EP2802425B1 - Vorrichtung und verfahren zum tiefziehen von schalenteilen mit integriertem kopf- und zargenbeschnitt - Google Patents

Vorrichtung und verfahren zum tiefziehen von schalenteilen mit integriertem kopf- und zargenbeschnitt Download PDF

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Publication number
EP2802425B1
EP2802425B1 EP13700092.3A EP13700092A EP2802425B1 EP 2802425 B1 EP2802425 B1 EP 2802425B1 EP 13700092 A EP13700092 A EP 13700092A EP 2802425 B1 EP2802425 B1 EP 2802425B1
Authority
EP
European Patent Office
Prior art keywords
region
cutting
punch
drawing die
shaping
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
EP13700092.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2802425A1 (de
Inventor
Thomas Flehmig
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.)
ThyssenKrupp Steel Europe AG
Original Assignee
ThyssenKrupp Steel Europe 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 ThyssenKrupp Steel Europe AG filed Critical ThyssenKrupp Steel Europe AG
Publication of EP2802425A1 publication Critical patent/EP2802425A1/de
Application granted granted Critical
Publication of EP2802425B1 publication Critical patent/EP2802425B1/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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming
    • 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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing

Definitions

  • the invention relates to a device for producing shell parts having at least one bottom, a frame and optionally a flange portion of a flat or preformed board with a drawing die and a drawing die, wherein the drawing die has a molding area and at least one trim area, wherein the molding area of Drawing die at the completion of the drawing operation, the outer shape of the drawn and to be cut shell part in the bottom, Zargen- and optionally in the flange region, the drawing die has a molding area and at least one trim area, wherein the forming region of the drawing die at the completion of the drawing process, the inner shape of the drawing and has to be cut shell part with bottom, frame and optional flange area.
  • the invention relates to a method for the production of shell parts.
  • Such a device and such a method are eg in the WO-A-2008025387 disclosed.
  • Shell parts having a bottom portion, a frame portion, and optionally a flange portion are often made by drawing a flat or preformed metal sheet, preferably steel.
  • the prior art discloses methods and devices for producing, in particular, flange-type drawn parts with which drawing parts can be produced from a flat board by deep-drawing and trimming in one working stroke.
  • German patent application DE 10 2011 050 002.2 Although the applicant has achieved a solution for trimming the flange area in one step during the drawing. However, there is a similar problem for the Kopfbetre a drawn board. So far, at least two process steps are used, namely pulling the board and performing the cut. If, in addition, a so-called head trimming in the base and frame region and possibly in the flange region of a shell part, additional cutting steps are usually required.
  • the present invention seeks to provide an apparatus and a method for the production of shell parts by deep drawing available with which or with which with as few steps, the production of the shell part and at the same time a dimensionally accurate trim at least in Zargen- and Floor area of the shell part can be achieved.
  • the above object is achieved according to the teaching of the present invention with a device having the features of the preamble of claim 1, characterized in that the trimming portion of the drawing punch forms a cutting contour with the forming region of the drawing die, with which a separation of the trimming during and at the completion of the drawing process - And shape of the board at least in Zargen- and bottom portion of the finished molded shell part preferably in the last drawing operation is feasible.
  • a finished, drawn shell part can be produced with bottom and Zanzgenberough.
  • the shaping region of the drawing punch or of the drawing die forms the region which leads to the transformation of the essentially planar blank or also preformed blank to the finished shell part.
  • the trimming area serves to provide material for a defect-free drawing operation, so that an e.g. wrinkle-free pulling the molding area of the board is guaranteed.
  • the forming area of the drawing punch is recessed in comparison with the trimming area of the drawing punch, and the forming area of the drawing die is increased in comparison to the trimming area of the drawing die.
  • the height difference between the trimming and shaping area corresponds at least to the wall thickness of the board to be reshaped. Due to the fact that the forming area of the drawing punch is recessed in comparison to the trimming area of the drawing punch, a normal drawing operation is achieved, as this does not cause any additional material in the bottom area of the board is required due to the greater draw depth of the trim area of the drawing punch.
  • the height difference between the forming and trimming areas allows dimensionally accurate and complete separation of the finished shell part during and at the completion of the drawing operation.
