EP0027247B1 - Stanzwerkzeug - Google Patents

Stanzwerkzeug Download PDF

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Publication number
EP0027247B1
EP0027247B1 EP80106087A EP80106087A EP0027247B1 EP 0027247 B1 EP0027247 B1 EP 0027247B1 EP 80106087 A EP80106087 A EP 80106087A EP 80106087 A EP80106087 A EP 80106087A EP 0027247 B1 EP0027247 B1 EP 0027247B1
Authority
EP
European Patent Office
Prior art keywords
tool
punching
material strip
punching tool
separation
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
EP80106087A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0027247A1 (de
Inventor
Jan Czudek
Stefan Gadzinski
Przemyslaw Wasilewski
Ryszard Czarnecki
Wieslaw Tomaszkiewicz
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.)
Politechnika Lodzka
Original Assignee
Politechnika Lodzka
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 Politechnika Lodzka filed Critical Politechnika Lodzka
Priority to AT80106087T priority Critical patent/ATE8114T1/de
Publication of EP0027247A1 publication Critical patent/EP0027247A1/de
Application granted granted Critical
Publication of EP0027247B1 publication Critical patent/EP0027247B1/de
Expired 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/08—Dies with different parts for several steps in a process

Definitions

  • the invention relates to a simultaneous punching tool for punching out rotationally symmetrical hollow bodies from square-shaped blanks according to the preamble of claim 1.
  • a punching tool is known from PL-PS 93188, which is essentially equipped with a drawing die, a drawing punch and a differentiated hold-down device.
  • the differentiated hold-down consists of a pressure ring in which four axially displaceable semicircular segments are arranged.
  • the segments and the pressure ring are supported by two independent pressure springs, whereby a higher contact force is exerted on the segments than on the pressure ring.
  • the material is held in places where depressions have hitherto formed during deep drawing via the segments with greater force than at the other points. This results in an increase in the height of the compact and a compensation of the walls on the circumference.
  • the corners of the square blank of the board prevent the material from flowing regularly into the drawn part.
  • a compact produced in this way requires pre-trimming of the corners of the flange before the further machining process.
  • DE-A-2 753 800 also discloses a method for producing a deep-drawn part from a square plate, in which the protruding corners are also cut off in the second method step.
  • the object of the invention is to provide a punching tool with which a design of the blank is possible in such a way that a compact can be produced without pre-cutting for the subsequent operation, that is to say a hollow body with an angular flange.
  • two triangular punches 2 are fastened, which are intended for punching out essentially triangular recesses on the sides b of the material strip a together with the dies 3 which are attached in the lower tool plate 4.
  • a drawing die 5 is also attached, in which the sheet metal piece is formed and the outer contour of which forms the upper cutting knife 6 for cutting the tape a at point c.
  • a drawing punch 7 with a differentiated hold-down 8 and a cutting knife 9, which together with the cutting knife 6 serves to cut the tape a at point c.
  • the band a is punched out on both sides b with the punches 2 and dies 3 in the first working cycle.
  • the upper cutting knife 6 cuts off the tape a at the point c with the help of the lower cutting knife 9, a compact d being simultaneously formed by the drawing die 5 and the drawing punch 7 in cooperation with the differentiated hold-down 8.
  • the compact d is shifted to the second working stage, while at the same time the next push of the material strip a takes place by a corresponding stroke.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
EP80106087A 1979-10-11 1980-10-07 Stanzwerkzeug Expired EP0027247B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106087T ATE8114T1 (de) 1979-10-11 1980-10-07 Stanzwerkzeug.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL218910 1979-10-11
PL1979218910A PL122555B3 (en) 1979-10-11 1979-10-11 Stamping die

Publications (2)

Publication Number Publication Date
EP0027247A1 EP0027247A1 (de) 1981-04-22
EP0027247B1 true EP0027247B1 (de) 1984-06-27

Family

ID=19998862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106087A Expired EP0027247B1 (de) 1979-10-11 1980-10-07 Stanzwerkzeug

Country Status (6)

Country Link
EP (1) EP0027247B1 (pl)
AT (1) ATE8114T1 (pl)
CS (1) CS227314B2 (pl)
DD (1) DD153526A5 (pl)
DE (1) DE3068365D1 (pl)
PL (1) PL122555B3 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1251087B (it) * 1991-07-22 1995-05-04 Whirlpool Italia Metodo per l'ottenimento mediante stampaggio di un organo d'appoggio, in particolare, di usuali sospensioni di un motore elettrico in un motocompressore di tipo ermetico ed organo d'appoggio cosi' ottenuto.
CN106111802A (zh) * 2016-08-31 2016-11-16 成都宏明双新科技股份有限公司 一种纵向圈圆成型精密级进模

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1768294A (en) * 1930-06-24 of cleveland
CH189200A (de) * 1935-10-15 1937-02-15 Albert Chappuis John Schnellpresse.
US2332478A (en) * 1942-04-27 1943-10-19 Anthes Force Oiler Company Method of making lamp sockets
US2361687A (en) * 1943-02-05 1944-10-31 Owens Illinois Can Company Punch press
US2765760A (en) * 1951-12-27 1956-10-09 Lyon George Albert Method of press-forming and cutting articles from strip
US2918721A (en) * 1953-03-12 1959-12-29 Sylvania Electric Prod Process for fabricating a socket mount
US2989936A (en) * 1957-06-28 1961-06-27 Torrington Mfg Co Method for forming end plates and end rings
DE2500138A1 (de) * 1975-01-03 1976-07-08 Hestermann Gerhard Kombiniertes fertigungs- und oberflaechenbehandlungsverfahren
PL93188B1 (pl) * 1975-06-02 1977-05-30
PL101963B1 (pl) * 1976-12-02 1979-02-28 Method of pressing articles having surface-of-revolution mantles,by means of transfer presses

Also Published As

Publication number Publication date
EP0027247A1 (de) 1981-04-22
DE3068365D1 (en) 1984-08-02
ATE8114T1 (de) 1984-07-15
CS227314B2 (en) 1984-04-16
PL218910A3 (pl) 1981-04-24
DD153526A5 (de) 1982-01-13
PL122555B3 (en) 1982-08-31

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