EP0114570B1 - Dispositif de boudinage d'un profil creux - Google Patents

Dispositif de boudinage d'un profil creux Download PDF

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Publication number
EP0114570B1
EP0114570B1 EP83810591A EP83810591A EP0114570B1 EP 0114570 B1 EP0114570 B1 EP 0114570B1 EP 83810591 A EP83810591 A EP 83810591A EP 83810591 A EP83810591 A EP 83810591A EP 0114570 B1 EP0114570 B1 EP 0114570B1
Authority
EP
European Patent Office
Prior art keywords
die
recess
flange
pressing
shaping
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
Application number
EP83810591A
Other languages
German (de)
English (en)
Other versions
EP0114570A2 (fr
EP0114570A3 (en
Inventor
Alfred Wagner
Adolf Ames
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.)
Alcan Holdings Switzerland AG
Original Assignee
Schweizerische Aluminium 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 Schweizerische Aluminium AG filed Critical Schweizerische Aluminium AG
Publication of EP0114570A2 publication Critical patent/EP0114570A2/fr
Publication of EP0114570A3 publication Critical patent/EP0114570A3/de
Application granted granted Critical
Publication of EP0114570B1 publication Critical patent/EP0114570B1/fr
Expired 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
    • B21C23/21—Presses specially adapted for extruding metal
    • B21C23/217—Tube extrusion presses
    • 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
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • 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
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • 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
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/02—Dies

Definitions

  • the invention relates to a device for extruding a hollow profile from a block, in particular made of light metal, which is brought up in a block receiver to the shaping cross section of a die and inserted into it by means of the pressing force of a press die, the hollow profile between a mandrel determining its inner contour and the its shaping cross-section, which produces the outer contour, is formed and, at the end of the pressing process, a flange is formed which overlaps the shaping cross-section towards the stamp.
  • An extrusion press for such a pressing process is known from DE-A-2935804.
  • the block is partially pressed between the stamping die and the die and the outer shape of the flange is determined by the receiver bore containing the block. After the tube / flange unit has been created, it is removed against the pressing direction.
  • the invention has for its object to develop the device of the type mentioned in such a way that the circumferential contour of the flange remains independent of the shape of the transducer bore. In addition, it should be possible to pull off the pipe provided with the flange in the pressing direction.
  • the die forms both the hollow profile and the flange which is stuck thereon in its entire height.
  • Particular developments of the invention are characterized in the subclaims.
  • the embodiment according to claim 3 is particularly advantageous when large-height flanges are to be produced.
  • the finished hollow profile with flange can be removed from the extrusion press in the pressing direction.
  • the divided surfaces delimiting the shaping cross-section can be moved apart by a gap, forming a gap, which is larger than the corresponding extension of the flange, so that the latter can be extended by the tool or the die.
  • DE-C-92 64 82 indicates that matrices of extrusion presses can be divided radially per se.
  • the separating surfaces of the die parts - and optionally also the parts of a tool holder containing these die parts - advantageously run diagonally through the flange floor plan, i. H. through two of the floor plan corners. These corners preferably determine vertical dividing surfaces, which allows the die parts to be moved laterally.
  • the radially split die is held together during the pressing process by a surrounding pressure ring, which either represents a separate machine part or is formed by the block receiver.
