EP3409392A1 - Procédé de fabrication de pièces estampées - Google Patents

Procédé de fabrication de pièces estampées Download PDF

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Publication number
EP3409392A1
EP3409392A1 EP17000913.8A EP17000913A EP3409392A1 EP 3409392 A1 EP3409392 A1 EP 3409392A1 EP 17000913 A EP17000913 A EP 17000913A EP 3409392 A1 EP3409392 A1 EP 3409392A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
die
ridge
embossing device
burr
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
EP17000913.8A
Other languages
German (de)
English (en)
Other versions
EP3409392B1 (fr
Inventor
Sven HOFSTETTER
Herbert Fuchs
Jonatan GERSBACH
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 International Holding AG
Original Assignee
Feintool International Holding 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
Application filed by Feintool International Holding AG filed Critical Feintool International Holding AG
Priority to ES17000913T priority Critical patent/ES2941059T3/es
Priority to EP17000913.8A priority patent/EP3409392B1/fr
Priority to JP2018095358A priority patent/JP6726701B2/ja
Priority to KR1020180061119A priority patent/KR20180131445A/ko
Priority to CN201810528403.1A priority patent/CN108971295B/zh
Priority to US15/993,049 priority patent/US11059087B2/en
Publication of EP3409392A1 publication Critical patent/EP3409392A1/fr
Priority to KR1020200040547A priority patent/KR102253535B1/ko
Application granted granted Critical
Publication of EP3409392B1 publication Critical patent/EP3409392B1/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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/005—Processes combined with methods covered by groups B21D1/00 - B21D31/00 characterized by the material of the blank or the workpiece
    • 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
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/005—Edge deburring or smoothing
    • 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
    • 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 method for producing stamped parts, in which a stamped, in particular a finely cut workpiece, is inserted into an embossing device and is rounded with a die of the embossing device of the burr formed on the workpiece during punching, in particular fineblanking.
  • a method of this kind is known, for example, from the publication originating from the applicant himself WO 97/32678 ,
  • This generic method is based on the problem that in a workpiece which is to be punched or cut from a sheet metal strip, for example, a so-called indentation is present along the cutting contour on the one surface of the workpiece thus produced and on the opposite workpiece surface a ridge along the punching - or cutting contour exists.
  • the burr that protrudes from the workpiece surface in the stroke direction at the edge prevents such a punched or finely cut workpiece can be used directly, but requires post-processing.
  • the generic method has the effect that the workpiece, which is inserted into the embossing device and is produced as a stamped part, is freed from its burr by the process of embossing in a die.
  • the burr is rounded here, in particular wherein the rounding by the die of the embossing device is predetermined.
  • the embossed burr side of the workpiece and the feed side of the workpiece have slightly different shapes or dimensions, which, for example, on it is due to the fact that the predetermined by the punching parameters and the material indentation is not identical to the rounded by the embossment ridge and also the cutting surface of the workpiece, which extends between the two workpiece surfaces, ie between the feed side and the ridge side of the workpiece not is oriented exactly parallel to the stroke direction of the press, or not exactly parallel to the surface normal of the two workpiece surfaces of the workpiece produced.
  • the workpiece thus produced usually has a smaller cross-sectional area in the insert-side workpiece surface plane than in the ridge-side workpiece surface plane.
  • this object is achieved in that in a method of the type mentioned with the same stroke of the embossing device with which the ridge rounding is done on the grat fixture surface, and the height of the incurred during punching collection is reduced.
  • the length of the indentation is understood to be the length of the indentation extent at the cutting edge in the direction of the workpiece thickness or in the stroke direction of the stamping press or fineblanking press.
  • the invention can provide here that the ridge lathing the ridge has a radius provided for the ridge rounding, which is smaller than the insertion height of the case during punching, especially during fineblanking indentation, and that by the embossing process on the feed side, a reduced indentation is generated, in particular until is reduced to a pull-in height that is at least substantially equal to this designated radius of the die.
  • the collection reduction is essentially produced by pressing material of the workpiece during the embossing or rounding of the burr in the direction of the intake.
  • the invention may for example provide that a die is formed in one piece, in two parts or in several parts, and e.g. an upper and a lower die part, wherein the ridge rounding on the ridge side of the workpiece by one of the two die parts and reducing the insertion height on the feed side of the workpiece effected by the other die part, or the retraction height of the reduced material flow is limited by the other die part is when the stamping process of the workpiece takes place in the named multi-part die.
