EP0672479A1 - Stanzvorrichtung metallischer Profile - Google Patents

Stanzvorrichtung metallischer Profile Download PDF

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Publication number
EP0672479A1
EP0672479A1 EP95400309A EP95400309A EP0672479A1 EP 0672479 A1 EP0672479 A1 EP 0672479A1 EP 95400309 A EP95400309 A EP 95400309A EP 95400309 A EP95400309 A EP 95400309A EP 0672479 A1 EP0672479 A1 EP 0672479A1
Authority
EP
European Patent Office
Prior art keywords
punch
profile
opening
opposite
piston
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
EP95400309A
Other languages
English (en)
French (fr)
Other versions
EP0672479B1 (de
Inventor
Michel Bouzignac
Christian Zaccarioto
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.)
Alcan France SA
Original Assignee
Alcan France 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 Alcan France SA filed Critical Alcan France SA
Publication of EP0672479A1 publication Critical patent/EP0672479A1/de
Application granted granted Critical
Publication of EP0672479B1 publication Critical patent/EP0672479B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/243—Perforating, i.e. punching holes in profiles
    • 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
    • B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies

Definitions

  • the present invention relates to a punching tool intended in particular to produce on a continuous and elongated tubular metal profile, in a closed section on itself thereof, a clear opening of given contour and in particular of rectangular shape and preferably two openings of this kind, identical and facing one another on two parallel faces of this profile, in particular for the mounting of an accessory to be fixed thereon.
  • the invention relates to a tool of this kind, capable of piercing a very long profile which itself has a generally rectangular section, in particular of the type of those used to constitute the chassis of a fixed frame or of a movable opening of a door, window or the like, in order to mount in the openings made in this profile, at a suitable distance from its ends, the shell of a handle or of a lock for controlling or immobilizing the opening - screw of the frame, making it possible to ensure its pivoting or sliding movement relative to the latter.
  • these openings which have two large sides parallel to the longitudinal direction of the metal profile, are produced by milling, which constitutes a long and relatively expensive operation, such a process being nevertheless until now necessary due to the relative position of the openings to be made along the length of the profile, these openings being located at a generally significant distance from the open ends of the latter and not in principle making it possible to implement the conventional punching technique faster and at minimal cost .
  • this last technique normally requires that the punching tool which cuts by pressing from the outside the metal sheet of the profile according to a movement controlled perpendicular to the surface to perforate, either associated with a die or anvil placed on the other side of the sheet to prevent the metal from being carried away or torn towards the inside of the profile when the tool punctures the surface to be cut.
  • the very structure of the profile includes internal webs perpendicular to the faces where the openings are to be made, suitable for supporting the pressed sheet metal and cut simultaneously by the punch, limiting the aforementioned drawback, the relatively large metal chip for the suitable housing of the accessory to be mounted in this opening, risks falling inside the profile, which leads to difficulties in obtaining its subsequent removal and causes a loss of time.
  • the use of a usual punching tool cannot avoid the deformation of the sheet along the short sides of the opening which are more or less forced towards the inside of the profile, the opening does not have a perfectly regular profile and in the plane of the surface of the profile, which causes difficulties for the subsequent mounting of the accessory.
  • the subject of the present invention is a punching tool which overcomes these drawbacks, by making it possible to obtain clean cuts, in particular of rectangular shape, with two long sides and two short sides respectively parallel in a metal section of great length and whose longitudinal direction is that of the long sides of the cutouts, these being produced quickly and efficiently with precise positioning in two opposite parallel faces of the profile to obtain their exact facing.
  • the tool considered for producing in a very long tubular metal section with closed section on itself and having two opposite parallel faces arranged horizontally, with one and preferably two identical rectangular openings, respectively in the one and the other of these faces, substantially in the middle of the length of the profile, the long sides of these openings extending in the longitudinal direction of the profile, which internally comprises at least two parallel transverse webs, perpendicular to the opposite faces and parallel to the long sides of the openings, the short sides of which are substantially equal to the distance which separates these sails, is characterized in that it comprises a punch of generally parallelepiped shape, the sharp lower lateral edges of which are parallel to the large sides of the openings, the width of the punch being equal to that of the small c removed while its length is less than that of the long sides, the punch being integral with a movable control piston inside a fixed support, having an open lateral groove for positioning the profile under the punch in line with an opening to be made by vertical insertion of the latter from top to bottom in the profile through the face to
