EP0841105A3 - Method for extruding of a cup-shaped part - Google Patents

Method for extruding of a cup-shaped part Download PDF

Info

Publication number
EP0841105A3
EP0841105A3 EP97119363A EP97119363A EP0841105A3 EP 0841105 A3 EP0841105 A3 EP 0841105A3 EP 97119363 A EP97119363 A EP 97119363A EP 97119363 A EP97119363 A EP 97119363A EP 0841105 A3 EP0841105 A3 EP 0841105A3
Authority
EP
European Patent Office
Prior art keywords
extrusion
cup
shaped part
way
recess
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.)
Granted
Application number
EP97119363A
Other languages
German (de)
French (fr)
Other versions
EP0841105A2 (en
EP0841105B1 (en
Inventor
Anton Dipl.-Ing. Holzhauer
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.)
Anton Holzhauer Umformtechnik
Original Assignee
Anton Holzhauer Umformtechnik
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 Anton Holzhauer Umformtechnik filed Critical Anton Holzhauer Umformtechnik
Publication of EP0841105A2 publication Critical patent/EP0841105A2/en
Publication of EP0841105A3 publication Critical patent/EP0841105A3/en
Application granted granted Critical
Publication of EP0841105B1 publication Critical patent/EP0841105B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/18—Making uncoated products by impact extrusion
    • B21C23/186—Making uncoated products by impact extrusion by backward extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/20—Making uncoated products by backward extrusion
    • B21C23/205—Making products of generally elongated shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied

Abstract

Es wird ein Verfahren zum Fließpressen eines napfförmigen Teils (10) aus einem etwa zylindrischen Grundkörper (1) unter Einsatz eines fließfähigen Schmierstoffs angegeben, bei dem vor der Ausführung des eigentlichen Fließpreßvorgangs, ausgehend von einem etwa zylindrischen Grundkörper (1) zur Ausformung eines napfförmigen Teils bis auf Endtiefe wenigstens eine Freisparung (3) an der Innenwandfläche (4) ausgeformt wird. Mittels der so gebildeten Freisparung (3) oder vorzugsweise der Mehrzahl von in Umfangsrichtung vorzugsweise regelmäßig verteilten Freisparungen (3), welche insbesondere bis zum freien Rand (5) des napfförmigen Teils (10) reichen, kann der später beim Fließpreßvorgang eingesetzte fließfähige Schmierstoff in gezielter Weise nach außen abgeführt werden. Hierdurch lassen sich Achsversetzungen und Achsverdrängungen des Fließpreß-Werkzeugs bei der Bearbeitung bis auf Endtiefe vermeiden und dennoch wird eine ausreichende Schmierfunktion durch den fließfähigen Schmierstoff sichergestellt. Vorzugsweise wird oder werden die Freisparung(en) (3) mittels des Stempels zur Ausbildung eines Zentrieransatzes (2) zugleich ausgeformt. Als Fließpreßbearbeitung kommt Rückwärtsfließpressen, Vorwärtsfließpressen, Querfließpressen oder Kombinationen hiervon beispielsweise in Betracht.

Figure 00000001
The invention relates to a method for extruding a cup-shaped part (10) from an approximately cylindrical base body (1) using a free-flowing lubricant, in which prior to the execution of the actual extrusion process, starting from an approximately cylindrical base body (1) for forming a cup-shaped part at least one recess (3) is formed on the inner wall surface (4) to the final depth. By means of the cutout (3) formed in this way, or preferably the plurality of cutouts (3), which are preferably regularly distributed in the circumferential direction and which extend in particular to the free edge (5) of the cup-shaped part (10), the flowable lubricant used later in the extrusion process can be targeted Way to the outside. In this way, axis misalignments and axis displacements of the extrusion tool can be avoided during machining to the final depth, and yet a sufficient lubrication function is ensured by the flowable lubricant. Preferably, the recess (s) (3) is or are simultaneously shaped by means of the stamp to form a centering projection (2). Backward extrusion, forward extrusion, cross extrusion or combinations thereof, for example, come into consideration as extrusion processing.
Figure 00000001
EP97119363A 1996-11-07 1997-11-05 Method for extruding of a cup-shaped part Expired - Lifetime EP0841105B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645954 1996-11-07
DE19645954A DE19645954A1 (en) 1996-11-07 1996-11-07 Process for extruding a cup-shaped part

Publications (3)

Publication Number Publication Date
EP0841105A2 EP0841105A2 (en) 1998-05-13
EP0841105A3 true EP0841105A3 (en) 2000-01-26
EP0841105B1 EP0841105B1 (en) 2003-03-26

Family

ID=7810951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119363A Expired - Lifetime EP0841105B1 (en) 1996-11-07 1997-11-05 Method for extruding of a cup-shaped part

Country Status (2)

Country Link
EP (1) EP0841105B1 (en)
DE (2) DE19645954A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7334429B2 (en) 2002-08-31 2008-02-26 Behr Gmbh & Co. Kg Refrigerant condenser for motor vehicle air-conditioning systems
FR2882282B1 (en) * 2005-02-21 2008-10-17 Snecma Moteurs Sa METHOD FOR CORROCING A METAL LOPIN, SHAPED FOR IMPLEMENTING THE METHOD AND ASSEMBLY OF A SHIRT AND A COVER FOR IMPLEMENTING THE METHOD
DE102009001942A1 (en) * 2009-03-27 2010-09-30 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Housing for sealed electrical machine utilized e.g. as motor in steering system of motor vehicle, has base forming axial catch for bearing receptacle with bearing shield, where housing is manufactured by impact extrusion process
DE102018120091A1 (en) * 2018-08-17 2020-02-20 Linhardt Gmbh & Co. Kg Can packaging, can packaging blank and device and method for their production

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE551053A (en) *
US4129022A (en) * 1976-08-03 1978-12-12 Mannesmann Aktiengesellschaft Piercing a solid billet
JPH01215427A (en) * 1988-02-23 1989-08-29 Sumitomo Metal Ind Ltd Manufacture of bottomed metallic pipe
JPH07256387A (en) * 1994-03-18 1995-10-09 Daido Steel Co Ltd Method and device for forging detecting ring and coronary parts for torque sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE551053A (en) *
US4129022A (en) * 1976-08-03 1978-12-12 Mannesmann Aktiengesellschaft Piercing a solid billet
JPH01215427A (en) * 1988-02-23 1989-08-29 Sumitomo Metal Ind Ltd Manufacture of bottomed metallic pipe
JPH07256387A (en) * 1994-03-18 1995-10-09 Daido Steel Co Ltd Method and device for forging detecting ring and coronary parts for torque sensor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 526 (M - 897) 22 November 1989 (1989-11-22) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29) *

Also Published As

Publication number Publication date
DE19645954A1 (en) 1998-05-14
EP0841105A2 (en) 1998-05-13
EP0841105B1 (en) 2003-03-26
DE59709612D1 (en) 2003-04-30

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