  • the contours of the cavern determine the shape of the flange, it is also possible according to claim 1 to design the flange with ring ribs or the like if there are corresponding shaped channels in the cavern floor.
  • a hollow press die 4 projects into a bore 5 of a block receiver 6 according to FIG. 1.
  • the maximum distance a between the cylinder-side receiver front 7 and the press surface 8 of a press disk provided on the press die 4 9 in - not shown - rest position of the press ram 4 is dimensioned such that in this rest position of the transducer bore 5, a hollow bolt B made of light metal can be inserted through a loading carriage 11. If the pin axis A is aligned coaxially with the press axis E, the pin B is pushed into the receiver 6 by the press ram 4 in the pressing direction x.
  • a die 20 is seated in a tool holder 19 as a molding tool.
  • the tool holder 19 is supported against a crosshead 21 at the press exit.
  • the tool holder 19 and die 20 are divided on the vertical diameter D of the circular shaping cross section or die opening 23 and can be moved apart in the radial direction z; the shaping cross section 23 thus limit two half rings 24, 24 a . From these, an outlet channel 25 widens conically to a through opening 26 of the crosshead 21.
  • an indentation 30 lies in front of the die opening 23 in the die 20, the greatest width b of which is slightly larger than the diameter f of the receiver bore 5.
  • the side walls 31 of this indentation 30 delimit an almost square outline according to FIG. 3 and are one Embodiment curved (31 a in Fig. 5).
  • the pitch diameter D forms a diagonal through two mutually opposite molding corners 32, which are thus located on the parting surfaces 33 of the die 20.
  • This indentation 30 receives a part of the matrix B formed from the bolt B, which is formed into the hollow profile 3 during the pressing process.
  • This consists of a tubular part 35, the inner contour of the mandrel column 14 and the outer contour of the half rings 24, 24 a of the die opening 23 are determined, and a flange 36 integrally formed therewith with a height i.
  • This flange 36 arises from the baling residue of the matrix B ,.
  • the distance of this flange 36 from the side walls 31 of the indentation 30 is shown exaggerated in FIG. 3.
  • the flange 36 can be removed after pressing the bolt B completely and moving the die halves 20 a and 20 b (FIG. 5) between them in the pressing direction x. Before the extruded hollow profile 3 is pulled off, the mandrel column 14 is retracted, flange corners 36 e being supported against the transducer face 18.
  • the die 20 expands in the pressing direction x from its die front 40 to form a truncated cone-like closing pressure surface 41 of a length n up to an annular surface 42, which is a shoulder-like ring shoulder 43 follows; the latter abuts an annular rib 44 of the tool holder 19.
  • the closing pressure surface 41 which is inclined at an angle w of, for example, 15 ° to the press axis E, encloses an approximately parallel pressure wall 49 of a central recess 50 of the one-piece block receiver 6, as is particularly clear from FIG. 4.
  • the closing pressure surface 41 can also be encompassed by a closing ring 51, which abuts a nose 52 of the die 20 and whose thickness h corresponds at least to the height i of the flange 36.
  • FIG. 7 An embodiment of FIG. 7 is produced thanks to a shaped groove 45 of the die 20, delimited by a shaped rib 46, a flange 36 with a circumferential rib 37, the flange 36 projecting over the die front 40; the projecting flange part is formed in a shaped cavity 54 of the transducer face 18, to which the central transducer opening 50 connects in the pressing direction x.
  • flange tubes 3 in one piece, which can be used, for example, as recipients for centrifuges of uranium separation systems.
  • the outline shape of the flange 36 which is determined by the indentation 30. freely selectable, as well as the diameter d of the flange tube 3. It is also up to the respective circumstances whether conventional hollow bolts B are used or these are tempered beforehand.
  • the device for solution annealing of the bolt B is not shown in the drawing.
  • the mandrel column 14 can be designed to move along or be a fixed part of the press ram 4.

