EP0268534A1 - Matrize für Presswerkzeug zum Führen und Positionieren eines Profils für einen Stanzvorgang - Google Patents

Matrize für Presswerkzeug zum Führen und Positionieren eines Profils für einen Stanzvorgang Download PDF

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Publication number
EP0268534A1
EP0268534A1 EP87402603A EP87402603A EP0268534A1 EP 0268534 A1 EP0268534 A1 EP 0268534A1 EP 87402603 A EP87402603 A EP 87402603A EP 87402603 A EP87402603 A EP 87402603A EP 0268534 A1 EP0268534 A1 EP 0268534A1
Authority
EP
European Patent Office
Prior art keywords
section
guide
stirrup
bar
guide element
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
EP87402603A
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English (en)
French (fr)
Other versions
EP0268534B1 (de
Inventor
Robert Clauzet
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
Technal 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 Technal SA filed Critical Technal SA
Publication of EP0268534A1 publication Critical patent/EP0268534A1/de
Application granted granted Critical
Publication of EP0268534B1 publication Critical patent/EP0268534B1/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

Definitions

  • the invention relates to a matrix allowing the guiding and positioning of a profile for its punching by a tool, in particular a press, provided with at least one movable punch.
  • the dies with which press tools are currently fitted have a single guide section.
  • the technique traditionally used to modify this guide section consists in using removable forks of different widths which are positioned on this matrix. These forks are positioned by means of grooves formed on two parallel faces of the matrix, their maintenance being ensured by pinching these two faces.
  • This method of fixing the forks has a first drawback relating to the difficulty of controlling the clamping forces.
  • this technique requires having several forks of different widths, adapted to the desired guide dimensions. To make a change of section, it is therefore necessary to carry out disassembly and reassembly operations of these forks. These different manipulations can be the source of errors in the choice of forks; moreover, these can be easily lost in a manufacturing workshop.
  • a final drawback of this technique resides in the fact that the abutment of the various profiles guided by the matrix is fixed whatever the guide dimension.
  • the present invention proposes to remedy the aforementioned drawbacks of the methods used to modify the guide dimension of a matrix.
  • the essential objective of the invention is to provide a matrix having at least two guide sections, to each of which is associated a specific stop, this matrix not requiring, in addition, the disassembly or assembly of any element when changing dimension.
  • Another object is to provide a die with an adjustable position stop for one of the guide sections.
  • Another objective is to provide a matrix with good resistance, allowing guide sections of small dimensions.
  • Another objective is to allow evacuation of the chips, whatever the orientation of the matrix.
  • the die will be described in its normal mounting position on a tool, the term “before” being used to define the side of the die where the profile is engaged.
  • the terms “height” and “width” correspond respectively to dimensions perpendicular and parallel to the direction of movement of the punches of the tool).
  • the invention relates to a matrix for guiding and positioning a profile, with a view to punching this profile by a tool, in particular a press, provided with at least one movable punch.
  • this matrix is characterized in that it comprises: a guide element of elongated shape, having a predetermined guide section, said guide element comprising engagement lights of the end of each punch, means for fixing the guide element to the tool, - A guide bracket carried by the guide element and having a guide section greater than the section of said guide element, said bracket comprising an end capable of acting as a stop for a profile engaged on the guide element and being adapted to slide longitudinally on said guide element between two positions: .
  • the guide element consists of a bar having a uniform guide section over the length which is released in the retracted position of the stirrup.
  • This matrix therefore presents two sections of guidance, the section change being simply obtained after sliding of the caliper between its advanced and retracted positions and requiring no disassembly.
  • the end of the stirrup acting as a stop for a section of lower section the guide length of the bar can be adjusted as desired in order to vary the position of the punching.
  • the guide element comprises: - a buidling bar composed of two longitudinal sections having a different guide section, a so-called front section, of determined guide section and a section, said rear, of intermediate guide section between the guide section of the front section and the section caliper guide, - A movable member articulated on the rear section so as to be able to be oriented in a closed position where it forms with the front section an assembly extending the rear section, or in an open position where it releases the front section so as to allow guidance of a profile by the latter.
  • each guide dimension corresponds to a specific stop, the stop of a section of large section guided on the stirrup being conventionally formed on the matrix support so as to give this stirrup a guide length greater than the guide lengths. other elements.
  • the guide length of each element is therefore proportional to the dimension of this element.
  • the guide length of the intermediate section element can be adjusted at will by locking the stirrup in an intermediate position between its advanced and retracted positions.
  • the movable member is articulated around an axis of rotation orthogonal to the longitudinal axis of the guide bar, the matrix comprising means for positioning said movable member adapted to block it in rotation, on the one hand in its closed position and, on the other hand, in an open position where it is oriented in a direction substantially orthogonal to the longitudinal axis of the guide bar.
  • the two sections of the guide bar, and the stirrup are preferably arranged so as to have faces, capable of serving as a support for the fabric for punching profiles, positioned in the same plane.
  • the fabric of the profile is therefore in contact with the matrix over its entire length, regardless of the guide section.
  • the engagement apertures of each punch are formed transversely in the front section of the guide bar so as to pass right through it.
  • the movable member is provided, facing these lights, with a recessed part opening out at its lower face.
  • the stirrup is, for its part, provided with a lower wing provided with a lumen arranged so as to be opposite the recessed part of the movable member in the advanced position of said stirrup.
  • the front section of the guide bar, the guide element constituted by the rear section of the guide bar and by the front section and movable member assembly, and the stirrup have a constant height determined as a function of the height of the cages of the profiles to be punched and a width equal, at least over a given length of these elements, to the width of said profile cages.
  • the invention relates to dies 1, 2 intended to be mounted, cantilevered, on a tool provided with a movement transformation system, as described in the patent application filed, in the name of the applicant, together with this application.
  • These dies are adapted to present either two or three sections allowing the guiding of profiles of different dimensions, the changes of sections being carried out without any disassembly of elements of these dies.
  • FIGS. 1 to 4 show two alternative embodiments concerning either a matrix 1 which can have two different guide sections (FIGS. 1 to 4), or a matrix 2 which can have three different guide sections (FIGS. 5 to 10).
  • the matrix shown in Figures 1 to 4 comprises a guide bar 3 of generally rectangular parallelepiped shape.
  • This bar 3 is provided transversely with two horizontal holes 4, 5 passing right through it, inside which the end of a punch engages.
  • one of these slots 4 has a circular section and allows the end of a cylindrical punch to be engaged.
  • the second light 5 has, for its part, an oblong shape combined with a shape punch.
  • this bar 3 on the tool is ensured by a yoke 6 provided with two horizontal branches extending relative to one of the lateral faces of this bar, at its rear end.
  • This yoke covers the matrix support, the guide element 3 being held in place by a fixing screw 7 housed in a transverse bore 8 formed in this bar and opening into the bottom of the yoke 6.
  • This guide bar 3 also has a fixed stop member 9, having a general T shape.
  • This member 9 is fixed on the lateral face of the bar 3, opposite to the yoke 6, so that the cross member 9a of the T is positioned vertically and oriented towards the front end of the bar. In this position, this stop member 9 constitutes a fixed stop for the end of a straight cut profile.
  • the abutment member 9 also has a recess 10 formed in its lateral face opposite to the guide bar 3 and opening into the bore 8 of this bar. With a diameter greater than the diameter of the bore 8, this recess makes it possible to house the head of the fixing screw 7.
  • this cross member 9a of this stop member being located substantially opposite the engagement lumen 5 of the form punch, this cross member 9a has a width less than the width of the upright of the stop member 9, so to preserve a chip evacuation space between this crosspiece and the side face opposite the guide bar 3.
  • This matrix also includes a guide stirrup 11 adapted to guide a profile having a cage with a height greater than the height of the profile cages guided by the guide bar 3.
  • This stirrup 11 has two branches 12, 13 of elongated shape and likewise width than the guide bar 3, these branches being arranged so as to cover over a determined length the upper and lower faces of this bar 3.
  • Each of these branches 12, 13 comprises, towards its rear end, a portion 14, 15 of greater width suitable for covering respectively the upper and lower faces of the guide bar 3 and of the stop member 9.
  • the two branches 12, 13 are connected laterally at their rear portions 14, 15, by means of a transverse wall 16 bearing against the external face of the stop member 9.
