WO2012013376A1 - Poussoir à coupelle et procédé pour sa fabrication - Google Patents

Poussoir à coupelle et procédé pour sa fabrication Download PDF

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Publication number
WO2012013376A1
WO2012013376A1 PCT/EP2011/057855 EP2011057855W WO2012013376A1 WO 2012013376 A1 WO2012013376 A1 WO 2012013376A1 EP 2011057855 W EP2011057855 W EP 2011057855W WO 2012013376 A1 WO2012013376 A1 WO 2012013376A1
Authority
WO
WIPO (PCT)
Prior art keywords
cup
tappet
combustion engine
internal combustion
outside
Prior art date
Application number
PCT/EP2011/057855
Other languages
German (de)
English (en)
Inventor
Günter EISENHARDT
Original Assignee
Schaeffler Technologies Gmbh & 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 Schaeffler Technologies Gmbh & Co. Kg filed Critical Schaeffler Technologies Gmbh & Co. Kg
Priority to CN201180036409.3A priority Critical patent/CN103026012B/zh
Publication of WO2012013376A1 publication Critical patent/WO2012013376A1/fr

Links

Classifications

    • 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
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/84—Making other particular articles other parts for engines, e.g. connecting-rods
    • 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

Definitions

  • the invention relates to a tappet for an internal combustion engine and to a method for the production thereof.
  • the tappet has a tappet housing with a hollow cylindrical cup shirt and a cup bottom on one side closing cup bottom on which the cup shirt is formed by means of chipless cold forming.
  • the outer side of the cup base serves as a contact surface for a tappet hubbeauf waveden the cam of the internal combustion engine, and the outside of the cup top serves as a contact surface for a cup tappet in the stroke direction overlying guide bore of the internal combustion engine.
  • Such tappets are typically used in the gas exchange valve drive of an internal combustion engine to transmit the cam lobe of a camshaft in an opening movement of the associated gas exchange valve.
  • the bucket tappet as a tappet for the cam of a fuel injection pump to transmit the survey of the pump cam on the plunger of the injection pump.
  • it is mechanically highly stressed components, the first, the Hertz occurring in cam contact 'rule pressures sufficiently comparable to endure little wear and sufficient wear to another and must be stored noise in its guide bore.
  • the present invention is based on the object, a bucket tappet of the type mentioned and a method for its production in each case with regard to further reduced manufacturing costs.
  • the solution of this object is the device side of the characterizing features of claim 1 and the method side of the characterizing features of claim 4. Accordingly, the outside of the plunger housing to be machined only on the outside of the cup skirt. In other words, the end and typically abrasive machining of the plunger outer side is to be limited to the guide contact surface on the cup shirt, while the cam contact surface on the outside of the cup bottom is not subjected to machining. The geometry and surface roughness of the cam contact surface required for the low-wear cam contact are then set only via the non-cutting cold forming process of the tappet housing with a suitably adapted forming tool and optionally via the subsequent heat treatment of the tappet housing.
  • the cold forming process is particularly preferably the deep drawing of the tappet housing, which is known per se, from a sheet steel plate. Alternatively, it may also be a die-pressed ram housing.
  • Tests by the applicant with such bucket tappets have surprisingly shown that the previously customary, fine machining of the cam contact surface is not required in each case to the surface wear of the cam contact surface and / or the cam sufficiently small hold. In this respect, a refined, ie comparatively rough, surface accuracy is often sufficient, which can also be represented with a correspondingly adapted forming tool. Contrary to many years of manufacturing practice, it is thus possible in favor of a considerable cost saving to dispense with the grinding process of the cam contact surface with a comparable functional behavior of the bucket tappet.
  • the tappets should consist exclusively of the plunger housing.
  • it is a so-called mechanical plunger, which consists of a single component.
  • conditional valve clearance in the gas exchange valve drive can be adjusted in this case by individual Zusortierung a tappet with a corresponding selected thickness of the cup bottom.
  • Such a tappet is basically known from DE 198 15 790 B4.
  • a grinding of the inside of the cup bottom namely be provided on the contact surface to the shaft of the gas exchange valve.
  • they may be multi-piece bucket tappets and, in particular, those provided with a hydraulic valve clearance compensation element for automatic valve lash adjustment.
  • Figure 1 shows a gas exchange valve drive with mechanical bucket tappet in
  • FIG. 2 shows a hydraulic tappet with a cylindrical cam contact surface in a cutaway perspective view.
  • Figure 1 discloses a trained as a bucket tappet gas exchange valve drive an internal combustion engine with mechanical valve clearance compensation.
  • the mechanical bucket tappet 1 consists exclusively of a cup-shaped tappet housing 2, which is made in one piece by chipless cold forming of a steel blank and here by deep drawing a sheet metal blank.
  • the plunger housing 2 is composed of a hollow cylindrical cup shirt 3 and a cup base 4, to which the cup shirt 3 is formed and which closes the cup 3 on one side.
  • the outside of the cup base 4 serves as a contact surface 5 for a cam 6, the elevation of the tappets 1 in an opening movement of the spring-loaded in the closing direction gas exchange valve 7 is transmitted.
  • the outer side of the cup 3 serves as a contact surface 8 for a cup tappet 1 in the stroke direction overlapping guide bore 9 of the internal combustion engine.
  • the inside of the cup base 4 is provided with an elevation 10 extending in the axial direction of the gas exchange valve 7, which contacts the shaft of the gas exchange valve 7 at the end.
  • the valve clearance adjustment is carried out by sorting a tappet 1 with a height of the elevation 10 suitable for the setpoint valve clearance to be set, wherein the tappet 1 is selected and mounted from a group sorting with elevations 10 of different heights.
  • a finely machined, in particular ground end face 12 of the elevation 10 can be provided.
  • the thermoformed plunger housing 2 which is subsequently deep-drawn and subsequently heat-hardened, is machined on its outside only on the outside of the cup shirt 3, ie on the guide contact surface 8, and ground here. This ensures that the required dimensional and shape tolerances of the cup shirt 3 in the guide bore 9 are in their desired range.
  • the outside of the cup base 4, ie the cam contact surface 5 is ing unprocessed and has a surface structure and geometry that has been generated in the deep-drawing process and in the heat treatment of the plunger housing 2.
  • the cam contact surface 5 is spherical, the center of which is raised by only a few micrometers with respect to its outer edge region.
  • the tappet V shown in Figure 2 is provided for a gas exchange valve drive with hydraulic valve clearance compensation.
  • the corresponding multi-part bucket tappet V comprises in addition to the plunger housing 2 'a hydraulic valve clearance compensation element 13 and a on the inside of the cup 3' oil-tight welded receiving plate 14 for the lash adjuster 13.
  • the required securing of the tappet 1 'against rotation in its guide bore (not shown) is assumed by a cup 3' secured against rotation 15, which engages in a complementary longitudinal groove in the guide bore.
  • the plunger housing 2 ' is also deep drawn from a sheet steel plate and then cured. As in the cup tappet 1 shown in FIG. 1, its outside is ground only on the cylindrical guide contact surface 8 ', while the outside of the cup bottom 4' including the cam contact surface 5 'is unworked.