  • the punching tool thus arranged makes it possible to carry out, firstly and following a displacement from the top to the bottom controlled by the piston, a blank for cutting a chip in the upper face of the profile disposed horizontally in the groove of the support, along the long sides of the opening to be made, the cutting of the sheet occurring in the immediate vicinity of the internal webs of the profile which for them play the role of an internal matrix, this cutting being obtained along a clean line , following the plans of the two sails respectively.
  • the lower transverse edges of the punch cut the sheet metal parallel to the short sides of the opening but, according to lines located towards the inside of the opening, due to the length of the punch less than that of the long sides of the latter. , these lines and the adjoining part of the sheet on each side of the punch being slightly forced towards the inside of the profile.
  • the punch engaged inside the profile, after crossing the sheet in the corresponding face, is moved to the right or to the left by a determined distance, this transverse movement being authorized due to the more limited length of the piston compared to that of the punch.
  • the movement of the piston is reversed to produce a displacement of the punch from bottom to top, the upper lateral edges of the latter coming to cut the corresponding fraction of the sheet at the precise location of the small side. from the opening, the relatively limited area of this fraction vis-à-vis that of the chip carried during the descent of the tool, making it possible to obtain sharp lines, not only along this short side but also in the corresponding extension of the long sides of the 'final opening.
  • a fourth step the punch is again engaged by a downward movement of the piston inside the formed blank, then moved in the direction opposite to that adopted in the third step, the return from the bottom to the top of the punch under the control of the piston, carrying out, in the same manner as indicated above, the cutting of the corresponding fraction of the sheet and the formation of the second short side.
  • An opening is thus produced in one of the faces of the sheet which has a perfectly rectangular profile, without sinking or deformation of the remaining metal, facilitating for the reasons already specified, the subsequent mounting of an accessory and in particular of a shell handle or the like in the profile.
  • the cross section of the punch has, along its short sides, a profile consisting of two contiguous zones substantially in an arc towards the inside thereof, these zones being symmetrical to one another relative to the vertical median plane of the punch and meeting at a point in this plane, to form a longitudinal central edge located in this plane below the common level of the two lower lateral edges of the punch.
  • This particular structure of the lower surface of the punch allows an attack of the sheet in the upper face of the profile when the piston descends in the first aforementioned time, such that the chip produced has a slightly curved transverse profile, because of the force exerted in the middle part of this chip by this central edge, this deformation having the effect of slightly reducing the width of the chip and consequently preventing it from getting stuck inside the profile, between the side sails and the opposite sides thereof.
  • the upper transverse edges of the punch are inclined on the horizontal plane, so as to cut the sheet from one end to the other of the short sides of the opening during the return movement of the punch .
  • This particular shape of the cutting edges formed on the top of the punch, on each side of the control piston, has the advantage of being able to cut along the short sides of the opening the corresponding sheet metal fractions previously forced inwards, according to perfectly clear lines and corresponding to precise dimensions.
  • the fixed support comprises two vertical lateral guides, spaced from each other by the length of the punch along its long sides, against which the short sides of the latter slide during its downward and return movements, these guides forming support dies during the cutting of the sheet metal fractions when the punch is raised.
  • the difference in length between the punch and the piston is equal to the displacements of the profile in the open groove of the support, prior to the upward movement of the punch.
  • the fixed support comprises in its open groove receiving the profile, a movable stop, capable of being erased when the profile is engaged in this groove, this stop being able, however, to penetrate into a first opening made in one side of the profile after turning over the latter by 180 ° on itself and substitution of one of the other for its horizontal faces, so as to allow the position of the profile to be indexed relative to the first opening t to make a second opening in the opposite side, located exactly opposite the first.
  • the invention also relates to the method implemented by means of the punching tool considered, which consists in placing the profile in the open groove of the fixed support so that it has one of its horizontal faces opposite the punch. in the raised position, to control the descent of the punch vertically from top to bottom to form the blank of the opening in this face, with its long sides parallel to the parallel transverse webs of the profile, to move the profile laterally to the right or towards the left in a first direction, so that the corresponding lateral side of the blank of the opening comes to rest against the piston above the punch, to control the displacement of the punch from the bottom upwards to complete the cutout on the short side of the opening, to cause a new displacement from the top to the bottom of the punch, to move the profile laterally in the opposite direction of the pre mire and to order again the movement of the punch from bottom to top to complete the opening according to its small opposite side.