  • This transverse wall 16 is, moreover, provided with a longitudinal slot 17 inside which a screw 18 screwed longitudinally can be screwed into a threaded bore formed in the external face of the stop member 9.
  • the free end of this screw 18, projecting laterally relative to the transverse wall 16, is provided with a knurled nut 19 making it possible to press and maintain this transverse wall 16 against the external face of the stop member 9.
  • the stirrup can be moved relative to the guide bar 3 between two extreme positions: - an advanced position where the front end portions 14, 15 of the branches of this stirrup abuts against the cross member 9a of the stop member 9, and where the branches 12, 13 cover the upper and lower faces of the guide bar 3, - a retracted position where the front end of these branches 12, 13 is substantially aligned with the front face of the cross member 9a of the stop member 9.
  • this stirrup can be locked in translation in any intermediate position between its advanced and retracted positions.
  • the guide length of the guide bar 3 can therefore be adjusted in order to punch the profile at a predetermined distance from its end.
  • these dies being generally used for guiding profiles cut in miter, the abutment of the end of these profiles must have a front face inclined at 45 degrees relative to the longitudinal axis of these dies.
  • the front end of the branches 12, 13 is inclined so as to act as a stop at the end of miter cut sections guided by the guide bar 3.
  • the front faces 6a of the branches of the yoke 6 are inclined at 45 ° relative to the axis of the matrix 1. These faces 6a are thus adapted to serve as a fixed stop for the end of a profile cut in tab engaged on the caliper 11.
  • This fixed stop is, moreover, increased by means of a stud 20 projecting from the front face of the cross member 9a of the stop member 9.
  • This stud 20 has, in effect, an inclined front face s aligning in the same vertical plane as the faces 6a of the yoke 6.
  • the front face 16a of the transverse wall 16 is itself inclined at 45 ° relative to the axis of the matrix. In this way, this face 16a is always set back relative to the surface 6a-20 acting as a stop for a profile engaged on the stirrup 11.
  • the matrix 2 shown in Figures 5 to 10 has, in turn, three guide elements 21, 22, 23 of different dimensions (width and height), these elements 21, 22, 23 being arranged so as to allow, as before, a change of section without any disassembly of a member of the matrix.
  • This matrix 2 makes it possible to pierce the profiles, of two holes spaced horizontally by a predetermined center distance, depending on the center distance of the punches mounted on the tool. It should be noted that the punching is identical for the different sections of profiles engaged on this die 2.
  • This die 2 comprises a first guide element 21 adapted to be fixed on the die support of the tool. To this end, it is provided with a housing 24 arranged towards its rear end, and opening at one of its lateral faces. This housing 24 is adapted to accommodate a lateral edge of conjugate shape, of the matrix support. The actual fixing is ensured by means of fixing screws 25 housed in transverse bores opening respectively in the housing 24 and at the level of the opposite lateral face of the guide element 21.
  • This guide element 21 comprises, firstly, a guide bar 23, 28 composed of two longitudinal sections of different guide section: a front section 23 of determined guide section and a front section 23. These two sections are, in furthermore, arranged so that the longitudinal end 32a of the rear section 28 acts as a stop for a section cut in miter, engaged on the front section 23.
  • the front section 23 therefore allows the guiding of a spun pro with a cage of small dimensions, the punching fabric of which comes to bear against one of its lateral faces.
  • This section 23 is, moreover, provided transversely with two horizontal holes 29, 30, passing right through it, and allowing the engagement of the end of a punch. In this case, these slots 29, 30 have a circular section allowing the end of cylindrical punches to be engaged.
  • the guide element 21 also comprises a movable member 27 articulated on the rear section 28 so to be able to be oriented in two positions: a closed position where this member forms with the front section 23, an assembly extending the rear section 28 and having the same guide section as this rear section, - An open position where it is arranged at 90 degrees relative to the longitudinal axis of the guide bar so as to release the front section 23 and to allow the guiding of a profile by the latter.
  • the axis of rotation 31 of this movable member 27 is positioned at an extension 32 of the rear section 28, delimited by two transverse shoulders 33 formed at the upper and lower faces of this section 28.
  • the rear longidudinal end of this movable member has the shape of a yoke 34 inside which is housed the extension 32, the axis of rotation 31 connecting the wings of this yoke.
  • the shoulders 33 formed at the upper and lower faces of the rear section 28 have a height suitable for the guide element 21 to have a constant height over its entire guide length, length obtained in the closed position. of the movable member 27.
