DE2848206A1 - Meshing pair of lubricated gears - have series of recesses across tooth flanks for part of tooth height - Google Patents

Meshing pair of lubricated gears - have series of recesses across tooth flanks for part of tooth height

Info

Publication number
DE2848206A1
DE2848206A1 DE19782848206 DE2848206A DE2848206A1 DE 2848206 A1 DE2848206 A1 DE 2848206A1 DE 19782848206 DE19782848206 DE 19782848206 DE 2848206 A DE2848206 A DE 2848206A DE 2848206 A1 DE2848206 A1 DE 2848206A1
Authority
DE
Germany
Prior art keywords
tooth
gear
gears
depressions
recesses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19782848206
Other languages
German (de)
Inventor
Dietrich Dipl Ing Schuldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE19782848206 priority Critical patent/DE2848206A1/en
Publication of DE2848206A1 publication Critical patent/DE2848206A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02Toothed members; Worms
    • F16H55/17Toothed wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/042Guidance of lubricant
    • F16H57/043Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F16H57/0431Means for guiding lubricant directly onto a tooth surface or to foot areas of a gear, e.g. by holes or grooves in a tooth flank
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/048Type of gearings to be lubricated, cooled or heated
    • F16H57/0493Gearings with spur or bevel gears

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rotary Pumps (AREA)

Abstract

The intermeshing pair of lubricated gears are for use in a gearbox, gear pump etc. One or both gears in the pair have on one or both flanks of each tooth (10) a number of recesses (14) over the entire width of the tooth and for part of its height, partic. the middle part. The recesses in the gear tooth flanks can be in the form of a series of rows of transverse grooves one above the other, or alternatively rows of drillings, those in the individual rows being offset from each other.

Description

Im Eingriff miteinander stehende ZahnräderGear wheels in mesh with one another

Stand der Technik Die Erfindung geht aus von Maschinen, die im Eingriff miteinander stehende Zahnräder aufweisen, wie Zahnradgetriebe, Zahnradpumpen, Zahnradmotoren und andere. Es hat sich auch gezeigt, daß dort, wo die im Eingriff miteinander stehenden Zahnräder geschmiert werden, die wechselnden Gleit-und Wälzbedingungen zwischen zwei Zahnflanken zu wechselnden Schmierfilmdicken und damit zu einer schwingenden Relativbewegung der im Eingriff befindlichen Zahnräder führen. Dieser Effekt wirkt sich nachteilig auf das Geräuschverhalten des Zahnradgetriebes aus, was besonders auch für Zahnradpumpen gilt.PRIOR ART The invention is based on machines that are engaged have interconnected gears, such as gear drives, gear pumps, gear motors and other. It has also been shown that where the are in engagement with each other Gears are lubricated, the changing sliding and rolling conditions between two tooth flanks to alternating lubricant film thicknesses and thus to a vibrating one Lead relative movement of the meshing gears. This effect works adversely affect the noise behavior of the gear transmission, which is particularly also applies to gear pumps.

Vorteile der Erfindung Die erfindungsgemäße Anordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß der Schmierfilm zwischen zwei sich im Eingriff befindlichen Zahnflanken möglichst konstant gehalten wird, um damit eine Geräuschminderung zu erreichen. Dies hat außerdem den Vorteil, daß die Drehgeschwindigkeit beider im Eingriff bebefindlichen Zahnräder konstant bleibt, d.h. Beschleunigungsspitzen mit daraus folgenden Zahn- bzw. Zahnradschwingungen bleiben aus. Dasselbe gilt für Druckspitzen im Schmierfilm und der damit verbundenen Geräuscherzeugung.Advantages of the invention The arrangement according to the invention with the characterizing Features of the main claim has the advantage that the lubricating film between two tooth flanks that are in mesh are kept as constant as possible, in order to achieve a noise reduction. This also has the advantage that the speed of rotation of both gears in mesh remains constant, i.e. acceleration peaks with resulting tooth or gear vibrations stay out. The same applies to pressure peaks in the lubricating film and the associated ones Noise generation.