  • the reference 1 generally designates an elongated and continuous metal profile, of the kind of those commonly used in aluminum carpentry for making frames for doors, windows or the like.
  • Such a profile has, in itself known, a tubular structure, comprising two opposite parallel faces, respectively 2 and 3, braced by means of two equally parallel webs, respectively 4 and 5, extending perpendicular to the faces 2 and 3.
  • the latter extend beyond the sails 4 and 5 and comprise possibly grooved parts such as 6, 7 and 8, the detail of the latter not important to the present invention.
  • the sails 4 and 5 define with the opposite parallel faces 2 and 3 an internal housing 9, completely surrounded by these elements.
  • an opening 10 substantially in the middle part of this section, through one of the opposite parallel faces 2 or 3, it it is not practicable to introduce inside the profile, in particular into the housing 9, a structure forming a support matrix, against which a support tool can lean punching coming to cut in the sheet of the profile the opening 10, the latter being generally intended for mounting on the profile of an accessory and in particular of a shell of a handle or of a lock, to be attached to the profile when this constitutes a part of the frame of a frame or door or window opening.
  • the punching tool according to the present invention makes it possible to avoid these drawbacks, by ensuring the production of one or even two openings 10 and 11 in the opposite faces 2 and 3 of the profile 1, which is simple to implement, allows precise cuts exactly to the desired dimensions and such that, when the profile must have two facing openings, these are strictly in correspondence and have entirely identical dimensions.
  • the openings 10 and 11 have a rectangular profile, this precise shape not however being completely limiting.
  • each opening has two large parallel sides, respectively 12 and 13, these sides extending in the longitudinal direction of the profile and preferably in the immediate vicinity, respectively of the parallel sails 4 and 5, perpendicular to the faces 2 and 3 of the profiled for the reasons explained below.
  • These openings 12 and 13 also have small transverse sides, respectively 14 and 15, perpendicular of course to the longitudinal sides 12 and 13, these transverse sides 14 and 15 therefore being perpendicular to the webs 4 and 5, their common dimension being substantially equal. at the distance between these sails.
  • FIG. 2 then in FIGS. 4 and 5 is more particularly illustrated the punching tool according to the invention, making it possible to make the openings 10 and 11 in the faces 2 and 3 of the profile, without using a matrix or anvil of back pressure arranged in the housing 9 in line with the areas where these openings must be made.
  • the tool mainly comprises a punch 16 the shape and implementation of which are specified below, this punch 16 being integral with a piston 17, itself fitted into a control block 18 allowing by means of a jack 19 or other to exert an effort on the punch 16, either from top to bottom in the vertical direction in the drawings, or vice versa from bottom to top.
  • the control unit 18 is guided in its movement by means of rods slidably mounted in bores 21 of a fixed support 22, which has a groove 23 open laterally and into which the profile 1 can be introduced beforehand. position such that it has its opposite faces 2 and 3 in horizontal parallel planes, perpendicular to the vertical direction of movement of the punch 16.
  • the fixed support 22 also comprises a retractable stop 24 which, in the example schematically illustrated in FIG. 2 comprises an arm 25 articulated around a horizontal axis, this stop being permanently subjected to the action of a spring of thrust 27, so that a ball-shaped projection 28 provided on the arm 25 can come to emerge in the groove 23 when the latter does not include the profile 1, conversely disappear outside of this groove when the profile pushes the stop by the horizontal face 3, in the position illustrated in FIG. 2.
  • a retractable stop 24 which, in the example schematically illustrated in FIG. 2 comprises an arm 25 articulated around a horizontal axis, this stop being permanently subjected to the action of a spring of thrust 27, so that a ball-shaped projection 28 provided on the arm 25 can come to emerge in the groove 23 when the latter does not include the profile 1, conversely disappear outside of this groove when the profile pushes the stop by the horizontal face 3, in the position illustrated in FIG. 2.
  • the stop 24 may in this case bring out the projection 28 of the arm 25 inside this opening 10, allowing in this case an indexing of the position of the profile vis-à-vis the punch and the piercing of its face 3 then opposite this punch, to obtain the second opening 11, the latter being produced in precise coincidence with the position of the first opening 10.
  • FIGS. 4 and 5 illustrate in more detail the profile of the punch 16.
