EP0272175A1 - Presswerkzeug zum Verstellen der Stanzwerkzeuge in eine abweichende Richtung der Arbeitsrichtung der Presse - Google Patents

Presswerkzeug zum Verstellen der Stanzwerkzeuge in eine abweichende Richtung der Arbeitsrichtung der Presse Download PDF

Info

Publication number: EP0272175A1
Authority: EP; European Patent Office
Prior art keywords: punch; tool; slide; punch holder; tool according
Prior art date: 1986-11-19
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

EP87402602A

Other languages

English (en)

French (fr)

Other versions

EP0272175B1 (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.)

1986-11-19

Filing date

1987-11-18

Publication date

1988-06-22

1987-11-18 Application filed by Technal SA filed Critical Technal SA

1988-06-22 Publication of EP0272175A1 publication Critical patent/EP0272175A1/de

1991-05-08 Application granted granted Critical

1991-05-08 Publication of EP0272175B1 publication Critical patent/EP0272175B1/de

2007-11-18 Anticipated expiration legal-status Critical

Status 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
- B21D28/32—Perforating, i.e. punching holes in other articles of special shape

Definitions

the invention relates to a tool provided with at least one die and at least one punch, intended to be mounted on a machine, such as a press comprising an assembly table and a slide movable relative to this assembly table. , this tool making it possible to move each punch in a determined working direction, different from the working direction of the slide.
the traditional tools currently used on presses are designed to obtain a displacement of the punches in a single direction, identical to that of the slide.
This type of tool has many drawbacks, in particular when they are used for punching profiles in the field of aluminum carpentry.
the distance between the base of the slide and the mounting table limits the size of the profiles that can be punched.
the solution consisting in carrying out the punching in overhang, with respect to the assembly table is also unsatisfactory because of the forces to which the tool is subjected, which are hardly compatible with the very high precision required.
this type of tool does not allow punching of profiles of complex configuration endowed with cavities of difficult access.
due to the configuration of the profile it is sometimes impossible to evacuate the chips along a vertical axis. During the production of several punchings along the same profile, these chips therefore accumulate and can cause a deterioration of this profile and the blocking of the tool. To avoid this accumulation, it is then necessary to remove the profile to evacuate the chip, after each punching operation.
a first technique consists in carrying out the change of direction by means of a cam.
the applications of this method are however relatively limited, since the integration of cams results in significant power losses.
the only possibility offered to reduce these losses of power consisting in limiting the stroke of the punches it is understood that it is difficult to find a satisfactory compromise between power of the tool and stroke of the punch, and that the applications of this technique are, therefore, very small.
a second method derived from the previous one, consists in guiding the punch holders along an inclined plane.
this method can only be applied, however, when the required punching direction is only slightly inclined relative to the direction of movement of the slide. Furthermore, the friction forces exerted between the guide and the punch holder cause a significant loss of power.
the various techniques adopted for transforming the direction of movement of the slide have the disadvantage of not allowing, unlike traditional tools with a single direction of movement, a selection of punches located on different workstations, from a centralized selection body.
the selection member is necessarily positioned, either after the transformation of movement in the case of the first two techniques, or integrated on each tool block in the case of the third technique.
this centralized selection is of particular importance during, in particular, the manufacture of a series of chassis.
These frames are, in fact, generally obtained by assembling, by means of brackets, profiles cut obliquely at their end. The same type of brackets being used for the manufacture of a series of frames, the selection of punches must be identical on all workstations. The multiplication of selection bodies can therefore constitute a significant source of error.
Another problem encountered during the design of tools having a movement transformation mechanism lies in the difficulty of developing a system for attaching the punches, in particular making it possible to change a punch without having to dismantle the mechanism. This difficulty is further increased by the fact that the grooves or fins of the profiles generally leave very little space between the die and the support of the punches, to accommodate the latter.
the conventional solution used to hang the punches consists in using a removable support plate fixed on the punch holder, on the die side, and inside which the end of the punches, opposite the cutting part, is held captive.