  • a particularly preferred embodiment is when the rounding of the ridge-side cutting edge of the workpiece after the embossing process has the same or at least substantially the same radius as the reduced cutting edge in the feed on the feed side of the workpiece.
  • substantially is meant here that a deviation between them both radii, or the embossed radius and the reduced pull-in height is ⁇ 25%, more preferably ⁇ 15% and even more preferably ⁇ 5%.
  • the invention thus achieves that rounded, ridge-side and intake-side cutting edges are present on the workpiece, which are at least almost, if not completely identical, designed with respect to their geometrical configuration, so that this is conducive to immediate suitability for the use of the workpiece produced.
  • any stamped or finely cut workpieces can be aftertreated by embossing.
  • the embossing can take place here after the punching in particular the fine cutting, but preferably in the same press, so that with the same stroke of this press both a stamped, in particular finely cut workpiece is formed as well as an embossed workpiece, in particular which is immediately ready for use, with between two Strokes the punched, in particular finely cut workpiece is transferred from the punching area of the press in the embossing area of the same press.
  • the embossing device of such a press can therefore form a so-called follow-on tool, which is always used in time after punching, in particular fineblanking, but always with the same stroke, with which the punching, in particular fine cutting is effected.
  • the invention is not limited to this preferred embodiment, but may also provide that the embossing device is a wholly separate device for punching, especially fineblanking press.
  • the invention can provide regardless of the collection reduction described above, particularly preferably in combination with this, that with the same stroke of the embossing device with which the ridge rounding is also the angle between a tangent of Cutting surface, which extends between the burr side and the feed side of the workpiece and the workpiece normal reduced, in particular completely eliminated.
  • the aforementioned tangent is preferably understood as meaning a tangent which is essentially applied to the cut surface in the thickness direction of the workpiece, that is to say therefore the intersections of the tangent with the pull-in and fill side surface of the workpiece have minimum spacing.
  • Such a tangent closes with the workpiece normal of the workpiece before performing the stamping process a larger angle than after the stamping process.
  • such a tangent and the workpiece normal are parallel to each other after the embossing process.
  • the invention can provide that the above-described reduction of the designated angle is made at each point along a circumferential direction of the punched, in particular finely cut, workpiece.
  • such an angular reduction can take place both on outer and on inner cutting or punching contours of the workpiece.
  • the invention can also provide that the described reduction in angle takes place only at selected predetermined positions along the circumferential direction of a sectional contour, in particular an outer or inner sectional contour, in particular thus not at all circumferential positions.
  • an angular reduction can be limited, for example, to those positions of a produced cut surface of a workpiece which require a particularly high precision or dimensional stability in the later to be used workpiece, in particular at other positions that do not require suchleyhaltmaschine or precision on the reduction in angle of Cut surface is dispensed with workpiece normal, so that the embossing according to the invention in such example, only partially can be made faster and / or with less wear of the tools used in comparison to an angle reduction along all possible circumferential positions of the cutting contour.
  • any stamped or finely cut workpieces can be treated.
  • the method according to the invention is not restricted to a specific contour shape of the at least one sectional contour of stamped, in particular finely cut, workpiece.
  • the invention provides, in a particularly preferred application, to carry out embossing according to the invention in lamellae used in automatic transmissions of, for example, motor vehicles and / or gears and in particular sprockets used for driving link chains or workpieces, which at least in sections, in particular on the outer contour, have a toothing.
  • the invention can provide that reducing the intake and reducing the angle of the cutting surface or a tangent adjacent thereto relative to the workpiece normal each at different circumferential positions the cutting contour of the workpiece is made.
  • a reduction of the indentation can be made and at other second positions along the circumferential direction of the sectional contour, the named angle reduction can be made.
  • the invention can also provide at certain third given in the circumferential direction positions to make both a reduction in feed and an angle reduction of the cut surface.
  • the respective first and respective second and / or respective third positions may have an equidistant angular distance from each other, in particular in the peripheral region of the workpiece in which teeth arranged are.
  • the invention is not limited to the application in gear-slats or gears here, but can be used with general validity for any type / shape of stamped, preferably finely cut workpieces, especially in any asymmetric workpieces and preferably in rotationally symmetrical die-cut, in particular finely cut Workpieces or in n-count rotationally symmetric punched and preferably finely cut workpieces are used.
