EP3047919A1 - Gleichzeitiges abkanten und biegen von zwei kanten auf einem tiefziehprodukt - Google Patents

Gleichzeitiges abkanten und biegen von zwei kanten auf einem tiefziehprodukt Download PDF

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Publication number
EP3047919A1
EP3047919A1 EP15198765.8A EP15198765A EP3047919A1 EP 3047919 A1 EP3047919 A1 EP 3047919A1 EP 15198765 A EP15198765 A EP 15198765A EP 3047919 A1 EP3047919 A1 EP 3047919A1
Authority
EP
European Patent Office
Prior art keywords
blade
edge
stamp
folding
frame
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.)
Withdrawn
Application number
EP15198765.8A
Other languages
English (en)
French (fr)
Inventor
Jean Richard SPERA
Bertrand FREMONT
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP3047919A1 publication Critical patent/EP3047919A1/de
Withdrawn legal-status Critical Current

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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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • 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
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/082—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles
    • B21D19/084—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for making negative angles with linear cams, e.g. aerial cams
    • 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
    • B21D22/22—Deep-drawing with devices for holding the edge of the blanks
    • 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
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards

Definitions

  • the invention relates to the field of press forming, particularly of a motor vehicle body. More particularly, the invention relates to forming tooling by stamping and to a forming process by such tooling.
  • a stamp is a metal part in progress or at the end of manufacture, in thin sheet metal, obtained by stamping.
  • the figure 1 is a view of a stamp 2 after an initial shaping by stamping giving it its main forms. After such a shaping, several times may be necessary for finishing shaping.
  • the covers may include, for example, a drop for example of an edge of the stamp. Falling means folding by a folding blade movement in a direction generally perpendicular to the main extent of the stamping. The thus fallen edge then extends generally vertically when the stamping is generally horizontal.
  • An edge 4 of the stamping 2 may previously be necessary to clamp the stamp 2 by a blank clamp.
  • the recoveries may further comprise a folding of fastening edges and / or punching of fastening orifices. These resumptions are generally carried out in several successive stages after the initial stage.
  • the patent document EP 1 535 674 B1 discloses a tool comprising a receiver element mounted on a first frame.
  • the receiving element comprises, in this case, a movable part adapted to cooperate with a folding punch.
  • the tooling comprises a presser movably mounted on the first frame and able to press the pressed against the receiving element for the purpose of shaping.
  • the tooling finally comprises a slide on which the punch is mounted.
  • the latter comprises two portions adapted to cooperate with the receiving element so as to make two folds.
  • the teaching is interesting in that the two bends are made during the same stamping pass. Both folds, however, are made in a single edge of the stamp.
  • the tool in question is moreover intended more preferably for forming an edge against undercut.
  • the patent document JP 4,998,322 B2 discloses a stamping tool capable of performing two stamping operations on a previously shaped stamping.
  • the resumptions are in this case a punching of a first edge and the folding of two other edges distinct from each other and distinct from the first edge.
  • This teaching is interesting in that these folding and punching operations are performed during a single stamping pass.
  • the teaching is limited, as regards folding, to folded edges along fold lines extending in the same direction.
  • the object of the invention is to propose a stamping forming solution that overcomes at least one of the aforementioned drawbacks. More particularly, the object of the invention is to propose a solution for folding edges that are distinct from an embossed product that is economical.
  • the subject of the invention is a stamping forming tool, in particular of a motor vehicle body, said tool comprising: a receiving element with a receiving surface intended to receive the stamping; and a presser adapted to press the stamped against the receiving element; a first folding blade adapted to fold a first edge of the stamped against the receiving element; remarkable in that it comprises, in addition: a second folding blade adapted to fold a second edge of the stamping; means for moving the second blade towards the second edge of the stamping, said means being configured to be active after the first blade has bent the first edge of the stamp. These means are active only when the first blade has finished folding the first edge.
  • the second folding blade moves in a direction transverse to the direction of movement of the first blade, said directions preferably forming an angle of between 70 ° and 110 °.
  • the tool is configured so that the second blade bends the second edge of the press against a portion of the first blade.
  • the portion of the first blade for folding the second edge is distinct from the area of contact with the stamping for folding the first edge.
  • the first blade has a V-shaped nose, the areas of contact with the stamping for the first and second folds being located on each of the sides of said V-shape.
  • the angle formed by the V-form is between 10 ° and 120 °, preferably between 15 ° and 70 °, more preferably between 20 ° and 50 °.