  • the trimming area of the drawing punch is increased and the forming area of the drawing die is formed recessed or a combination of recessed and raised areas, for example the trimming area of the drawing punch with corresponding raised and recessed forming areas in the drawing die is used.
  • the shell part can be completely cut free from the formed blank during the drawing process.
  • the cutting contour between the cutting area of the drawing punch and the forming area of the drawing die in the bottom area and optionally in the flange area Lengthwise varying engagement heights on.
  • the varying engagement heights ensure that, during the retraction of the draw punch into the draw die, the engaged die portions of the die and die sink engage different depths of insertion of the draw die just prior to completion of the draw operation and thus a continuous separation process along the cutting contour. which begins point or area, is guaranteed.
  • the various engagement heights between the molding area and the trimming area of the drawing die and / or the drawing die are provided by a designated inlet contour.
  • the inlet contour can have different shapes.
  • a round inlet contour is at least partially provided in areas of the cutting contour of the drawing punch in which a cutting edge is arranged in the corresponding region of the drawing die and / or in the drawing punch at least partially a cutting edge in the areas of the cutting contour of the drawing die provided in which a round inlet contour is provided in the drawing die.
  • At least the cutting contour forming parts of the drawing punch and / or the drawing die are designed as exchangeable inserts, since they are subjected to increased wear and can then be easily replaced.
  • a planar board support area is provided, so that the board can be inserted in a simple manner prior to forming and trimming, for example automatically, in the device.
  • particularly good cutting results could be achieved in that the inlet contour has at least a radius of 0.5 mm and the cutting edge has a radius of not more than 0.05 mm, in particular not more than 0.02 mm.
  • the inlet contour has at least a radius of 0.5 mm and the cutting edge has a radius of not more than 0.05 mm, in particular not more than 0.02 mm.
  • the flow of material can be additionally controlled by providing a hold-down device for holding down the sheet to be pulled during drawing.
  • the object is achieved by a method for producing shell parts with a bottom, frame and optionally a flange portion of a flat or preformed circuit board by pulling using the device according to the invention, wherein a metal circuit board, preferably steel, is inserted into the device and pulled by retraction of the drawing die in the drawing die the board and is trimmed during the forming process at least in the bottom and Zargen Scheme by the provided cutting contour, so that a trimming area and a molding area of the board is at least partially separated and a finished shell part, which has substantially the shape of the molding area of the drawing die and the drawing die, is produced.
  • a metal circuit board preferably steel
  • a shell part can preferably be produced from a flat or preformed board in a last drawing operation, which is simultaneously trimmed at least in the bottom and frame region.
  • shell parts can be produced in a particularly economical manner.
  • this is formed by the forming region of the drawing punch and the drawing die Shell part with completion of the drawing process completely separated from the trim area.
  • the cutting line partially material, preferably in the form of webs, to stand, i. to produce an interrupted cut line, whereby the shell part is at least partially still connected to the trim area and at the same time can be removed from the tool.
  • the cut area can then be separated from the good part.
  • the trimming of the board in the ground and optionally in the flange area is preferably carried out at least partially continuously starting from the first engaged areas of the cutting contour between the molding area and trimming area of the drawing punch and drawing die. Due to the fact that not the complete cutting contour is engaged at a certain depth of insertion of the drawing punch, it is possible to achieve a continuous trimming of the board during the drawing process or at the completion of the drawing process.
  • the board is preferably heated to a temperature above the AC3 temperature point, hot formed, so that there is a more easily formed structure in the board. Will the board in the closed state of the tool quenched, a press hardening can be achieved if the material of the board allows a transformation into a substantially martensitic structure.
  • FIG. 1a A shell part 1 with a bottom portion 2, a frame portion 3 and a flange 4.
  • a corresponding shell part 1 can be used for example for producing a support of a motor vehicle, wherein the shell part 1, for example, connected to a further shell part on the flanges 4 and can form a stable hollow body.
  • a section line S which indicates the section line in which the Fig. 2 to 4 are shown.
  • a schematic plan view shown board 5 which has a trimming area 5a and a molding area 5b, wherein in the present embodiment, the trimming area 5a is arranged circumferentially around the molding area 5b.
  • the trimming area 5a forms the area of the board, which after forming and trimming is no longer part of the finished shell part 1.
