EP2042249B1 - Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche - Google Patents

Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche Download PDF

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Publication number
EP2042249B1
EP2042249B1 EP07018892A EP07018892A EP2042249B1 EP 2042249 B1 EP2042249 B1 EP 2042249B1 EP 07018892 A EP07018892 A EP 07018892A EP 07018892 A EP07018892 A EP 07018892A EP 2042249 B1 EP2042249 B1 EP 2042249B1
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EP
European Patent Office
Prior art keywords
cutting
tool element
guide plate
stress
flat strip
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
EP07018892A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2042249A1 (de
Inventor
Ulrich Dipl.-Ing. Schlatter
Pavel Prof. Dr. Hora
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 EP07018892A priority Critical patent/EP2042249B1/de
Application filed by Feintool Intellectual Property AG filed Critical Feintool Intellectual Property AG
Priority to DK07018892.5T priority patent/DK2042249T3/da
Priority to PL07018892T priority patent/PL2042249T3/pl
Priority to ES07018892T priority patent/ES2341579T3/es
Priority to DE502007003169T priority patent/DE502007003169D1/de
Priority to PT07018892T priority patent/PT2042249E/pt
Priority to SI200730261T priority patent/SI2042249T1/sl
Priority to AT07018892T priority patent/ATE461002T1/de
Priority to MX2008011597A priority patent/MX2008011597A/es
Priority to CN2008101658107A priority patent/CN101396707B/zh
Priority to KR1020080093639A priority patent/KR20090032000A/ko
Priority to JP2008245588A priority patent/JP2009078300A/ja
Priority to CA2639773A priority patent/CA2639773C/en
Priority to US12/286,008 priority patent/US8939003B2/en
Publication of EP2042249A1 publication Critical patent/EP2042249A1/de
Application granted granted Critical
Publication of EP2042249B1 publication Critical patent/EP2042249B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • 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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing

Definitions

  • the invention relates to a method for producing stamped parts with largely smooth cutting and enlarged functional surface, in particular a workpiece by fine blanking and / or forming from a strip of tape, wherein the tape strip between one of a cutting punch, a guide plate for the cutting punch, one on the Guiding plate arranged ring teeth and an ejector composite upper part and a cutting insert, ejector and an inner mold existing lower part clamped when closing and forced separation in the cutting zone by shearing at high compressive stress, previously pressed the ring prongs in the tape strip and a compressive stress on the cutting tape strip is exercised.
  • the invention further relates to an apparatus for producing stamped parts with a substantially smooth and enlarged functional surface, in particular a workpiece by fine blanking and / or forming a strip of tape, with a two-part tool, the at least one of a main cutting punch, a guide plate for the cutting punch, an the guide plate arranged ring spike and an ejector together upper part and a composite of a cutting plate, an ejector and an inner mold punch base comprises, wherein the tape strip is clamped in use between the guide plate and cutting plate and the ring prong is pressed into the tape strip.
  • a generic method and a generic device are known from the article "fine blanking, a rational manufacturing process", special edition "sheet metal", September 1959, No. 9.
  • Typical features of fine-cut parts are also the edge indent and the cutting edge.
  • the feeder which increases with decreasing the corner radius and increasing sheet thickness.
  • the insertion depth can be approx. 30% and the feed width is about 40% of the sheet thickness or more (see DIN 3345, fineblanking, Aug. 1980).
  • the feeder is thus dependent on the material thickness and quality, so that its control is limited and often brings a limitation of the parts function, for example, by a lack of sharp edges of the corners of teeth or by the induced change in the functional length of the parts, with it.
  • the punch pull therefore reduces the parting function and forces the manufacturer to use a thicker stock.
  • the well-known shear press after DE 2 127 495 A1 is operated at a higher hydrostatic pressure exerted in the whole area of the workpiece subjected to plastic deformation.
  • This high pressure is generated in particular in the vicinity of the tool edges by an upper jaw provided with a projection.
  • This projection effectively takes on the function of the ring point, which after the DE 2 127 495 A1 not available.
  • the feeder is ultimately not eliminated and material volume is displaced along the cutting line, which is accompanied by an increased risk of cracking.
  • the workpiece is machined in a single-stage arrangement in at least two successive successive successive step sequences in different cutting directions, in a first cutting operation in the vertical direction cut a tailored to the workpiece geometry semi-finished product with a small indentation and cut in at least one other cutting operation in the opposite direction the part becomes.
  • the collection of the first part of the step is to be replenished at least in the corner.
  • predominantly the projecting punching burr is avoided.
  • the feeder is ultimately not eliminated and material volume is displaced along the cutting line, which is accompanied by an increased risk of cracking.
  • the present invention seeks to avoid the tendency to crack cut surfaces and the edge feed of fineblanking parts by targeted control of the stress state in the cutting zone and at the same time perform the fineblanking of thicker parts with higher process reliability economically and effectively.
  • the solution according to the invention is characterized in that it is possible for the first time to economically apply the fine blanking process to parts, for example toothed parts of greater thickness without tears and sharp edges without post-processing and material displacement along the cutting line.
  • the parameters for controlling the state of stress in the cutting zone for example the volume of material to be postponed depending on the type of material, shape and geometry of the workpiece can be determined by a virtual forming simulation, after which then the tool elements for the Nachschieben the material in the direction Cutting zone are designed.
  • the inventive method thus covers the fine blanking of parts in a wide dimensional range, for example, parts up to large thicknesses and complicated part geometries, such as gears on gear parts, in high quality.
  • even inferior steel grades can be finely cut without running the risk of tears on the cut surfaces.
  • the device according to the invention has a simple and robust construction.
  • Fig. 1 a schematic sectional view of the basic structure of a fine blanking tool according to the prior art
  • FIG. 2 the cutting zone according to Fig. 1 in detail
  • Fig. 3 a section through the device according to the invention without free cut in the tape strip in the clamped state according to the inventive method
  • Fig. 4 a section through the device according to the invention without free cut in the tape strip in the half-cut state by the method according to the invention
  • Fig. 5 the cutting zone according to Fig. 4 in detail
  • Fig. 6 a section through the device according to the invention with free cut in the tape strip in the half-cut state.
  • the Fig. 1 shows the basic structure of a fine cutting tool according to the prior art in the closed state.
  • the fineblanking tool has an upper part 1 and a lower part 2.
  • the upper part 1 of the fineblanking tool includes a guide plate 4 having a serrated edge 3, a cutting punch 5 guided in the guide plate 4 and an ejector 6.
  • the lower part 3 is formed by an insert 7, an inner mold or punch 8 and an ejector 9.
  • the cutting plate 7 and the inner mold waste have cut the fine cut part 11 at about half the workpiece thickness.
  • Fig. 2 is in detail the cutting zone according to the prior art according to Fig. 1 shown.
  • the tape strip 10 is located between the cutting plate 7 and guide plate 4.
  • the ring spike 3 presses the tape strip 10 with the ring-tooth force FR on the cutting plate 7.
  • the cutting punch 5 works with the cutting force FS against the counter-holder, here the Ejector 9, applied counterforce FG.
  • the cutting force FS is dependent on the outer and inner cut line length of the part, the thickness, the tensile strength of the material to be cut and an influencing factor, the yield strength to tensile strength ratio of the workpiece material, the geometric shape of the cutting part, the tool lubrication and the Dulling of the cutting punch 5 and the cutting plate 7 taken into account.
  • the inventive device of Example 1 substantially corresponds to the structure of the device, according to Fig. 1 has been described, but with the difference that a ring tooth 3 is arranged on the cutting plate 7.
  • active tool element 13 is provided in the cutting line direction SL with the corresponding force FW the strip of tape 10 acts.
  • the tool element 13 is supported on the one hand on the cutting punch 5 and on the other hand in a recess 4 introduced in the guide plate 4 vertically displaceable from the tape strip.
  • the tape strip 10 has no cutout and the active tool element 13 is not yet engaged.
  • the tape strip 10 is in the clamped state between the upper and lower part of the device according to the invention.
  • the lower ring spike 3 has penetrated into the tape strip 10 and the guide plate 4 presses with the corresponding, generated by the pressure pin 15 force FF on the tape strip 10th
  • Fig. 4 has the cutting punch 5, the tape strip 10 cut approximately halfway.
  • the active tool element 13 has also moved into the material of the clamped tape strip 10, wherein the tool element 13, the cutting punch 5 lags slightly.
  • Fig. 5 is illustrated how the active tool element 13 during its penetration into the tape strip 10 in cooperation with the lower ring point 3, the material moves almost transversely into the cutting zone.
  • the state of stress in the cutting zone constantly corresponds to a compressive stress which can be adjusted accordingly by the control of the tool element 13 as a function of the material type, shape and geometry of the workpiece.
  • the process parameters for the tool element 13, for example the force FW to be exerted, the hydraulic pressure for generating the force FW or the amount of the lag NE relative to the cutting punch 5, are determined as a function of
  • the material type, shape and geometry of the workpiece are determined by a virtual forming simulation, in which the material flow in the forming process is shown, strains and reference stresses are analyzed to determine whether the deformation can be made and the loads can be borne by the tool elements.
  • the parameters for determining the force FW of the active tool element 13 can also be determined on the real fineblank part by individual measurement. This requires a series of experiments and their evaluation in order to be able to interpret the active tool element 13 accordingly on this basis.
  • a differential stamping die penetrating into the workpiece from the stamp side can be used, which is in operative connection with a controllable hydraulic system.
  • the process according to the invention proceeds in such a way that first the strip of strip 10 is clamped between upper and lower part 1 or 2. From the beginning to the end of the cutting process, pressure is selectively exerted by the controlled hydraulic system in the region of the cutting zone with the pressure pin 12 and the active tool element 13. As a result, a corresponding state of stress is achieved in the cutting zone, which acts as a compressive stress during the entire cutting process. This leads to an improved surface quality, especially with poor material quality. With the targeted embossing by the active tool element 13 is a superposition of the cutting process with a transverse flow QF of part material in the cutting zone reached, whereby at the same time the punching in this area noticeably reduced. The lower serration 3 assists the transverse flow QF of the material into the cutting zone.
  • the Fig. 6 shows a further variant of the device according to the invention, which in its basic structure, the structure of in Fig. 3 corresponds described device.
  • a support ramp 16 is provided on the cutting plate 7, which comes to rest in the free cut 17. The support ramp 16 prevents the material from flowing in the width. All other operations are the same as in Example 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Adornments (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP07018892A 2007-09-26 2007-09-26 Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche Active EP2042249B1 (de)