  • the axis of rotation 31 is not positioned at a weak resistance section, such as the embedding zone of the front section 23, but at the level of the extension 32 having sufficient dimensions to be only slightly weakened by the removal of material resulting from the presence of this axis.
  • the end of the extension 32 housed inside the yoke 34 of the movable member 27 also has a substantially rounded shape, against which the end of a positioning finger 35 integrated in a longitudinal housing 36 formed inside the movable member 27.
  • the end of this positioning finger 35 kept under pressure on the aforementioned end of the extension 32 by means of a spring 37, is housed , in each of the open and closed positions of the movable member 27, in a notch 38 ensuring perfect indexing in position of this movable member.
  • the movable member 27 has a lateral face having the shape of a yoke 39 of dimensions adapted to accommodate the front section 23, in the closed position of this movable member 27.
  • the front section 23 is provided, facing the bottom of the yoke 39, recesses such as 40 inside which open the engagement lights 29-30 of the punches.
  • the lower wing of the yoke 39 is provided with a cutout 41 ensuring the fall by gravity of the chips.
  • this face 42 of this movable member is provided inclined so as to define an angle of 45 degrees relative to the axis of the matrix.
  • this face 42 is always set back with respect to the stop of a profile engaged on the front section 23.
  • the movable member 27 has, towards its front end, a width, greater than its current width and combined with the predetermined dimensions of the cage of the profiles to be punched.
  • This increase in secti on is achieved by means of two wings 53 extending, over a given length of the movable member 27, the upper and lower faces of the latter.
  • This matrix finally comprises a guide stirrup 22, of greater cross section than the other two guide elements.
  • This bracket has the shape of a U whose wings 43, 44 are arranged parallel to the upper and lower faces of the guide bar and whose length is adapted to overlap this guide bar over a length substantially equivalent to the guide length of the latter.
  • the two wings 43, 44 of this stirrup 22 are connected by means of a side wall 45 coming to bear against the side face of the guide bar opposite the matrix support.
  • This side wall 45 is, moreover, provided with a longitudinal slot 46 inside which a screw 47 screwed longitudinally can be slid into a threaded bore formed in the side face of the guide bar.
  • the free end of this screw 47, projecting laterally with respect to the side wall 45, is provided with a knurled nut 48 making it possible to press and hold this wall 45 against the abovementioned lateral face of the guide bar.
  • this stirrup 22 can be moved longitudinally, relative to the guide element 21 between an advanced position where the wings 43, 44 are superimposed on the upper and lower faces of the guide bar, over a length determined from the front end of this bar and a retracted position where the guide bar is released over a length equivalent to its guide length. Furthermore, this stirrup 22 can be locked in any intermediate position between its advanced and retracted positions.
  • the lower wing 44 of the latter is provided with a slot 54 of oblong shape arranged so as to be opposite the cutout 41 of the movable member 27 in the advanced position of this stirrup.
  • the stirrup 22 is guided by means of a longitudinal rib 49 extending on a lateral face of the guide bar, opposite a longitudinal groove 50 of conjugate shape, formed in the lateral wall 45 of the stirrup.
  • a longitudinal rib 49 extending on a lateral face of the guide bar, opposite a longitudinal groove 50 of conjugate shape, formed in the lateral wall 45 of the stirrup.
  • a longitudinal groove 50 of conjugate shape formed in the lateral wall 45 of the stirrup.
  • in order to allow movement of the stirrup 22 to an advanced position where it covers the front end of the side wall 45 of this stirrup has two longitudinal grooves 51, inside which the wings 53 are housed defining the section of the guide element 21.
  • the front face of the wings 43, 44 of the stirrup is inclined by 45 degrees with respect to the axis of the matrix, so as to serve as a stop at the end of profiles cut in miter guided by the guide element 21.
  • the stop of a profile guided by the stirrup 22 is, in turn, co-located by a shoulder 52 formed on the matrix support.
  • This matrix 2 therefore has three guide sections to which correspond specific stop positions, the position of the stop of an intermediate section profile being additionally adjustable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
EP19870402603 1986-11-19 1987-11-18 Matrize für Presswerkzeug zum Führen und Positionieren eines Profils für einen Stanzvorgang Expired - Lifetime EP0268534B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8616427A FR2606685B1 (fr) 1986-11-19 1986-11-19 Matrice pour outil de presse, permettant le guidage et le positionnement d'un profile en vue de son poinconnage
FR8616427 1986-11-19