  • Corresponding trim and shaping areas are also provided in the device for producing the shell parts in order to differently shape and separate the different areas.
  • FIG. 2 shows a planar board 5, which is inserted into a drawing die 6.
  • the drawing punch 7 comprises two hold-downs 7a, with which the material feeder can be controlled when pulling.
  • the drawing punch 7 has a trimming area 8 and a forming area 9.
  • the drawing die 6 also has a trimming area 8 'and a forming area 9'.
  • the molding area 9 of the drawing punch 7 has the inner mold 10 (FIG. Fig. 1 ) of the shell part and the mold portion 9 'of the drawing die 6, the outer mold 11 of the finished shell part 1.
  • the trimming area 8 of the drawing punch 7 forms, with the forming area 9 'of the drawing die, a cutting contour 12 which makes it possible to separate the forming area 5b of the formed blank 5 and thus the shell part 1 from the trimming area 5a of the board 5 at least in the bottom area 2 and in the frame area 4 , The separation takes place during the drawing process, as in the Fig. 3 and 4 will be shown.
  • the cutting contour 12 is preferably provided by inserts 7b, 6a both in the drawing punch 7 and also in the drawing die 6 in order to be able to carry out a simple replacement when worn.
  • the drawing punch 7 dips into the drawing die 6 and deforms the blank 5 with the protruding cutting area 8 in such a way that the blank is drawn without folds in the forming area 9 or 9 'of the drawing die 6 or of the drawing die 7.
  • the forming portion 9 of the drawing die is formed recessed relative to the trimming portion 8 of the drawing die, wherein the height difference a between the trimming area and the forming area of the drawing punch is at least the wall thickness of the board.
  • the forming area 9 'of the drawing die has an inlet rounding 13 at the transition to the cutting area 8'.
  • the trimming area 8 of the drawing punch 7 or the trimming area 8 'of the drawing die 6 also runs circumferentially around the flange area 4 of the finished shell part 1, so that the edges of the flange area 4 are trimmed during the drawing process and thus free from influences of the drawing process.
  • the Fig. 5 and 6 show in a perspective view of the drawing and cutting process on a formed board 5, which has a trimming area 5a and a molding area 5b.
  • a formed board 5 which has a trimming area 5a and a molding area 5b.
  • the shell part 1 or the forming area 5a of the board is completely separated out until the completion of the drawing process, during the drawing process, the cutting process begins on the frame 3 of the later shell part 1.
  • the trimming is preferably carried out both in the frame area 3 and in the floor area 2.
  • the flange 4 is cut free at the end of the drawing process.
  • Fig. 7 and Fig. 8 show an embodiment of the drawing punch 7 and the drawing die 6 in a perspective view.
  • the molding area 9 'in the drawing die is raised in relation to the immediately adjacent cutting area 8'.
  • the molding area 9 formed recessed relative to the immediately adjacent Be440 Victoria 8. This ensures that over the projecting areas of the trimming area 8 of the drawing punch 7, the board can be pulled wrinkle-free and without damage by the "sharp" edges of the tool to then the shape of the molding area 9 'or 9 of the drawing die 6 respectively of the drawing punch. 7 to accept.
  • the shell part 1 is completely trimmed over the cutting contour 12 of the drawing punch 7 or cutting contour 12 'of the drawing die 6.
  • the Zargen Scheme it comes to a complete overlap of the cut edges of the drawing punch 7 and the drawing die. 6
  • Fig. 9 is now shown schematically the cutting contour 12 of the drawing punch 7 for the bottom and possibly flange area.
  • the section line 16 shows a varying height, so that the cutting process begins first in the areas 16a and continues with increasing depth of insertion of the drawing punch in the arrow direction. As a result, the cutting forces can be kept moderate.
  • the Engagement line 7 of the cutting contour 12 are different forms conceivable, for example, a linear, a wavy or, for example, a sawtooth course.
  • the drawing punch 7 is provided with a recessed molding area 9.
  • the drawing die 6 of the embodiment has an elevated molding area 9 '. It is also conceivable, however, as already stated, that the drawing die 6 has a recessed molding area and the drawing punch 7 has a protruding molding area or a combination of both is provided.
  • a flat or, for example, preformed board 5 can be formed into a shell part 1 with an optional flange area 4 in a last drawing operation and at the same time be cut to size.
  • the typical Kopfbetrethe the drawn parts which usually takes place in several steps, is then no longer necessary.
  • the production of shell parts 1 can be made significantly more economical.
EP13700092.3A 2012-01-12 2013-01-09 Vorrichtung und verfahren zum tiefziehen von schalenteilen mit integriertem kopf- und zargenbeschnitt Not-in-force EP2802425B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012100230.4A DE102012100230B4 (de) 2012-01-12 2012-01-12 Vorrichtung und Verfahren zur Herstellung von Schalenteilen
PCT/EP2013/050271 WO2013104650A1 (de) 2012-01-12 2013-01-09 Vorrichtung und verfahren zum tiefziehen von schalenteilen mit integriertem kopf- und zargenbeschnitt

