DE102004027284A1 - Chain wheel at a crankshaft of an IC motor, at the flywheel end to drive the chain to the camshaft, is divided into two half-sections with threaded drillings to take screw pin fasteners - Google Patents

Chain wheel at a crankshaft of an IC motor, at the flywheel end to drive the chain to the camshaft, is divided into two half-sections with threaded drillings to take screw pin fasteners Download PDF

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Publication number
DE102004027284A1
DE102004027284A1 DE102004027284A DE102004027284A DE102004027284A1 DE 102004027284 A1 DE102004027284 A1 DE 102004027284A1 DE 102004027284 A DE102004027284 A DE 102004027284A DE 102004027284 A DE102004027284 A DE 102004027284A DE 102004027284 A1 DE102004027284 A1 DE 102004027284A1
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DE
Germany
Prior art keywords
crankshaft
chain
engine wheel
divided
engine
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Withdrawn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
DE102004027284A
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German (de)
Inventor
Karsten Wittek
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.)
FEV Europe GmbH
Original Assignee
FEV Motorentechnik GmbH and Co KG
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 FEV Motorentechnik GmbH and Co KG filed Critical FEV Motorentechnik GmbH and Co KG
Priority to DE102004027284A priority Critical patent/DE102004027284A1/en
Publication of DE102004027284A1 publication Critical patent/DE102004027284A1/en
Withdrawn legal-status Critical Current

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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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/12—Toothed members; Worms with body or rim assembled out of detachable parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
    • F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
    • F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
    • 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
    • F16H55/30—Chain-wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/026—Gear drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/08—Endless member is a chain
    • 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
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • F16H55/46—Split pulleys

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Gears, Cams (AREA)

Abstract

The chain wheel (4) assembly at the crankshaft (1) of an internal combustion motor, to drive the camshaft through a chain, is at the flywheel (3) end with an axial passage opening (8). It is divided into two half-sections (4a,4b) by a dividing plane (6) at right angles to the wheel, with threaded drillings (5) to take the screw pin fasteners (7). The wheel is produced by milling or sintering and is divided by a crack technique.

Description

Die Erfindung betrifft ein Triebwerksrad für eine Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1.The The invention relates to an engine wheel for an internal combustion engine the preamble of claim 1.

Triebwerksräder in Form von Kettenrädern, Zahnrädern oder anderen Rädern, die auf die Kurbelwelle aufgearbeitet werden und eine kostenintensive Stoßbearbeitung erfordern, weil für eine Fräsbearbeitung nicht genügend Fräserauslauf vorhanden ist, werden häufig bei Brennkraftmaschinen verwendet.Engine wheels in shape of sprockets, gears or other wheels, which are worked up on the crankshaft and a costly shock treatment require, because for a milling process not enough Milling Discharge is present, become common used in internal combustion engines.

So wird bei Motorkonstruktionen mit schwungradseitigem Steuertrieb ein Kettenrad zwischen dem Schwungradflansch und dem letzten Hauptlager der Kurbelwelle angeordnet. Einerseits ist man bestrebt, die Zähnezahl des Kettenrades gering zu wählen, so daß die Kettenräder an den Nockenwellen klein ausgeführt werden können und damit wenig Bauraum in Anspruch nehmen. Andererseits weist jedoch der Schwungradflansch im allgemeinen einen größeren Durchmesser als das Kettenrad auf, um die Drehmomentübertragung zum Schwungrad bewerkstelligen zu können.So is used in engine designs with flywheel-side timing gear a sprocket between the flywheel flange and the last main bearing arranged the crankshaft. On the one hand one strives, the number of teeth to choose the sprocket low, So that the sprockets made small on the camshafts can be and thus take up little space. On the other hand, however the flywheel flange generally has a larger diameter than the sprocket on to the torque transfer to accomplish the flywheel.

Aufgabe der Erfindung ist es, ein Triebwerksrad für eine Brennkraftmaschine nach dem Oberbegriff des Anspruchs 1 zu schaffen, das eine kostengünstige Herstellung ermöglicht.task The invention is after an engine wheel for an internal combustion engine after to provide the preamble of claim 1, which is a cost-effective production allows.

Diese Aufgabe wird entsprechend den Merkmalen des Anspruchs 1 gelöst.These The object is achieved according to the features of claim 1.

Auf diese Weise wird ein Triebwerksrad geschaffen, das senkrecht zu einer das Triebwerksrad in zwei Hälften teilenden axialen Zerteilungsebene zwei Aufnahmen jeweils für ein Verbindungselement aufweist, wobei das fertige Triebwerksrad entlang der Zerteilungsebene – insbesondere mittels Cracktechnik – in zwei Hälften geteilt ist.On this way, an engine wheel is created that is perpendicular to an axial dividing plane two dividing the engine wheel into two halves Recordings for each a connecting element, wherein the finished engine wheel along the dividing plane - in particular by cracking technique - in two halves shared.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further Embodiments of the invention are the following description and the dependent claims refer to.

Die Erfindung wird nachstehend anhand eines in den beigefügten Abbildungen dargestellten Ausführungsbeispiels näher erläutert.The The invention will be described below with reference to the attached drawings illustrated embodiment explained in more detail.

