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DE4329371A1 - Method for the production of connecting rods by flash-free forging - Google Patents

Method for the production of connecting rods by flash-free forging

Info

Publication number
DE4329371A1
DE4329371A1 DE19934329371 DE4329371A DE4329371A1 DE 4329371 A1 DE4329371 A1 DE 4329371A1 DE 19934329371 DE19934329371 DE 19934329371 DE 4329371 A DE4329371 A DE 4329371A DE 4329371 A1 DE4329371 A1 DE 4329371A1
Authority
DE
Germany
Prior art keywords
connecting rods
production
flash
free forging
forging
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
DE19934329371
Other languages
German (de)
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.)
Brockhaus Soehne & Co KG GmbH
Original Assignee
Brockhaus Soehne & Co KG 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 Brockhaus Soehne & Co KG GmbH filed Critical Brockhaus Soehne & Co KG GmbH
Priority to DE19934329371 priority Critical patent/DE4329371A1/en
Publication of DE4329371A1 publication Critical patent/DE4329371A1/en
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/766—Connecting rods

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

Published without abstract.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Pleuel­ stangen für Brennkraftmaschinen durch Schmieden aus Stahl. Als Stand der Technik ist bekannt, daß Pleuelstangen als Gesenk­ schmiedeteile in 2-teiligen Werkzeugen (Gesenken) in Umformaggre­ gaten - Pressen und Hämmer - hergestellt werden. Bei diesem Ver­ fahren tritt an der Trennfuge der beiden Werkzeuge Material als Grat aus, der nachträglich entfernt werden muß.The invention relates to a method for producing connecting rods rods for internal combustion engines by forging from steel. It is known as prior art that connecting rods are used as dies forgings in 2-part tools (dies) in forming unit gaten - presses and hammers. With this ver drive occurs at the parting line of the two tools as material Burr that has to be removed afterwards.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu schaffen, mit dem das gratlose Schmieden von Pleuelstangen möglich ist. Das erfindungsgemäße Verfahren ist gekennzeichnet durch folgende Merkmale:
Mehrteiliges Werkzeug, bestehend aus Grundkörper (Matrize) mit eingearbeiteter Außenkontur der Pleuelstange und Ober- und Unter­ gesenk mit eingearbeiteter Gravur entsprechend der Pleuelform.The invention has for its object to provide a method with which the burr-free forging of connecting rods is possible. The method according to the invention is characterized by the following features:
Multi-part tool, consisting of a base body (die) with an integrated outer contour of the connecting rod and an upper and lower die with an integrated engraving corresponding to the connecting rod shape.

Vorgeformte, erwärmte Rohlinge werden in das Werkzeug eingelegt. Das geführte Obergesenk fährt vertikal in den Grundkörper, maß­ bestimmend auf das Untergesenk und vollzieht den Umformvorgang. Nach dem Umformvorgang öffnet das Werkzeug. Das Untergesenk hebt in vertikaler Richtung als Auswerfer das Schmiedestück aus dem Grundkörper.Preformed, heated blanks are placed in the tool. The guided upper die moves vertically into the base body, dimension determining the lower die and executing the forming process. After the forming process, the tool opens. The lower die lifts in the vertical direction as an ejector the forging from the Basic body.

Die Prinzipdarstellung der Erfindung ist in der beiliegenden Zeichnung dargestellt.The principle of the invention is in the accompanying Drawing shown.

Claims (1)

Verfahren zur Herstellung von Pleuelstangen für Brennkraft­ maschinen durch Schmieden aus Stahl, dadurch gekennzeichnet, daß die Pleuelstangen gratlos geschmiedet werden und an der Außenkontur keine Gesenkneigung aufweisen. Masseunregelmäßig­ keiten aus den Rohlingen und/oder Werkzeugverschleiß werden im Innenbereich von Kurbelwellen und Kolbenbolzenauge ausgeglichen.Process for the production of connecting rods for internal combustion machines by forging from steel, characterized, that the connecting rods are forged without burr and on the The outer contour has no die inclination. Irregular mass The blanks and / or tool wear are Balanced interior of crankshafts and piston pin eye.
DE19934329371 1993-09-01 1993-09-01 Method for the production of connecting rods by flash-free forging Ceased DE4329371A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19934329371 DE4329371A1 (en) 1993-09-01 1993-09-01 Method for the production of connecting rods by flash-free forging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19934329371 DE4329371A1 (en) 1993-09-01 1993-09-01 Method for the production of connecting rods by flash-free forging

Publications (1)

Publication Number Publication Date
DE4329371A1 true DE4329371A1 (en) 1995-03-09

Family

ID=6496487

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19934329371 Ceased DE4329371A1 (en) 1993-09-01 1993-09-01 Method for the production of connecting rods by flash-free forging

Country Status (1)

Country Link
DE (1) DE4329371A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798059A1 (en) * 1996-03-29 1997-10-01 Ascoforge Safe Method of production of a blank for a forged connecting rod
EP1348501A1 (en) * 2002-03-29 2003-10-01 Peugeot Citroen Automobiles SA Method for the manufacture of a forged connecting rod and tool for carrying out the method
FR2837730A1 (en) * 2002-03-29 2003-10-03 Peugeot Citroen Automobiles Sa Forged connecting rod manufacturing procedure starts with cylindrical metal slug that is formed into a pre-blank and shaped between matrices

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Lange, K: Umformtechnik - Handbuch für Industrie u. Wissenschaft Band 2: Massivumformung, Springer Verlag, 1988, S. 42, 43, 67-71 *
Pischel, H: Stand u. Enticklungstendenzen beim Herstellen von Pleueln, in: Werkstatt und Betrieb 123 (1990) Nr. 12, S. 949-955 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798059A1 (en) * 1996-03-29 1997-10-01 Ascoforge Safe Method of production of a blank for a forged connecting rod
FR2746683A1 (en) * 1996-03-29 1997-10-03 Ascoforge Safe METHOD FOR MANUFACTURING FORGED ROD BLANK
US5878491A (en) * 1996-03-29 1999-03-09 Ascoforge Safe Process for the manufacture of a forged connecting rod
EP1348501A1 (en) * 2002-03-29 2003-10-01 Peugeot Citroen Automobiles SA Method for the manufacture of a forged connecting rod and tool for carrying out the method
FR2837730A1 (en) * 2002-03-29 2003-10-03 Peugeot Citroen Automobiles Sa Forged connecting rod manufacturing procedure starts with cylindrical metal slug that is formed into a pre-blank and shaped between matrices
FR2837731A1 (en) * 2002-03-29 2003-10-03 Peugeot Citroen Automobiles Sa METHOD FOR MANUFACTURING A FORGED CONNECTING ROD AND TOOLS FOR IMPLEMENTING THIS METHOD
EP1350584A3 (en) * 2002-03-29 2004-08-04 Peugeot Citroen Automobiles SA Method and tool for forming a forged connecting rod

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection