EP2208552B2 - Procédé et dispositif destinés à couper fin des pièces à usiner - Google Patents

Procédé et dispositif destinés à couper fin des pièces à usiner Download PDF

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Publication number
EP2208552B2
EP2208552B2 EP09000652.9A EP09000652A EP2208552B2 EP 2208552 B2 EP2208552 B2 EP 2208552B2 EP 09000652 A EP09000652 A EP 09000652A EP 2208552 B2 EP2208552 B2 EP 2208552B2
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EP
European Patent Office
Prior art keywords
cutting
punch
plate
counter
support
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.)
Active
Application number
EP09000652.9A
Other languages
German (de)
English (en)
Other versions
EP2208552B1 (fr
EP2208552A1 (fr
Inventor
Martin Zimmermann
Martin Watermann
Konrad Trump
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.)
Finova Feinschneidtechnik GmbH
Original Assignee
Finova Feinschneidtechnik GmbH
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Publication date
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Priority to ES09000652.9T priority Critical patent/ES2361140T5/es
Priority to DE502009000546T priority patent/DE502009000546D1/de
Priority to SI200930040T priority patent/SI2208552T2/sl
Priority to AT09000652T priority patent/ATE505278T1/de
Priority to EP09000652.9A priority patent/EP2208552B2/fr
Application filed by Finova Feinschneidtechnik GmbH filed Critical Finova Feinschneidtechnik GmbH
Priority to PL09000652T priority patent/PL2208552T5/pl
Publication of EP2208552A1 publication Critical patent/EP2208552A1/fr
Publication of EP2208552B1 publication Critical patent/EP2208552B1/fr
Publication of EP2208552B2 publication Critical patent/EP2208552B2/fr
Application granted granted Critical
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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/26—Making other particular articles wheels or the like
    • B21D53/28—Making other particular articles wheels or the like gear wheels