1 zeigt perspektivisch und ausschnittweise einen schwungradseitigen Steuertrieb einer Brennkraftmaschine. 1 shows in perspective and detail a flywheel-side timing drive of an internal combustion engine.

2 zeigt einen Schnitt durch das montierte Kettenrad des Steuertriebs von 1. 2 shows a section through the mounted sprocket of the timing drive of 1 ,

Der in 1 dargestellte Steuertrieb umfaßt eine Kurbelwelle 1, die über Lager 2a, b in einem nicht dargestellten Kurbelgehäuse bzw. Leiterrahmen gelagert ist. Am Ende der Kurbelwelle 1 ist auf dieser ein Schwungrad 3 mit Abstand zum Hauptlager 2a der Kurbelwelle 1 befestigt. Zwischen dem Hauptlager 2a und dem Schwungrad 3 ist ein Kettenrad 4 angeordnet, das über eine nicht dargestellte Kette mit wenigstens einem Kettenrad einer ebenfalls nicht dargestellten Nockenwelle abtriebsmäßig gekoppelt ist.The in 1 illustrated timing drive comprises a crankshaft 1 that over stock 2a , b is mounted in a crankcase or lead frame, not shown. At the end of the crankshaft 1 is on this a flywheel 3 with distance to the main camp 2a the crankshaft 1 attached. Between the main camp 2a and the flywheel 3 is a sprocket 4 arranged, which is coupled via a chain not shown with at least one sprocket of a camshaft, also not shown, driven.

Das Kettenrad 4 ist separat von der Kurbelwelle 1 gefertigt, und zwar entweder durch gewöhnliche Fräsbearbeitung oder im Sinterverfahren. Ferner ist das Kettenrad 4 mit zwei durchgehenden Gewindebohrungen 5 versehen, die senkrecht zu einer das Triebwerksrad 4 in zwei Kettenradhälften 4a, 4b teilenden axialen Zerteilungsebene 6 versehen. Das so fertiggestellte Kettenrad ist – insbesondere mittels Cracktechnik – entlang der Zerteilungsebene 6 zerteilt worden. Die beiden Kettenradhälften 4a, 4b werden um die Kurbelwelle 1 gelegt und dann mittels Stiftschrauben 7, die in die Gewindebohrungen 5 eingesetzt werden, miteinander verschraubt. Dabei besitzt die Stiftschraube 7 zweckmäßig Links- und Rechtsgewinde, so daß die beiden Kettenradhälften 4a, 4b durch die Stiftschrauben 7 aneinander gezogen werden. Bei den Stiftschrauben 7 handelt es sich vorzugsweise um solche, die mittels eines Innensechskantschlüssels angezogen werden.The sprocket 4 is separate from the crankshaft 1 manufactured, either by ordinary milling or sintering. Further, the sprocket 4 with two continuous threaded holes 5 provided perpendicular to one of the engine wheel 4 in two sprocket halves 4a . 4b dividing axial fragmentation plane 6 Mistake. The finished sprocket is - in particular by cracking - along the plane of division 6 been parted. The two sprocket halves 4a . 4b be around the crankshaft 1 placed and then using studs 7 in the tapped holes 5 be used, screwed together. It has the stud 7 appropriate left and right-hand thread, so that the two sprocket halves 4a . 4b through the stud bolts 7 be pulled together. With the stud bolts 7 these are preferably those which are attracted by means of a hexagon socket wrench.

Im dargestellten Ausführungsbeispiel besitzt das Kettenrad 4 eine axiale Durchtrittsöffnung 8 zur Aufnahme der Kurbelwelle 1, zwei mit Abstand zueinander angeordnete, umlaufende Zahnspuren 9 und einen Mittelsteg 10, in dem die Gewindebohrungen 5 angebracht sind.In the illustrated embodiment has the sprocket 4 an axial passage opening 8th for receiving the crankshaft 1 , two spaced, surrounding tooth marks 9 and a central pier 10 in which the tapped holes 5 are attached.

Die Drehmomentübertragung zwischen Kurbelwelle 1 und Kettenrad 4 kann sowohl kraftschlüssig als auch formschlüssig erfolgen. Bei kraftschlüssiger Drehmomentübertragung ist eine entsprechende Überdeckung vorzusehen. Bei formschlüssiger Drehmomentübertragung sind geeignete Übertragungselemente, etwa Radialstifte, Paßfedern oder dergleichen, vorzusehen.The torque transmission between crankshaft 1 and sprocket 4 can be done both positively and positively. In non-positive torque transmission, a corresponding overlap is provided. In positive torque transmission suitable transmission elements, such as radial pins, feather keys or the like to provide.

Abgesehen davon, daß ein derartiges Kettenrad 4 kostengünstig herstellbar ist, ist es zusätzlich auch austauschbar und die separate Herstellung erlaubt eine Variantenvielfalt.Apart from the fact that such a sprocket 4 is inexpensive to produce, it is also interchangeable and the separate production allows a variety of variants.