  • the named gear plates or gears represent special cases of such an n-fold rotationally symmetrical design of workpieces.
  • the invention is preferably further developed by the embodiments described further below ,
  • the invention can provide that the die of the embossing device moves over the burr with an undersize relative to the workpiece, in particular to the position of the burr on the workpiece coming from the burr side of the workpiece.
  • the named undersize means that the inner free cross-sectional area of the die or at least part of a multi-part die has a free cross-sectional area that is smaller as the burr-side cross-sectional area of the workpiece in the burr-side workpiece surface plane.
  • the undersize is thus considered here substantially in a direction parallel to the workpiece surfaces between radially outer workpiece cutting surface and radially inner Gesenk lake or vice versa between radially inner workpiece cutting surfaces and radially outer Gesenk lake.
  • the Gesenk lake considered here are such surfaces of the die, which are parallel to the stroke direction, or workpiece normal.
  • the undersize is not present over the entire circumferential length of the punching or cutting contour of a workpiece between the workpiece and the die.
  • the invention that only in the range of these positions, the named undersize is present. It can thus be distributed on the die in the circumferential direction lying positions that have an undersize to the workpiece.
  • the same die to the workpiece may have an even dimension or an oversize, so that at these positions substantially no angular reduction of the cut surface takes place or such is at least not generated by a radial material displacement of workpiece material.
  • the invention can provide that with a pointing to the workpiece run-on slope on the die, the material of the workpiece in the direction of the workpiece interior and / or the feed side is displaced.
  • both the inventive angle reduction of the cut surface to the workpiece normal can be generated as well as the initially described reduction of the feeder.
  • the invention provides here that the absolute value of the undersize corresponds to at least 50% of the distance measured in a direction parallel to the workpiece plane in the punched workpiece, in particular in the finely cut workpiece at the interface between the feed end and the ridge tip.
  • the invention can also provide that with the die of the embossing device adjacent to the rounded ridge, a border running along the ridge-side punching contour, in particular fine-cut contour, is embossed, in the region of which the workpiece thickness is reduced compared to a workpiece region located outside this edge.
  • cold work hardening of the workpiece in the edge region can also be effected with this edge generation.
  • a thickness-reduced edge along the punching or fine-cut contour made in sheets with a thickness ⁇ 2 mm, preferably ⁇ 1.5 mm and even more preferably ⁇ 1 mm.
  • this embossing of a thickness-reduced edge can cause that is reduced by a material displacement in the axial or stroke direction, the opposite to the edge on the other side of the workpiece indentation in its height.
  • this development of the invention can contribute to a reduction in feed on the workpiece or even cause them alone.
  • the invention may generally but particularly preferably provide in connection with the aforementioned embodiment of the generation of a thickness-reduced edge, that the coming from the ridge side over the ridge and this rounding die of the embossing device is designed as a bell or sleeve.
  • bell or sleeve is not intended here to imply that the cross section of the die perpendicular to the stroke direction is rotationally symmetric, although this may be provided, but only that the die encloses with lateral wall areas an inner region into which dips the workpiece during embossing.
  • Such a die, in particular bell / sleeve may surround one of two ejectors between which the workpiece to be stamped is clamped during burr rounding.
  • the clamping of the workpiece between two ejectors causes the majority of the workpiece surface remains completely unaffected by the embossing process and the embossing due to the bell-shaped or sleeve-shaped execution of the die affects only the area of the punching or fine cutting contour.
  • the invention provides that the embossing device comprises a Gesenkoberteil and a lower die part, the considered in the stroke direction distance from each other in a direction perpendicular to the stroke direction decreases, in particular from Gesenkinneren to Gesenkrand and relative to the workpiece thus decreases from the workpiece interior to the cutting surface of the workpiece and preferably in the same stroke of the embossing device, with which the burr is rounded, also on the burr side and the feed side of the workpiece in the direction of the cutting surface increasing work piece thickness reduction is generated.
  • This method variant according to the invention is particularly preferably used in the production of teeth having teeth, preferably of gears, in particular sprockets, so as to produce the workpiece thickness reduction in a respective tooth region, preferably on the radially outer tooth region or over the entire respective tooth region between tooth tip and tooth base.
  • teeth having teeth preferably of gears, in particular sprockets
  • an inlet slope of the tooth tip can thereby be formed on a respective tooth region, which facilitates the immersion of the tooth tip in a respective chain link.
