DE102008035698A1 - Piston or piston part manufacturing method for internal combustion engine, involves forming passage opening of circular or oval shape in piston or piston part by electro-shaping using electrode with flat or conical end - Google Patents
Piston or piston part manufacturing method for internal combustion engine, involves forming passage opening of circular or oval shape in piston or piston part by electro-shaping using electrode with flat or conical end Download PDFInfo
- Publication number
- DE102008035698A1 DE102008035698A1 DE200810035698 DE102008035698A DE102008035698A1 DE 102008035698 A1 DE102008035698 A1 DE 102008035698A1 DE 200810035698 DE200810035698 DE 200810035698 DE 102008035698 A DE102008035698 A DE 102008035698A DE 102008035698 A1 DE102008035698 A1 DE 102008035698A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- passage opening
- piston part
- cooling channel
- combustion engine
- 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- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens oder eines Kolbenteils für einen Verbrennungsmotor, wobei ein im Kolben oder Kolbenteil vorgesehener Kühlkanal mit mindestens einer Durchgangsöffnung versehen wird, die von einem Innenbereich des Kolbens oder Kolbenteils ausgehend in Richtung des Kühlkanals eingebracht wird. Die vorliegende Erfindung betrifft ferner einen mit diesem Verfahren herstellbaren Kolben bzw. ein mit diesem Verfahren herstellbares Kolbenteil.The The present invention relates to a process for producing a Piston or a piston part for an internal combustion engine, wherein a cooling duct provided in the piston or piston part is provided with at least one passage opening, the of an inner region of the piston or piston part, starting in the direction the cooling channel is introduced. The present invention further relates to a producible by this method piston or a producible with this method piston part.
Ein
gattungsgemäßes Verfahren ist aus der
Beim Einbringen der Durchgangsöffnung durch mechanische Bearbeitung können sich jedoch Grate bilden sowie Teilchen des Kolbenwerkstoffs in den Kühlkanal gelangen. Im Zusammenhang mit Kühlkanälen, die durch Eingießen eines hohlen Bauteils gebildet sind, stellt sich ferner das Problem, dass die Bindung zwischen dem Bauteil und dem Kolbenwerkstoff beschädigt werden kann. Wird bspw. eine Aluminiumlegierung als Kolbenwerkstoff und ein Stahlmaterial für das hohle Bauteil verwendet, muss die Oberfläche des Bauteils vorher durch Alfinieren behandelt werden, damit eine Alfinschicht als Bindeschicht zwischen dem Werkstoff des Bauteils und dem Kolbenwerkstoff entsteht. Die Alfinschicht vermittelt die Bindung zwischen Bauteil und Kolben bzw. Kolbenteil und kann durch die mechanische Bearbeitung beschädigt werden.At the Introduction of the passage opening by mechanical processing However, burrs can form as well as particles of the piston material get into the cooling channel. In connection with cooling channels, which are formed by pouring a hollow component, Furthermore, the problem arises that the bond between the component and the piston material can be damaged. Will, for example. an aluminum alloy as a piston material and a steel material used for the hollow component, the surface must be previously treated by Alfinieren, so that a Alfin layer as a bonding layer between the material of the component and the piston material is created. The Alfin layer conveys the Binding between component and piston or piston part and can through the mechanical processing will be damaged.
In
der
Die Aufgabe der vorliegenden Erfindung besteht darin, ein gattungsgemäßes Verfahren derart weiterzubilden, dass eine Gratbildung und eine Beschädigung der Bindung zwischen einem eingegossenen Bauteil und dem Kolben bzw. Kolbenteil sicher ausgeschlossen werden.The Object of the present invention is a generic Further develop a method such that a burr formation and a Damage to the bond between a cast-in component and the piston or piston part are safely excluded.
Die Lösung besteht in einem Verfahren mit den Merkmalen des Patentanspruchs 1. Erfindungsgemäß ist vorgesehen, dass die mindestens eine Durchgangsöffnung durch Elysieren in den Kolben oder in das Kolbenteil eingebracht wird. Gegenstand der vorliegenden Erfindung ist ferner ein mit dem erfindungsgemäßen Verfahren herstellbarer Kolben bzw. ein mit dem erfindungsgemäßen Verfahren herstellbares Kolbenteil.The Solution consists in a procedure with the characteristics of the Patent claim 1. According to the invention, that the at least one passage opening by Elysieren is introduced into the piston or in the piston part. Subject of the The present invention is further a with the invention Method producible pistons or one with the invention Method producible piston part.