Landscapes

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

Claims (10)

1. Dispositif pour extruder un profilé creux (35) à partir d'un bloc de matière (B), en particulier en métal léger, que l'on amène dans un récepteur de bloc de matière (6) placé contre la section de formage (23) d'une matrice (20) et que l'on introduit dans cette section de formage au moyen de la force de pressage d'un poinçon (4), étant précisé que le profilé creux (35) se forme entre un mandrin (14), qui détermine son contour intérieur, et la section de formage (23), qui crée son contour extérieur et étant précisé qu'à la fin du processus de pressage un flasque (36) vient de forme et déborde, côté poinçon, la section de formage (23),
caractérisé en ce qu'en avant de la section de formage (23) est directement prévu sur la matrice (20), pour servir d'espace de formage pour le flasque (26) un chambrage (30) dont l'extension radiale (b), qui est la valeur de mesure pour le flasque (36), est supérieure au passage libre (d) de la section de formage (23) ; et en ce que le chambrage (30) est usiné dans la face frontale (40) de la matrice dirigée vers le récepteur de bloc de matière (6) et peut être fermé par le récepteur de bloc de matière (6) et par la face frontale (9) du poinçon (4).
2. Dispositif selon la revendication 1, caractérisé en ce que la partie de la matrice qui contient le chambrage (30) peut être séparé de la matrice (20).
3. Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'au chambrage (30) de la matrice (20) correspond dans la face frontale (18), voisine de la matrice, du récepteur de matière un chambrage (54) qui prolonge cette matrice dans la direction opposée à la direction du pressage (x).
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la matrice (20) est séparée, radialement par rapport à la direction de pressage (x), en au moins deux parties de matrice (20a, 20b) ; et en ce que les surfaces (24, 24,) qui limitent la section de formage (23) peuvent, en formant une fente, s'écarter l'une de l'autre d'une valeur de mesure qui est supérieure à l'extension radiale correspondante (b) du flasque (36) ou du chambrage (30).
5. Dispositif selon la revendication 4, caractérisé en ce que les parois latérales (31) du chambrage (30) présentent un contour qui contient plusieurs angles ; et en ce que la position des surfaces de joint (33) des parties de la matrice (20a. 20b) est définie par deux angles du contour, étant précisé que les surfaces de joint (33) passent de préférence verticalement à travers la section de formage (23).
6. Dispositif selon au moins l'une des revendications 1 à 5, caractérisé en ce qu'à la matrice correspond une bague de pression (6, 51) qui l'enserre en position de pressage.
7. Dispositif selon les revendications 1 et 6, caractérisé en ce que le récepteur de bloc de matière (6) est conçu sous forme d'une bague de pression ; et en ce qu'un évidemment (50), dirigé vers la matrice (20), du récepteur du bloc de matière (6) vient enserrer la matrice (20).
8. Dispositif selon au moins l'une des revendications 1 à 7, caractérisé en ce que la matrice (20) va en diminuant, en direction opposée à la direction du pressage (x), au moins dans une zone proche de la face frontale (40) de la matrice ; et en ce que cette zone conique (41) peut pénétrer dans la bague de pression (6, 51) qui, de préférence, est prévue avec possibilité de coulissement au moins dans le sens axial.
9. Dispositif selon la revendication 7 ou 8, caractérisé en ce que les zones ou surfaces coniques (41 et 49) de la matrice (20) et de la bague de pression (6, 51) sont inclinées sous un angle (w) d'environ 5 à 15° par rapport à la direction de pressage (x).
10. Dispositif selon au moins l'une des revendications 1 à 9, caractérisé en ce que dans le fond du chambrage (30) sont usinées des rigoles de forme (45).
EP83810591A 1982-12-24 1983-12-14 Dispositif de boudinage d'un profil creux Expired EP0114570B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3247977 1982-12-24
DE19823247977 DE3247977A1 (de) 1982-12-24 1982-12-24 Verfahren und vorrichtung zum strangpressen eines hohlprofils

Publications (3)

Publication Number Publication Date
EP0114570A2 EP0114570A2 (fr) 1984-08-01
EP0114570A3 EP0114570A3 (en) 1984-10-10
EP0114570B1 true EP0114570B1 (fr) 1987-07-29

Family

ID=6181731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83810591A Expired EP0114570B1 (fr) 1982-12-24 1983-12-14 Dispositif de boudinage d'un profil creux

Country Status (3)

Country Link
US (1) US4592224A (fr)
EP (1) EP0114570B1 (fr)
DE (2) DE3247977A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4211172A1 (de) * 1992-04-03 1993-10-07 Hildebrandt Spulen Bobbins Gmb Spulenkörper und Verfahren zu dessen Herstellung
NO20001802L (no) * 2000-04-07 2001-10-08 Norsk Hydro As En konstruksjonsdel, fremgangsmåte og verktöy for tilvirkning av en konstruksjonsdel samt anvendelse av samme
DE102007034094B4 (de) * 2007-07-21 2009-04-02 Umicore Ag & Co. Kg Anordnung von Ziehstein und Fassung sowie Verwendung
KR101230752B1 (ko) * 2010-12-03 2013-02-06 주식회사 코리아나화장품 히스피듈린 또는 그 유도체를 함유하는 화장료 조성물
CN102716932B (zh) * 2010-12-10 2015-06-10 玉环普天单向器有限公司 一种减速起动机中起动齿轮的制作模具
US9346089B2 (en) * 2012-10-12 2016-05-24 Manchester Copper Products, Llc Extrusion press systems and methods
US9545653B2 (en) 2013-04-25 2017-01-17 Manchester Copper Products, Llc Extrusion press systems and methods

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US682360A (en) * 1901-07-01 1901-09-10 Herbert R Keithley Method of manufacturing tubular bodies.
US1854411A (en) * 1931-03-16 1932-04-19 Leighton John Wycliffe Method of making tubular metal blanks
US2225902A (en) * 1939-06-07 1940-12-24 Chase Brass & Copper Co Method of producing fittings in the form of adapters or the like
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Also Published As

Publication number Publication date
EP0114570A2 (fr) 1984-08-01
EP0114570A3 (en) 1984-10-10
DE3372720D1 (en) 1987-09-03
DE3247977A1 (de) 1984-07-05
US4592224A (en) 1986-06-03

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