Publications (2)

Publication Number Publication Date
EP2802425A1 EP2802425A1 (de) 2014-11-19
EP2802425B1 true EP2802425B1 (de) 2015-09-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13700092.3A Not-in-force EP2802425B1 (de) 2012-01-12 2013-01-09 Vorrichtung und verfahren zum tiefziehen von schalenteilen mit integriertem kopf- und zargenbeschnitt

Country Status (7)

Country Link
US (1) US9289813B2 (ko)
EP (1) EP2802425B1 (ko)
JP (1) JP6050382B2 (ko)
KR (1) KR101520442B1 (ko)
CN (1) CN104080555B (ko)
DE (1) DE102012100230B4 (ko)
WO (1) WO2013104650A1 (ko)

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CN104507133B (zh) * 2014-12-08 2018-07-20 华为技术有限公司 语音切换的方法和装置
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
US11041658B2 (en) * 2017-09-25 2021-06-22 Noritz Corporation Method of producing exterior case for hot water unit, exterior case for hot water unit and hot water unit
CN108080481B (zh) * 2018-01-30 2019-04-23 深圳市艺峰自动化装备有限公司 一种集导向、定位、切边及排料一体的装置
KR101897244B1 (ko) * 2018-05-09 2018-09-10 온창용 금속 캡 드로잉 성형장치
WO2020035915A1 (ja) * 2018-08-15 2020-02-20 ユニプレス株式会社 プレス成形装置、及び製造方法
CN110421067B (zh) * 2019-07-19 2020-06-09 华中科技大学 一种蓄压器壳体的分步式成形装置及方法
CN110899499A (zh) * 2019-11-21 2020-03-24 无锡鑫盛电源材料有限公司 一种快换钢壳拉伸组合式模具
CN113351744B (zh) * 2021-05-14 2022-06-21 天津一汽丰田汽车有限公司 防止边缘开裂的高强钢中厚板冲压件、制作方法及应用
CN114011960A (zh) * 2021-09-27 2022-02-08 深圳市信维通信股份有限公司 一种l形外形薄料金属壳体深拉伸冲压成形工艺

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Publication number Publication date
US20140331731A1 (en) 2014-11-13
JP2015505276A (ja) 2015-02-19
CN104080555A (zh) 2014-10-01
DE102012100230B4 (de) 2017-10-19
CN104080555B (zh) 2016-09-14
KR20140109941A (ko) 2014-09-16
JP6050382B2 (ja) 2016-12-21
US9289813B2 (en) 2016-03-22
EP2802425A1 (de) 2014-11-19
KR101520442B1 (ko) 2015-05-15
WO2013104650A1 (de) 2013-07-18
DE102012100230A1 (de) 2013-07-18

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