Priority Applications (14)

Application Number Priority Date Filing Date Title
DK07018892.5T DK2042249T3 (da) 2007-09-26 2007-09-26 Fremgangsmåde og indretning til fremstilling af stanseemner med næsten glat og forstørret funktionel overflade
PL07018892T PL2042249T3 (pl) 2007-09-26 2007-09-26 Sposób i urządzenie do wytwarzania wytłoczek o znacznie gładszej powierzchni cięcia i powiększonej powierzchni funkcjonalnej
ES07018892T ES2341579T3 (es) 2007-09-26 2007-09-26 Procedimiento y dispositivo para fabricar piezas estampadas con superficie de corte muy lisa y superficie funcional aumentada.
DE502007003169T DE502007003169D1 (de) 2007-09-26 2007-09-26 Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche
PT07018892T PT2042249E (pt) 2007-09-26 2007-09-26 Processo e dispositivo para fabrico de peças estampadas com grande superfície funcional e de corte bastante lisa
SI200730261T SI2042249T1 (sl) 2007-09-26 2007-09-26 Postopek in naprava za izdelavo ĺ tancanih delov s preteĺ˝no gladko odrezovalno in poveäśano funkcionalno ploskvijo
AT07018892T ATE461002T1 (de) 2007-09-26 2007-09-26 Verfahren und vorrichtung zum herstellen von stanzteilen mit weitgehend glatter schnitt- und vergrösserter funktionsfläche
EP07018892A EP2042249B1 (de) 2007-09-26 2007-09-26 Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche
MX2008011597A MX2008011597A (es) 2007-09-26 2008-09-10 Metodo y dispositivo para producir piezas estampadas con superficie de corte considerablemente lisa y de funcion agrandada.
CN2008101658107A CN101396707B (zh) 2007-09-26 2008-09-23 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
KR1020080093639A KR20090032000A (ko) 2007-09-26 2008-09-24 매끄러운 절단과 확대된 작용면을 가지는 스탬핑 제조를 위한 장치 및 방법
JP2008245588A JP2009078300A (ja) 2007-09-26 2008-09-25 大幅に滑らかな切断面と拡大された機能面を備える打抜き部材を製造する方法と装置
CA2639773A CA2639773C (en) 2007-09-26 2008-09-25 Method and device for the production of a stamping with almost smooth cutting and enlarged functional surface
US12/286,008 US8939003B2 (en) 2007-09-26 2008-09-26 Method and device for the production of a stamping with almost smooth cutting and enlarged functional surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07018892A EP2042249B1 (de) 2007-09-26 2007-09-26 Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche

Publications (2)

Publication Number Publication Date
EP2042249A1 EP2042249A1 (de) 2009-04-01
EP2042249B1 true EP2042249B1 (de) 2010-03-17

Family

ID=39046729

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07018892A Active EP2042249B1 (de) 2007-09-26 2007-09-26 Verfahren und Vorrichtung zum Herstellen von Stanzteilen mit weitgehend glatter Schnitt- und vergrösserter Funktionsfläche

Country Status (14)

Country Link
US (1) US8939003B2 (sl)
EP (1) EP2042249B1 (sl)
JP (1) JP2009078300A (sl)
KR (1) KR20090032000A (sl)
CN (1) CN101396707B (sl)
AT (1) ATE461002T1 (sl)
CA (1) CA2639773C (sl)
DE (1) DE502007003169D1 (sl)
DK (1) DK2042249T3 (sl)
ES (1) ES2341579T3 (sl)
MX (1) MX2008011597A (sl)
PL (1) PL2042249T3 (sl)
PT (1) PT2042249E (sl)
SI (1) SI2042249T1 (sl)