  • the tooling further comprises: a first frame, preferably greater, supporting the first folding blade and the presser, said presser being able to slide relative to said frame against an elastic force; a second frame, preferably lower, supporting the receiving element; a slide slidably mounted relative to the receiving member and adapted to move the second folding blade; a cam adapted to cooperate with the slider in order to cause the displacement of said slider on approaching the first and second frames.
  • the slide is slidably mounted on the receiving element.
  • the first folding blade is rigidly fixed to the first frame, the receiving element being able to slide relative to the second frame against an elastic force and the cam being fixed to the second frame.
  • the tooling comprises several springs, preferably gas springs, the receiving element being able to slide relative to the second frame by crushing said springs.
  • the receiving element forms an upper face for receiving the stamping and a lower face for mounting the slide, said inner face being offset laterally from said upper face.
  • the slide is slidably mounted on the second frame.
  • the first blade is slidably mounted relative to the first frame against an elastic force and the cam is fixed to the first frame, the receiving member being preferably rigidly fixed to the second frame.
  • the second blade is supported by the slide.
  • the tooling is configured so that the slide cooperates with the cam for moving the slide only when the first blade has finished folding the first edge of the stamping.
  • the support springs of the receiving element are configured to resist the folding force of the first edge.
  • the surface of the receiving element intended to receive the stamp is a generally elongated punch in a main direction, the first blade being preferably elongated and laterally wedging said surface.
  • the method is intended for shaping a longitudinal structural profile of floor and / or stretcher.
  • the measures of the invention are interesting in that the folding of the two edges of the stamping are performed in a single stamping pass which is economical. Indeed, the first and second folding blades are able to perform the folding first and second edges of the stamping one after the other and during the same stamping pass.
  • the figure 1 is a perspective view of a stamping 2 of a motor vehicle body, described briefly above in connection with the discussion of the state of the art.
  • the stamp 2 is a longitudinal structural profile of floor and / or stretcher of a motor vehicle, it comprises a first edge 4 extending to the base of the stamp 2, said first edge being intended to be grave ; it also comprises a second edge 6 distinct from the first edge 4 and which is intended to be folded to form a fastening tab.
  • the figure 2 is a simplified perspective view of a stamping forming tool 8 according to the invention.
  • Tooling 8 shown schematically comprises upper and lower frames 12 which are shown schematically.
  • the tool 8 comprises a first frame, in this case the upper frame 10, fixedly supporting a first folding blade 14; the upper frame 10 also supports a presser (not shown) mounted movably against an elastic force such as one or more springs.
  • the tooling 8 comprises a second frame, in this case the lower frame 12, supporting a receiving element 16 comprising a receiving surface 18 adapted to receive the stamp 2.
  • the receiving surface 18 extends as a punch shape lying in a main direction "L".
  • the first blade 14 is also of elongated shape and is able to conform laterally to the surface 18 of the receiving element 16 in order to perform a folding, in this case a fall.
  • the receiving element 16 is movably supported by the lower frame 12, the mobility being provided by support springs 20, preferably gas springs.
  • the tool 8 also comprises a second blade (not visible) capable of folding the second edge (not visible) of the stamping 2, and a slide 24 slidably mounted relative to the receiving member 16 and able to move the second folding blade.
  • the tooling 8 finally comprises a cam 26 adapted to cooperate with the slider 24 in order to cause the displacement of the slider 24 during a combination of the upper and lower frames 10 and 12.
  • the tool 8 is configured to perform a movement of the slider 24 after the first blade 14 has folded the first edge 4 of the stamp 2; this configuration is seen in more detail in relation to the figure 4 .
  • the slider can be slidably mounted on the second frame; the first blade is then slidably mounted relative to the first frame against an elastic force and the cam is fixed to the first frame, the receiving member being rigidly fixed to the second frame.
  • the slide 24 is slidably mounted directly on the receiving element 16, more precisely on an inner face 28 of the receiving element 16.
  • inner face it is meant that the face is opposite to the "outer face" of the receiving member 16 receiving the stamping 2.
  • L tooling 8 is here presented in the initial step a) of the form of the pressed according to the invention which is the establishment of the stamp 2 on the receiving surface 18 of the receiving element 16.
  • the figure 3 is a vertical sectional view of the forming tool 8 according to the invention.
  • the tool 8 is presented in the subsequent step b) of the method, said step being the pressing of the stamp 2 against the receiving surface 18 of the receiving element 16.
  • the upper frame 10 performs a first approach to the lower frame 12, so that the presser 15 can press the stamp 2 against the receiving member 16, the pressing force being achieved by compressing the spring 29 fixing the presser 15 to the first frame 10.
  • the receiving element 16 is at a distance from the bottom of the lower frame 12, the springs 20 supporting said element being in extension resistant to the force of the presser 15. It can be seen the blade 14 mounted fixed relative to the frame 10.
  • the figure 4 is a vertical sectional view of the forming tool 8 according to the invention.
  • the tooling 8 is presented in the subsequent step c) of the method, said step being the folding of the first edge 4 of the stamp 2.
