EP0339293A3 - Method for grinding cams of a camshaft - Google Patents
Method for grinding cams of a camshaft Download PDFInfo
- 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
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 ) .
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)
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4402161A (en) * | 1981-10-02 | 1983-09-06 | Litton Industrial Products, Inc. | Cylindrical grinding machine |
-
1988
- 1988-04-27 DE DE19883814124 patent/DE3814124A1/en active Granted
-
1989
- 1989-04-01 EP EP89105739A patent/EP0339293A3/en not_active Ceased
Patent Citations (4)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE GB |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE GB |
|
17P | Request for examination filed |
Effective date: 19900920 |
|
17Q | First examination report despatched |
Effective date: 19911118 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 19951216 |