EP1815922A1 - Procédé et outil pour le découpage fin de pièces ayant des petits rayons de coin et une profondeur fortement reduite en un seule étape - Google Patents

Procédé et outil pour le découpage fin de pièces ayant des petits rayons de coin et une profondeur fortement reduite en un seule étape Download PDF

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Publication number
EP1815922A1
EP1815922A1 EP06090018A EP06090018A EP1815922A1 EP 1815922 A1 EP1815922 A1 EP 1815922A1 EP 06090018 A EP06090018 A EP 06090018A EP 06090018 A EP06090018 A EP 06090018A EP 1815922 A1 EP1815922 A1 EP 1815922A1
Authority
EP
European Patent Office
Prior art keywords
cutting
tool
punch
geometry
workpiece
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
EP06090018A
Other languages
German (de)
English (en)
Other versions
EP1815922B1 (fr
Inventor
Willi Dipl.-Ing. Grimm
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.)
Feintool Intellectual Property AG
Original Assignee
Feintool Intellectual Property 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
Priority to DK06090018T priority Critical patent/DK1815922T3/da
Application filed by Feintool Intellectual Property AG filed Critical Feintool Intellectual Property AG
Priority to EP06090018A priority patent/EP1815922B1/fr
Priority to PT06090018T priority patent/PT1815922E/pt
Priority to PL06090018T priority patent/PL1815922T3/pl
Priority to ES06090018T priority patent/ES2320372T3/es
Priority to AT06090018T priority patent/ATE420741T1/de
Priority to SI200630216T priority patent/SI1815922T1/sl
Priority to DE502006002645T priority patent/DE502006002645D1/de
Priority to CA2640211A priority patent/CA2640211C/fr
Priority to JP2008552759A priority patent/JP2009525184A/ja
Priority to US12/223,570 priority patent/US10022770B2/en
Priority to PCT/EP2007/001106 priority patent/WO2007090658A1/fr
Priority to KR1020087019253A priority patent/KR20080091798A/ko
Priority to CN2007800043772A priority patent/CN101378859B/zh
Publication of EP1815922A1 publication Critical patent/EP1815922A1/fr
Application granted granted Critical
Publication of EP1815922B1 publication Critical patent/EP1815922B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/14—Punching tools; Punching dies
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/24—Cutters, for shaping with chip breaker, guide or deflector
    • Y10T407/245—Cutters, for shaping with chip breaker, guide or deflector comprising concave surface in cutting face of tool