  • the upper frame 10 makes a second approach to the lower frame, the first folding blade 14 can cooperate laterally with the receiving surface 18 of the receiving element 16 so that the first edge 4 of the stamp 2 can fall.
  • the receiving element 16 is stationary, the springs 20 supporting said element being configured to withstand the folding force of the first edge 4.
  • the tool 8 is configured so that the slide (not shown), the same one mounted on the receiving element 16, cooperates with the cam for the displacement of the slide only when the first blade 14 has finished folding the first edge 4 of the stamping 2.
  • the figure 5 is a top view of the forming tool 8 according to the invention and in step c) of the method as described in connection with the figure 4 ).
  • the receiver element 16 which carries the slider (not visible) presented in relation with the figure 2 ; it is also possible to see to the right of the image the first folding blade 14.
  • stamp 2 At the top right of the image, we can see stamp 2.
  • the first blade 14 includes a portion 32 distinct and opposed to the contact zone 34 with the stamp 2 for folding the first edge; this portion 32 of the first blade 14 is intended for receive the second edge 6 of the stamping 2.
  • the first blade 14 has in this case a V-shaped nose 36, the contact zones 34 and 32 with the stamping for the first and second edges 4 and 6, respectively , being located on each of the flanks of said shape.
  • the angle formed by the shape of V is in this case between 30 ° and 60 °.
  • the slide (not visible) is active only when the first blade 14 has finished folding the first edge.
  • the figure 6 to 9 are views of the forming tool 8 in step d) of the method according to the invention which is a folding step of the second edge 6 of the stamping.
  • the figure 6 is a vertical sectional view of the forming tool 8 according to the invention.
  • Tooling 8 is presented in the subsequent step d) of the method which is the folding of the second edge (not visible) of the stamping 2.
  • the folding of the second edge is achieved by the further approximation of the upper and lower frames 10 and 12.
  • the tooling 8 may comprise a stop (not shown) between the presser 15 and the upper frame 10 so that the presser 15 may be secured to the upper frame 10 during this further approximation.
  • the receiving element 16 is movable relative to the lower frame 12 due to the effort of bringing the frames closer together.
  • the mobility of the receiver element 16 is achieved by compressing the support springs 20 of said element.
  • the image presents the tooling 8 at the end of the additional approach, and parallel with the folding of the second edge.
  • the receiving element 16 abuts against the lower frame 12, the support springs 20 are in the compressed state.
  • the figure 7 is a top view of the forming tool 8 according to the invention in step d) of the method presented in connection with the figure 6 .
  • the second folding blade 30 can move in this case perpendicular to the direction of movement of the first blade 14; the first folding blade 14 moves in this case in a vertical direction, the second folding blade 30 moving in a horizontal direction.
  • An arrow indicates the direction, from the perspective of the view, of the movement of the second blade along the portion 32 of the first blade 14.
  • the figure 8 is a perspective view of the forming tool 8 according to the invention in step d) of the method presented in connection with the figure 6 ).
  • the upper frame and the tools carried by said frame are however not shown to facilitate the view of the tool 8 at the lower frame 12.
  • the receiving element 16 is in a position close to the lower frame 12; the slide 24 having cooperated with the cam 26 for the displacement of the second blade 30.
  • the figure 9 is a side view of the embossing tool 8 according to the invention in step d) of the method presented in connection with the figure 6 ).
  • the upper frame is not shown. It is possible to see in the foreground of the image the slider 24 supported by the inner face 28 of the receiving member 16 and in its slidable position (towards the right in the image) relative to the receiving member 16 and this to the difference in its position (to the left) illustrated in relation to the figure 2 ; this movement causes the displacement of the second blade (not visible). It can be seen in the background stamp 2, it can be noted that the latter extends in a mean direction inclined relative to the horizontal.
  • the lower frame 12, on which the support springs 20 are fixed forms a mean plane inclined substantially in the inclined mean direction of the stamping, the average inclination of said plane being made via steps; the latter are in this case the fixing locations of the springs 20.
  • the configuration of the springs 20 depending on the resistance force to be brought during the folding of the first edge of the stamp 2 to ensure the immobility of the element receiver 16 in step c) of the process, they can be substantially massive, in particular for the folding of the first edge of a stamp 2 which may be of a yield strength of more than 300 MPa, for example greater than 400MPa.
  • the bringing together of the upper and lower frames 12 of the tool 8 can be achieved by a displacement of the upper frame, the lower frame remaining stationary.
  • the arrangement of the support springs 20 on the lower frame 12 in the advantageous embodiment of the invention is interesting in that it promotes the lightening of the mobile frame, in this case the upper frame.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP15198765.8A 2015-01-21 2015-12-09 Gleichzeitiges abkanten und biegen von zwei kanten auf einem tiefziehprodukt Withdrawn EP3047919A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1550487A FR3031685B1 (fr) 2015-01-21 2015-01-21 Tombage et pliage simultane de deux bords sur un embouti.