Publications (2)

Publication Number Publication Date
EP0268534A1 true EP0268534A1 (de) 1988-05-25
EP0268534B1 EP0268534B1 (de) 1991-10-16

Family

ID=9341200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870402603 Expired - Lifetime EP0268534B1 (de) 1986-11-19 1987-11-18 Matrize für Presswerkzeug zum Führen und Positionieren eines Profils für einen Stanzvorgang

Country Status (6)

Country Link
EP (1) EP0268534B1 (de)
DE (1) DE3773846D1 (de)
ES (1) ES2025684T3 (de)
FR (1) FR2606685B1 (de)
GR (1) GR3002907T3 (de)
PT (1) PT86159B (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2252881A1 (en) * 1973-11-29 1975-06-27 Whitney Italia Clamping arrgmt. for elongated workpieces - uses hydraulic cylinder for clamping through angled plunger during hole boring
DE2455122A1 (de) * 1974-11-21 1976-08-12 Loth Hermann Vorrichtung zum ausklinken von stegen an profilen mittels eines stanzwerkzeugs
FR2310868A1 (fr) * 1975-05-12 1976-12-10 Yoshida Kogyo Kk Presse portative

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2252881A1 (en) * 1973-11-29 1975-06-27 Whitney Italia Clamping arrgmt. for elongated workpieces - uses hydraulic cylinder for clamping through angled plunger during hole boring
DE2455122A1 (de) * 1974-11-21 1976-08-12 Loth Hermann Vorrichtung zum ausklinken von stegen an profilen mittels eines stanzwerkzeugs
FR2310868A1 (fr) * 1975-05-12 1976-12-10 Yoshida Kogyo Kk Presse portative

Also Published As

Publication number Publication date
FR2606685A1 (fr) 1988-05-20
DE3773846D1 (de) 1991-11-21
ES2025684T3 (es) 1992-04-01
PT86159B (pt) 1993-08-31
EP0268534B1 (de) 1991-10-16
GR3002907T3 (en) 1993-01-25
PT86159A (pt) 1988-12-15
FR2606685B1 (fr) 1989-02-17

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