Definitions

  • the invention relates to a method for producing workpieces with small in relation to the cutting thickness corner radii and massively reduced indentation in a fineblanking tool of a fine cutting machine, in which the workpiece between two tool parts from each of an upper and lower cutting plate and an upper and a lower cutting punch is clamped and the cutting takes place in cooperation with the upper and lower cutting dies.
  • the invention further relates to a tool for fine cutting of workpieces with small in relation to the cutting thickness corner radii and massively reduced indentation from a punched strip, a board, a coil material o.
  • a tool for fine cutting of workpieces with small in relation to the cutting thickness corner radii and massively reduced indentation from a punched strip, a board, a coil material o. The like.
  • two latter clamping tool halves which are composed of at least one respective cutting plate and a cutting punch.
  • the ratio of a geometric size describing the cutting lines to the sheet thickness results in the fine-cutting difficulty, which increases with increasing sheet thickness. This means that fineblanking of large-area thin parts is easier than fineblanking narrow webs or rings with large sheet thicknesses. Likewise, obtuse-angled corners with large radii can be better fine-cut than acute-angled ones with small radii.
  • From the DE 39 31 320 C1 is a method for producing burr-free workpieces by punch-counter cutting, For example, in a fine cutting tool, wherein a punching strip from which the workpiece is to be cut, between two tool parts of an upper and a lower cutting plate and an upper and lower cutting punch is clamped and the cutting takes place in cooperation with an upper and lower cutting punch, wherein the workpiece is cut along a cutting line and cut in the opposite direction.
  • this prior art shows the intentional counter-cutting on both sides.
  • Typical features of fine cut parts are edge indentation and cutting degree.
  • corner parties indenting, which increases with decreasing corner radius and increasing sheet thickness.
  • the insertion depth can be approx. 20% and the feed width of 30% of the sheet thickness or more (see DIN 3345, fineblanking, Aug. 1980).
  • This feeder is thus dependent on material thickness and quality, so that its Control is limited and often brings a limitation of the part function, for example, by a lack of sharp edges of the corners in the case of gearing parts or by the caused change in the functional length of the parts, brings with it.
  • the present invention seeks to improve a method and a tool for the manufacture of workpieces so that the fine blanking on parts with small corner radii and sharp corners with larger sheet thickness without Functional restriction of the parts can be applied while ensuring economic benefits.
  • the solution according to the invention is characterized in that fineblanking is also economically applicable to parts of parts with small corner radii and sharp edge regions, for example toothed parts of greater thickness. It is based on the principle of different cutting direction of the part geometry, which converge without corner radius.
  • the part to be cut is therefore composed of at least two cutting geometries, for example a circular geometry and a tooth geometry, wherein the fine-blanking process takes place in a single-stage arrangement.
  • the tip circle of the toothing part is cut out of the punching strip in the vertical working direction. This is followed by the cutting out of the tooth spaces in the first sub-step opposite working direction.
  • the particular advantage of the method according to the invention is the fact that the converging tool geometries are not pressure-loaded simultaneously and not in the same direction.
  • the pressure loads in the corner region of the workpieces can be significantly reduced so that complicated parts geometries can also be produced of greater thickness with sharp edges, massively reduced indentation and precise functional length by fineblanking.
  • the method and tool according to the invention requires only a single-stage arrangement and furthermore makes it possible to minimize the use of multi-stage production processes, as a result of which the fine-blanking process becomes more economical even for complicated parts of greater thickness.
  • FIG. 3 is a simplified schematic representation of the tool according to the invention in the execution of the first substep of the method according to the invention
  • FIG. 5 shows the section of the sectional surface geometry of a toothing part produced by the method according to the invention in an enlarged perspective view.
  • the method according to the invention is intended to produce a workpiece 1, here a toothed part of greater thickness d, for example of 6.5 mm, by fine blanking from a stamped strip 2 .
  • the basic structure of the fineblanking tool 3 corresponds to the known prior art. On a detailed presentation can therefore be omitted. In the following, therefore, only the special features of the tool are highlighted.
  • FIGS. 1 and 2 show those of the prior art DE 39 31 320 C1 Her known cut geometry of a finely cut and a counter-felted part 4 and 5, respectively .
  • the finely cut part 4 has a Kanteneinzugszone 6, a smooth cut zone 7 and a ridge. 8 on, wherein the latter is located on the side facing away from the Kanteneinzugszone 6 side. It can be seen from the sectional geometry of the counter-cut part 5 that a double-sided edge retraction 9 is produced during counter-fine cutting, as a result of which parts with sharp edges, such as gearing parts, can not be manufactured with the necessary dimensional accuracy and accuracy.
  • the single-stage fineblanking tool 3 has - as shown in FIGS. 3, 4 and 5 - a multistage main punch 10 .
  • the strip material 2 to be cut is clamped between a hold-down 11 and a cutting plate 12 . It has the thickness d, here 6.5 mm.
  • the main punch 10, which is designed according to its geometry to be produced to the toothing part 1 , cuts in the first step A a circuit board 13 (semi-finished) with a, adapted to the later teeth 15 head circle 14 of the strip material 2 in the vertical direction.
  • the feeder 16 at the top circle 14 of the board 13 is negligible and is located on the side 17 of the board 13, which is the attacking main punch 10 opposite.
  • the punches 18 for finishing cutting the toothing part 1 in a direction opposite to the partial step A after a working path corresponding to the thickness d of the strip material 2 , the tooth geometries 19 in the with the female part 20th returning board 13 , whereby the resulting waste 21 are discharged.
  • the corner region of the feeder 16 from the partial step A is replenished.
  • the cutting punch of the fineblanking tool 3 is designed as a multi-part main punch 10 for cutting out a first cutting geometry, for example a circuit board 13 .
  • the diameter of the board 13 corresponds to the head diameter of the toothing 15 of the toothing part 1 to be produced.
  • the working direction of the main punch 10 extends vertically.
  • At least one punch 18 (tooth gap punch) for final cutting of the semi-finished product into the toothing part 1 is assigned to the main punch 10 .
  • the punch 18 operates in the opposite direction to the main punch 10 and is located to the first cut geometry that he can detect this and not pressure-loaded in the same direction.
  • the sectional geometry of the main punch 10 is a top circle. However, it may also be a geometry of a composite contour of uniform or uneven curvature if other parts of other more complex shapes are to be cut.
  • the dies 18 for finish cutting expediently have geometries of a contour with a uniform or uneven curvature.
  • the cutting geometries of the main punch 10 and punch 18 can be varied so that complicated parts can be composed of simple geometries.
  • the fineblanking tool 3 is constructed in one stage. It allows opposing and contiguous intersection operations as previously described as substeps A and B.
  • FIG. 5 shows, as an example, a toothing part produced according to the method according to the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Punching Or Piercing (AREA)
  • Milling Processes (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
EP06090018A 2006-02-03 2006-02-03 Procédé et outil pour le découpage fin de pièces ayant des petits rayons de coin et une profondeur fortement reduite en un seule étape Active EP1815922B1 (fr)

