EP0048499A1 - Dispositif à refouler sur des presses - Google Patents

Dispositif à refouler sur des presses Download PDF

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Publication number
EP0048499A1
EP0048499A1 EP81107830A EP81107830A EP0048499A1 EP 0048499 A1 EP0048499 A1 EP 0048499A1 EP 81107830 A EP81107830 A EP 81107830A EP 81107830 A EP81107830 A EP 81107830A EP 0048499 A1 EP0048499 A1 EP 0048499A1
Authority
EP
European Patent Office
Prior art keywords
die
holders
articulated
articulated levers
bearings
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
EP81107830A
Other languages
German (de)
English (en)
Other versions
EP0048499B1 (fr
Inventor
Tadeusz Rut
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.)
Instytut Obrobki Plastycznej
Original Assignee
Instytut Obrobki Plastycznej
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
Priority claimed from PL1978204016A external-priority patent/PL112203B1/pl
Priority claimed from PL21113278A external-priority patent/PL122409B1/pl
Application filed by Instytut Obrobki Plastycznej filed Critical Instytut Obrobki Plastycznej
Priority to DE7979100095T priority Critical patent/DE2965481D1/de
Publication of EP0048499A1 publication Critical patent/EP0048499A1/fr
Application granted granted Critical
Publication of EP0048499B1 publication Critical patent/EP0048499B1/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
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/08—Making machine elements axles or shafts crankshafts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/17—Crankshaft making apparatus

Definitions

  • the invention relates to a device for upsetting on presses, with two arranged between the head piece and the base, the forged material clamping and relative to the press table movably mounted transverse to the direction of the press ram stroke, divided dies, the lower and upper halves of which are arranged in a die holder and the holders of the upper and lower dies are coupled to one another, both die holders, which are located on one side of the die-dividing plane, being articulated on articulated levers, which in turn are mounted on the base frame, and the inner articulated levers, which are closer to the compression zone, on the lower die holders are articulated below the die parting plane, and the bearings of the outer articulated levers, which are further away from the compression zone, are supported on projections which are arranged on the upper surface of the underframe.
  • Devices for forging crank crankings by upsetting and bending a rod are known, in which the press ram by means of articulated levers with as a clamp baking is connected to form-fitting compression tools which move transversely to the direction of the press ram stroke.
  • the articulated levers are articulated on one side to a head piece arranged on the press ram and at the other end on the back of the upsetting tools above the parting plane of the clamping jaws.
  • DE-PS 1 301 297 discloses a device of the type mentioned above, in which the lower ends of the articulated levers are articulated on the upper upsetting tool halves above the parting plane of these tools.
  • the width of the articulated lever corresponds to the width of the upsetting tool halves.
  • Such a design of the device has the disadvantage that, due to the articulation of the lower ends of the articulated levers, only one side of the pair of forces occurs on one side of the tool division plane during the working stroke, which causes the uneven loading of the individual articulated levers.
  • the tools therefore have a tendency to "tip over".
  • the compressive force increases with the deflection of the articulated lever. With this deflection, however, the difference between the loads on the individual articulated levers and the moment of force that causes the upsetting tools to "tilt" increases.
  • the object underlying the invention is to eliminate the tilting of the upsetting tools and undesirable bending stresses.
  • the device according to the invention has the advantage that the beams forming the underframe are not bent, but are only pulled in the longitudinal direction. No moment of force acts on the compression matrices. The loads on the articulated levers are distributed more evenly than in known devices. This enables more accurate forging. In addition, the cost of materials required for the devices according to the invention is lower.
  • the device shown in the drawing consists of two assemblies, namely a lower and an upper.
  • the lower assembly has two bars 1 as a base, the outline of which is similar to an elongated letter H. These bars are connected to each other with spacer screws. These bars 1 are supported on a plate 2. Each bar 1 has two projections 1a on the upper surface and two further projections 1b on the lower surface. Two crossbars 3 are held on the lower projections 1b. A bearing roller 4 is seated on each of these beams 3. An articulated lever 5 is articulated on each bearing roller 4 and is designed in the shape of a fork or U. The lower bearing surface on the base of the articulated lever 5 is concave-cylindrical, whereas the upper bearing surfaces of the articulated lever 5 are convex-cylindrical.
  • Each articulated lever is connected and secured to the bearing rollers by two connecting members 6.
  • the links have that Shape of surprises.
  • the articulation point of each die holder 7 on the fork lever 5 is below the die parting plane P.
  • the die holder is secured to the articulated lever 5 by means of bolts 8 (FIG. 5).
  • a bearing roller 9 is attached to each lower die holder 7 above the die division plane P on both sides.
  • Analog bearing rollers 10 are provided on the upper surface of the beam 1 and on the upper projection 1a.
  • An articulated lever 11 is arranged between each of the bearing rollers 9 and 10. In the device, therefore, each lower die holder is articulated on two articulated levers 11 and an articulated lever 5 and forms a parallelogram guide with them and the bars.
  • Hydraulic cylinders 13 are fastened to the beam ends and are connected to the die holders 7 by means of pull cables. These traction ropes are guided by rollers 12. The cylinders 13 serve to return the die holder to the starting position up to the stop 15.
  • the upper assembly of the device consists of two upper beams 16, which are connected to each other with spacer screws.
  • the beams 16 are equipped with two horizontal guide pieces 16a, to which two upper die holders 18 are slidably attached. In their starting position, these die holders rest against stops 19.
  • the die holders have projections 18a, which serve as drivers and are coupled to the projections 7a of the lower die holder 7 during the working stroke. In this way, the die holders 7 and 18 are coupled.
  • the tool inserts are installed in the device.
  • the tool inserts 20 are installed in the lower die holder 7 and the tool inserts 21 in the upper die holder 18.
  • the device according to the invention operates as follows: in the open state, the part to be forged is placed in Drawing not shown material in the form of a rod on the lower tool inserts 20 and starts the press.
  • the press table 22 and the pressing are s s t Schemeel with .23 respectively.
  • the upper die holders 18 press onto the lower die holders 7. Because of the perpendicular deviation of the articulated levers 5 and 11 in the direction of the vertical plane of symmetry, and because of the movable arrangement of the upper die holders 18, the left and right dies are moved against each other in the horizontal direction .
  • the rod section located between the end faces of the two pairs of tool inserts 20, 21 is compressed.
  • the device can be used in vertical presses in the vertical position shown in the drawing, or in the reverse position. But it can also be installed in horizontal presses in a horizontal position.
EP81107830A 1978-01-14 1979-01-12 Dispositif à refouler sur des presses Expired EP0048499B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE7979100095T DE2965481D1 (en) 1978-01-14 1979-01-12 A method, slug and device for forging a crank shaft