  • the invention can provide that at least in one surrounding area around a respective tooth tip at least one of the die parts preferably but both die top and Gesenkunterteil the workpiece has an excess and thereby a distance between the workpiece interface and Gesenkteilexpo Structure is formed in which during the workpiece thickness reduction workpiece material is displaced.
  • the method can provide that at least one of the die parts, preferably in turn die top part and die bottom part, has undersize beneath the abovementioned surrounding area of a respective tooth.
  • the inlet slope to facilitate the immersion of a sprocket teeth are created in a chain link, as well as in the area of the tooth base a large-scale plant over the entire workpiece thickness of the workpiece / sprocket be achieved to the chain link axis.
  • both the intake-side intake reduction takes place together with the burr-side ridge rounding and simultaneously in the tooth tip areas creating the radially outwardly increasing work piece thickness reduction for the realization of an inlet slope and in the dental base area aligning the cut surface or punching surface is generated in the sense of an angle reduction between the tangent and the workpiece normal.
  • FIG. 1A Left side in the Figure 1A is the workpiece W1 recognizable, which was produced in this example in the punching stage of a fine blanking device. At the bottom of the feed side of the usual for fineblanking or general punching indentation E can be seen. At the top side of the ridge side of the workpiece W1, the typical burr G is at the height h.
  • the workpiece W1 is transferred after punching / fine cutting in an embossing step.
  • die of the burr G is rounded, here with the radius R and thus produced by this step from the workpiece W1, the workpiece W2.
  • the feeder side, ie in particular the height of the feeder E remains unchanged.
  • FIG. 1B shows the ridge rounding in conjunction with a die GS.
  • Left side in the FIG. 1B is in this example finely cut, if necessary, but also only classically punched workpiece W1 shown, but here is now compared to the Figure 1A also the non-parallel inclination of the cutting surface SF visualized.
  • the oversize is considered here in the upper burr-side work plane between the burr-side cut surface edge and the inner die side surface. In this visualized case, they are aligned along the line L1.
  • FIG. 1B shows further that in addition to the rounded ridge also creates a bead by the rounding of the ridge and the material displacement caused thereby, which in fact causes a cross-sectional enlargement of the embossed workpiece W1 just below the burr side Maschinenzeitober lakeebene compared to unembossed workpiece W1. Furthermore, it can be seen that the cut surface inclination is unchanged relative to the normal of the workpiece surface.
  • the embossed workpiece W2 shows significant differences in geometry, in particular differences in the surface sizes of grat-side and einzugmener workpiece surface, as well as a workpiece normal non-parallel cutting surface SF, so that such an embossed workpiece a final treatment, e.g. required by grinding processes in order to be ready for use.
  • the punched or finely cut workpiece W1 is clamped between two ejectors A1 and A2.
  • the die GS is here bell-shaped and surrounds the upper ejector A1 and is in the stroke direction H relative to both ejectors and the clamped workpiece W1 movable to make the embossing step.
  • the embossing device is open, ie the embossed cut not yet executed.
  • FIG. 2B shows the closed embossing device according to the embodiment of the embossing step according to the invention.
  • the bell-shaped die GS has moved from the ridge side over the ridge G and has rounded this according to his recuperundung PR.
  • the die has an even or oversize to the workpiece in accordance with the previous definitions, but here also causes a reduction, preferably even an elimination, of the angle a included in this sectional view between the cut surface SF and the die side surface and that designated in the general description part Angle between said tangent to the cutting surface and the workpiece normal WN corresponds. Similarly, a reduction of the feeder E is effected.
  • Both the feed reduction and the angle reduction in the cutting surface is here due to the fact that the die GS has moved with its die bottom surface GSB in the closing stroke direction over the burr-side workpiece surface, thus thus the workpiece through the die GS in an edge region along the cutting contour in the thickness is reduced.
  • This reduction in thickness causes a material displacement in the axial direction and radially outward, whereby the angle reduction zund retraction reduction is generated.
  • this can also lead to work hardening of the material in the zones Z close to the edge radially inward of the cutting surface SF.
  • the Figure 2C shows a section of the embossed edge GR on the burr-side workpiece surface.
  • the width of the edge GR may preferably be in the range of 0.1 to 1 mm.
  • the thickness reduction of the workpiece thickness in this edge region may also be preferably 0.1 to 1 mm.
  • the invention may further provide that the radius of the embossment PR is at least substantially equal to the height of the reduced indentation in the embossed workpiece W2.
  • FIGS 3 show another embodiment of the method according to the invention, which also with the step of edge embossing according to Figures 2 can be combined.
  • FIG. 3A visualized on the lines L1 and arrow P1, that the die GS has an undersize relative to the workpiece W1.