Publications (1)

Publication Number Publication Date
EP3047919A1 true EP3047919A1 (de) 2016-07-27

Family

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Family Applications (1)

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EP15198765.8A Withdrawn EP3047919A1 (de) 2015-01-21 2015-12-09 Gleichzeitiges abkanten und biegen von zwei kanten auf einem tiefziehprodukt

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Country Link
EP (1) EP3047919A1 (de)
FR (1) FR3031685B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111922208A (zh) * 2020-08-19 2020-11-13 滕云伟 用于机械加工的金属薄片翻边装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1360570A (en) * 1970-04-08 1971-10-14 Junkers & Co. Gm. B. H Apparatus and method for forming corners in sheetmetal parts
JPH05138267A (ja) * 1991-11-14 1993-06-01 Toyota Motor Corp 複合加工プレス型
JP2007210029A (ja) * 2006-02-13 2007-08-23 Infec Corp 車両用ボディパネルのサイドベンド加工装置及びその加工方法並びに車両用ボディパネル
EP1535674B1 (de) 2003-11-27 2007-09-19 Yourbusiness Co., Ltd. Formwerkzeug für eine Presse zum Biegen eines negativen Winkels
JP4998332B2 (ja) 2008-03-07 2012-08-15 トヨタ自動車株式会社 プレス加工装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1360570A (en) * 1970-04-08 1971-10-14 Junkers & Co. Gm. B. H Apparatus and method for forming corners in sheetmetal parts
JPH05138267A (ja) * 1991-11-14 1993-06-01 Toyota Motor Corp 複合加工プレス型
EP1535674B1 (de) 2003-11-27 2007-09-19 Yourbusiness Co., Ltd. Formwerkzeug für eine Presse zum Biegen eines negativen Winkels
JP2007210029A (ja) * 2006-02-13 2007-08-23 Infec Corp 車両用ボディパネルのサイドベンド加工装置及びその加工方法並びに車両用ボディパネル
JP4998332B2 (ja) 2008-03-07 2012-08-15 トヨタ自動車株式会社 プレス加工装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111922208A (zh) * 2020-08-19 2020-11-13 滕云伟 用于机械加工的金属薄片翻边装置

Also Published As

Publication number Publication date
FR3031685A1 (fr) 2016-07-22
FR3031685B1 (fr) 2017-01-20

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