Durch die in den Unteransprüchen aufgeführten Merkmale sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Maßnahmen möglich.The features listed in the subclaims are advantageous Further training and improvements to the measures specified in the main claim are possible.

Zeichnung Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 zwei im Eingriff befindliche Zahnräder, Figuren 2 und 3 die Zahnflanken zweier Zahnräder.Drawing An embodiment of the invention is shown in the drawing and explained in more detail in the following description. It show figure 1 two meshing gears, Figures 2 and 3 the tooth flanks of two Gears.

t-eschreibung des Ausführungsbeispiels Die Figur 1 zeigt zwei Zähne 10 und 11 zweier im Eingriff befindlichen Zahnräder 12, 13. Das Zahnrad 13 ist das treibende Rad, was durch den Pfeil P gekennzeichnet ist.Description of the exemplary embodiment FIG. 1 shows two teeth 10 and 11 of two meshing gears 12, 13. The gear 13 is that driving wheel, which is indicated by the arrow P.

An der Zahnflanke 10' des Zahns 10 sind in einem mittleren Bereich und über die gesamte Breite b des Zahnes verlaufend eine größere Anzahl von Vertiefungen 14 ausgebildet, siehe hierzu die Figuren 2 und 3. Im Falle des Ausführungsbeispieles nach Figur 2 bestehen die Vertiefungen aus Bohrungen 14' mit geringer Tiefe, die in mehreren übereinanderliegenden Reihen angeordnet sind, von Reihe zu Reihe jedoch gegeneinander versetzt sind. Die Vertiefungen befinden sich in einem Bereich, in dem der Schmierfilm dann - wenn keine besonderen Maßnahmen getroffen sind - dicker ist als in anderen Bereichen; dies ist im allgemeinen der mittlere Bereich bezogen auf die Zahnhöhe h.On the tooth flank 10 'of the tooth 10 are in a middle area and a larger number of recesses running over the entire width b of the tooth 14, see Figures 2 and 3. In the case of the embodiment According to Figure 2, the wells consist of bores 14 'with a small depth, the are arranged in several superimposed rows, but from row to row are offset from one another. The wells are in an area in the lubricating film then - if no special measures are taken - thicker is than in other areas; this is generally related to the middle range to the tooth height h.

Im usführungsbeispiel nach der Figur 3 bestehen die Vertiefungen 14' aus länglichen Querriefen, die ebenfalls in mehreren übereinanderliegenden Reihen angeordnet und zueinander versetzt sind - d.h. so wie im Ausführungsbeispiel nach der Figur 2.In the exemplary embodiment according to FIG. 3, there are depressions 14 ' from elongated cross-grooves, which are also in several superimposed rows are arranged and offset from one another - i.e. as in the exemplary embodiment according to of Figure 2.

Wesentlich ist, daß die Vertiefungen so gestaltet sind,daß beispielsweise bei der Anwendung in einer Zahnradpumpe deren Dichtheit und stoßfreies Gleiten der Zahnflanken aufeinander gewährleistet bleiben. Selbstverständlich sind auch noch andere Vertiefungen oder eine Mischung von Bohrungen und Querriefen denkbar.It is essential that the wells are designed so that, for example when used in a gear pump, its tightness and smooth sliding of the Tooth flanks remain guaranteed on each other. Of course are also still other depressions or a mixture of bores and transverse grooves are conceivable.

Zweckmäßigerweise sind die Vertiefungen nur an einer der beiden miteinander im Eingriff stehenden Zahnflanken ausgebildet, wodurch die Gleiteigenschaften besser sind als dann, wenn an beiden Zahnflanken solche Vertiefungen vorhanden wären. Selbstverständlich sind die beschriebenen Vertiefungen an jedem Zahn eines Zahnrads ausgebildet. Sie können auch am treibenden Rad vorgesehen sein.The depressions are expediently only connected to one another on one of the two engaging tooth flanks formed, whereby the sliding properties better are than if such depressions were present on both tooth flanks. Of course the recesses described are formed on each tooth of a gear. she can also be provided on the driving wheel.