  • FIG. 3B shows the situation after the execution of the embossing stroke.
  • the die here has moved material of the workpiece W1 radially inward and axially and thereby both reduces the Einzu so also reduces the angle of the cutting surface SF to the die side surface GSSF, or eliminated here.
  • the Gesenkêt Stimology has gone here only up to the level of the burr-side workpiece surface, so that here no edge was shaped, as the Figures 2 describe. Nevertheless, such an edge embossing would also be possible.
  • the recuperundung PR can also be chosen here so that the rounded ridge has a radius which corresponds at least substantially to the reduced retraction height. Preferably, deviations between this radius and the reduced pull-in height of less than 25% are achieved.
  • FIGS. 4 show a particularly preferred embodiment, for example, in n-count rotationally symmetrical workpieces, such as gear plates or gears, preferably sprockets can be used. It is also possible hereby to produce non-symmetrical workpieces or also those which have teeth only in sections, in particular on at least one section of the stamped / finely cut peripheral contour.
  • the FIG. 4A shows a sectional view of the embossing device parallel to the stroke direction or parallel to the workpiece normal WN.
  • the still unembossed workpiece W1 shown here again has an indentation of the height E, a ridge G and a workpiece surface normal WN non-parallel, inclined cutting surface SF.
  • the workpiece W1 is enclosed here by a die which has a die upper part GSO and a die bottom part GSU.
  • the two die parts GSO and GSU each have a stamping direction PR.
  • the recuperundung PR of the die lower part GSU serves to emboss the burr with a desired radius, wherein the Regerundung PR of the die upper part GSO limits the feed reduction to the value E1, as pressed during embossing material is thereby limited in the flow.
  • the die parts have an excess over the workpiece W1, or its cutting surface SF.
  • this oversize is present only in a tooth tip region of a teeth having workpiece W1, eg from a workpiece having only teeth in at least one partial region, such as, for example, in a seat adjustment element of a motor vehicle or else by a workpiece W1 punched / finely cut as a toothed wheel, preferably a chain toothed wheel.
  • Both figures further show an embodiment essential to the invention, according to which the distance of the two die parts in the stroke direction H, viewed from the inside of the workpiece, is reduced in the direction of the cut surface.
  • This reduction in distance is in the area B of both die parts, which in accordance with FIG. 4B extends over the tooth tip.
  • This area may optionally also extend over the entire tooth height, but is arranged at least in the tooth tip area.
  • This embodiment causes embossing not only to round the burr G and to reduce the draft E to E1, but also to reduce the workpiece thickness on the workpiece W1 with a reduction in thickness of a respective tooth of the radially outward radially outwardly increasing thickness reduction Teeth having workpiece, in particular gear generated.
  • the material pressed from the region B in the workpiece thereby finds its place in the distance between the cutting surface and the die side surface, due to the oversize given there.
  • Such a thickness reduction on each tooth of the toughened workpiece, in particular a toothed wheel, which has the same effect both on the burr side and on the intake side, can be determined, for example, by form an inlet region of the workpiece tooth for easier entry of the tooth into a respective chain link.
  • the FIG. 4B further shows that the die, or the two die parts GSO and GSU have an undersize in the respective tooth base region or tooth root region, that is to say the die parts with their die side faces GSF stand within the workpiece W1 in the stroke direction.
  • the die in particular its lower die part GSU on the ridge G of Workpiece can drive over, this embossed and at the same time reduces or preferably eliminates the angle of the cutting surface SF to workpiece normal by material flow.
  • the cutting surface in the tooth root region, in particular in the range of, for example, up to 50% of the tooth height above the tooth root region, the cutting surface can be parallelized to the workpiece normal, in particular thus improving the engagement between the tooth surfaces there and a chain link axis.
  • a workpiece which can be used immediately after the embossing step in particular a workpiece having teeth, and preferably a sprocket, preferably results in no or only reworking which is significantly reduced compared to the prior art.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Gears, Cams (AREA)
  • Arc Welding In General (AREA)
EP17000913.8A 2017-05-30 2017-05-30 Procédé de fabrication de pièces estampées Active EP3409392B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES17000913T ES2941059T3 (es) 2017-05-30 2017-05-30 Método de fabricación de piezas troqueladas
EP17000913.8A EP3409392B1 (fr) 2017-05-30 2017-05-30 Procédé de fabrication de pièces estampées
JP2018095358A JP6726701B2 (ja) 2017-05-30 2018-05-17 打抜き部品を製造するための方法
CN201810528403.1A CN108971295B (zh) 2017-05-30 2018-05-29 用于制造冲裁件的方法
KR1020180061119A KR20180131445A (ko) 2017-05-30 2018-05-29 스탬핑된 부품을 제조하기 위한 방법
US15/993,049 US11059087B2 (en) 2017-05-30 2018-05-30 Method for producing stamped parts
KR1020200040547A KR102253535B1 (ko) 2017-05-30 2020-04-02 스탬핑된 부품을 제조하기 위한 방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17000913.8A EP3409392B1 (fr) 2017-05-30 2017-05-30 Procédé de fabrication de pièces estampées