Definitions

  • the invention relates to a device for fine cutting of workpieces, such as gears od.
  • a device for fine cutting of workpieces such as gears od.
  • a device for fine cutting of workpieces such as gears od.
  • a device for fine cutting of workpieces such as gears od.
  • a device for positive guidance a pressure plate and a cutting plate, in which a counter-holder is guided, wherein between the pressing plate and the cutting plate, a sheet is held immovable, wherein at least the cutting punch and the cutting plate are rotatably arranged relative to each other and the cutting punch is provided with arranged at an angle to the vertical direction of movement of the cutting punch cutting surfaces
  • a similar device according to the prior art is basically from the DE OS 3324680 known.
  • punching this is a process in which the material - usually a metal strip - is firmly clamped before and during the cutting process and guided with narrow tolerances.
  • the sheet metal strip is clamped between the cutting plate and the pressure plate before the cutting process.
  • An additional clamping of the metal strip is done between the anvil and the cutting punch, with the respective forces initially keep the balance.
  • By increasing the punch force of the cutting process is initiated, so that the punch displaces the counter-holder.
  • the cut-out workpiece is ejected from the counter-holder from the cutting plate and advanced the metal strip for the next cutting operation.
  • a device is known from the documentally uncontrollable prior art, in which additionally the cutting punch and the cutting plate are rotatably arranged relative to each other and the cutting punch is provided with arranged at an angle to the vertical direction of movement of the cutting punch cutting surfaces.
  • the object of the invention is to provide a device which has a bearing of the cutting punch for large loads, the cost of storage should be as low as possible.
  • the cutting punch has a Stempelfuß which is rotatably mounted in a pressure chamber of an upper set, which is filled with a rotary bearing serving hydraulic fluid, preferably oil, and is closed by a check valve, so that the cutting punch is stored during a cutting process with the aid of an oil pad and the surfaces of the stamp foot and headset are separated.
  • a Stempelfuß which is rotatably mounted in a pressure chamber of an upper set, which is filled with a rotary bearing serving hydraulic fluid, preferably oil, and is closed by a check valve, so that the cutting punch is stored during a cutting process with the aid of an oil pad and the surfaces of the stamp foot and headset are separated.
  • the essential advantage of the new apparatus for fineblanking according to the invention is that the cutting punch has a stamp foot, which is rotatably mounted in a pressure space which is filled with hydraulic fluid. As a result, it is advantageously achieved in the bearing area of the stamp, even at high loads, that the surfaces are separated from one another. Due to the generous thickness of the oil poster of several millimeters rotates the Stempelfuß at any time exclusively on the oil pad.
  • the Fig. 1 shows that, in contrast to punching during fine cutting in addition to a cutting punch A and a cutting plate B, a counter-holder C and a guide plate D is present, wherein in the guide plate D a ring point E is integrated, with a complete clamping of the metal strip G in the Cutting line is enabled. Due to the complete clamping of the metal strip G is in the shear zone during the cutting process before a pure shear, which completely smooth Cutting surfaces without fracture zones can arise. This is achieved, inter alia, by a significantly reduced cutting gap.
  • the cutting punch A is loaded with the punch force F ST , the metal strip G with the ring-tooth force F R , the counter-holder C with the counter-holding force F G and the cutting plate B is loaded with the ram force F plunger .
  • Fig. 1 shows that in fine cutting according to the prior art, the cutting punch A performs a purely vertical, at right angles to the metal strip G extending cutting motion, so that the created cut surfaces are arranged at a right angle to the sheet metal strip plane.
  • Fig. 2 is a helical gear S shown, which nowadays has a wide range of applications in different embodiments, but with a device according to the Fig. 1 can not be produced according to the prior art.
  • Such a device 10 is formed on the one hand by a rotating cutting punch 11, which is arranged in a rotationally fixed guide plate 12.
  • the cutting punch 11 has an external helical gearing 13 a and is guided by a matching internal helical gearing 13 b of the guide plate 12.
  • the device 10 a within a rotationally fixed cutting plate 15 also rotatably arranged counter-holder 14 with a helical toothing 16 a , which also by means of a helical gearing 16 b of the cutting plate 15 is guided.
  • the aforementioned helical gears 13 a and 16 a of the cutting punch 11 and the counter-holder 14 are provided with arranged at an angle to the vertical cutting surfaces.
  • a metal strip 17 is arranged, which is additionally fully clamped by a ring not shown between cutting plate 15 and guide plate 12.
  • the cutting punch 11 and counter-holder 14 with their respective helical gears 13 and 16 occupy a position relative to one another that the respective cutting surfaces of the helical gears 13 and 16 have matching cutting lines s.
  • the device 10 is provided in a manner not shown with a device for the exact positioning of the helical teeth 16 of the counter-holder 14 to the helical teeth 13 of the punch 11.
  • a so-called top 20 is provided with a pressure chamber 21 in which a Stempelfuß 22 is guided vertically movable, which is connected to the cutting punch 11.
  • the pressure chamber 21 is filled with a hydraulic fluid, preferably oil, and closed in a manner not shown by a check valve. With the help of this arrangement, a storage of the cutting punch 11 during the cutting process by means of an oil pad 23 is possible.
  • the oil pad 23 as a variant of the so-called hydrostatic principle ensures automatically then the separation of the surfaces of Stkovfuß 22 and 20 set when the loads are large.
  • the effort for the supply of the device is extremely low, since the fine cutting oil used as a printing medium is already available in a suitably biased reservoir at the press.
  • the Stempelfußes 22 By the storage of the Stempelfußes 22 on an oil pad 23, the required separation of the surfaces of Stempelfuß 22 and 20 set is reliably met. Due to the generous thickness of the oil pad 23 of several millimeters, the Stempelfuß 22 rotates at all times exclusively on the oil pad 23. A backflow of oil through the supply line is prevented by a non-illustrated check valve, the effect of which increases itself with increasing pressure in the oil pad 23.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Punching Or Piercing (AREA)
  • Turning (AREA)
  • Control Of Cutting Processes (AREA)

Claims (5)

