EP0336862B1 - Verfahren zur Herstellung einer äusseren Schrägkante an einem zylindrischen Ziehteil - Google Patents

Verfahren zur Herstellung einer äusseren Schrägkante an einem zylindrischen Ziehteil Download PDF

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Publication number
EP0336862B1
EP0336862B1 EP89420120A EP89420120A EP0336862B1 EP 0336862 B1 EP0336862 B1 EP 0336862B1 EP 89420120 A EP89420120 A EP 89420120A EP 89420120 A EP89420120 A EP 89420120A EP 0336862 B1 EP0336862 B1 EP 0336862B1
Authority
EP
European Patent Office
Prior art keywords
punch
die
truncated cone
shape
chamfer
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
EP89420120A
Other languages
English (en)
French (fr)
Other versions
EP0336862A1 (de
Inventor
Gérard Lavorel
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.)
A2C Groupe Pratic Ademva
Original Assignee
A2C Groupe Pratic Ademva
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 A2C Groupe Pratic Ademva filed Critical A2C Groupe Pratic Ademva
Priority to AT89420120T priority Critical patent/ATE81804T1/de
Publication of EP0336862A1 publication Critical patent/EP0336862A1/de
Application granted granted Critical
Publication of EP0336862B1 publication Critical patent/EP0336862B1/de
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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles

Definitions

  • the present invention relates to a method for producing an external chamfer on a stamped cylindrical part.
  • Such an external chamfer is conventionally produced by a resumption in turning of the straight edge of the stamped part, this resumption being carried out by means of a tool which removes chips in sufficient quantity to produce the chamfer.
  • the part to be obtained 1 is a cup whose bottom 5 is pierced with an orifice 2 for the passage of a drive shaft, and whose edge is provided with an external chamfer 3 This chamfer 3 is practically essential for carrying out the introduction of the cup 1 into an associated bore.
  • FIGS 2 to 6 show the essential successive stages in the manufacture of the cup 1.
  • the first operation is performed on a first station. It consists of cutting, in a very conventional manner between punch and die, a metal disc 4 of diameter much larger than that of the cup 3.
  • This disc 4 is then transferred to another station, where is carried out, FIG. 3, a conical pre-stamping of this disc 4, the angle at the top ⁇ of the pre-stamping cone being equal to that of the chamfer to be obtained, while is provided , at the periphery of this stamped, a flat edge.
  • the tool is shaped so that the small base 5 of the truncated cone 6 obtained has the same diameter as the bottom of the cup to be obtained, and that its flank or apothem 7 has a constant length L substantially equal to the height H (FIG. 1) of this cup.
  • the part 6 is then transferred to another station, comprising a guillotine shears with circular periphery which axially cuts, in the vertical direction 8, the external periphery of the frustoconical stamp 6.
  • the outer edge 9 of the stamped part 6 forms an angle equal to the above-mentioned value ⁇ with its flank or apothem 7.
  • the stamp 6 is then transferred to a fourth station, where its side 7 is straightened axially, that is to say vertically: this side 7 then becomes circular cylindrical and perpendicular to the bottom 5 of the stamp.
  • This side 7 is then provided with an external chamfer 3 of angle ⁇ , which is the result that we aim to obtain.
  • the piece 6 obtained is then optionally passed through a calibration station, then is made, on a last station ( Figure 6), the central hole 2 for passage of the drive shaft of the cup.
  • the tools used for cutting the disc 4 ( Figure 2) and for drilling the hole 2 ( Figure 6) are conventional tools operating as a cookie cutter. They are therefore not represented.
  • FIG. 7 shows the tool used for stamping, according to FIG. 3, the frustoconical part 6 from the disc 4.
  • This tool comprises a complementary punch 10 and a matrix 11, of frustoconical shape.
  • a conventional sidewall press 12 comes to press strongly on the periphery of the disc 4 in order to maintain it during stamping, which prevents the material from wrinkling.
  • an extraction pusher 24, pushed upwards by an axial spring 13, equips the die 11.
  • FIG. 8 The tool allowing the axial sectioning, according to FIG. 4, of the periphery of the stamping 6, is represented in FIG. 8. It is a circular cutting tool comprising a circular cylindrical punch 14, an associated die 15, a press -wall 16, and an extraction pusher 17 pushed back by a spring 18.
  • the tool used for straightening according to FIG. 5 is represented in FIG. 9. It comprises a beveled flank press 19, a circular cylindrical matrix, of diameter D equal to the external diameter of the cup 1 to be obtained, a pusher 21 with spring. 22, and a circular cylindrical punch 23, of diameter d equal to the inside diameter of the aforementioned cup 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Metal Extraction Processes (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Processing Of Meat And Fish (AREA)
  • Adornments (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Claims (4)