Claims (6)

Ansprüche Im Eingriff miteinander stehende geschmierte Zahnräder von Zahnradgetrieben, Zahnradpumpen und anderen, dadurch gekennzeichnet, daß an wenigstens einer Zahnflanke (10') jedes Zahnes (10) wenigstens eines Zahnrads einer Zahnradpaarung mehrere Vertiefungen (14) ausgebildet sind, die sich im wesentlichen über die gesamte Zahnbreite (b) erstrecken, aber nur über einen Teilbereich der Zahnhöhe (h), insbesondere über einen etwa mittleren Bereich.Claims Intermeshing lubricated gears from Gear drives, gear pumps and others, characterized in that at least a tooth flank (10 ') of each tooth (10) of at least one gear of a gear pair a plurality of depressions (14) are formed which extend essentially over the entire Tooth width (b) extend, but only over part of the tooth height (h), in particular over an approximately medium range. 2. Zahnräder nach Anspruch 1, dadurch gekennzeichnet, daß die Vertiefungen als in mehreren übereinanderliegenden Reihen querverlaufende Riefen (14") ausgebildet sind.2. Gears according to claim 1, characterized in that the depressions as grooves (14 ") running transversely in several rows one above the other are. 3. Zahnräder nach Anspruch 1, dadurch gekennzeichnet, daß die Vertiefungen als in mehreren übereinanderliegenden Reihen angeordnete Bohrungen (14') ausgebildet sind.3. Gears according to claim 1, characterized in that the depressions designed as bores (14 ') arranged in several rows one above the other are. 4. Zahnräder nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Vertiefungen in den einzelnen Reihen zueinander versetzt sind.4. Gear wheels according to one of claims 1 to 3, characterized in that that the wells in the individual rows are offset from one another. 5. Zahnräder nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Vertiefungen nur geringe Tiefe aufweisen.5. Gear wheels according to one of claims 1 to 4, characterized in that that the depressions have only a small depth. 6. Zahnräder nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Vertiefungen jeweils nur an einer Flanke eines Zahnes ausgebildet sind, entweder des treibenden oder des getriebenen Zahnrads.6. Gear wheels according to one of claims 1 to 5, characterized in that that the depressions are only formed on one flank of a tooth, either the driving or the driven gear.
DE19782848206 1978-11-07 1978-11-07 Meshing pair of lubricated gears - have series of recesses across tooth flanks for part of tooth height Withdrawn DE2848206A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782848206 DE2848206A1 (en) 1978-11-07 1978-11-07 Meshing pair of lubricated gears - have series of recesses across tooth flanks for part of tooth height

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782848206 DE2848206A1 (en) 1978-11-07 1978-11-07 Meshing pair of lubricated gears - have series of recesses across tooth flanks for part of tooth height

Publications (1)

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DE2848206A1 true DE2848206A1 (en) 1980-05-14

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DE19782848206 Withdrawn DE2848206A1 (en) 1978-11-07 1978-11-07 Meshing pair of lubricated gears - have series of recesses across tooth flanks for part of tooth height

