WO2006119730A3 - Method and device for producing a three-dimensional cam and three-dimensional cam, especially for variably actuating lift valves in internal combustion engines - Google Patents

Method and device for producing a three-dimensional cam and three-dimensional cam, especially for variably actuating lift valves in internal combustion engines Download PDF

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Publication number
WO2006119730A3
WO2006119730A3 PCT/DE2006/000760 DE2006000760W WO2006119730A3 WO 2006119730 A3 WO2006119730 A3 WO 2006119730A3 DE 2006000760 W DE2006000760 W DE 2006000760W WO 2006119730 A3 WO2006119730 A3 WO 2006119730A3
Authority
WO
WIPO (PCT)
Prior art keywords
cam
dimensional cam
producing
internal combustion
combustion engines
Prior art date
Application number
PCT/DE2006/000760
Other languages
German (de)
French (fr)
Other versions
WO2006119730A2 (en
Inventor
Hermann Krueger
Original Assignee
Hermann Krueger
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 Hermann Krueger filed Critical Hermann Krueger
Publication of WO2006119730A2 publication Critical patent/WO2006119730A2/en
Publication of WO2006119730A3 publication Critical patent/WO2006119730A3/en

Links

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
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/08—Milling cams, camshafts, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
    • B23P13/02—Making metal objects by operations essentially involving machining but not covered by a single other subclass in which only the machining operations are important
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/12—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding cams or camshafts
    • 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
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • F01L13/0042—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams being profiled in axial and radial direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
    • B23P2700/02—Camshafts
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Gears, Cams (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A three-dimensional cam is defined by the peripheral surface (5) of a rotation body (4) which contacts the cam across its entire length (11) and whose rotational axis (6) intersects the rotational axis (3) of the cam when the circular cylindrical base section (2) of the cam is produced. The elevation section of the cam (1) and the areas of the circular cylindrical base section (3) adjoining the same are only crossed once. In order to produce the elevation section, the rotation body (4) carries out movements which include a rotation about an axis (12). A three-dimensional cam produced according to the inventive method can be used for a cam follower to feel different elevation curves when the cam is displaced along its rotational axis.
PCT/DE2006/000760 2005-05-11 2006-05-10 Method and device for producing a three-dimensional cam and three-dimensional cam, especially for variably actuating lift valves in internal combustion engines WO2006119730A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005021788A DE102005021788B4 (en) 2005-05-11 2005-05-11 Method and device for producing a three-dimensional cam and three-dimensional cams, in particular for the variable actuation of lift valves in internal combustion engines
DE102005021788.5 2005-05-11

Publications (2)

Publication Number Publication Date
WO2006119730A2 WO2006119730A2 (en) 2006-11-16
WO2006119730A3 true WO2006119730A3 (en) 2007-03-01

Family

ID=35034309

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2006/000760 WO2006119730A2 (en) 2005-05-11 2006-05-10 Method and device for producing a three-dimensional cam and three-dimensional cam, especially for variably actuating lift valves in internal combustion engines

Country Status (2)

Country Link
DE (1) DE102005021788B4 (en)
WO (1) WO2006119730A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502007005459D1 (en) * 2007-03-28 2010-12-09 Groz Beckert Kg Cam for a shedding device of a loom
DE102007032954B3 (en) * 2007-07-14 2008-12-18 Krüger, Hermann, Prof. Dr.-Ing. Production of a three-dimensional cam for driving a cam follower comprises crossing the rotational axis of the cam in a single crossing angle during formation of a base circle cylinder section without cutting the rotational axis of the cam
DE102007032990A1 (en) 2007-07-16 2009-01-22 Krüger, Hermann, Prof. Dr.-Ing. Roller for drive of internal combustion engine, has contact surface including intersection line with plane through roller axis, where line includes bent section with radius of curvature smaller than half of maximum roller radius, and bend
DE102008019242B4 (en) * 2008-04-17 2020-06-04 Audi Ag Valve train for gas exchange valves of an internal combustion engine
DE102008022938A1 (en) 2008-05-09 2009-11-12 Schaeffler Kg Machining device for manufacturing three-dimensional cam of valve cam shaft of internal combustion engine, has machining tool divided into two regions, where one of regions includes counterpart to cam profile
CN209503487U (en) * 2019-02-22 2019-10-18 昆山市恒达精密机械工业有限公司 Numerical-control full-automatic molding equipment

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678981C (en) * 1936-10-28 1939-07-26 Friedrich Deckel Praez S Mecha Method for grinding camshafts
GB2116463A (en) * 1982-03-17 1983-09-28 Fiat Auto Spa Process and apparatus for grinding the surface of a cam
DE3435313A1 (en) * 1984-03-15 1985-09-26 Erwin 7611 Nordrach Junker METHOD AND DEVICE FOR HIGH-SPEED PROFILE GRINDING OF ROTATION-SYMMETRICAL WORKPIECES
DE3913104C1 (en) * 1989-04-21 1990-06-28 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
EP0497008A2 (en) * 1991-02-01 1992-08-05 Erwin Junker Process and apparatus for grinding cams or the like
DE19620813A1 (en) * 1996-05-23 1997-11-27 Junker Erwin Maschf Gmbh Method and device for non-circular grinding of cam shapes with concave flanks
DE19851858A1 (en) * 1997-11-11 1999-05-20 Komatsu Machinery Corp Camshaft machine tool for motor vehicle production
DE19813165A1 (en) * 1998-03-25 1999-10-07 Kopp Werkzeugmasch Gmbh Method and device for machining non-circular inner and outer contours
DE19916689C1 (en) * 1999-04-14 2000-12-07 Man B & W Diesel Ag Cam manufacturing method for diesel engine valve control cams has angular offset between 2 alternate cam surfaces provided by machining successive narrow strips with given angular offset between them

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1182480B (en) * 1985-07-02 1987-10-05 Fiat Auto Spa TAPPING SYSTEM FOR INTERNAL COMBUSTION ENGINES EQUIPPED WITH SHAFTS WITH VARIABLE PROFILE CAMS

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678981C (en) * 1936-10-28 1939-07-26 Friedrich Deckel Praez S Mecha Method for grinding camshafts
GB2116463A (en) * 1982-03-17 1983-09-28 Fiat Auto Spa Process and apparatus for grinding the surface of a cam
DE3435313A1 (en) * 1984-03-15 1985-09-26 Erwin 7611 Nordrach Junker METHOD AND DEVICE FOR HIGH-SPEED PROFILE GRINDING OF ROTATION-SYMMETRICAL WORKPIECES
DE3913104C1 (en) * 1989-04-21 1990-06-28 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
EP0497008A2 (en) * 1991-02-01 1992-08-05 Erwin Junker Process and apparatus for grinding cams or the like
DE19620813A1 (en) * 1996-05-23 1997-11-27 Junker Erwin Maschf Gmbh Method and device for non-circular grinding of cam shapes with concave flanks
DE19851858A1 (en) * 1997-11-11 1999-05-20 Komatsu Machinery Corp Camshaft machine tool for motor vehicle production
DE19813165A1 (en) * 1998-03-25 1999-10-07 Kopp Werkzeugmasch Gmbh Method and device for machining non-circular inner and outer contours
DE19916689C1 (en) * 1999-04-14 2000-12-07 Man B & W Diesel Ag Cam manufacturing method for diesel engine valve control cams has angular offset between 2 alternate cam surfaces provided by machining successive narrow strips with given angular offset between them

Also Published As

Publication number Publication date
WO2006119730A2 (en) 2006-11-16
DE102005021788A1 (en) 2005-10-20
DE102005021788B4 (en) 2006-12-28

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