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PL1978204016A PL112203B1 (en) 1978-01-14 1978-01-14 Method of and apparatus for forging crank throws
PL204016 1978-01-14
PL211132 1978-11-22
PL21113278A PL122409B1 (en) 1978-11-22 1978-11-22 Crank forging method and apparatus therefor

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP79100095.3 Division 1979-01-12

Publications (2)

Publication Number Publication Date
EP0048499A1 true EP0048499A1 (fr) 1982-03-31
EP0048499B1 EP0048499B1 (fr) 1984-07-25

Family

ID=26652894

Family Applications (2)

Application Number Title Priority Date Filing Date
EP81107830A Expired EP0048499B1 (fr) 1978-01-14 1979-01-12 Dispositif à refouler sur des presses
EP79100095A Expired EP0003139B1 (fr) 1978-01-14 1979-01-12 Procédé, produit brut et dispositif pour le forgeage d'un arbre de manivelle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP79100095A Expired EP0003139B1 (fr) 1978-01-14 1979-01-12 Procédé, produit brut et dispositif pour le forgeage d'un arbre de manivelle

Country Status (13)

Country Link
US (1) US4272979A (fr)
EP (2) EP0048499B1 (fr)
JP (1) JPS54148160A (fr)
AR (1) AR216206A1 (fr)
AT (1) AT362979B (fr)
BR (1) BR7900201A (fr)
CA (1) CA1106653A (fr)
DK (1) DK151533B (fr)
ES (2) ES476823A1 (fr)
FI (1) FI67795C (fr)
HU (1) HU180814B (fr)
IN (1) IN152965B (fr)
YU (1) YU1979A (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL121730B1 (en) * 1979-06-09 1982-05-31 Instytut Obrobki Plastycznej Forging apparatus
US4517717A (en) * 1983-12-05 1985-05-21 Gentry Elvin O Crankshaft inspection apparatus and method
PL141712B1 (en) * 1983-12-13 1987-08-31 Instytut Obrobki Plastycznej Method of and apparatus for press forging of crankshafts
GB2232623A (en) * 1988-11-25 1990-12-19 Sverdlovsky Inzh Ped I Device for cyclic deformation of continuous strip
PL187876B1 (pl) * 1999-03-05 2004-10-29 Inst Obrobki Plastycznej Urządzenie do kucia przez spęczanie
EP1213565B1 (fr) 2000-07-31 2005-10-19 Nippon Seiki Co., Ltd. Dispositif d'eclairage
US20070056345A1 (en) * 2005-09-09 2007-03-15 Showa Denko K.K. Upsetting method and upsetting apparatus
JP4854564B2 (ja) * 2007-03-30 2012-01-18 リズム時計工業株式会社 照明装置
BR112015013289A2 (pt) * 2012-12-12 2017-07-11 Nippon Steel & Sumitomo Metal Corp aparelho para formar esboço para forjamento para eixo de manivela para motor de três cilindros e método para fabricar eixo de manivela forjado para motor de três cilindros com o uso do mesmo
CN103551850B (zh) * 2013-11-14 2016-08-17 重庆应国机械制造有限责任公司 单拐全纤维曲轴锻件的闭式挤压锻造工艺
DE102014212732B4 (de) * 2014-07-01 2022-02-24 Sms Group Gmbh Verfahren und Anstauchvorrichtung zum Herstellen von abgesetzten Werkstücken, wie Wellen oder Stäbe
US10654092B2 (en) * 2015-05-14 2020-05-19 Neturen Co., Ltd. Method and apparatus for manufacturing stepped member
CN113059102B (zh) * 2021-03-15 2023-12-01 中机精密成形产业技术研究院（安徽）股份有限公司 一种经编机用梳栉吊架底座的多工位锻造方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827685A (en) * 1952-07-24 1958-03-25 English Steel Corp Ltd Apparatus for forging crank-shafts and like work-pieces
DE1301297B (de) * 1964-09-02 1969-08-21 Ts Lab Obro Bki Plastycznej Vorrichtung fuer das Stauchen laenglicher Werkstuecke auf Pressen
DE2236733A1 (de) * 1971-07-31 1973-02-15 Inst Obrobki Plastycznej Verfahren und vorrichtung zum schmieden verschiedener formteile aus laenglichen staeben
DE2303451B1 (de) * 1973-01-25 1974-07-25 Eumuco Ag Fuer Maschinenbau, 5090 Leverkusen Vorrichtung zum Schmieden von Kurbelwellen,· Flanschwellen u.dgl. mittels einer Schmiedepresse
DE2610568A1 (de) * 1975-03-15 1976-09-23 Inst Obrobki Plastycznej Verfahren und vorrichtungen zur herstellung von kurbelhueben fuer halbgebaute kurbelwellen