Cited By (1)

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CN103537560A (zh) * 2013-10-25 2014-01-29 无锡鹏德汽车配件有限公司 一种厚板排气法兰精冲模具的齿圈压板

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JP2011045899A (ja) * 2009-08-26 2011-03-10 Showa Seiko Kk 精密塑性加工方法及び精密塑性加工装置
EP2357048B1 (de) * 2010-02-10 2013-06-05 Feintool Intellectual Property AG Verfahren und Vorrichtung zum Beeinflussen der Schnitt- und Funktionsfläche an feingeschnittenen Fertigteilen
CN102120236B (zh) * 2010-12-15 2013-05-01 武汉华夏精冲技术有限公司 细微齿形零件精密冲压成型的加工方法
US10245864B2 (en) * 2010-12-28 2019-04-02 Kyocera Document Solutions Inc. Method of manufacturing a sheet metal frame
US9361917B2 (en) 2011-07-19 2016-06-07 Intri-Plex Technologies, Inc. Method to fabricate a base plate for piezo actuation
JP2014018801A (ja) * 2012-07-12 2014-02-03 Honda Motor Co Ltd 孔開け加工方法、孔を備えた構造体の製造方法および孔を備えた構造体
JP6119999B2 (ja) 2013-11-21 2017-04-26 トヨタ紡織株式会社 プレス加工方法及びプレス加工装置
CN103691798B (zh) * 2013-12-13 2015-11-18 武汉华夏精冲技术有限公司 一种减小精冲件塌角的精冲成形方法
DE102014000299B3 (de) * 2014-01-15 2015-07-16 Rixen Wolfgang Verfahren zur Erzeugung von Durchgängen in einem metallischen Körper mittels Hochgeschwindigkeitsscherschneiden sowie dessen Verwendung
JP6567292B2 (ja) * 2014-03-17 2019-08-28 株式会社東亜鍛工所 孔を有する金属板の製造方法、周設孔付外歯歯車の製造方法及び金属板の製造方法
CN104874633A (zh) * 2015-07-01 2015-09-02 三能器具（无锡）有限公司 铝合金材料摩擦变形消减装置
WO2017006830A1 (ja) * 2015-07-07 2017-01-12 日新製鋼株式会社 突起部成形装置、突起部成形方法及び成形品
US10456821B2 (en) 2015-10-14 2019-10-29 Magna Powertrain Inc. Fine blanking cam die
US11135635B2 (en) 2016-04-05 2021-10-05 Robert Bosch Gmbh Process for blanking of metal parts
CN108031743B (zh) * 2017-12-26 2020-06-09 武汉协和齿环有限公司 一种齿环冲切模具和方法
CN109500234B (zh) * 2018-12-20 2023-12-22 中铝东南材料院（福建）科技有限公司 机械硬盘用铝合金基板冲压生产线及其工作方法
CN109506121B (zh) * 2018-12-27 2024-01-23 东风汽车集团股份有限公司 过拉延结构、冲压产品及冲压模具
CN113510180B (zh) * 2020-04-10 2023-02-07 中国兵器工业第五九研究所 一种精冲成形装置及摩擦片精冲成形方法
CN117772895B (zh) * 2024-02-28 2024-05-07 山西中科安瑞能源科技有限公司 一种接线盒自动化生产线用组装设备

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Publication number Priority date Publication date Assignee Title
CN103537560A (zh) * 2013-10-25 2014-01-29 无锡鹏德汽车配件有限公司 一种厚板排气法兰精冲模具的齿圈压板
CN103537560B (zh) * 2013-10-25 2015-12-02 无锡鹏德汽车配件有限公司 一种厚板排气法兰精冲模具的齿圈压板

Also Published As

Publication number Publication date
PT2042249E (pt) 2010-06-07
MX2008011597A (es) 2009-04-15
JP2009078300A (ja) 2009-04-16
CN101396707B (zh) 2013-03-20
CN101396707A (zh) 2009-04-01
CA2639773C (en) 2016-05-10
ES2341579T3 (es) 2010-06-22
SI2042249T1 (sl) 2010-07-30
US20090165525A1 (en) 2009-07-02
PL2042249T3 (pl) 2010-08-31
DE502007003169D1 (de) 2010-04-29
DK2042249T3 (da) 2010-06-21
ATE461002T1 (de) 2010-04-15
EP2042249A1 (de) 2009-04-01
US8939003B2 (en) 2015-01-27
KR20090032000A (ko) 2009-03-31
CA2639773A1 (en) 2009-03-26

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