the punches are maintained either by means of a screw, accessible from the face of the punch holder opposite to the die, or by means of a punch head held captive in the support. In the latter case, the support fixing screws on the punch holder are accessible on the die side.
this method requires on the one hand, a removable punch support and, on the other hand, sufficient space to allow the implantation of the screws. These requirements therefore do not make it possible to solve the problems mentioned above.
Another method consists in guiding the punch into a blind hole made in the base of the punch holder. Blocking the punch can then be achieved in two ways.
the first solution consists in using a pressure screw screwed into an inclined tapped hole, formed in a lateral face of the punch holder, this screw coming into abutment in a groove provided with an inclined bottom formed on the external face of the punch.
This solution therefore makes it possible to solve the problems mentioned above.
this method does not guarantee a precise orientation of the punch.
this blocking mode does not allow a floating mounting of the punch, which would ensure better self-centering of the latter relative to the die.
the second solution consists in using a stopper plate housed in a slot extending between the blind hole and a side face of the punch holder, and coming to be housed in a loaf formed on the body of the punch.
the holding of this plate is itself ensured by a fixing screw screwed into a tapped hole formed in the face of the punch holder located opposite the die.
this solution therefore comes up against problems relating to the small space available to allow the implantation of this screw.
this principle is not applicable to punches of small section because of the presence of the groove which results in a weakening of the resistance of these punches.
the present invention proposes to provide a press tool making it possible to move the punches in a direction different from the working direction of this press, this tool eliminating all the drawbacks mentioned above.
the essential objective of the invention is to provide a tool, in one piece, capable of being mounted on a conventional press, and having a movement transformation system making it possible to work in any direction relative to to the working direction of the press, without causing power losses during the transmission of the initial force of this press.
Another objective is to provide a tool provided with several work stations each carrying one or more punches whose directions of movement are independent with respect to each other.
Another objective is to provide a tool of reduced dimensions integrating a movement transformation system of small bulk.
Another objective is to provide a tool provided with a centralized selection device for the various punches.
Another objective is to provide a tool provided with a punch attachment system allowing assembly and disassembly of these punches from the die side face of the punch holders, and having no raised portion relative to the base of these punch holders.
Another objective is to provide a tool provided with punch holders of small section and authorizing a floating mounting of one or more punches, the attachment system of these punches further authorizing a rigorous orientation of the punches.
the tool will be described in its normal mounting position on a press, the terms “upper”, “lower”, “front”, “lateral” being used to define the faces of this tool seen by a person in front of this press.
the term “punch” is used in its broad sense, and designates a tool capable of carrying out stamping, cutting, stamping, stamping operations, etc.).
the tool targeted by the invention, is of the type comprising at least one die and one punch, and is intended to be mounted on a machine, such as in particular a press, provided with an assembly table and a slide movable relative to said mounting table; this tool is adapted to allow each punch to be moved in a determined direction, different from the direction of movement of the slide.
this tool is characterized in that it comprises in combination: - a pusher assembly adapted to be fixed on the slide, a body provided with means for guiding the pusher assembly and adapted to be fixed on the assembly table, - at least one workstation carried by the body and comprising a die, at least one punch holder movable relative to said die and means for guiding each punch holder oriented in a determined direction, different from the direction of movement of the pusher assembly, - Associated with each punch holder, a deflection device connecting said punch holder to the pusher assembly, and adapted to generate a displacement, in both directions, of said punch holder along its guide means during the actuation of the slide.
This tool in one piece, therefore, is both the push-button assembly intended to transmit the force of the slide, the workstation or workstations, and the movement transformation device.