Abstract

L'invention concerne un poussoir à coupelle (1, 1') pour un moteur à combustion interne et un procédé pour sa fabrication. Le poussoir à coupelle présente un boîtier de poussoir (2, 2') avec une chemise de coupelle cylindrique creuse (3, 3') et un fond de coupelle (4, 4') fermant la chemise de coupelle d'un côté, et sur lequel est façonnée la chemise de coupelle au moyen d'un façonnage à froid sans enlèvement de copeaux d'une ébauche en acier. Le côté extérieur du fond de coupelle sert de surface de contact (5, 5') pour une came (6) du moteur à combustion interne sollicitant en levée le poussoir à coupelle, et le côté extérieur de la chemise de coupelle sert de surface de contact (8, 8') pour un alésage de guidage (9) du moteur à combustion interne supportant le poussoir à coupelle dans la direction de la levée. En l'occurrence, le côté extérieur du boîtier de poussoir doit être usiné par enlèvement de copeaux seulement au niveau du côté extérieur de la chemise de coupelle.
PCT/EP2011/057855 2010-07-26 2011-05-16 Poussoir à coupelle et procédé pour sa fabrication WO2012013376A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201180036409.3A CN103026012B (zh) 2010-07-26 2011-05-16 杯式挺杆和用于制造这种杯式挺杆的方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010032254.7 2010-07-26
DE102010032254A DE102010032254A1 (de) 2010-07-26 2010-07-26 Tassenstößel und Verfahren zu dessen Herstellung

Publications (1)

Publication Number Publication Date
WO2012013376A1 true WO2012013376A1 (fr) 2012-02-02

Family

ID=44584901

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/057855 WO2012013376A1 (fr) 2010-07-26 2011-05-16 Poussoir à coupelle et procédé pour sa fabrication

Country Status (3)

