DE3247026A1 - Elastic roller tappet - Google Patents

Elastic roller tappet

Info

Publication number
DE3247026A1
DE3247026A1 DE19823247026 DE3247026A DE3247026A1 DE 3247026 A1 DE3247026 A1 DE 3247026A1 DE 19823247026 DE19823247026 DE 19823247026 DE 3247026 A DE3247026 A DE 3247026A DE 3247026 A1 DE3247026 A1 DE 3247026A1
Authority
DE
Germany
Prior art keywords
roller
role
roller tappet
tappet
end faces
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Withdrawn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
DE19823247026
Other languages
German (de)
Inventor
Max 5090 Leverkusen Matzen
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Priority to DE19823247026 priority Critical patent/DE3247026A1/en
Publication of DE3247026A1 publication Critical patent/DE3247026A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
    • 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
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/06—Cam-followers
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • F01L2305/02—Mounting of rollers
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/18—Camshafts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

In order, in roller tappets, to provide the elasticity of the roller which is required under high loads, it is proposed, when circular-cylindrical cylinders are used as rollers, to provide their end faces with a coaxially arranged depression, in order thereby to provide the elasticity of the roller-edge region. <IMAGE>

Description

Elastischer Rollenstößel Elastic roller tappet

Die Erfindung bezieht sich auf eine Vorrichtung der im Oberbegriff des ersten Anspruchs angegebenen Art.The invention relates to a device of the preamble of the first claim specified type.

Es ist bereits bekannt, um Spannungsspitzen an den Enden von zylindrischen Rollen abzubauen, diese Rollen auf ihrem Umfang ballig auszuführen. Dadurch wird eine gleichmäßige Spannungsverteilung und eine erhöhte Belastbarkeit der Rolle erreicht.It is already known to avoid voltage peaks at the ends of cylindrical Dismantle roles, these roles to perform spherical on their circumference. This will an even distribution of tension and an increased load capacity of the role is achieved.

Nachteilig bei der bekannten Ausführung ist jedoch, daß die Herstellung derartiger Rollen sehr schwierig ist, da hohe Anforderungen an die Toleranzen gestellt werden.The disadvantage of the known design, however, is that the production such roles is very difficult because high demands are made on the tolerances will.

Aufgabe der vorliegenden Erfindung ist es deshalb, eine gleichmäßige Spannungsverteilung und dadurch größtmögliche Belastbarkeit der Rolle zu erreichen, ohne diese auf ihrem Umfang ballig ausführen zu müssen.The object of the present invention is therefore to provide a uniform To distribute the tension and thereby achieve the greatest possible load-bearing capacity of the role, without having to make them spherical on their circumference.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des ersten Anspruchs gelöst. Der Vorteil dieser Lösung ist darin zu sehen, daß in Abhängigkeit der Belastung der Rolle eine entsprechende Nachgiebigkeit erreicht werden kann. Dies geschieht gemäß der Erfindung dadurch, daß die von der Ansenkung nicht er- faßten Randbereiche der Rolle stärker oder schwächer gewählt werden. Ebenso kann durch Veränderung der Tiefe der Ansenkung die Nachgiebigkeit der Rollenenden beeinflußt werden. Darüberhinaus ist die Rolle einfach herzustellen, insbesondere, wenn die Ansenkung als koaxiale Ausdrehung auf den Stirnseiten der Rolle ausgeführt wird.According to the invention, this object is achieved by the characterizing features of the first claim solved. The advantage of this solution is that in Depending on the load on the role, a corresponding flexibility is achieved can be. This is done according to the invention in that the countersink not he gripped edge areas of the role selected stronger or weaker will. Likewise, by changing the depth of the countersink, the resilience the end of the roll can be influenced. In addition, the role is easy to manufacture, especially if the countersink as a coaxial recess on the end faces of the Role is executed.

Aufgrund der -dadurch erreichten erhöhten Belastbarkeit können bei der Verwendung der Rolle in einem Rollenstößel in einer Einspritzpumpe höhere Spitzendrücke erzeugt werden, so daß kürzere Förderwinkel der Einspritzpumpen verwirklicht werden können. Darüberhinaus ist bei achslosen Rollen deren Führung im Rollenstößel einfach und paßgenau herzustellen.Due to the increased load capacity achieved as a result, the use of the roller in a roller tappet in an injection pump has higher peak pressures are generated, so that shorter delivery angles of the injection pumps can be realized can. In addition, it is easy to guide them in the roller tappet in the case of shaftless rollers and to manufacture precisely.

Im folgenden wird die Erfindung anhand eines ausgewählten Beispiels näher erläutert.In the following the invention is illustrated by means of a selected example explained in more detail.