the guide means of each punch holder are independent of each other and the movement of these punch holders is generated by deflection devices, themselves independent of each other. It is therefore easily understood that each punch holder, and in particular the punch holders of the same work station, can be moved in determined directions, different from one punch holder to another.
the determination of the angle of inclination between the direction of movement of the slide of the machine and the longitudinal axis of the guide housings of these punch holders will be determined according to the size of the profiles and will be adapted to allow the '' cutter evacuation after punching.
This possibility of adapting the working angle of the punches as a function of the shape of the profiles therefore makes it possible to solve the problems mentioned above, by means of a compact tool able to be mounted on a conventional press equipped with 'a slide movable in a direction orthogonal to the assembly table.
the inclination of the work stations can be adapted to the required working conditions, the pusher assembly is also preferably fixed on the slider so as to be driven in a direction parallel to the direction of movement of this slider.
each return device comprises an articulated rocker about an axis of rotation carried by the body, said rocker being connected respectively to the pusher assembly and to a punch holder, so as to be driven in rotation during movement of said pusher assembly and to generate a displacement of the corresponding punch holder along its guide means.
each rocker comprises two openings respectively arranged opposite the pusher assembly and a punch holder.
the push-button assembly and each punch holder are, for their part, provided with guide pins housed in the aforementioned slots, said guide pins being of shapes suitable for being guided along a rectilinear path inside said slots, during a rotation of the rocker.
the initial force of the slide is transferred entirely to the punch holder, without loss of power, by the effect of a simple rotation of the rocker.
the rocker of small dimensions, can be housed in a reduced location and does not cause the tool to be oversized. This latter consideration makes it preferable to choose a rocker in relation, in particular, to a deflection device using a pinion system. Indeed, due to the reduced size, the teeth of these pinions would be too small and would have too low a resistance.
the pusher assembly consists of an attachment member able to be fixed to the slide, and under which extend a plurality of pistons, each connected to a punch holder by means the corresponding return device.
This attachment member is also preferably made up of two parts, lower and upper, which can be dismantled, adapted to keep pinched, in their assembled position, the upper end of the pistons provided, for this purpose, with a section head. greater than the body of these pistons.
the tool comprises at least two work stations each provided with at least two punch holders
the latter is advantageously provided with a selection member centralized allowing to choose the punch or punches of each workstation activated during a displacement of the slide.
the upper part of the attachment member comprises, opposite at least two piston heads each connected to a punch holder of a different work station, a transverse groove of conjugate shape of said piston heads.
the selection member is, for its part, provided with registers of shapes adapted to be housed in each aforementioned groove, said member being movable between an active position where each register is housed in a groove and a passive position where each register is removed. said grooves.
This centralized selection member therefore makes it possible to eliminate any source of errors, in the selection of the punches used, in particular during the manufacture of a series of frames, requiring the same type of brackets for the assembly of profiles, cut in tab. This centralized selection is also necessary during straight section assemblies, depending on the configuration of the profiles.
the work stations are also provided with removable dies mounted on a die support.
the means for guiding the punch holders are, for their part, preferably made up of housings of conjugate shape of these punch holders, and opening out in line with a lateral face of the die support, facing said die.
the punches mounted on the end of these punch holders are therefore accessible, on the die side, after dismantling the latter and therefore do not require, when they are changed, dismantling of the mechanism.
each punch holder preferably has the shape of at least one yoke, each of these yokes having two opposite transverse grooves, each formed in a wing of said yoke, at a distance from the end said wings.
Each punch is in turn provided with a shaped collar adapted to be housed in a removable manner in the grooves of an aforementioned yoke.
This punch attachment system therefore makes it possible to assemble them on small punch holders. section, therefore of reduced bulk; it also allows the use of punches, the section of which can be identical to the section of these punch holders.
the punch holders are not provided with any fixing member projecting from their external wall, and can therefore slide freely inside their guide housings.
this mode of attachment of the punches allows the attachment of one or more punches on the same punch holder.
