EP2140954B1 - Verfahren und Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen - Google Patents

Verfahren und Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen Download PDF

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Publication number
EP2140954B1
EP2140954B1 EP20080012011 EP08012011A EP2140954B1 EP 2140954 B1 EP2140954 B1 EP 2140954B1 EP 20080012011 EP20080012011 EP 20080012011 EP 08012011 A EP08012011 A EP 08012011A EP 2140954 B1 EP2140954 B1 EP 2140954B1
Authority
EP
European Patent Office
Prior art keywords
cutting
die
material strip
fine blanking
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.)
Not-in-force
Application number
EP20080012011
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2140954A1 (de
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 AT08012011T priority Critical patent/ATE524251T1/de
Application filed by Feintool Intellectual Property AG filed Critical Feintool Intellectual Property AG
Priority to EP20080012011 priority patent/EP2140954B1/de
Priority to PCT/EP2009/004364 priority patent/WO2010000389A1/de
Priority to JP2011515166A priority patent/JP5698125B2/ja
Priority to AT09772089T priority patent/ATE544541T1/de
Priority to EP20090772089 priority patent/EP2303488B1/de
Publication of EP2140954A1 publication Critical patent/EP2140954A1/de
Priority to US12/977,733 priority patent/US8910549B2/en
Application granted granted Critical
Publication of EP2140954B1 publication Critical patent/EP2140954B1/de
Not-in-force 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
    • B21D28/10—Incompletely punching in such a manner that the parts are still coherent with the work
    • 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
    • B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
    • B21D45/003—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass in punching machines or punching tools
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y10T83/0467—By separating products from each other
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0529—Blanking and cutting
    • 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
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/06—Blanking
    • 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
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2074—Including means to divert one portion of product from another
    • Y10T83/2079—Remaining or re-inserted product portion from base material