Claims (7)

Triebwerksrad für eine Brennkraftmaschine mit einer axialen Durchtrittsöffnung (8), dadurch gekennzeichnet, daß senkrecht zu einer das Triebwerksrad in zwei Hälften (4a, 4b) teilenden axialen Zerteilungsebene (6) zwei Aufnahmen jeweils für ein Verbindungselement vorgesehen sind und das fertige Triebwerksrad entlang der Zerteilungsebene in zwei Hälften (4a, 4b) geteilt ist.Engine wheel for an internal combustion engine with an axial passage ( 8th ), thereby ge indicates that perpendicular to one of the engine wheel in two halves ( 4a . 4b ) dividing axial fragmentation plane ( 6 ) are provided two receptacles each for a connecting element and the finished engine wheel along the dividing plane in two halves ( 4a . 4b ) is shared. Triebwerksrad nach Anspruch 1, dadurch gekennzeichnet, daß es mittels Cracktechnik zerteilt ist.Engine wheel according to claim 1, characterized in that that it is divided by cracking technique. Triebwerksrad nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Aufnahmen Gewindebohrungen (5) für als Verbindungselemente dienende Stiftschrauben (7) sind.Engine wheel according to claim 1 or 2, characterized in that the receptacles are threaded holes ( 5 ) for studs used as connecting elements ( 7 ) are. Triebwerksrad nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß es ein Kettenrad (4) eines schwungradseitigen Steuertriebs ist.Engine wheel according to one of claims 1 to 3, characterized in that it has a sprocket ( 4 ) is a flywheel-side timing drive. Triebwerksrad nach Anspruch 4, dadurch gekennzeichnet, daß eine kraft- oder formschlüssige Drehmomentübertragung von der Kurbelwelle (1) vorgesehen ist.Engine wheel according to Claim 4, characterized in that a non-positive or positive torque transmission from the crankshaft ( 1 ) is provided. Triebwerksrad nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß es ein unter Fräsbearbeitung hergestelltes Werkstück ist.Engine wheel according to one of claims 1 to 5, characterized in that it one under milling manufactured workpiece is. Triebwerksrad nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß es ein gesintertes Werkstück ist.Engine wheel according to one of claims 1 to 5, characterized in that it a sintered workpiece is.
DE102004027284A 2004-06-04 2004-06-04 Chain wheel at a crankshaft of an IC motor, at the flywheel end to drive the chain to the camshaft, is divided into two half-sections with threaded drillings to take screw pin fasteners Withdrawn DE102004027284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102004027284A DE102004027284A1 (en) 2004-06-04 2004-06-04 Chain wheel at a crankshaft of an IC motor, at the flywheel end to drive the chain to the camshaft, is divided into two half-sections with threaded drillings to take screw pin fasteners

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DE102004027284A DE102004027284A1 (en) 2004-06-04 2004-06-04 Chain wheel at a crankshaft of an IC motor, at the flywheel end to drive the chain to the camshaft, is divided into two half-sections with threaded drillings to take screw pin fasteners

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DE102004027284A1 true DE102004027284A1 (en) 2005-12-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513965A (en) * 2011-12-03 2012-06-27 锐展(铜陵)科技有限公司 Assembling fixture for camshaft sprocket of engine
CN107859728A (en) * 2017-09-30 2018-03-30 通力电梯有限公司 Chain wheel assembly including its escalator handrail system and chain wheel drive system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2308000A1 (en) * 1973-02-17 1974-09-05 Maschf Augsburg Nuernberg Ag MULTI-PIECE GEAR
EP0631069A1 (en) * 1993-06-24 1994-12-28 American Longwall Face Conveyors, Inc. Split sprocket and retainer assembly
US5848947A (en) * 1996-08-23 1998-12-15 Giddings & Lewis, Inc. Split power transfer member
US6125713A (en) * 1998-12-03 2000-10-03 Partco, Inc. Method and apparatus for repairing a crankshaft
WO2001044694A1 (en) * 1998-05-26 2001-06-21 Murrietta Cecil R Split sprocket device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2308000A1 (en) * 1973-02-17 1974-09-05 Maschf Augsburg Nuernberg Ag MULTI-PIECE GEAR
EP0631069A1 (en) * 1993-06-24 1994-12-28 American Longwall Face Conveyors, Inc. Split sprocket and retainer assembly
US5848947A (en) * 1996-08-23 1998-12-15 Giddings & Lewis, Inc. Split power transfer member
WO2001044694A1 (en) * 1998-05-26 2001-06-21 Murrietta Cecil R Split sprocket device
US6125713A (en) * 1998-12-03 2000-10-03 Partco, Inc. Method and apparatus for repairing a crankshaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513965A (en) * 2011-12-03 2012-06-27 锐展(铜陵)科技有限公司 Assembling fixture for camshaft sprocket of engine
CN102513965B (en) * 2011-12-03 2014-01-01 锐展(铜陵)科技有限公司 Assembling fixture for camshaft sprocket of engine
CN107859728A (en) * 2017-09-30 2018-03-30 通力电梯有限公司 Chain wheel assembly including its escalator handrail system and chain wheel drive system

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