each punch is provided with a centering tail of shape adapted to be housed in a blind hole opening into the bottom of the yoke of each punch holder.
the flange of each punch has an elongated asymmetrical shape, adapted to allow its rotation between a working position where the flange is engaged in the screed grooves, and a disassembled position where said flange is oriented so that it can slide between the wings of said yoke; the tool further comprises a locking member capable of holding said flange in its working position.
the blind hole in the bottom of the clevis of the punch holder ensures centering of the punch, the release of the latter being allowed by the asymmetrical shape of the collar.
the punch can be advantageously mounted floating, on the one hand by providing a centering tail of section slightly smaller than that of the blind hole and, on the other hand by providing a small clearance between the member. lock and collar. The self-centering of the punch relative to the die is thus improved.
FIGS. 1 and 2 to 7 The tools shown respectively in Figures 1 and 2 to 7 are intended to be mounted on a press as described in particular in French patent application No. 85.01260.
This press comprises an assembly table 1 and a slide 2 movable, in an orthogonal direction, relative to this table (these two elements are shown diagrammatically in broken lines in FIGS. 1 and 2).
the mounting table 1 has a groove 3 with a rectified side face, and clamping fingers 4 ensuring the locking of the tool on this table.
the slider 2 has, meanwhile, facing the mounting table, a groove 5 and tightening tie rods 6 ensuring the maintenance of the tool on this slide.
Each tool consists of three essential parts: a body 7 adapted to be fixed on the assembly table, a pusher assembly 8, 9, 10 adapted to be fixed on the slide, and movable relative to the body 7, in a direction orthogonal to the assembly table 1, and two work stations 11, 12 carried by the body 7, on either side of the pusher assembly 8, 9, 10, each of the work stations comprising two punch holders .
the body 7 is provided with a stud 13 projecting from its underside.
This tenon 13, of conjugate shape of the groove 3 of the table 1 has a rectified lateral face intended to come into abutment against the rectified face of this groove 3.
the opposite lateral face of the tenon 13 is provided with a groove 14 in shape of half dovetail, conjugate with the end of the clamping fingers 4.
the pusher assembly has a fastening member 8, 9 on the slide 2, provided with a lug 15 of shape conjugate of the groove 5 of this slide.
the upper face of this tenon 15 further comprises two tapped bores 16 with a conjugate diameter of the threaded end of the tightening rods 6 of the slide 2.
attachment member 8, 9 consists of two lower parts 9 and upper 8, removable, secured by means of fixing screws 17. Under this attachment member extend four pistons 10, of general shapes cylindrical, aligned in the longitudinal plane of symmetry of the tool.
pistons 10 are provided with a head 18, of diameter greater than the piston body, kept pinched between the lower 9 and upper 8 parts of the attachment member.
These housings 19 also open out at the level from the underside of the body 7, via a section 20 of section lower than the current section of these dwellings.
the pusher assembly is furthermore provided with a centralized selection member making it possible to select the number of pistons 10 actuated during the movement of the slider 2. In this case, this selection makes it possible to actuate during each movement of the slide 2, either two or four pistons.
the upper part 8 is provided, opposite the lower part 9, with two transverse grooves 21, separated by a rib 24 of a height suitable for profiling with the lower face of this upper part 8.
These two grooves 21 are arranged so as to allow, each, a vertical movement of a head 18 of piston 10, relative to the attachment member.
the rib 24 comes, as for it, to pinch the head 18 of the piston 10 positioned between the two aforementioned pistons.
the selection member 22, proper has the shape of a T, the upright 22a of which is positioned opposite the head of the piston 10 pinched by the rib 24.
this member 22 is provided with a longitudinal lumen 23 of width adapted to accommodate this rib 24.
the two wings 22b are, moreover, of shapes adapted to be housed in the grooves 21 during a transverse movement of this selection member 22 relative to the member d 'attached.
this selection member 22, guided by the rib 24, can be moved between two positions: - A passive position, where the two wings 22b of the selection member 22 are removed from the groove 21; in this case, only the piston 10 kept pinched between the lower 8 and upper 9 parts and the piston 10 located opposite the upright 22a are actuated during movement of the slider 2; - An active position where the two wings 22b of the selection member 22 are introduced into the grooves 21; in this case, the four pistons 10 are actuated during movement of the slider 2.
the front face 25 of the selection member and the opposite face of the heads 18 of the pistons 10 have a bevelled shape intended to facilitate the sliding of this member 22.