  • the latter of generally parallelepiped shape, preferably comprises two longitudinal cutting edges, respectively 29 and 30, which extend parallel to the direction of the profile 1, these edges being joined in the lower part of the punch by two zones, respectively 31 and 32, in an arc of a circle, symmetrical with each other with respect to the median plane of the tool and which join to form a central edge 33, parallel to the longitudinal edges 29 and 30, but which, by construction, are at a level slightly lower in the vertical direction to the latter, that is to say made more protruding outward from the punch under this one.
  • the punch also comprises in its upper part two transverse edges, respectively 34 and 35, also sharp, these edges being preferably inclined on the horizontal plane, from one end to the other thereof.
  • the punch 16 is integral with the piston 17, these two parts preferably coming from manufacture, by machining or foundry, in one piece, or if necessary attached and fixed to each other by any suitable means.
  • the width of the punch 16 corresponds by construction to that of the openings 10 or 11 to be produced in the profile 1, and corresponds to that of the short sides 14 and 15 thereof.
  • the length of the punch is such that it is slightly less than that of the long sides 12 and 13 of these same openings.
  • the piston 17 in turn has a width which corresponds to that of the punch.
  • its length is again less than that of this punch, as clearly illustrated in Figure 4, the difference in the lengths of these two parts of the punching tool being determined so that this difference, added to the length of the punch on either side of its lateral ends, leads to an overall dimension which corresponds to that of the long sides 12 and 13 of the openings 10 or 11.
  • the reference 36 represents the metal chip created in the surface 2 (or 3) of the profile 1 by an up and down movement of the piston 17 and of driving in the punch 16 piercing and crossing this surface, this chip is collecting in the bottom of the housing 9, from which it can be subsequently extracted, thanks in particular to its slight reduction in width with respect to the distance which separates the long sides 12 and 13 from the blank of the opening 10 or 11 produced, caused by the particular shape of the underside of this punch and in particular of the relative arrangement of the edges 30 and 31 on the one hand, 33 on the other hand, the chip 36 bending slightly on itself during of its creation and its separation from the metal sheet from which it comes.
  • the section 1 is assumed to be engaged in the open groove of the fixed support with its opposite parallel faces, 2 and 3 respectively, arranged in horizontal planes.
  • the punch 16 carried by the piston 17 is above the profile 1, which is positioned under the punch 16 in line with the first opening 10 to be produced in its upper face 2.
  • the punch 16 is then driven in a vertical movement from top to bottom, so as to come to attack the surface 2 of the profile 1 and carry out therein the roughing of the opening 10.
  • the punch 16 crosses the upper surface 2, and causes therein the abovementioned opening blank, the downward movement of the punch advantageously being effected by sliding the end edges thereof between two lateral guides, respectively 37 and 38, carried by the fixed support 22 ..
  • FIG. 3c illustrates the position of the punch 16 at the end of the descent stroke of the piston 17, after the chip 36 has fallen produced inside the housing 9 in the profile 1.
  • the movement of the punch 16 is shown diagrammatically in these Figures by the arrow 41.
  • the piston 17 maintains the punch 16 inside the housing 9 in the profile 1, the latter being subjected to a lateral displacement force, in the example illustrated towards the left of the drawing as shown by arrow 42.
  • the sheet metal fraction 40 situated to the right of the opening blank 10 obtained previously moves relatively relative to the punch 16, until it comes to abut against the corresponding side 43 of the piston 17.
  • the section 1 is designed to have two openings, respectively 10 and 11, placed strictly opposite one another in the opposite faces 2 and 3, it suffices to turn the section 180 ° on itself- even and to introduce it again into the open groove 23 of the fixed support 22, the movable stop 24 then projecting inside the housing 9 through the opening 10 under the effect of its spring 27.
  • the stop 24 thus constitutes an anchor point for the profile 1, making it possible to position it exactly opposite the punch.
  • the latter can then carry out the second opening 11, as illustrated in FIGS. 3g, 3h and 3i, which respectively take up the arrangements already described with regard to the formation of the first opening 10, in relation to FIGS. 3b, 3rd and 3f.
  • FIG. 5 shows on a larger scale the fraction of sheet metal 39 sectioned on the left side of the openings 10 and 11 by the return movement of the punch 16.
  • the tool considered thus makes it possible to carry out all the operations necessary on a single punching station, with a final cutting with regular edges, the initial chip and the complementary fractions of sheet metal, eliminated respectively at the descent then at the ascent of the punch, being able to be easily evacuated, either due to their narrowing in width, or their withdrawal towards the outside of the profile.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Punching Or Piercing (AREA)
EP19950400309 1994-03-08 1995-02-14 Stanzvorrichtung metallischer Profile Expired - Lifetime EP0672479B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9402664 1994-03-08
FR9402664A FR2717111B1 (fr) 1994-03-08 1994-03-08 Outil de poinçonnage pour profilés métalliques.