Priority Applications (14)

Application Number Priority Date Filing Date Title
EP06090018A EP1815922B1 (fr) 2006-02-03 2006-02-03 Procédé et outil pour le découpage fin de pièces ayant des petits rayons de coin et une profondeur fortement reduite en un seule étape
PT06090018T PT1815922E (pt) 2006-02-03 2006-02-03 Processo e ferramenta para corte de precisão de peças de obra com pequenos raios de cantos e retracção reduzida grandemente numa disposição de uma fase
PL06090018T PL1815922T3 (pl) 2006-02-03 2006-02-03 Sposób i urządzenie do dokładnego wykrawania obrabianych przedmiotów z małymi promieniami naroży i ze znacznie zmniejszonym skurczem krawędziowym, w układzie jednoetapowym
ES06090018T ES2320372T3 (es) 2006-02-03 2006-02-03 Metodo y herramienta para el corte de precision de piezas de trabajo con radios de esquina pequeños y retraccion fuertemente reducida en una configuracion de una sola etapa.
AT06090018T ATE420741T1 (de) 2006-02-03 2006-02-03 Verfahren und werkzeug zum feinschneiden von werkstücken mit kleinen eckenradien und massiv reduziertem einzug in einer einstufigen anordnung
SI200630216T SI1815922T1 (sl) 2006-02-03 2006-02-03 Postopek in orodje za fino rezanje obdelovancev z majhnimi kotnimi radii in moäśno zmanjĺ anim odvzemanjem v enostopenjski izvedbi
DE502006002645T DE502006002645D1 (de) 2006-02-03 2006-02-03 Verfahren und Werkzeug zum Feinschneiden von Werkstücken mit kleinen Eckenradien und massiv reduziertem Einzug in einer einstufigen Anordnung
DK06090018T DK1815922T3 (da) 2006-02-03 2006-02-03 Fremgangsmåde og værktöj til finskæring af arbejdsemner med små kantradier og stærkt reduceret dybde i et ét-trins arrangement
CA2640211A CA2640211C (fr) 2006-02-03 2007-02-02 Procede et outil de decoupe fine de pieces a coins de petit rayon et retrait massif reduit dans un systeme a un etage
JP2008552759A JP2009525184A (ja) 2006-02-03 2007-02-02 鋭いエッジ有し、かつ、だれを低減した単段式設備における部材の精密打抜き方法及びその装置
US12/223,570 US10022770B2 (en) 2006-02-03 2007-02-02 Method and tool for precision cutting
PCT/EP2007/001106 WO2007090658A1 (fr) 2006-02-03 2007-02-02 Procede et outil de decoupe fine de pieces a coins de petit rayon et retrait massif reduit dans un systeme a un etage
KR1020087019253A KR20080091798A (ko) 2006-02-03 2007-02-02 작은 각 반경 및 대폭 축소된 1단 배열을 가지는 작업편을정밀 블랭킹하기 위한 공구 및 방법
CN2007800043772A CN101378859B (zh) 2006-02-03 2007-02-02 用于在单级结构中精密冲裁圆角半径小和凹缩极大减少的工件的方法和模具

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06090018A EP1815922B1 (fr) 2006-02-03 2006-02-03 Procédé et outil pour le découpage fin de pièces ayant des petits rayons de coin et une profondeur fortement reduite en un seule étape

Publications (2)

Publication Number Publication Date
EP1815922A1 true EP1815922A1 (fr) 2007-08-08
EP1815922B1 EP1815922B1 (fr) 2009-01-14

Family

ID=36754088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06090018A Active EP1815922B1 (fr) 2006-02-03 2006-02-03 Procédé et outil pour le découpage fin de pièces ayant des petits rayons de coin et une profondeur fortement reduite en un seule étape

Country Status (14)