Publications (2)

Publication Number Publication Date
EP3409392A1 true EP3409392A1 (fr) 2018-12-05
EP3409392B1 EP3409392B1 (fr) 2022-12-28

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EP17000913.8A Active EP3409392B1 (fr) 2017-05-30 2017-05-30 Procédé de fabrication de pièces estampées

Country Status (6)

Country Link
US (1) US11059087B2 (fr)
EP (1) EP3409392B1 (fr)
JP (1) JP6726701B2 (fr)
KR (2) KR20180131445A (fr)
CN (1) CN108971295B (fr)
ES (1) ES2941059T3 (fr)

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DE102019213377A1 (de) * 2019-09-04 2021-03-04 Robert Bosch Gmbh Verfahren zur Herstellung eines Trennwerkzeugs
CN114505400A (zh) * 2022-02-24 2022-05-17 漳州锐腾电器有限公司 一种减少双层分切薄料叠片毛刺的模具及冲裁工艺
CN116603916A (zh) * 2023-05-30 2023-08-18 东莞太阳茂森精密金属有限公司 一种解决连续模连料位置毛刺的模具及工艺

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DE102016201433A1 (de) * 2016-02-01 2017-08-03 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Bearbeiten und/oder Herstellen eines Bauteils
CN114242952B (zh) * 2021-12-17 2023-12-08 蜂巢能源科技(无锡)有限公司 一种锂离子电池电极极片成型方法及成型装置
KR102538966B1 (ko) * 2023-02-22 2023-06-01 대우공업 (주) 버(burr) 커팅부가 구비된 프레스 성형장치

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KR20180131445A (ko) 2018-12-10
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JP6726701B2 (ja) 2020-07-22
CN108971295B (zh) 2020-10-27
KR102253535B1 (ko) 2021-05-18
US20180345350A1 (en) 2018-12-06
CN108971295A (zh) 2018-12-11
KR20200052252A (ko) 2020-05-14
US11059087B2 (en) 2021-07-13
ES2941059T3 (es) 2023-05-16

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