Country Link
CN (1) CN103026012B (fr)
DE (1) DE102010032254A1 (fr)
WO (1) WO2012013376A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10119607B2 (en) 2016-04-15 2018-11-06 Koyo Bearings North America Llc Follower mechanism
US11143059B2 (en) 2019-10-03 2021-10-12 Koyo Bearings North America Llc Tappet assembly with unground outer cup
US11149593B2 (en) 2019-10-03 2021-10-19 Koyo Bearings North America Llc Tappet assembly with formed anti-rotation alignment device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103203326B (zh) * 2013-04-11 2014-09-24 机科发展科技股份有限公司 一种挺杆自动检测分选机
DE102013113255A1 (de) * 2013-11-29 2015-06-03 Thyssenkrupp Presta Teccenter Ag Verstellbare Nockenwelle
DE102014216961A1 (de) 2014-08-26 2016-03-03 Schaeffler Technologies AG & Co. KG Tassenstößel und Verfahren zu dessen Herstellung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829950A (en) * 1986-04-30 1989-05-16 Hitachi, Ltd. Valve lifter and method of producing the same
JPH11200820A (ja) * 1998-01-09 1999-07-27 Otics Corp バルブリフタのバルブ当り凸部の調厚加工方法
DE19957772A1 (de) * 1999-12-01 2001-06-07 Bayerische Motoren Werke Ag Drehgesicherter Ventilstößel für Ventiltriebe von Brennkraftmaschinen, insbesondere Tassenstößel
JP2001280105A (ja) * 2000-03-31 2001-10-10 Nittan Valve Co Ltd 内燃機関用薄肉バルブリフターの製造方法
DE10114073A1 (de) * 2001-03-22 2002-09-26 Ina Schaeffler Kg Stößel
EP1260679A2 (fr) * 2001-05-17 2002-11-27 INA- Schaeffler KG Poussoir de moteur à combustion interne
DE10360467A1 (de) * 2003-12-22 2005-07-21 Trw Deutschland Gmbh Mechanischer Ventilstößel
EP1600609A2 (fr) * 2004-05-25 2005-11-30 Ina Schaeffler KG Poussoir de soupape pour moteur à combustion interne
WO2006056328A1 (fr) * 2004-11-23 2006-06-01 Schaeffler Kg Poussoir a coupelle
DE19815790B4 (de) 1997-05-26 2010-05-12 Schaeffler Kg Mechanischer Ventilstößel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015359A1 (fr) * 1994-11-14 1996-05-23 Sumitimo Electric Industries, Ltd. Piece coulissante en ceramique
US5904123A (en) * 1997-05-26 1999-05-18 Ina Walzlager Schaeffler Ohg Mechanical valve tappet

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4829950A (en) * 1986-04-30 1989-05-16 Hitachi, Ltd. Valve lifter and method of producing the same
DE19815790B4 (de) 1997-05-26 2010-05-12 Schaeffler Kg Mechanischer Ventilstößel
JPH11200820A (ja) * 1998-01-09 1999-07-27 Otics Corp バルブリフタのバルブ当り凸部の調厚加工方法
DE19957772A1 (de) * 1999-12-01 2001-06-07 Bayerische Motoren Werke Ag Drehgesicherter Ventilstößel für Ventiltriebe von Brennkraftmaschinen, insbesondere Tassenstößel
JP2001280105A (ja) * 2000-03-31 2001-10-10 Nittan Valve Co Ltd 内燃機関用薄肉バルブリフターの製造方法
DE10114073A1 (de) * 2001-03-22 2002-09-26 Ina Schaeffler Kg Stößel
EP1260679A2 (fr) * 2001-05-17 2002-11-27 INA- Schaeffler KG Poussoir de moteur à combustion interne
DE10360467A1 (de) * 2003-12-22 2005-07-21 Trw Deutschland Gmbh Mechanischer Ventilstößel
EP1600609A2 (fr) * 2004-05-25 2005-11-30 Ina Schaeffler KG Poussoir de soupape pour moteur à combustion interne
WO2006056328A1 (fr) * 2004-11-23 2006-06-01 Schaeffler Kg Poussoir a coupelle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10119607B2 (en) 2016-04-15 2018-11-06 Koyo Bearings North America Llc Follower mechanism
US10385957B2 (en) 2016-04-15 2019-08-20 Koyo Bearings North America Llc Follower mechanism
US11143059B2 (en) 2019-10-03 2021-10-12 Koyo Bearings North America Llc Tappet assembly with unground outer cup
US11149593B2 (en) 2019-10-03 2021-10-19 Koyo Bearings North America Llc Tappet assembly with formed anti-rotation alignment device

Also Published As

Publication number Publication date
CN103026012A (zh) 2013-04-03
CN103026012B (zh) 2016-01-20
DE102010032254A1 (de) 2012-01-26

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