Country Link
US (1) US10022770B2 (fr)
EP (1) EP1815922B1 (fr)
JP (1) JP2009525184A (fr)
KR (1) KR20080091798A (fr)
CN (1) CN101378859B (fr)
AT (1) ATE420741T1 (fr)
CA (1) CA2640211C (fr)
DE (1) DE502006002645D1 (fr)
DK (1) DK1815922T3 (fr)
ES (1) ES2320372T3 (fr)
PL (1) PL1815922T3 (fr)
PT (1) PT1815922E (fr)
SI (1) SI1815922T1 (fr)
WO (1) WO2007090658A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2036631A1 (fr) * 2007-09-14 2009-03-18 Feintool Intellectual Property AG Procédé et dispositif destinés à la fabrication de pièces découpées dotées de surfaces de fonction agrandies
EP2233771A3 (fr) * 2009-03-24 2010-12-01 Robert Bosch GmbH Coulisseau pour un amortisseur de véhicule et amortisseur de véhicule correspondant
EP2508274A1 (fr) 2011-04-05 2012-10-10 Feintool Intellectual Property AG Procédé et dispositif d'augmentation de la surface de portée d'une pièce obtenue par découpage fin ayant une dent, partie dentée ou analogue
CN101396707B (zh) * 2007-09-26 2013-03-20 法因图尔知识产权股份公司 用于制造具有基本光滑的、冲裁和增大的功能面的冲压件的方法和装置
US8826540B2 (en) 2010-02-10 2014-09-09 Feintool Intellectual Property Ag Method and device for influencing the cut and functional face on fine-blanked finished parts
US10022770B2 (en) 2006-02-03 2018-07-17 Feintool International Holding Ag Method and tool for precision cutting

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CN101808463B (zh) * 2009-02-13 2012-04-18 统将(惠阳)电子有限公司 线路板加工方法
JP5754324B2 (ja) * 2011-09-24 2015-07-29 アイシン精機株式会社 回転電機のロータおよびロータの形成方法
KR101413068B1 (ko) * 2012-10-09 2014-07-01 경창산업주식회사 자동변속기 치형 부품의 성형 방법
CN103128417B (zh) * 2013-02-20 2016-08-10 上海人造板机器厂有限公司 复杂形状中厚板类零件气割下料加工方法
EP3049624B1 (fr) * 2013-09-26 2018-10-31 United Technologies Corporation Bague d'équilibrage pour composant rotatif
CN104655446A (zh) * 2013-11-22 2015-05-27 济南大学 一种新式取得切屑根部的简易方法
US10456821B2 (en) 2015-10-14 2019-10-29 Magna Powertrain Inc. Fine blanking cam die
CN108580650A (zh) * 2018-05-22 2018-09-28 苏州木星电子有限公司 一种反向冲裁模具及其冲裁加工方法
JP7176549B2 (ja) * 2020-06-30 2022-11-22 Ｊｆｅスチール株式会社 金属板のせん断加工方法、プレス部品の製造方法、金属板、及び金属板のせん断金型
CN112974618B (zh) * 2021-03-11 2023-01-17 林州市诚雨电子材料有限公司 一种覆铜板的复合加工机构

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10022770B2 (en) 2006-02-03 2018-07-17 Feintool International Holding Ag Method and tool for precision cutting
EP2036631A1 (fr) * 2007-09-14 2009-03-18 Feintool Intellectual Property AG Procédé et dispositif destinés à la fabrication de pièces découpées dotées de surfaces de fonction agrandies
US9027379B2 (en) 2007-09-14 2015-05-12 Feintool Intellectual Property Ag Method and device for the production of a stamping with enlarged functional surface
CN101396707B (zh) * 2007-09-26 2013-03-20 法因图尔知识产权股份公司 用于制造具有基本光滑的、冲裁和增大的功能面的冲压件的方法和装置
US8939003B2 (en) 2007-09-26 2015-01-27 Feintool Intellectual Property Ag Method and device for the production of a stamping with almost smooth cutting and enlarged functional surface
EP2233771A3 (fr) * 2009-03-24 2010-12-01 Robert Bosch GmbH Coulisseau pour un amortisseur de véhicule et amortisseur de véhicule correspondant
US8826540B2 (en) 2010-02-10 2014-09-09 Feintool Intellectual Property Ag Method and device for influencing the cut and functional face on fine-blanked finished parts
EP2508274A1 (fr) 2011-04-05 2012-10-10 Feintool Intellectual Property AG Procédé et dispositif d'augmentation de la surface de portée d'une pièce obtenue par découpage fin ayant une dent, partie dentée ou analogue

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CA2640211C (fr) 2016-11-29
KR20080091798A (ko) 2008-10-14
PL1815922T3 (pl) 2009-08-31
DE502006002645D1 (de) 2009-03-05
JP2009525184A (ja) 2009-07-09
PT1815922E (pt) 2009-03-12
CN101378859A (zh) 2009-03-04
WO2007090658A1 (fr) 2007-08-16
SI1815922T1 (sl) 2009-06-30
ES2320372T3 (es) 2009-05-21
ATE420741T1 (de) 2009-01-15
CA2640211A1 (fr) 2007-08-16
EP1815922B1 (fr) 2009-01-14
DK1815922T3 (da) 2009-05-11
US10022770B2 (en) 2018-07-17
CN101378859B (zh) 2012-05-30
US20090010723A1 (en) 2009-01-08

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