EP0624414A1 - Procédé de fabrication d'un vilebréquin - Google Patents

Procédé de fabrication d'un vilebréquin Download PDF

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Publication number
EP0624414A1
EP0624414A1 EP94103262A EP94103262A EP0624414A1 EP 0624414 A1 EP0624414 A1 EP 0624414A1 EP 94103262 A EP94103262 A EP 94103262A EP 94103262 A EP94103262 A EP 94103262A EP 0624414 A1 EP0624414 A1 EP 0624414A1
Authority
EP
European Patent Office
Prior art keywords
tube
crankshaft
oil
pipe
casting
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
EP94103262A
Other languages
German (de)
English (en)
Inventor
Hans Baumgartner
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse AG
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 Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH, Knorr Bremse AG filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of EP0624414A1 publication Critical patent/EP0624414A1/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0072—Casting in, on, or around objects which form part of the product for making objects with integrated channels

Definitions

  • the present invention relates to a method according to the preamble of claim 1, which is provided for producing a crankshaft having an oil channel.
  • crankshafts currently used for internal combustion engines or the like are produced either by forging or by casting, the latter also being referred to as GGG70 crankshafts.
  • an oil channel is provided within the crankshaft, which communicates with the oil in the oil pan via a plurality of oil inlet and oil outlet bores.
  • the invention is therefore based on the object of developing a method in accordance with the preamble of claim 1 in such a way that the costs for the production of the oil duct can be substantially reduced.
  • the invention therefore proposes to manufacture the crankshaft by means of a casting process and to arrange a thin-walled tube at that point in the mold at which the oil channel is provided such that the tube is cast into the body of the crankshaft during the subsequent casting process.
  • This ensures that the oil channel required for lubrication is already produced when the crankshaft is cast; the implementation of a subsequent, very complex deep hole drilling process is therefore no longer necessary, so that the costs for this are eliminated.
  • the costs for producing the pipe according to the invention are negligibly low, so that the method according to the invention enables a considerable reduction in costs overall.
  • the length of the tube should preferably be dimensioned such that its ends protrude axially beyond the ends of the crankshaft, making it possible to hold the end regions of the tube which are free-standing in this way at corresponding locations on the casting mold; the placement of the pipe therefore requires little effort and is very easy to carry out.
  • notches, recesses or the like are formed in these end regions of the tube in accordance with the development of the invention specified in Claim 3 in such a way that a predetermined breaking point arises there, then achieves that after the casting process, the protruding ends of the tube according to the invention can be removed very easily by breaking off; with correspondingly exact dimensioning of these predetermined breaking points, it may even be possible to break the lateral protrusions of the tube during sandblasting of the crankshaft in rotating drums by appropriate contact with other components without manual intervention being necessary.
  • the tube it is advisable to shape at least one of the two end regions of the tube in such a way that the tube lies against a corresponding point on the casting mold or another positioning element in such a way that the tube is positioned exactly within the crankshaft.
  • Such an alignment of the tube according to the invention is particularly important if the tube is intended for a cranked crankshaft and is consequently curved several times.
  • sealing zones are formed in the tube in those areas in which no oil should flow through, which are preferably formed by squeezing the tube.
  • the two ends of the tube are provided with such sealing zones, so that the sealing plugs mentioned at the outset, which are required in the conventional production process, are no longer required.
  • the oil channel must be on site or below the camp in question is interrupted; this interruption can be made extremely easily by forming a sealing zone according to the invention.
  • the manufacturing method according to the invention has the advantage over the prior art that in this way even more than two chambers can be formed in the oil channel.
  • sealing zones produced by the squeezing process are not sufficiently tight in the pipe, these sealing zones can be additionally welded without any significant effort.
  • crankshaft 1 shows a first embodiment of a crankshaft 1 which is produced by the method according to the invention.
  • This crankshaft 1 accordingly has a cast-in tube 2, the interior of which forms an oil channel 3.
  • This oil channel 3 communicates via a total of three bores 21 with the lubricating oil located in the oil pan.
  • the tube 2 according to the invention has those areas at which it emerges from the crankshaft 1, a predetermined breaking point 22.
  • the respective end region of the tube 2 is squeezed using a known method, as can be seen directly from FIG. 1.
  • a sealing zone 23 and 24 is formed at both ends of the tube 2, which hermetically seals the oil channel 3 at these points. If sufficient tightness is not achieved with the squeezing method used, it is advisable to carry out additional welding in the sealing zones 23 and 24.
  • the crankshaft 1 shown in FIG. 1 is produced according to the invention as follows.
  • a mold, not shown, is first prepared in the usual way for the casting process.
  • the tube 2 according to the invention is then positioned within the casting mold in such a way that the tube 2 in the finished crankshaft 1 has the course shown in FIG. 1. It may be necessary to fix the tube 2 to the casting mold or an additional, if necessary external device.
  • the left and right protruding remnants of the tube 2 are broken off, which is extremely easily possible due to the predetermined breaking points 22 provided at the relevant points. If the predetermined breaking points 22 are dimensioned with sufficient precision, it may even be possible to remove the remnants of the tube 2 in a rotating sandblasting drum, so that the outlay for this is negligible.
  • a tube 2 can be provided for the oil channel, which has the crankshaft corresponding to the curve shown in plan view in FIG. 2.
  • this tube 2 also has sealing zones 23 and 24 in the form of tube crushes at its end regions, which are additionally welded. Also, predetermined breaking points 22 are provided in these areas.
  • the right end region 27 of the tube 2 is angled in the same plane as the cranks of the tube 2. This makes it possible to position the tube 2 extremely precisely in the casting mold by means of the end region 27. Of course, even in the case of a straight-line or non-cranked tube 2, it is possible to provide an angled end region for improved positioning. It is also possible to provide such a positioning aid at both ends of the tube 2.
  • FIG. 3 shows an embodiment of a crankshaft 1 in which the oil channel 3 consists of two chambers.
  • the pipe 2 according to the invention is divided into two corresponding oil pipe areas by an additional sealing zone 25.
  • a bearing is provided at the location of the sealing zone 25, for example, the oil emerges from the left-hand chamber of the oil pipe 3 via the bore 21 shown above to the bearing and enters the right-hand chamber of the oil channel via the bore 21 shown below 3 on again.
  • crankshaft 1 shown in FIG. 3 correspond to that shown in FIG that reference may be made to their description for further details.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP94103262A 1993-05-04 1994-03-04 Procédé de fabrication d'un vilebréquin Ceased EP0624414A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934314727 DE4314727A1 (de) 1993-05-04 1993-05-04 Verfahren zum Herstellen einer Kurbelwelle
DE4314727 1993-05-04

