EP0841105B1 - Procédé pour le filage d'une pièce en forme de godet - Google Patents

Procédé pour le filage d'une pièce en forme de godet Download PDF

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Publication number
EP0841105B1
EP0841105B1 EP97119363A EP97119363A EP0841105B1 EP 0841105 B1 EP0841105 B1 EP 0841105B1 EP 97119363 A EP97119363 A EP 97119363A EP 97119363 A EP97119363 A EP 97119363A EP 0841105 B1 EP0841105 B1 EP 0841105B1
Authority
EP
European Patent Office
Prior art keywords
extrusion
cup
shaped part
process according
lubricant
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.)
Expired - Lifetime
Application number
EP97119363A
Other languages
German (de)
English (en)
Other versions
EP0841105A3 (fr
EP0841105A2 (fr
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/fr
Publication of EP0841105A3 publication Critical patent/EP0841105A3/fr
Application granted granted Critical
Publication of EP0841105B1 publication Critical patent/EP0841105B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to a method for extrusion a cup-shaped part made of an approximately cylindrical body using a flowable lubricant, being up to the extrusion process for extruding the cup-shaped part First a deepened centering approach to the final depth is formed in the base body (see e.g. US-A-4 129 022).
  • extrusion for example, backward extrusion, Forward extrusion, combinations thereof or for example is about cross extrusion.
  • the invention therefore aims to provide a method for extrusion to provide a cup-shaped part, which the Forming a cup-shaped part using flowable Lubricants allowed such that an axis-centric Formation of the sleeve-shaped part ensured with high precision and largely avoid post-processing to let.
  • this is a method for extrusion a cup-shaped part made of an approximately cylindrical body provided using a flowable lubricant, which is characterized in that before the pressing process for extruding the cup-shaped part to the final depth first a deepened centering shoulder by means of a stamp is pressed in at the same time that at least one exemption is molded on the inner wall surface.
  • the cutout preferably extends to the edge of the neck. hereby the lubricant can run counter to or in the direction of the stamp movement are specifically derived, but also ensured is that the lubricant is previously reliable Has fulfilled lubrication function and on all sides also in the circumferential direction effective by forming a film of lubricant has been made.
  • the inner wall is distributed, which is particularly regular Circumferential distances are arranged. This ensures that the flowable lubricant passes over the Exemptions evenly distributed in the circumferential direction for reliable Fulfillment of its lubricating function can flow, and that he via the shortest possible exit routes to the outside via the savings can escape. At the same time they form between the Exemptions available, protruding towards the inside Sections provide reliable guidance when axially directed Movement of the extrusion tool, which is used for the pressing process used to form the cup-shaped part to the final depth becomes. Due to the uniform discharge in the circumferential direction of the free-flowing lubricant becomes effective counteracted an axial displacement of the extrusion tool.
  • the is or are Cutouts are channel-shaped and essentially have one semicircular cross section. This allows one Derivation of the flowable lubricant via the cutouts achieve with the lowest possible flow resistance.
  • the base body is preferably used for extrusion, especially after deepening the training Centering approach preheated so that the final Extrusion process after the so-called warm extrusion is carried out.
  • one or more cutouts on the inner wall surface be shaped such that a later used flowable Reliable and reliable lubrication during extrusion Fulfillment of its lubricant function can be dissipated in this way can be effective that displacement of the extrusion tool is prevented and is also prevented that the flowable Lubricant can cause deformation of the wall surface.
  • a later used flowable Reliable and reliable lubrication during extrusion Fulfillment of its lubricant function can be dissipated in this way can be effective that displacement of the extrusion tool is prevented and is also prevented that the flowable Lubricant can cause deformation of the wall surface.
  • hereby can be economically cost-effective Extrusion cup-shaped parts in a highly precise manner and without significant postprocessing.
  • the at least one exemption at the same time during training of a recessed centering approach.
  • Figure 1 is the starting body shown, which of an approximately cylindrical base body 1 is formed, for example, from a rod material has been previously cut with a predetermined length.
  • this cylindrical base body 1 can be a stamp, not shown, for example in one the first step is a slightly deeper trained centering approach 2 are trained.
  • several recesses 3 on the inner wall surface 4th preferably formed at the same time as the centering projection are preferably arranged regularly at circumferential intervals.
  • the thus formed recesses 3 are preferably axially parallel directed to the central axis of the cylindrical body and extend to the edge of the neck 5. Between the circumferential direction of the inner wall surface 4 are formed recesses 3 remain section 6 projecting radially inwards.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)