Publications (2)

Publication Number Publication Date
EP0672479A1 true EP0672479A1 (de) 1995-09-20
EP0672479B1 EP0672479B1 (de) 1997-12-10

Family

ID=9460806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950400309 Expired - Lifetime EP0672479B1 (de) 1994-03-08 1995-02-14 Stanzvorrichtung metallischer Profile

Country Status (6)

Country Link
EP (1) EP0672479B1 (de)
DE (1) DE69501168T2 (de)
ES (1) ES2113157T3 (de)
FR (1) FR2717111B1 (de)
GR (1) GR3026080T3 (de)
MA (1) MA23468A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793428A1 (fr) * 1999-05-13 2000-11-17 Panifer S A Matrice d'estampage pour l'usinage d'orifices dans des profiles tubulaires
GR1003476B (el) * 1999-10-18 2000-12-29 / Χαντρωμα προφιλ αλουμινιου με πρεσσα
ITBO20110254A1 (it) * 2011-05-06 2012-11-07 Tecnomec Di Conoscitore Francesco Apparecchiatura per la realizzazione di aperture in un profilato per serramenti
EP2786815A1 (de) * 2013-04-04 2014-10-08 Benteler Automobiltechnik GmbH Verfahren und Vorrichtung zur Herstellung eines Energieabsorptionsprofils für ein Kraftfahrzeug

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117226172B (zh) * 2023-11-14 2024-02-23 江苏宇马铝业有限公司 一种铝合金型材切割用定位装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365693A1 (de) * 1973-07-23 1976-01-02 Schuermann & Co Heinz Stanzwerkzeug fuer hohlprofile
DE8502329U1 (de) * 1985-01-30 1985-05-15 Heine, Franz, 7992 Tettnang Stanzvorrichtung
FR2644202A1 (fr) * 1989-03-09 1990-09-14 Rutigliano Richard Dispositif d'usinage pour l'assemblage de profils aluminium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365693A1 (de) * 1973-07-23 1976-01-02 Schuermann & Co Heinz Stanzwerkzeug fuer hohlprofile
DE8502329U1 (de) * 1985-01-30 1985-05-15 Heine, Franz, 7992 Tettnang Stanzvorrichtung
FR2644202A1 (fr) * 1989-03-09 1990-09-14 Rutigliano Richard Dispositif d'usinage pour l'assemblage de profils aluminium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793428A1 (fr) * 1999-05-13 2000-11-17 Panifer S A Matrice d'estampage pour l'usinage d'orifices dans des profiles tubulaires
GR1003476B (el) * 1999-10-18 2000-12-29 / Χαντρωμα προφιλ αλουμινιου με πρεσσα
ITBO20110254A1 (it) * 2011-05-06 2012-11-07 Tecnomec Di Conoscitore Francesco Apparecchiatura per la realizzazione di aperture in un profilato per serramenti
EP2786815A1 (de) * 2013-04-04 2014-10-08 Benteler Automobiltechnik GmbH Verfahren und Vorrichtung zur Herstellung eines Energieabsorptionsprofils für ein Kraftfahrzeug
EP2786815B1 (de) 2013-04-04 2015-03-25 Benteler Automobiltechnik GmbH Verfahren und Vorrichtung zur Herstellung eines Energieabsorptionsprofils für ein Kraftfahrzeug
US9676113B2 (en) 2013-04-04 2017-06-13 Benteler Automobiltechnik Gmbh Method and device for producing an energy-absorbing profile for a motor vehicle

Also Published As

Publication number Publication date
ES2113157T3 (es) 1998-04-16
DE69501168T2 (de) 1998-06-18
DE69501168D1 (de) 1998-01-22
FR2717111B1 (fr) 1997-01-17
GR3026080T3 (en) 1998-05-29
MA23468A1 (fr) 1995-10-01
FR2717111A1 (fr) 1995-09-15
EP0672479B1 (de) 1997-12-10

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