Publications (1)

Publication Number Publication Date
EP0624414A1 true EP0624414A1 (fr) 1994-11-17

Family

ID=6487149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94103262A Ceased EP0624414A1 (fr) 1993-05-04 1994-03-04 Procédé de fabrication d'un vilebréquin

Country Status (3)

Country Link
EP (1) EP0624414A1 (fr)
BR (1) BR9401857A (fr)
DE (1) DE4314727A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612678A1 (de) * 1996-03-29 1997-10-02 Audi Ag Verfahren zum Herstellen eines Gußstückes

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5635305A (en) * 1995-05-22 1997-06-03 Itt Automotive, Inc. Machinable cast-in-place tube enclosure fittings
DE19546722B4 (de) * 1995-12-14 2005-03-31 Alstom Leitschaufelträger für eine Gasturbine
DE19647069A1 (de) * 1996-11-14 1998-05-20 Heidelberger Druckmasch Ag Gußkörper
DE19727566A1 (de) * 1997-06-28 1999-01-07 Bayerische Motoren Werke Ag Verfahren zum Druckgießen eines Maschinengehäuses, insbesondere für Brennkraftmaschinen
DE10026546B4 (de) * 2000-05-23 2004-09-02 Heppes, Frank, Dipl.-Ing. Gießkerne und Verfahren zur Erzeugung von Hohlräumen in Gussteilen
DE10054330A1 (de) * 2000-11-02 2002-05-08 Bosch Gmbh Robert Guß-Blech-Verbundkörper sowie Verfahren zu dessen Herstellung
DE102005033504A1 (de) * 2005-07-14 2007-01-18 Hauni Maschinenbau Ag Vorrichtung zum Transport von stabförmigen Artikeln der tabakverarbeitenden Industrie
DE102019112147A1 (de) * 2019-05-09 2020-11-12 Julius Schüle Druckguss GmbH Verfahren zum Eingießen einer Rohrleitung in ein mittels eines Druckgießverfahrens herzustellendes Bauteil

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151901B (de) * 1957-11-05 1963-07-25 Schmidt Gmbh Karl In Gussstuecke einzugiessende Rohrleitungen wie beispielsweise OElrohre in Maschinenteilen
JPS56117863A (en) * 1980-02-19 1981-09-16 Toyota Motor Corp Method for manufacturing oil hole of hollow crank shaft
EP0110234A1 (fr) * 1982-11-24 1984-06-13 Giesserei- und Maschinenbau Bodan AG Pièce coulée avec canal moulé
US4829642A (en) * 1988-07-22 1989-05-16 General Motors Corporation Method of making a crankshaft

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151901B (de) * 1957-11-05 1963-07-25 Schmidt Gmbh Karl In Gussstuecke einzugiessende Rohrleitungen wie beispielsweise OElrohre in Maschinenteilen
JPS56117863A (en) * 1980-02-19 1981-09-16 Toyota Motor Corp Method for manufacturing oil hole of hollow crank shaft
EP0110234A1 (fr) * 1982-11-24 1984-06-13 Giesserei- und Maschinenbau Bodan AG Pièce coulée avec canal moulé
US4829642A (en) * 1988-07-22 1989-05-16 General Motors Corporation Method of making a crankshaft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 5, no. 199 (M - 102)<871> 17 December 1981 (1981-12-17) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19612678A1 (de) * 1996-03-29 1997-10-02 Audi Ag Verfahren zum Herstellen eines Gußstückes

Also Published As

Publication number Publication date
DE4314727A1 (de) 1994-11-10
BR9401857A (pt) 1994-12-06

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