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR779043A (fr) * 1933-12-20 1935-03-28 Cie Forges Et Acieries Marine Procédé pour le forgeage d'essieux ou arbres coudés, et organes mécaniques analogues
US2743500A (en) * 1950-12-07 1956-05-01 Erie Forge Company Forging method and apparatus
DE957007C (de) * 1954-02-09 1957-01-24 Schloemann Ag Verfahren und Vorrichtung zum Schmieden von mehrhuebigen Kurbelwellen
US2959840A (en) * 1955-02-21 1960-11-15 Baldwin Lima Hamilton Corp Apparatus for forging crankshafts
FR1166199A (fr) * 1956-02-23 1958-11-04 Schloemann Ag Dispositif pour le forgeage graduel des coudes de vilebrequins
FR1166978A (fr) * 1956-02-24 1958-11-18 Schloemann Ag Dispositif pour le forgeage de vilebrequins
US3129488A (en) * 1960-05-20 1964-04-21 Schloemann Ag Progressive forging of multi-throw crankshafts
US3348407A (en) * 1963-10-02 1967-10-24 Ts Lab Obrobki Plastycznej Device and particularly forging apparatus for simultaneous upsetting and bending of material like bars, rods or ingots
CS184303B2 (en) * 1968-07-19 1978-08-31 Gabriel Ruget Equipment for forging of crankshafts and other similar products
JPS4924337A (fr) * 1972-06-27 1974-03-04
JPS5139553A (ja) * 1974-10-01 1976-04-02 Kobe Steel Ltd Kurankusuroonokatairetanzosochi

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2827685A (en) * 1952-07-24 1958-03-25 English Steel Corp Ltd Apparatus for forging crank-shafts and like work-pieces
DE1301297B (de) * 1964-09-02 1969-08-21 Ts Lab Obro Bki Plastycznej Vorrichtung fuer das Stauchen laenglicher Werkstuecke auf Pressen
DE2236733A1 (de) * 1971-07-31 1973-02-15 Inst Obrobki Plastycznej Verfahren und vorrichtung zum schmieden verschiedener formteile aus laenglichen staeben
DE2303451B1 (de) * 1973-01-25 1974-07-25 Eumuco Ag Fuer Maschinenbau, 5090 Leverkusen Vorrichtung zum Schmieden von Kurbelwellen,· Flanschwellen u.dgl. mittels einer Schmiedepresse
DE2610568A1 (de) * 1975-03-15 1976-09-23 Inst Obrobki Plastycznej Verfahren und vorrichtungen zur herstellung von kurbelhueben fuer halbgebaute kurbelwellen

Also Published As

Publication number Publication date
ATA23579A (de) 1980-11-15
JPS54148160A (en) 1979-11-20
ES476824A1 (es) 1979-06-16
DK151533B (da) 1987-12-14
JPS5653455B2 (fr) 1981-12-18
FI790099A (fi) 1979-07-15
US4272979A (en) 1981-06-16
CA1106653A (fr) 1981-08-11
AT362979B (de) 1981-06-25
IN152965B (fr) 1984-05-12
EP0003139A1 (fr) 1979-07-25
BR7900201A (pt) 1979-08-14
DK13979A (da) 1979-07-15
EP0003139B1 (fr) 1983-05-25
FI67795B (fi) 1985-02-28
YU1979A (en) 1983-02-28
FI67795C (fi) 1985-06-10
HU180814B (en) 1983-04-29
EP0048499B1 (fr) 1984-07-25
ES476823A1 (es) 1979-07-16
AR216206A1 (es) 1979-11-30

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