Unter
Elysieren wird ein elektrochemisches Bearbeitungsverfahren verstanden,
das auch unter der Bezeichung ECM-Verfahren (electrochemical machining)
bekannt ist. Bei diesem Verfahren wird eine Elektrode als Kathode
und das zu bearbeitende Bauteil als Anode geschaltet und zwischen
der Kathode und der Anode unter Beigabe einer Elektrolytlösung
eine elektrische Spannung angelegt. Zwischen der Kathode und der
Anode erfolgt ein Ladungsaustausch, durch den das Bauteil gezielt
bearbeitet wird. Das dabei abgetragene Material fällt in der
Regel als Metallhydroxid aus der Elektrolytlösung aus.
Dieses Verfahren ist als solches bekannt (vgl.
Der Werkstoffabtrag erfolgt somit berührungslos, so dass die mit einer mechanischen Bearbeitung einhergehenden Probleme vermieden werden. Eine Gratbildung, das Eintragen von Werkstoffteilchen in den Kühlkanal sowie eine Beschädigung der Bindung zwischen einem eingegossen Bauteil und dem Kolben oder Kolbenteil kann somit zuverlässig ausgeschlossen werden. Da die Bearbeitung unabhängig vom Gefügezustand der Werkstoffe erfolgt und weiches und hartes Material gleich gut abge tragen werden, kann die mindestens eine Durchgangsöffnung problemlos in verschiedene Werkstoffe eingebracht werden, bspw. in den Kolbenwerkstoff und in den Werkstoff eines ggf. eingegossenen hohlen Bauteils. Die Werkstoffe werden weder thermisch noch mechanisch beansprucht.Of the Material removal is thus contactless, so that the Avoiding problems associated with machining become. Burr formation, the introduction of material particles in the cooling channel and damage to the binding between a molded component and the piston or piston part can thus be reliably excluded. Because the editing regardless of the structural state of the materials takes place and soft and hard material can be worn equally well, the at least one passage opening easily into different Materials are introduced, for example. In the piston material and in the material of a possibly cast hollow component. The materials are neither stressed thermally nor mechanically.
Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.advantageous Further developments emerge from the subclaims.
Die mindestens eine Durchgangsöffnung kann je nach den Anforderungen des Einzelfalls beliebig gestaltet werden, bspw. mit einem kreisförmigen oder ovalen Durchmesser, gekrümmt oder mit einem über ihre Länge variierendem Durchmesser. Zum Elysieren kann insbesondere eine Elektrode mit einem planen Ende oder einem kegelförmigen Ende verwendet werden, um die Gestaltung der Durchgangsöffnung den Erfordernissen anzupassen.The At least one through-hole may vary depending on the requirements of the case be designed arbitrarily, for example. With a circular or oval diameter, curved or with an over their length varying diameter. To Elysieren can in particular an electrode with a planar end or a cone-shaped End used to design the through hole to adapt to the requirements.
Es ist von Vorteil, zunächst eine Sackbohrung in den Kolben oder das Kolbenteil einzubringen und diese anschließend durch Elysieren zu der Durchgangsöffnung fertig zu bearbeiten. Auf diese Weise wird eine Trichterbildung am Rand der Durchgangsöffnung vermieden.It is an advantage, first a blind hole in the piston or bring in the piston part and then this finished by Elysieren to the passage opening finished. In this way, a funnel formation at the edge of the through hole avoided.
Das erfindungsgemäße Verfahren ist für alle Kolbenwerkstoffe, insbesondere Stahl oder Leichtmetallwerkstoff sowie für alle Werkstoffe eines ggf. eingegossenen hohlen Bauteils geeignet. Dies gilt insbesondere auch für einen Kolben bzw. ein Kolbenoberteil mit einem Ringträger, der aus einem Ringträgerteil und einem Kühlkanalteil zusammengesetzt ist, die fest miteinander verbunden sind und gemeinsam den Kühlkanal bilden. Das Kühlkanalteil besteht in der Regel aus einem alfinierten Stahlblech.The inventive method is for all piston materials, especially steel or light metal material as well as for all materials of a possibly cast hollow component suitable. This is especially true for a piston or a piston upper part with a ring bearer, which consists of a ring bearer part and a cooling passage part which are fixed to each other are connected and together form the cooling channel. The Cooling channel part usually consists of an alfinated Sheet steel.
Ein
Ausführungsbeispiel der Erfindung wird im Folgenden anhand
der beigefügten Zeichnung näher erläutert.
