EP0017920B1 - Schnittwerkzeug zum Ausschneiden eines Blechzuschnittes - Google Patents

Schnittwerkzeug zum Ausschneiden eines Blechzuschnittes Download PDF

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Publication number
EP0017920B1
EP0017920B1 EP80101931A EP80101931A EP0017920B1 EP 0017920 B1 EP0017920 B1 EP 0017920B1 EP 80101931 A EP80101931 A EP 80101931A EP 80101931 A EP80101931 A EP 80101931A EP 0017920 B1 EP0017920 B1 EP 0017920B1
Authority
EP
European Patent Office
Prior art keywords
cutting
sheet
cutting die
die
edge
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
EP80101931A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0017920A1 (de
Inventor
Jan Czudek
Stefan Gadzinski
Przemyslaw Wasilewski
Ryszard Czarnecki
Andrzej Konior
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 AT80101931T priority Critical patent/ATE3377T1/de
Publication of EP0017920A1 publication Critical patent/EP0017920A1/de
Application granted granted Critical
Publication of EP0017920B1 publication Critical patent/EP0017920B1/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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching

Definitions

  • the invention relates to a cutting tool according to the preamble of the claim.
  • punching tools which consist of a cutting die with a round opening and a cylindrical punch.
  • the sheet is fed to the punching tool in the form of a sheet, a strip or a strip. With this, the blanks are produced in a round shape, while the remaining material is waste.
  • Punching tools are known from Polish Patent Nos. 93 188 and 63 723, with which square blanks can be produced and which comprise a cutting die and a drawing sleeve, the outer profile of which forms the cutting punch and the inner opening of which, together with a drawing punch, represents the press part.
  • Stamping tools which produce square sheet metal blanks and workpieces from them, require a further operation, which consists in trimming the corners of the blanks, since such corners make the further pressing process difficult.
  • blanks can be produced which have an optimal shape, namely correspond to a square with corners cut along an arc line.
  • the cuts created ensure a technically simple and inexpensive pressing process, enable better flow of the material during pressing, which creates pressed parts with a greater height, uniform wall thickness and good quality, allow the use of a smaller, uniform flange pressure and do not require pre-cutting the flange as in the case of square sheet metal blanks.
  • the cutting tool consists of an annular cutting die with an opening whose diameter is larger than the width of the strip to be cut 2.
  • the die 1 is equipped with an insert 3 consisting of a flat plate, the cutting edge of which is perpendicular to the direction of feed of the strip 2, the opening of the Dies limited by 1 secant.
  • the length a of the cutting edge of the insert 3 corresponds to the length of the secant b formed between the longitudinal edge of the strip lying in the cutting tool and the opening of the die 1.
  • the cutting tool has a cylindrical punch 4, the jacket of which has a flattened face on one side which cooperates with the insert 3 of the die 1 when the die 4 is moved into the opening of the die 1.
  • the width of the flattening of the punch 4 corresponds essentially to the length a of the cutting edge of the insert 3 of the die 1.
  • a feed cylinder 5 with a counter cylinder is provided.
  • the feed stroke of the feed cylinder 5 corresponds to the width of the processed strip 2.
  • the material strip 2 is fed to the cutting tool by means of the feed cylinder 5.
  • the blank c shown in FIG. 4 is cut off from the strip 2 in the die 1.
  • the outer contour of the blank c has a shape approximating a square corresponding to the inner opening of the die 1 with the insert 3.
  • the cutting tool described is used to produce optimally shaped blanks from metal or plastic sheets, which are intended for the subsequent pressing of workpieces on single-acting and / or multi-stage presses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Punching Or Piercing (AREA)
EP80101931A 1979-04-13 1980-04-10 Schnittwerkzeug zum Ausschneiden eines Blechzuschnittes Expired EP0017920B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80101931T ATE3377T1 (de) 1979-04-13 1980-04-10 Schnittwerkzeug zum ausschneiden eines blechzuschnittes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL1979214925A PL122194B1 (en) 1979-04-13 1979-04-13 Blanking die
PL214925 1979-04-13

Publications (2)

Publication Number Publication Date
EP0017920A1 EP0017920A1 (de) 1980-10-29
EP0017920B1 true EP0017920B1 (de) 1983-05-18

Family

ID=19995738

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80101931A Expired EP0017920B1 (de) 1979-04-13 1980-04-10 Schnittwerkzeug zum Ausschneiden eines Blechzuschnittes

Country Status (6)

Country Link
EP (1) EP0017920B1 (enrdf_load_stackoverflow)
AT (1) ATE3377T1 (enrdf_load_stackoverflow)
CS (1) CS222173B2 (enrdf_load_stackoverflow)
DD (1) DD150014A5 (enrdf_load_stackoverflow)
DE (1) DE3063261D1 (enrdf_load_stackoverflow)
PL (1) PL122194B1 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2308343C2 (ru) * 2005-07-18 2007-10-20 Открытое акционерное общество "АВТОВАЗ" Способ малоотходной вырубки заготовки из карточки (варианты)
RU2295414C1 (ru) * 2005-07-18 2007-03-20 Открытое акционерное общество "АВТОВАЗ" Способ малоотходной вырубки заготовки из ленты, широкого рулона или полосы (варианты)
RU2523641C2 (ru) * 2012-08-01 2014-07-20 Открытое акционерное общество "АВТОВАЗ" Способ малоотходной двухрядной вырубки заготовок из ленты (варианты)
RU2529130C2 (ru) * 2012-12-04 2014-09-27 Открытое акционерное общество "АВТОВАЗ" Способ малоотходной однорядной вырубки заготовок из ленты, широкого рулона или полосы
RU2529263C2 (ru) * 2012-12-10 2014-09-27 Общество с ограниченной ответственностью "Научно-производственное объединение "Компания "Сивик" Приспособление для правки полок обода колеса (варианты)
PL3515622T3 (pl) * 2016-09-26 2021-01-11 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Narzędzie oraz obrabiarka, jak również sposób cięcia i/lub odkształcania przedmiotów obrabianych mających postać płyt
CN119327974B (zh) * 2024-12-20 2025-04-11 宁波震裕汽车部件有限公司 嵌入式送料冲压工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL93188B1 (enrdf_load_stackoverflow) * 1975-06-02 1977-05-30

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1800531A (en) * 1929-02-13 1931-04-14 American Can Co Method of producing one-piece drawn containers
DE2209927C3 (de) * 1971-03-19 1978-06-08 Maurice Desire Lucien Ans Lachaussee (Belgien) Verfahren zum metallsparenden Herstellen von Tiefziehteilen aus Ronden
PL101963B1 (pl) * 1976-12-02 1979-02-28 Method of pressing articles having surface-of-revolution mantles,by means of transfer presses

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL93188B1 (enrdf_load_stackoverflow) * 1975-06-02 1977-05-30

Also Published As

Publication number Publication date
ATE3377T1 (de) 1983-06-15
DE3063261D1 (en) 1983-07-07
PL122194B1 (en) 1982-06-30
PL214925A2 (enrdf_load_stackoverflow) 1980-03-10
DD150014A5 (de) 1981-08-12
CS222173B2 (enrdf_load_stackoverflow) 1983-05-27
EP0017920A1 (de) 1980-10-29

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