Definitions

  • the invention relates to a method for producing fine blanking parts from a strip of material in a fine blanking tool, in which a strip of material is clamped between two tool parts or between an upper press or guide plate and a lower cutting plate and an upper and lower cutting punch and the cutting in cooperation with the upper wherein the cutting is carried out as an unfinished complete cut along the circumference of the fine blanking part with a specially shaped cutting edge of the cutting punch and / or cutting plate so that the fine blanking part at partial connecting parts on the material strip approximately at its upper or lower level in an altitude the material strip initially remains materially bonded and then moved together with the strip of material in the direction of the strip to a subsequent demolding stage (see JP 11309522 A ,
  • the invention further relates to an apparatus for producing fine cutting parts of a strip of material, with at least one cutting plate and a cutting punch for cutting the fine cutting part of a strip of material. ).
  • From the DE 10 2004 032 826 A1 is a method for producing stamped parts in a tool, in particular fine blanking tool, by means of at least one stamp, with which the stamped part is pushed out of a strip of material known.
  • the punched part is pushed from the material strip of this after being pressed out to a discharge.
  • the punch cooperates with a counter-holder in an insert when pressing out the stamped part, wherein the counter-holder the stamped part is lifted when opening the tool to the surface of the insert and the strip of material from the insert.
  • the strip of material is lifted by the cutting plate at a defined distance which corresponds at least to the thickness of the stamped parts.
  • the present invention seeks to improve a method and apparatus for producing fineblanked parts such that a vertical relative movement between strip of material and fineblanking part is completely avoided, reduces the necessary opening and closing of the device and a simple structure the device is a use on high-speed presses possible, the fineblanking parts suffer no damage to the functional surfaces.
  • the solution according to the invention is characterized in that, for cutting, a die insert which can be inserted in a receptacle of the insert and a punch used with partially formed bevels along its cutting edges are used, and in the demolding step the partial bond parts are separated from the strip of material without pushing back
  • the fine blanking part and the material strip are demolded downwards by a shear force-free breaking perpendicular to the running direction of the material strip, wherein the demoulded fine blanking part is removed through a chute in the cutting plate.
  • the fine blanking part is cut to about 80 to 90% of its circumference completely from the strip of material.
  • the fineblanking part is held on the material strip by at least one, in particular two or more, connecting part (s). These connection parts are to be arranged so that they do not come to lie in the area of the important functional surfaces of the fineblanking part during later breaking.
  • connection points between the material strip and the fineblanking part are produced by the special shaping at the cutting edges of cutting punches and / or cutting plates in conjunction with the kinematics of the fineblanking press used, which are independent of the Thick variations of the material strip always moves in the same vertical position of the two decisive cutting edges.
  • a recording of the insert at least one Matrizendon is inserted interchangeable and associated with a die insert opposite cutting punch with partially shaped chamfers along their cutting edges.
  • the die insert is kept evenly biased along its circumference in the receptacle and projects beyond the base plate of the insert such that the die insert punctures the strip of material when closing the device on the punch, i. predetermined locations, can clamp without the base plate can engage.
  • the ready-held enemy cutting oil not only distributes the areal pressure unintentionally and then is no longer available to a sufficient extent when cutting.
  • the concentration of the fine cutting specific clamping forces on the die inserts continues to have the Advantage that the production of smooth cut surfaces on fineblanking part is supported.
  • the demoulding process by breaking the connecting parts between the fineblank part and the material strip in the demoulding stage must ensure that no vertical shear forces are transmitted to the narrow connecting parts.
  • the inventive device is simple and compact and has the great advantage that the required way to open and close the upper and lower part is significantly reduced. This is achieved in that in a receiving space of the cutting plate is arranged under a uniform bias force-locking die insert is associated with the cutting punch, wherein the cutting edges of the die insert and / or the cutting punch by a partially shaped barrel for incomplete cutting of Feinschneidteils from the strip of material are interrupted, such that the fine blanking part and the strip of material by partial connecting parts are materially interconnected after cutting, and that the die insert relative to the cutting plate has a vertical offset for partial clamping of the strip of material on a press or guide plate, and that in the cutting plate Downshaft for discharging the separated by a shear-free breaking off the strip of material fine cutting parts is provided vertically downwards to the direction of the strip of material.
  • the special shaping of the cutting edges of die insert and / or punch consists of a partially shaped chamfer, which can vary in length and / or three and / or inclination and interrupts the cutting edge of Matrizenmony and / or cutting punch accordingly, so that the fine cutting part of the strip of material not is completely cut and remains firmly bonded to partial connecting parts on the material strip approximately at its upper or lower level in an altitude relative to the material strip.
  • the space required for the transport of the composite of strips of material and fine blanking space within the interior of the device is achieved in that the die insert relative to the cutting plate has a height offset, which is dimensioned so that the required space for the material thickness downwardly protruding, however is still ensured on the strip of material fineblanking parts, so that the fineblanking parts can not be pushed back in the vertical direction or otherwise moved.
  • the opposite to the cutting plate protruding die inserts allow for clamping the strip of material and a concentration of fine cutting specific clamping forces around the cutting geometry around, which provides the advantage that the quality of the interfaces on Feinschneidteil can be improved.
  • the die insert is interchangeable and can also be used several times after regrinding.
  • the one by the Regrind resulting height or material loss on Matrizenreheat can be compensated by placed in the receiving space under the die insert documents of different thickness very easily, allows flexible and cost-effective spare parts inventory with a high material utilization of Matrizenein algorithms.
  • Another advantage is that the lubricant stored on the inlet side in lubricant pockets remains in the pockets when the material strip is clamped because only a selective clamping of the material strip around the cutting geometry takes place and the previously usual planar clamping of the material strip between upper and lower surfaces. and lower part of the device is eliminated.
  • the inventive method and the device according to the invention are characterized by small opening and closing paths, so that high cycle rates and high output performance can be achieved, whereby the use of high-speed presses is made possible.
  • Fig. 1a to 1d a simplified schematic representation of the sequence of the method according to the invention.
  • Fig. 2 a sectional view of the design of the connecting portion between fine blank and material strips on the one hand and the design of die insert and cutting punch on the other hand and
  • fine blanking parts 1 are to be produced from a strip of material 2.
  • the Fig. 1a shows the device according to the invention with inserted strips of material 2 in the open state of the upper tool part 3 and lower tool part 4.
  • the lower tool part 4 includes a cutting plate 5, which has a receiving space 6 for receiving a die insert 7.
  • the Matrizenrus 7 is in the Fig. 1a shown as a simple tubular insert, but may also have other more complicated shapes. At its periphery of the die insert 7 is held for example by a screw, not shown in the cutting plate 5 under uniform bias, so that the forces occurring during cutting can be safely absorbed by die insert 7. The Matrizenrus 7 is thus removed from the receiving space 6 of the cutting plate 5 and can be reground accordingly if necessary.
  • the height loss of the die insert 7 compensated as a result of regrinding. It documents 8 are kept at different thicknesses, so that depending on the size of the regrinding different height losses can be compensated and the die insert 7 reaches the original height again.
  • the die insert 7 has a height offset H, so that the die insert 7 is significantly above the level of the cutting plate 5.
  • This height offset H is dimensioned such that it corresponds approximately to the material thickness of the material strip 2.
  • the upper tool part 3 and lower tool part 4 of the device according to the invention are opened so far that the imported material strip with the tailed fine cutting part 1 has sufficient space in the direction R of the material strip 2.
  • a chute 9 for discharging the fine cutting parts 1 is arranged approximately vertically downwards to the direction R of the material strip 2.
  • the die insert 7 is a punch 11 in the upper tool part 3 for cutting the fine blanking part 1 from the strip of material 2 and the chute 9 associated with an ejector 12.
  • the upper tool part 3 includes a press or guide plate 10 in which at least one cutting punch 11 and at least one ejector 12 are guided.
  • Fig. 1b shows the closed upper tool part 3 and lower tool part 4 with between die insert 7 and
  • the clamping plate is clamped around the cutting geometry, so that the fine cutting specific clamping forces are concentrated on a narrow range. This supports the production of smooth-cut separating surfaces on the fineblanking part 1.
  • lubrication pockets arranged in the cutting plate can be dispensed with and the lubricant supply on the material strip is available exclusively for the fineblanking process.
  • Fig. 1c shows the step of the method according to the invention, in which the cutting punch 5 has performed an incomplete complete cut in the strip of material 2 and the fine part cutting part 1 is cut to about 80 to 90% of its circumference.
  • Fig. 2 Reference is made, in which the fine blanking part 1 remains connected to, for example, a narrow connecting portion 14 with the material strip 2 cohesively after the cut.
  • the incomplete complete cut is achieved by a corresponding preparation of the cutting edges 15 of die insert 7 and / or cutting punch 11 in conjunction with the kinematics of the fine blanking press used, which always moves independently of the thickness variations of the material strip in the same vertical position of the cutting edges of die insert 7 and cutting punch 11 , reached.
  • the cutting edge 15 of the die insert 7 can be broken, for example, along its edge profile by one or more chamfers 16.
  • the width and / or length and / or inclination of these bevels vary. This is aimed according to the size, geometry and after their distribution on the die insert 7 and / or cutting punch 11 and the thickness and quality of the material strip and the allowable shape tolerances radially and axially at the connection points, the fine blanking part 1, which by the dimensions h and i am Die insert 7 and the dimensions 1 and k is illustrated on the cutting punch. This also applies to the Einschertiefe T of the cutting punch 11 in the die insert. 7
  • the ejector 12 of the demolding stage has separated the connecting parts 14 between the fineblank 1 and strips of material 2 shearing force and fineblanking part 1 is discharged through the chute 9 perpendicular to the direction R of the strip of material 2 down.
  • the connecting parts 14 are broken by the ejector 12 largely free of damage.
  • the connecting parts 14 are distributed on the circumference of the fineblanking part 1 that they do not lie on the functional surfaces of the fineblanking part.
  • the strip of material 1 forms after the cutting process with the tailed fine cutting part 1 a composite that can be transported without any relative movement in the vertical direction with open inventive device in the direction R to Entformungscut, because by the relative to the die insert 7 deeper placed cutting plate 5 sufficient space which is about the thickness of the strip of material 2 downwardly protruding fine cutting 1 is present.
  • This is associated with the very great advantage that the necessary opening path at the device according to the invention can be kept so small that the cycle numbers can be massively increased. This allows the use of high speed presses.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
EP20080012011 2008-07-03 2008-07-03 Verfahren und Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen Not-in-force EP2140954B1 (de)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP20080012011 EP2140954B1 (de) 2008-07-03 2008-07-03 Verfahren und Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen
AT08012011T ATE524251T1 (de) 2008-07-03 2008-07-03 Verfahren und vorrichtung zum herstellen von feinschneidteilen aus einem materialstreifen
JP2011515166A JP5698125B2 (ja) 2008-07-03 2009-06-17 帯状材料から精密打ち抜き部品を製作する方法と装置
AT09772089T ATE544541T1 (de) 2008-07-03 2009-06-17 Verfahren und vorrichtung zum herstellen von feinschneidteilen aus einem materialstreifen
PCT/EP2009/004364 WO2010000389A1 (de) 2008-07-03 2009-06-17 Verfahren und vorrichtung zum herstellen von feinschneidteilen aus einem materialstreifen
EP20090772089 EP2303488B1 (de) 2008-07-03 2009-06-17 Verfahren und vorrichtung zum herstellen von feinschneidteilen aus einem materialstreifen
US12/977,733 US8910549B2 (en) 2008-07-03 2010-12-23 Method and device for producing precision blankings from a material strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20080012011 EP2140954B1 (de) 2008-07-03 2008-07-03 Verfahren und Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen

Publications (2)

Publication Number Publication Date
EP2140954A1 EP2140954A1 (de) 2010-01-06
EP2140954B1 true EP2140954B1 (de) 2011-09-14

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EP20080012011 Not-in-force EP2140954B1 (de) 2008-07-03 2008-07-03 Verfahren und Vorrichtung zum Herstellen von Feinschneidteilen aus einem Materialstreifen
EP20090772089 Active EP2303488B1 (de) 2008-07-03 2009-06-17 Verfahren und vorrichtung zum herstellen von feinschneidteilen aus einem materialstreifen

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP20090772089 Active EP2303488B1 (de) 2008-07-03 2009-06-17 Verfahren und vorrichtung zum herstellen von feinschneidteilen aus einem materialstreifen

Country Status (5)

Country Link
US (1) US8910549B2 (ja)
EP (2) EP2140954B1 (ja)
JP (1) JP5698125B2 (ja)
AT (2) ATE524251T1 (ja)
WO (1) WO2010000389A1 (ja)

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JP2011526212A (ja) 2011-10-06
EP2303488A1 (de) 2011-04-06
US8910549B2 (en) 2014-12-16
US20110132162A1 (en) 2011-06-09
WO2010000389A1 (de) 2010-01-07
ATE544541T1 (de) 2012-02-15
EP2140954A1 (de) 2010-01-06
ATE524251T1 (de) 2011-09-15
JP5698125B2 (ja) 2015-04-08
EP2303488B1 (de) 2012-02-08

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