  1. Verfahren zur Herstellung einer äußeren Schrägkante (3) an einem zylindrischen Hohlteil, ausgehend von einem ebenen Metallblech,
    dadurch gekennzeichnet,
    - daß zunächst eine konische Vorhöhlung (6) des herzustellenden Teils unter Verwendung eines Stempels (10) hergestellt wird, dessen Höhlung die Form -eines Kegelstumpfes hat, dessen Konuswinkel (α) im wesentlichen gleich demjenigen der herzustellenden Schrägkante (3) ist, einschließlich einem ebenen Umfangsflansch,
    - worauf der Umfang des kegelstumpfförmigen Hohlteils (6) axial geschnitten wird,
    - daß in einem letzten Schritt die kegelstumpfförmige Seitenwand (7) des Hohlteils (6) aufgerichtet wird zwecks Herstellung einer Schale (1) mit koaxialer Wand, deren Kante nunmehr eine äußere Schrägkante (3) hat.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß der Flansch oder die Fläche (7) des Kegelstumpfs (6) eine konstante Länge hat, die im wesentlichen gleich der Höhe (H) der herzustellenden Schale (1) ist, und daß die kleine Basis (5) dieses Teils einen Durchmesser gleich demjenigen des Bodens der Schale (1) hat.
  3. Verfahren nach Anspruch 1 oder 2,
    dadurch gekennzeichnet,
    daß die drei Verfahrensschritte nacheinander an drei unterschiedlichen Stationen durchgeführt werden, die jeweils ein Werkzeug mit Stempel und Matrize haben, wobei ein Transport von einer Station zur nächsten durchgeführt wird.
  4. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die erste Phase durch ein Ausbauchen zwischen einem Stempel (10) und einer kegelstumpfförmigen Matrize (11) durchgeführt wird, daß die zweite Phase durch einen Stempel (14) und einer Matritze (15) durchgeführt wird, die einen Schneidvorgang ausüben, und daß die dritte Phase unter Verwendung eines abgeschrägten Preßflansches (19), eines Stempels (23) und einer Matrize (20) durchgeführt wird, die zylindrisch sind, wobei der Stempel (23) einen Durchmesser (d) hat, der kleiner ist als derjenige (D) der Matrize (20).
EP89420120A 1988-04-06 1989-03-31 Verfahren zur Herstellung einer äusseren Schrägkante an einem zylindrischen Ziehteil Expired - Lifetime EP0336862B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420120T ATE81804T1 (de) 1988-04-06 1989-03-31 Verfahren zur herstellung einer aeusseren schraegkante an einem zylindrischen ziehteil.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804971 1988-04-06
FR8804971A FR2629742B1 (fr) 1988-04-06 1988-04-06 Procede de realisation d'un chanfrein exterieur sur une piece cylindrique emboutie

Publications (2)

Publication Number Publication Date
EP0336862A1 EP0336862A1 (de) 1989-10-11
EP0336862B1 true EP0336862B1 (de) 1992-10-28