  1. Dispositif (10) pour couper fin des pieces à usiner, comme des roués dentées ou similaires, essentiellement compose d'un poinçon de coupage (11) muni d'un contour de coupe, de faces de coupe et d'un dispositif de guidage force, d'une plaque de serrage ainsi que d'une plaque de decoupage (15), dans laquelle est guide un contre-appui (14), sachant qu'entre la plaque de serrage et al plaque de decoupage (15) une tôle peut être maintenue inamoviblement et qu'au moins le poinçon de coupage (11) et la plaque de découpage (15) sont disposes orientables, de façon relative, l'un par rapport à l'autre et que le poinçon de coupage (11) est muni de faces de coupe disposes selon un angle par rapport au sens vertical de déplacement du poinçon de coupage (11) caracterizé en ce que le poinçon de coupage (11) présente un talon de poinçonnage (22) qui est logé de manière orientable dans un espace de pression (21) d'un outil supérieur (20) lequel est rempli de liquid hydraulique, préférablement d'huile, faisant office de palier, et qui est obturé par un clapet anti-retour pour que le poinçon de coupage (11) soit positioné à l'aide d'une couche d'huile (23) pendant le coupage et les surfaces du talon de poinçonnage (22) et de l'outil supérieur soient séparées.
  2. Dispositif selon la revendication 1, characterize en ce qu'aussi, le contre-appui (14) et la plaque de decoupage (15) sont disposes orientables, de façon relative l'un à l'autre et qu'il présente également un contour de coupe realize de façon analogue au poinçon de coupage (11) et des faces de coupe.
  3. Dispositif selon la revendication 2, caracterizé en ce que le poinçon de coupage (11) et le contre-appui (14) sont placé de manière orientable, et en ce que la plaque de serrage (12) et la plaque de decoupage (15) sont places non-orientables, mais mobiles verticalement.
  4. Dispositif selon l'une des revendications 1 à 3, characterizé par un dispositif pour synchronisation du poinçon de coupage (11) et du contr-appui (14), en ce qui concerne leur ligne de coupe et la vitesse de rotation pendant le coupage fin.
  5. Dispositif selon la revendication 1, caractérisé en ce que le contour de coupe ou les faces de coupe du poinçon de coupage (11) ou du contre-appui (14) est/sont realisé(es) en tant que denture oblique (13a, 16a).
EP09000652.9A 2009-01-19 2009-01-19 Procédé et dispositif destinés à couper fin des pièces à usiner Active EP2208552B2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE502009000546T DE502009000546D1 (de) 2009-01-19 2009-01-19 Verfahren und Vorrichtung zum Feinschneiden von Werkstücken
SI200930040T SI2208552T2 (sl) 2009-01-19 2009-01-19 Postopek in naprava za fino rezanje obdelovancev
AT09000652T ATE505278T1 (de) 2009-01-19 2009-01-19 Verfahren und vorrichtung zum feinschneiden von werkstücken
EP09000652.9A EP2208552B2 (fr) 2009-01-19 2009-01-19 Procédé et dispositif destinés à couper fin des pièces à usiner
ES09000652.9T ES2361140T5 (es) 2009-01-19 2009-01-19 Procedimiento y dispositivo para el corte de precisión de piezas de trabajo
PL09000652T PL2208552T5 (pl) 2009-01-19 2009-01-19 Sposób i urządzenie do wykrawania dokładnego części obrabianych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09000652.9A EP2208552B2 (fr) 2009-01-19 2009-01-19 Procédé et dispositif destinés à couper fin des pièces à usiner

Publications (3)

Publication Number Publication Date
EP2208552A1 EP2208552A1 (fr) 2010-07-21
EP2208552B1 EP2208552B1 (fr) 2011-04-13
EP2208552B2 true EP2208552B2 (fr) 2014-06-04

Family

ID=41323560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09000652.9A Active EP2208552B2 (fr) 2009-01-19 2009-01-19 Procédé et dispositif destinés à couper fin des pièces à usiner

Country Status (6)