In Fig. 1 ist eine Seitenansicht und in Fig. 2 eine teilweise gebrochene Frontansicht der Rolle mit einem Rollenstößel dargestellt. Die Rolle 1 wird in einem Rollenstößel 2 geführt, wobei der Rollenstößel 2 die Rolle zu mehr als der Hälfte ihres Durchmessers umgreift. Gegen axiale Verschiebung der Rolle wird diese durch an den Stirnseiten angeordnete Stifte 3 und 4, die in dem Rollenstößel 2 eingelassen sind, gehalten. Die Rolle 1 weist auf ihren beiden Stirnseiten je eine Ansenkung 5 auf, welche als koaxiale Ausdrehung aufgebaut ist. Die Stärke des Kragens 6 an den Stirnseiten der Rolle 1 ist abhängig von der Belastung der Rolle und der geforderten Elastizität ebenso wie die Vertiefung der Ausdrehung 5. Unterhalb der Rolle 1 ist noch ein Teil des die Rolle 1 und des Rollenstößels 2 antreibenden Nockens 7 dargestellt.In Fig. 1 is a side view and in Fig. 2 is a partially broken one Front view of the roller shown with a roller tappet. The role 1 is in one Roller tappet 2 guided, the roller tappet 2 more than half of the role encompasses their diameter. Against axial displacement of the role this is through Pins 3 and 4 arranged on the end faces, which are embedded in the roller tappet 2 are held. The roller 1 has a countersink on each of its two end faces 5, which is constructed as a coaxial recess. The strength of the collar 6 at the end faces of the role 1 depends on the load on the role and the required Elasticity as well as the recess of the recess 5. Below the roller 1 is Part of the cam 7 driving the roller 1 and the roller tappet 2 is also shown.

- Leerseite -- blank page -

Claims (2)

P a t e n t a n s p r ü c h e Rolle, insbesondere kreiszylindrische Walze für einen Rollenstößel für den Antrieb eines Pumpenkolbens einer Einspritzpumpe für Brennkraftmaschinen, wobei die Rolle im Rollenstößel über geeignete Lager- und Führungseinrichtungen gehalten ist, dadurch gekennzeichnet, daß die beiden Stirnseiten der Rolle Ansenkungen aufweisen, dergestalt, daß eine der Belastung der Rolle entsprechende elastische Nachgiebigkeit an deren Enden entsteht. P a t e n t a n s p r ü c h e roll, especially circular cylindrical Roller for a roller tappet for driving a pump piston of an injection pump for internal combustion engines, the role in the roller tappet via suitable bearing and Guide devices is held, characterized in that the two end faces the roller have countersinks, such that one of the load on the roller corresponding elastic resilience is created at the ends. 2. Rolle nach Anspruch 1, dadurch gekennzeichnet, daß die Ansenkung (5) als koaxiale Ausdrehung bis in den Randbereich der Rolle (1) ausgeführt ist.2. Roller according to claim 1, characterized in that the countersink (5) is designed as a coaxial recess up to the edge area of the roller (1).
DE19823247026 1982-12-18 1982-12-18 Elastic roller tappet Withdrawn DE3247026A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823247026 DE3247026A1 (en) 1982-12-18 1982-12-18 Elastic roller tappet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823247026 DE3247026A1 (en) 1982-12-18 1982-12-18 Elastic roller tappet

Publications (1)

Publication Number Publication Date
DE3247026A1 true DE3247026A1 (en) 1984-06-20

Family

ID=6181124

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823247026 Withdrawn DE3247026A1 (en) 1982-12-18 1982-12-18 Elastic roller tappet

Country Status (1)

Country Link
DE (1) DE3247026A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027135A2 (en) * 1994-04-02 1995-10-12 Bosch Gmbh Robert Fuel injection pump
EP1318278A3 (en) * 2001-12-04 2004-03-31 Delphi Technologies, Inc. Roller finger follower
DE102006028348B3 (en) * 2006-06-20 2007-10-31 Siemens Ag Rolling bearing device has locking element arranged so that in cavity of cylinder-shaped element it is coupled with positive locking with regard to axial and rotational direction in regard to center axis of cylinder-shaped element
WO2010118903A1 (en) * 2009-04-16 2010-10-21 Robert Bosch Gmbh Piston pump having cam drive, particularly a fuel pump
DE102009056303A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
DE102009056305A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg Roller plunger, particularly for high-pressure fuel pump or for valve train of quality-or quantity controlled internal combustion engine, has housing which is projected under roller by bridge piece
DE102009056304A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg Roller tappet i.e. counter runner, for e.g. valve drive of quantity-regulated internal-combustion engine of lorry, has roller secured from front by retaining unit, which overlaps surface of roller and turns indirectly from front
DE102009056306A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
EP2853696A1 (en) * 2013-09-27 2015-04-01 Aktiebolaget SKF Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method
CN104514656A (en) * 2013-09-27 2015-04-15 Skf公司 Mechanical system, injection pump and valve actuator comprising such system and manufacturing method
EP2875239A1 (en) * 2012-07-18 2015-05-27 Continental Automotive GmbH Pushrod arrangement
US9528397B2 (en) * 2014-11-27 2016-12-27 Aktiebolaget Skf Mechanical system forming a cam follower or a rocker arm and method for manufacturing such a mechanical system
DE102009003097B4 (en) * 2009-05-14 2018-02-08 Robert Bosch Gmbh High-pressure pump, in particular radial piston pump, with at least one plunger body, a rotatable roller shoe, a roller and an axial contact point for the roller, which is arranged at a distance from the axis of rotation of the roller