Family

ID=9365324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420120A Expired - Lifetime EP0336862B1 (de) 1988-04-06 1989-03-31 Verfahren zur Herstellung einer äusseren Schrägkante an einem zylindrischen Ziehteil

Country Status (8)

Country Link
US (1) US4910989A (de)
EP (1) EP0336862B1 (de)
AT (1) ATE81804T1 (de)
CA (1) CA1289418C (de)
DE (1) DE68903291T2 (de)
ES (1) ES2035619T3 (de)
FR (1) FR2629742B1 (de)
GR (1) GR3006221T3 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466958B1 (de) * 1990-07-19 1992-06-03 Degussa Aktiengesellschaft Oberflächenmodifizierte Siliciumdioxide
US5755132A (en) * 1996-02-26 1998-05-26 Karl Marbach Gmbh & Co. Punching and forming tool
DE29611523U1 (de) * 1996-02-26 1996-08-29 Karl Marbach GmbH & Co., 74080 Heilbronn Stanz- und Formwerkzeug
CA2675504A1 (en) * 2005-10-11 2007-04-19 Iron Mount Corporation Containers and method and apparatus for forming containers
CN101628409B (zh) * 2008-07-15 2011-06-22 施俊兆 金属工具盒的成型方法
CN102139436B (zh) * 2010-01-29 2013-08-14 江苏白雪电器股份有限公司 一种金属防护罩的加工方法
CN102615184A (zh) * 2012-04-04 2012-08-01 无锡欧易博阀业科技有限公司 盘状工件拉伸模具
CN102974976A (zh) * 2012-11-15 2013-03-20 重庆黄龙机械制造有限公司 金属周转箱的制作方法
CN104428102A (zh) * 2013-03-04 2015-03-18 丁玉武 一种汽车钢圈轮辐生产制造工艺及其专用模具
CN104384844A (zh) * 2014-10-08 2015-03-04 柳州科尔特锻造机械有限公司 一种工程机械钢圈轮辐生产工艺
CN111822942B (zh) * 2019-04-22 2022-04-29 安克创新科技股份有限公司 装饰网的加工方法
CN112808858B (zh) * 2021-01-25 2022-11-15 重庆理工大学 用于制作弹簧抱挎的级进模

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US161634A (en) * 1875-04-06 Improvement in methods of producing flanged lids and collars for sheet-metal cans
US448748A (en) * 1891-03-24 Method of and machine for making cup-shaped articles
US2321085A (en) * 1941-11-06 1943-06-08 Electromaster Inc Method for producing drawn cups with faced and beveled edges
US2415940A (en) * 1944-10-05 1947-02-18 Remington Arms Co Inc Metal cupping process
US2611475A (en) * 1948-10-07 1952-09-23 Remington Arms Co Inc Cup drawing apparatus
US3406554A (en) * 1965-07-06 1968-10-22 Continental Can Co Apparatus for and method of forming containers
DE1932139A1 (de) * 1969-06-25 1971-01-21 Dynamit Nobel Ag Verfahren zur Herstellung tiefgezogener Hohlkoerper
SU590053A1 (ru) * 1976-05-10 1978-01-30 Ижевский механический институт Способ получени кольцевых деталей
SU1016008A1 (ru) * 1980-07-14 1983-05-07 Предприятие П/Я М-5344 Способ получени полых изделий с выступом на дне
US4534201A (en) * 1982-12-29 1985-08-13 American Can Company Undercut punch to control ironing

Also Published As

Publication number Publication date
US4910989A (en) 1990-03-27
DE68903291T2 (de) 1993-06-17
GR3006221T3 (de) 1993-06-21
ES2035619T3 (es) 1993-04-16
EP0336862A1 (de) 1989-10-11
ATE81804T1 (de) 1992-11-15
FR2629742B1 (fr) 1994-01-14
FR2629742A1 (fr) 1989-10-13
CA1289418C (fr) 1991-09-24
DE68903291D1 (de) 1992-12-03

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