Country Link
EP (1) EP2208552B2 (fr)
AT (1) ATE505278T1 (fr)
DE (1) DE502009000546D1 (fr)
ES (1) ES2361140T5 (fr)
PL (1) PL2208552T5 (fr)
SI (1) SI2208552T2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011102288B4 (de) 2011-05-23 2013-03-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Herstellung eines Stirnrads mit einer Schrägverzahnung
US9676021B2 (en) * 2012-07-06 2017-06-13 Lapmaster International L.L.C. Stamping press
EP2842653B1 (fr) * 2013-08-28 2016-05-11 Feintool International Holding AG Outil et procédé de fabrication de pièces découpées
CN104001806B (zh) * 2014-06-05 2015-09-30 武汉理工大学 一种斜齿圆柱齿轮的板料成形模具及方法
DE102015204415A1 (de) * 2015-03-12 2016-09-15 Bayerische Motoren Werke Aktiengesellschaft Schlagschneidwerkzeug
CN108435912B (zh) * 2018-03-08 2020-06-30 皖西学院 一种圆柱斜齿轮扭压成形模具及其成形方法
DE102022205021A1 (de) 2022-05-19 2023-11-23 Universität Stuttgart, Körperschaft Des Öffentlichen Rechts Niederhalter für ein Schneidwerkzeug zum Scherschneiden eines Werkstücks

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234771A1 (de) † 1982-09-20 1984-03-22 Alfred Teves Gmbh, 6000 Frankfurt -verfahren zum stanzschneiden einer verzahnung und vorrichtung zur durchfuehrung des verfahrens
DE3423543A1 (de) † 1983-06-28 1985-01-03 Repco Ltd., Melbourne, Victoria Presse und verfahren zur herstellung derselben
WO2004094083A2 (fr) † 2003-04-22 2004-11-04 Neumayer Tekfor Gmbh Procede de production d'une piece annulaire en forme de cuvette presentant une denture interieure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1137113B (it) 1981-03-31 1986-09-03 Stama Spa Procedimento per la tranciatura di ruote dentate a profilo elicoidale e prodotti cosi' ottenuto
DE3324680A1 (de) * 1983-07-08 1985-01-24 DAKO-Werkzeugfabriken David Kotthaus GmbH & Co KG, 5630 Remscheid Verfahren zum feinschneiden von werkstuecken und feinschneidwerkzeug zur ausuebung des verfahrens
JP2879187B2 (ja) * 1993-10-18 1999-04-05 大岡技研株式会社 多段歯車の鍛造方法及び装置
JP2002307130A (ja) * 2001-04-11 2002-10-22 Araco Corp リングギヤの製造方法及びそれに用いる装置
JP3975715B2 (ja) * 2001-10-10 2007-09-12 トヨタ紡織株式会社 プレス成形方法及びそれに用いる装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234771A1 (de) † 1982-09-20 1984-03-22 Alfred Teves Gmbh, 6000 Frankfurt -verfahren zum stanzschneiden einer verzahnung und vorrichtung zur durchfuehrung des verfahrens
DE3423543A1 (de) † 1983-06-28 1985-01-03 Repco Ltd., Melbourne, Victoria Presse und verfahren zur herstellung derselben
WO2004094083A2 (fr) † 2003-04-22 2004-11-04 Neumayer Tekfor Gmbh Procede de production d'une piece annulaire en forme de cuvette presentant une denture interieure
DE102004019673A1 (de) † 2003-04-22 2004-11-18 Neumayer Holding Gmbh Verfahren zur Herstellung eines napfförmigen Ringteiles mit Innenverzahnung

Non-Patent Citations (1)

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Title
F. KLOCKE ET AL.: "Fertigungsverfahren Umformen", VDI, no. 4, 2006 †

Also Published As

Publication number Publication date
EP2208552B1 (fr) 2011-04-13
ATE505278T1 (de) 2011-04-15
SI2208552T1 (sl) 2011-08-31
ES2361140T5 (es) 2014-08-12
ES2361140T3 (es) 2011-06-14
DE502009000546D1 (de) 2011-05-26
EP2208552A1 (fr) 2010-07-21
PL2208552T3 (pl) 2011-09-30
PL2208552T5 (pl) 2014-10-31
SI2208552T2 (sl) 2014-09-30

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