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622569A1 (en) * 1993-04-28 1994-11-02 Tochigi Fuji Sangyo Kabushiki Kaisha Differential gearing
US5713812A (en) * 1995-09-19 1998-02-03 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5728025A (en) * 1995-04-18 1998-03-17 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5728024A (en) * 1995-03-16 1998-03-17 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5749803A (en) * 1995-09-13 1998-05-12 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5823907A (en) * 1996-05-30 1998-10-20 Tochigi Fuji Sangyo Kabushiki Kaisha Access hole for differential apparatus
US5839986A (en) * 1996-07-23 1998-11-24 Tochigi Fuji Sangyo Kabushiki Kaisha Differential device with disconnect
US5904634A (en) * 1996-10-30 1999-05-18 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus with additional speed increasing gear and speed decreasing gear selectively engageable with a single output shaft
DE102008040641A1 (en) * 2008-07-23 2010-01-28 Zf Lenksysteme Gmbh Gear rack, particularly for vehicle steering, comprises gear rack rear part opposite to toothing, where gear rack rear part has storage depots for receiving lubricant
EP1767818A3 (en) * 2005-09-26 2010-06-23 Robert Bosch Gmbh Toothed wheel
CN101878382A (en) * 2007-11-30 2010-11-03 通用电气公司 Textured surfaces for gears
DE102010038438A1 (en) * 2010-07-27 2012-02-02 Bayerische Motoren Werke Aktiengesellschaft Gear wheel e.g. crown wheel, for use in e.g. axle gear box, of vehicle i.e. passenger car, has teeth distributed in circumferential direction and comprising tooth flank with flank surface, and microstructures provided on surface in sections
DE102013010028A1 (en) * 2013-06-17 2014-12-18 Sew-Eurodrive Gmbh & Co Kg Gear part and gear with toothing part
DE102016223058A1 (en) * 2016-11-22 2018-05-24 Bayerische Motoren Werke Aktiengesellschaft Gear pair with surface geared gear, geared pair gear and method of manufacturing gear
EP4425013A1 (en) * 2023-02-28 2024-09-04 Flender GmbH Tooth for a toothed torque transmission assembly and method for producing such a tooth

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622569A1 (en) * 1993-04-28 1994-11-02 Tochigi Fuji Sangyo Kabushiki Kaisha Differential gearing
US5556351A (en) * 1993-04-28 1996-09-17 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5728024A (en) * 1995-03-16 1998-03-17 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5728025A (en) * 1995-04-18 1998-03-17 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5749803A (en) * 1995-09-13 1998-05-12 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5713812A (en) * 1995-09-19 1998-02-03 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus
US5823907A (en) * 1996-05-30 1998-10-20 Tochigi Fuji Sangyo Kabushiki Kaisha Access hole for differential apparatus
US5839986A (en) * 1996-07-23 1998-11-24 Tochigi Fuji Sangyo Kabushiki Kaisha Differential device with disconnect
US5904634A (en) * 1996-10-30 1999-05-18 Tochigi Fuji Sangyo Kabushiki Kaisha Differential apparatus with additional speed increasing gear and speed decreasing gear selectively engageable with a single output shaft
EP1767818A3 (en) * 2005-09-26 2010-06-23 Robert Bosch Gmbh Toothed wheel
CN101878382A (en) * 2007-11-30 2010-11-03 通用电气公司 Textured surfaces for gears
DE102008040641A1 (en) * 2008-07-23 2010-01-28 Zf Lenksysteme Gmbh Gear rack, particularly for vehicle steering, comprises gear rack rear part opposite to toothing, where gear rack rear part has storage depots for receiving lubricant
DE102010038438A1 (en) * 2010-07-27 2012-02-02 Bayerische Motoren Werke Aktiengesellschaft Gear wheel e.g. crown wheel, for use in e.g. axle gear box, of vehicle i.e. passenger car, has teeth distributed in circumferential direction and comprising tooth flank with flank surface, and microstructures provided on surface in sections
DE102013010028A1 (en) * 2013-06-17 2014-12-18 Sew-Eurodrive Gmbh & Co Kg Gear part and gear with toothing part
WO2014202170A1 (en) * 2013-06-17 2014-12-24 Sew-Eurodrive Gmbh & Co. Kg Toothed part and gear with toothed part
DE102016223058A1 (en) * 2016-11-22 2018-05-24 Bayerische Motoren Werke Aktiengesellschaft Gear pair with surface geared gear, geared pair gear and method of manufacturing gear
EP4425013A1 (en) * 2023-02-28 2024-09-04 Flender GmbH Tooth for a toothed torque transmission assembly and method for producing such a tooth
WO2024179937A1 (en) 2023-02-28 2024-09-06 Flender Gmbh Tooth for a toothed torque transmission assembly, and method for manufacturing such a tooth

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