EP0339293A3 - Method for grinding cams of a camshaft - Google Patents

Method for grinding cams of a camshaft Download PDF

Info

Publication number
EP0339293A3
EP0339293A3 EP89105739A EP89105739A EP0339293A3 EP 0339293 A3 EP0339293 A3 EP 0339293A3 EP 89105739 A EP89105739 A EP 89105739A EP 89105739 A EP89105739 A EP 89105739A EP 0339293 A3 EP0339293 A3 EP 0339293A3
Authority
EP
European Patent Office
Prior art keywords
cams
angular velocity
axis
surface line
grinding
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.)
Ceased
Application number
EP89105739A
Other languages
German (de)
French (fr)
Other versions
EP0339293A2 (en
Inventor
Horst Josef Wedeniwski
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.)
Fortuna Werke Maschinenfabrik GmbH
Original Assignee
Fortuna Werke Maschinenfabrik 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 Fortuna Werke Maschinenfabrik GmbH filed Critical Fortuna Werke Maschinenfabrik GmbH
Publication of EP0339293A2 publication Critical patent/EP0339293A2/en
Publication of EP0339293A3 publication Critical patent/EP0339293A3/en
Ceased legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

Ein Verfahren dient zum Schleifen von Nocken (10) einer Nocken­ welle. Die Nocken (10) werden um eine durch das Zentrum eines Grundkreises (15) der Nocken (10) verlaufende erste Achse (13) mit vorgegebener Winkelgeschwindigkeit ( ω ) gedreht. Eine Schleifscheibe (20) liegt mit einer zu der ersten Achse (13) parallelen Mantellinie (23) an den Nocken (10) an. Sie wird in Abhängigkeit von der Drehstellung (  ) der Nocken (10) relativ zur ersten Achse (13) entlang einer zweiten Achse (11) bewegt, die senkrecht auf der ersten Achse (13) steht. Dies geschieht derart, daß die Mantellinie (23) während der Drehung der Nocken (10) auf einer vorbestimmten Nockenkontur (15, 16, 17) wandert, wobei die Winkelgeschwindigkeit ( ω ) während der Drehung der Nocken (10) variiert wird. Auf diese Weise wandert die Mantellinie (23) entlang dem Grundkreis (15) mit höherer Winkelgeschwindigkeit ( ωG ), entlang von Flanken (16) und einer Spitze (17) der Nocken (10) hingegen mit verminderter Winkelgeschwindigkeit ( ωF ). A method is used for grinding cams (10) of a cam shaft. The cams (10) are rotated about a first axis (13) running through the center of a base circle (15) of the cams (10) at a predetermined angular velocity (ω). A grinding wheel (20) lies against the cams (10) with a surface line (23) parallel to the first axis (13). Depending on the rotational position () of the cams (10), it is moved relative to the first axis (13) along a second axis (11) which is perpendicular to the first axis (13). This takes place in such a way that the surface line (23) moves on a predetermined cam contour (15, 16, 17) during the rotation of the cams (10), the angular velocity (ω) being varied during the rotation of the cams (10). In this way, the surface line (23) travels along the base circle (15) with a higher angular velocity (ω G ), along flanks (16) and a tip (17) of the cams (10) with a reduced angular velocity (ω F ).

Um ohne Erhöhung der Gesamtschleifzeit die verbleibenden Nockenformfehler zu vermindern, wird die Winkelgeschwindigkeit ( ω ) im Bereiche der Spitze (17) auf einen Wert ( ωS ) oberhalb der verminderten Winkelgeschwindigkeit ( ωF ), jedoch unterhalb der höheren Winkelgeschwindigkeit ( ωG ) eingestellt. In order to reduce the remaining cam shape errors without increasing the total grinding time, the angular velocity (ω) in the area of the tip (17) is set to a value (ω S ) above the reduced angular velocity (ω F ), but below the higher angular velocity (ω G ) .

EP89105739A 1988-04-27 1989-04-01 Method for grinding cams of a camshaft Ceased EP0339293A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3814124 1988-04-27
DE19883814124 DE3814124A1 (en) 1988-04-27 1988-04-27 METHOD FOR GRINDING CAMS OF A CAM DISC

Publications (2)

Publication Number Publication Date
EP0339293A2 EP0339293A2 (en) 1989-11-02
EP0339293A3 true EP0339293A3 (en) 1990-08-29

Family

ID=6352937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89105739A Ceased EP0339293A3 (en) 1988-04-27 1989-04-01 Method for grinding cams of a camshaft

Country Status (2)

Country Link
EP (1) EP0339293A3 (en)
DE (1) DE3814124A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA02004136A (en) 1999-10-27 2002-10-17 Unova Uk Ltd Grinding machine with two grinding wheels.
DE102008061528A1 (en) 2008-12-10 2010-06-17 Wedeniwski, Horst Josef, Dr. Method for numerically controlled grinding of cams, involves placing cam in contact point of larger grinding disk of working step grinding
CN102049719B (en) * 2010-09-13 2012-07-04 湖南宇环同心数控机床有限公司 Numerically controlled grinding machining method of camshaft

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712029A1 (en) * 1977-03-18 1978-09-21 Mitsubishi Heavy Ind Ltd Crankshaft grinding machine speed controller - monitors motor rotation and swinging table angular speed for constant grinding speed
FR2398573A1 (en) * 1977-07-26 1979-02-23 Newall Eng CAM PROCESSING PROCESS AND APPARATUS
DE2754850A1 (en) * 1977-12-09 1979-06-13 Volkswagenwerk Ag Grinder control system for non-circular workpieces - keeps volume ground per unit time constant by sensing local dia. and altering speed
EP0085225A2 (en) * 1982-01-29 1983-08-10 Litton Industrial Automation Systems, Inc. Cylindrical grinding machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4402161A (en) * 1981-10-02 1983-09-06 Litton Industrial Products, Inc. Cylindrical grinding machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2712029A1 (en) * 1977-03-18 1978-09-21 Mitsubishi Heavy Ind Ltd Crankshaft grinding machine speed controller - monitors motor rotation and swinging table angular speed for constant grinding speed
FR2398573A1 (en) * 1977-07-26 1979-02-23 Newall Eng CAM PROCESSING PROCESS AND APPARATUS
DE2754850A1 (en) * 1977-12-09 1979-06-13 Volkswagenwerk Ag Grinder control system for non-circular workpieces - keeps volume ground per unit time constant by sensing local dia. and altering speed
EP0085225A2 (en) * 1982-01-29 1983-08-10 Litton Industrial Automation Systems, Inc. Cylindrical grinding machine

Also Published As

Publication number Publication date
DE3814124A1 (en) 1989-11-09
EP0339293A2 (en) 1989-11-02
DE3814124C2 (en) 1992-02-20

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