Der
Kolben
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 1431562 A1 [0002, 0004] - EP 1431562 A1 [0002, 0004]
- - DE 3531761 A1 [0007] - DE 3531761 A1 [0007]
- - DE 102006025456 A1 [0007] - DE 102006025456 A1 [0007]
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810035698 DE102008035698A1 (en) | 2008-07-30 | 2008-07-30 | Piston or piston part manufacturing method for internal combustion engine, involves forming passage opening of circular or oval shape in piston or piston part by electro-shaping using electrode with flat or conical end |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810035698 DE102008035698A1 (en) | 2008-07-30 | 2008-07-30 | Piston or piston part manufacturing method for internal combustion engine, involves forming passage opening of circular or oval shape in piston or piston part by electro-shaping using electrode with flat or conical end |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008035698A1 true DE102008035698A1 (en) | 2010-02-04 |
Family
ID=41461538
Family Applications (1)
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DE200810035698 Withdrawn DE102008035698A1 (en) | 2008-07-30 | 2008-07-30 | Piston or piston part manufacturing method for internal combustion engine, involves forming passage opening of circular or oval shape in piston or piston part by electro-shaping using electrode with flat or conical end |
Country Status (1)
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DE (1) | DE102008035698A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011141071A1 (en) * | 2010-05-11 | 2011-11-17 | Ks Kolbenschmidt Gmbh | Method for producing an arbitrary geometry on pistons of internal combustion engines |
DE102010056220A1 (en) * | 2010-12-24 | 2012-06-28 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2017216172A1 (en) * | 2016-06-13 | 2017-12-21 | Ks Kolbenschmidt Gmbh | Cooling channel opening by means of circular milling operation |
US10184421B2 (en) | 2012-03-12 | 2019-01-22 | Tenneco Inc. | Engine piston |
US11162453B2 (en) | 2016-05-04 | 2021-11-02 | Ks Kolbenschmidt Gmbh | Piston |
EP3508714B1 (en) | 2018-01-09 | 2022-03-30 | MAN Truck & Bus SE | Piston for a combustion engine |
Citations (14)
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CH360576A (en) * | 1957-02-22 | 1962-02-28 | Rolls Royce | Process for the manufacture of turbomachine blades |
DE2358684A1 (en) * | 1973-02-06 | 1974-09-19 | Jenoptik Jena Gmbh | ELECTRODE TOOL FOR ELECTROLYTIC MACHINING OF METALLIC MATERIALS |
WO1986001272A1 (en) * | 1984-08-13 | 1986-02-27 | Blumer Juerg | Piston for internal combustion engines |
DE3531761A1 (en) | 1985-09-06 | 1987-03-12 | Kloeckner Humboldt Deutz Ag | Process and apparatus for the production of a curved hole |
DE9407385U1 (en) * | 1994-05-04 | 1994-07-21 | Mtu Muenchen Gmbh | Electrochemical drilling device |
DE4428207A1 (en) * | 1994-08-09 | 1996-02-15 | Bmw Rolls Royce Gmbh | Mfg. turbine rotor disc with curved cooling air channels |
EP1431562A1 (en) | 2002-12-18 | 2004-06-23 | KS Kolbenschmidt GmbH | Method of manufacturing of a piston with a cooling channel |
DE102005000709A1 (en) * | 2004-01-06 | 2005-08-04 | General Electric Co. | Low weight control stage for high temperature steam turbines, has blade molding section equipped with steam turbine bucket attached to rotor dovetail, such that rotor dovetail corresponds to first dovetail |
DE102004054587B3 (en) * | 2004-11-11 | 2006-05-18 | Siemens Ag | Production method e.g. for reproducible micro drillings, having micro drilled hole with diameter of maximally 110micro m and aspect relationship of least 10 with drilling provided by electro-chemical process |
DE102004057527A1 (en) * | 2004-11-29 | 2006-08-10 | Carl Johannes Fruth | Method for electrochemical machining of a workpiece and electrode for such a method |
WO2007001779A2 (en) * | 2005-06-28 | 2007-01-04 | Federal-Mogul Corporation | Method of making a sliding bearing |
DE19959593B4 (en) * | 1999-12-10 | 2007-02-22 | Rolls-Royce Deutschland Ltd & Co Kg | Method of making a bore by Elysieren |
DE102006025456A1 (en) | 2006-05-30 | 2007-12-06 | Daimlerchrysler Ag | Electro-chemical processing method for object made of electrical conductive material, involves forming gap between electrode and object made of electrical conductive material, in which electrolyte solution flows |