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735313A (en) * 1956-02-21 Dickson
DE1055895B (en) * 1957-04-27 1959-04-23 Motoren Werke Mannheim Ag Roller tappet
US2947581A (en) * 1955-11-17 1960-08-02 Fafnir Bearing Co Relatively rolling elements
DE2340074A1 (en) * 1973-08-08 1975-02-20 Kloeckner Humboldt Deutz Ag CYLINDRICAL TAPPET

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735313A (en) * 1956-02-21 Dickson
US2947581A (en) * 1955-11-17 1960-08-02 Fafnir Bearing Co Relatively rolling elements
DE1055895B (en) * 1957-04-27 1959-04-23 Motoren Werke Mannheim Ag Roller tappet
DE2340074A1 (en) * 1973-08-08 1975-02-20 Kloeckner Humboldt Deutz Ag CYLINDRICAL TAPPET

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027135A2 (en) * 1994-04-02 1995-10-12 Bosch Gmbh Robert Fuel injection pump
WO1995027135A3 (en) * 1994-04-02 1995-11-09 Robert Bosch Gmbh Fuel injection pump
EP1318278A3 (en) * 2001-12-04 2004-03-31 Delphi Technologies, Inc. Roller finger follower
US6758180B2 (en) 2001-12-04 2004-07-06 Delphi Technologies, Inc. Pinless roller finger follower
DE102006028348B3 (en) * 2006-06-20 2007-10-31 Siemens Ag Rolling bearing device has locking element arranged so that in cavity of cylinder-shaped element it is coupled with positive locking with regard to axial and rotational direction in regard to center axis of cylinder-shaped element
WO2007147654A1 (en) * 2006-06-20 2007-12-27 Continental Automotive Gmbh Roller seating device
US8522739B2 (en) 2006-06-20 2013-09-03 Continental Automotive Gmbh Roller seating device
WO2010118903A1 (en) * 2009-04-16 2010-10-21 Robert Bosch Gmbh Piston pump having cam drive, particularly a fuel pump
DE102009003097B4 (en) * 2009-05-14 2018-02-08 Robert Bosch Gmbh High-pressure pump, in particular radial piston pump, with at least one plunger body, a rotatable roller shoe, a roller and an axial contact point for the roller, which is arranged at a distance from the axis of rotation of the roller
DE102009056306A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
DE102009056304A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg Roller tappet i.e. counter runner, for e.g. valve drive of quantity-regulated internal-combustion engine of lorry, has roller secured from front by retaining unit, which overlaps surface of roller and turns indirectly from front
WO2011064044A1 (en) 2009-11-30 2011-06-03 Schaeffler Technologies Gmbh & Co. Kg Roller tappet
EP2333337A2 (en) 2009-11-30 2011-06-15 Schaeffler Technologies AG & Co. KG Roller tappet
DE102009056305A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg Roller plunger, particularly for high-pressure fuel pump or for valve train of quality-or quantity controlled internal combustion engine, has housing which is projected under roller by bridge piece
US8607754B2 (en) 2009-11-30 2013-12-17 Schaeffler Technologies AG & Co. KG Roller tappet
DE102009056303A1 (en) 2009-11-30 2011-06-01 Schaeffler Technologies Gmbh & Co. Kg roller plunger
EP2875239A1 (en) * 2012-07-18 2015-05-27 Continental Automotive GmbH Pushrod arrangement
EP2875239B1 (en) * 2012-07-18 2019-01-23 Continental Automotive GmbH Pushrod arrangement
EP2853696A1 (en) * 2013-09-27 2015-04-01 Aktiebolaget SKF Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method
CN104514656A (en) * 2013-09-27 2015-04-15 Skf公司 Mechanical system, injection pump and valve actuator comprising such system and manufacturing method
US9772022B2 (en) 2013-09-27 2017-09-26 Aktiebolaget Skf Mechanical system, injection pump and valve actuator comprising such a mechanical system and manufacturing method
US9528397B2 (en) * 2014-11-27 2016-12-27 Aktiebolaget Skf Mechanical system forming a cam follower or a rocker arm and method for manufacturing such a mechanical system

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