2018-04-24|2019-05-15|Miba Sinter Austria Gmbh|gear|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50182/2012A|AT512390B1|2012-05-15|2012-05-15|Gear transmission stage|ATA50182/2012A| AT512390B1|2012-05-15|2012-05-15|Gear transmission stage|
    BR112014026660A| BR112014026660A2|2012-05-15|2013-03-18|gear transmission stage|
    DE112013002525.6T| DE112013002525A5|2012-05-15|2013-03-18|Gear transmission stage|
    US14/385,613| US20150096395A1|2012-05-15|2013-03-18|Gear transmission stage|
    PCT/AT2013/050065| WO2013170283A1|2012-05-15|2013-03-18|Gear transmission stage|
    CN201380019550.1A| CN104220786B|2012-05-15|2013-03-18|Gear drive level|
    US15/954,026| US20180238429A1|2012-05-15|2018-04-16|Gear transmission stage|
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