Claims (8)

  1. Procédé de formage par filage d'une pièce (10) en forme de godet dans un corps de base (1) à peu près cylindrique en utilisant un lubrifiant coulant, pour le filage de la pièce en forme de godet (10) étant formé, préalablement au cycle de pressage, un rebord de centrage (2) évidé jusqu'à la profondeur définitive, caractérisé en ce que, préalablement au cycle de pressage pour le filage de la pièce en forme de godet (10) à la profondeur définitive, un évidement (3) au moins est formé au moyen d'un poinçon dans la surface de la paroi interne (4) du rebord de centrage évidé (2), de préférence simultanément avec celui-ci.
  2. Procédé suivant la revendication 1, caractérisé en ce que l'évidement (3) s'étend jusqu'au rebord (5).
  3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que plusieurs évidements répartis dans le sens de la circonférence sont formés dans la paroi interne (4).
  4. Procédé suivant la revendication 3, caractérisé en ce que les évidements (3) sont formés à intervalles de circonférence réguliers.
  5. Procédé suivant une des revendications précédentes, caractérisé en ce que les évidements (3) présentent une forme de canal.
  6. Procédé suivant une des revendications précédentes, caractérisé en ce que les évidements (3) présentent une section transversale essentiellement en forme de demi-cercle.
  7. Procédé suivant une des revendications précédentes, caractérisé en ce que le corps de base est préchauffé pour le filage indirect.
  8. Procédé suivant une des revendications précédentes, caractérisé en ce que comme traitement de filage, on exécute un filage indirect, un filage direct, un filage latéral on des combinaisons de ces traitements.
EP97119363A 1996-11-07 1997-11-05 Procédé pour le filage d'une pièce en forme de godet Expired - Lifetime EP0841105B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19645954A DE19645954A1 (de) 1996-11-07 1996-11-07 Verfahren zum Fließpressen eines napfförmigen Teils
DE19645954 1996-11-07

Publications (3)

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

Family

ID=7810951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97119363A Expired - Lifetime EP0841105B1 (fr) 1996-11-07 1997-11-05 Procédé pour le filage d'une pièce en forme de godet

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1824426B (zh) * 2005-02-21 2010-12-08 斯奈克玛 加工金属毛坯的方法、实施其的套筒以及套筒与盖子装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1678874A (zh) * 2002-08-31 2005-10-05 贝洱两合公司 适用于汽车空调的冷却剂冷凝器
DE102009001942A1 (de) * 2009-03-27 2010-09-30 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Gehäuse einer elektrischen Maschine und elektrische Maschine
DE102018120091A1 (de) * 2018-08-17 2020-02-20 Linhardt Gmbh & Co. Kg Dosenverpackung, Dosenverpackungsrohling sowie Vorrichtung und Verfahren zu deren Herstellung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE551053A (fr) *
DE2635342C2 (de) * 1976-08-03 1981-09-24 Mannesmann AG, 4000 Düsseldorf Presse zum Warmlochen eines Metallblockes
JPH01215427A (ja) * 1988-02-23 1989-08-29 Sumitomo Metal Ind Ltd 底付き金属管の製造方法
JP2826464B2 (ja) * 1994-03-18 1998-11-18 大同特殊鋼株式会社 冠状部品の鍛造方法と鍛造装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1824426B (zh) * 2005-02-21 2010-12-08 斯奈克玛 加工金属毛坯的方法、实施其的套筒以及套筒与盖子装置

Also Published As

Publication number Publication date
EP0841105A3 (fr) 2000-01-26
DE59709612D1 (de) 2003-04-30
DE19645954A1 (de) 1998-05-14
EP0841105A2 (fr) 1998-05-13

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