DE102006046765A1 (en) * | 2006-09-29 | 2008-04-03 | Daimler Ag | Method for providing deep cavities in electrically conductive material, especially in automobile industry, involves mechanical processing and subsequent electrochemical processing |
-
2008
- 2008-07-30 DE DE200810035698 patent/DE102008035698A1/en not_active Withdrawn
Patent Citations (14)
Publication number | Priority date | Publication date | Assignee | Title |
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CH360576A (en) * | 1957-02-22 | 1962-02-28 | Rolls Royce | Process for the manufacture of turbomachine blades |
DE2358684A1 (en) * | 1973-02-06 | 1974-09-19 | Jenoptik Jena Gmbh | ELECTRODE TOOL FOR ELECTROLYTIC MACHINING OF METALLIC MATERIALS |
WO1986001272A1 (en) * | 1984-08-13 | 1986-02-27 | Blumer Juerg | Piston for internal combustion engines |
DE3531761A1 (en) | 1985-09-06 | 1987-03-12 | Kloeckner Humboldt Deutz Ag | Process and apparatus for the production of a curved hole |
DE9407385U1 (en) * | 1994-05-04 | 1994-07-21 | Mtu Muenchen Gmbh | Electrochemical drilling device |
DE4428207A1 (en) * | 1994-08-09 | 1996-02-15 | Bmw Rolls Royce Gmbh | Mfg. turbine rotor disc with curved cooling air channels |
DE19959593B4 (en) * | 1999-12-10 | 2007-02-22 | Rolls-Royce Deutschland Ltd & Co Kg | Method of making a bore by Elysieren |
EP1431562A1 (en) | 2002-12-18 | 2004-06-23 | KS Kolbenschmidt GmbH | Method of manufacturing of a piston with a cooling channel |
DE102005000709A1 (en) * | 2004-01-06 | 2005-08-04 | General Electric Co. | Low weight control stage for high temperature steam turbines, has blade molding section equipped with steam turbine bucket attached to rotor dovetail, such that rotor dovetail corresponds to first dovetail |
DE102004054587B3 (en) * | 2004-11-11 | 2006-05-18 | Siemens Ag | Production method e.g. for reproducible micro drillings, having micro drilled hole with diameter of maximally 110micro m and aspect relationship of least 10 with drilling provided by electro-chemical process |
DE102004057527A1 (en) * | 2004-11-29 | 2006-08-10 | Carl Johannes Fruth | Method for electrochemical machining of a workpiece and electrode for such a method |
WO2007001779A2 (en) * | 2005-06-28 | 2007-01-04 | Federal-Mogul Corporation | Method of making a sliding bearing |
DE102006025456A1 (en) | 2006-05-30 | 2007-12-06 | Daimlerchrysler Ag | Electro-chemical processing method for object made of electrical conductive material, involves forming gap between electrode and object made of electrical conductive material, in which electrolyte solution flows |
DE102006046765A1 (en) * | 2006-09-29 | 2008-04-03 | Daimler Ag | Method for providing deep cavities in electrically conductive material, especially in automobile industry, involves mechanical processing and subsequent electrochemical processing |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011141071A1 (en) * | 2010-05-11 | 2011-11-17 | Ks Kolbenschmidt Gmbh | Method for producing an arbitrary geometry on pistons of internal combustion engines |
US20130062218A1 (en) * | 2010-05-11 | 2013-03-14 | Ks Kolbenschmidt Gmbh | Method for producing an arbitrary geometry on pistons of internal combustion engines |
US20150224589A1 (en) * | 2010-05-11 | 2015-08-13 | Ks Kolbenschmidt Gmbh | Method for producing an arbitrary geometry on pistons of internal combustion engines |
DE102010020227B4 (en) | 2010-05-11 | 2023-10-26 | Ks Kolbenschmidt Gmbh | Method for generating an arbitrarily designed geometry on pistons of internal combustion engines and a device for carrying out the method |
DE102010056220A1 (en) * | 2010-12-24 | 2012-06-28 | Mahle International Gmbh | Piston for an internal combustion engine |
US8661965B2 (en) | 2010-12-24 | 2014-03-04 | Mahle International Gmbh | Piston for an internal combustion engine |
US10184421B2 (en) | 2012-03-12 | 2019-01-22 | Tenneco Inc. | Engine piston |
US11162453B2 (en) | 2016-05-04 | 2021-11-02 | Ks Kolbenschmidt Gmbh | Piston |
WO2017216172A1 (en) * | 2016-06-13 | 2017-12-21 | Ks Kolbenschmidt Gmbh | Cooling channel opening by means of circular milling operation |
CN109475949A (en) * | 2016-06-13 | 2019-03-15 | Ks科尔本施密特有限公司 | Cooling duct for recycling milling machine operation is open |
CN109475949B (en) * | 2016-06-13 | 2021-03-12 | Ks科尔本施密特有限公司 | Cooling channel opening for cyclic milling operations |
EP3508714B1 (en) | 2018-01-09 | 2022-03-30 | MAN Truck & Bus SE | Piston for a combustion engine |
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