a spring plunger 26 keeps the selection member 22 in each of its positions.
the second member of the tool consists of two work stations 11, 12 fixed to the body 7 on either side of the pusher assembly 8, 9, 10, so as to allow, in particular, the guidance of the 'fastening member 8, 9.
Each of these work stations comprises a matrix support 27 on which is fixed, in a removable manner, a matrix represented diagrammatically at 28.
Each work station 11, 12 also comprises two punch holders 29, of generally cylindrical shapes, moving in guide housings 30 of conjugate shapes, opening on the one hand at a lateral face of a matrix support 27 and, on the other hand, substantially opposite a piston 10.
the guide housings 30 can thus be oriented so as to determine any angle with the direction press work.
Each of the rockers 31 has a V shape and is articulated around an axis of rotation 35, carried by the body 7 of the tool.
the angle determined by the branches 36, 37 of these rockers depends on the direction of movement of the punch holders 29.
these rockers have an L shape.
each of the branches 36, 37 of these rockers 31 have the shape of a yoke inside which is housed, either the end of a punch holder 29, or a section of the body of a piston 10.
the ends of the punch holders 29 have two flats.
the peripheral wall of the piston bodies 10 has two shoulders defining a section having two flats.
each punch holder 29 and the corresponding piston 10 being arranged so as to slide against one another during the actuation of the slider 2, one of the aforementioned respective flats of these punch and piston holders is extended by so as to determine a plane contact surface between these two elements.
rockers 31 and punch holder 29 or piston 10 The actual connection between rockers 31 and punch holder 29 or piston 10 is produced by means of guide pins 38, 39 passing through these punch holders and pistons and being housed in grooves 40, 41 formed at the level of the longitudinal end of each of the branches 36, 37 of the rocker 31.
the respective shapes of these guide pins 38, 39 and of these grooves 40, 41 are determined so that, during a rotation of the rocker 31 around its axis of rotation 35, each guide pin 38, 39 is guided rectilinearly in a groove 40, 41, causing the movement of the punch holder 29 along its guide means 30.
This movement transformation system of small size, therefore allows to make small tools.
the punch holder 29-rocker 31-piston 10 assemblies being independent of each other, it is easily possible to orient each guide housing 30 in a determined direction independent of the orientation of the neighboring guide housings.
the punches 42 carried by the punch holders 29 must be accessible on the die side 28, in order to allow their assembly or disassembly.
each guide housing 30 has an open face opening at the upper face of a die support 27.
the corresponding end of the punch holders 29 is, for its part, of a flat 43 so as to be flush with this upper face of the matrix support 27.
This end of the punch holders 29 has, moreover, the form of a yoke 44 each of the wings of which has, internally, a transverse groove 45, formed at a distance from the end of this yoke.
a blind hole 46 is formed in the bottom of this yoke 44.
Each punch 42 has, for its part, a centering tail 47 of a shape adapted to be housed in the abovementioned blind hole 46.
the locking in translation of these punches 42 is ensured by means of a flange 48 of a shape suitable for being received in the grooves 45 of the yoke 44 of the punch holders 29.
This flange 48 has, in addition, two flats, allowing its sliding between the wings of the yoke 44.
the punch 42 can either slide inside the yoke 44 during assembly or disassembly operations, or be blocked in translation after rotation of this quarter collar.
a sealing plate 49 is fixed on the upper face of the die support 27 so as to bear on the respective flats 43 of the punch holder and of the flange 42.
a floating mounting is also ensured by providing a slight clearance on the one hand between the centering tail 47 and the blind hole 46 and, on the other hand, between the closure plate 49 and the flange 42.
the tool is provided with a front die assembly 50-front punch 51 intended to cut, according to a determined cutting mode, the end of a profile.
This assembly is intended, in particular, to make a cut in a fabric of this profile, in order to allow the passage of the linkage of a window frame.
the front punch 51 fixed to the lower part 9 of the attachment member by means of a fixing screw 52, has a rectangular parallelepiped shape.
the lower end 53 of this front punch 51 has a width less than the width of the running part, and is guided in a guide housing 54 arranged, facing the body 7 of the tool, in the front die 50 fixed to this body 7 by means of a fixing screw 55.
this housing 54 has an inclined bottom 54a, opening at the bottom at an opening in one of the side faces of the front die 50. This latter arrangement makes it possible to evacuate, by gravity, the chips coming from the cutting.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Mounting, Exchange, And Manufacturing Of Dies (AREA)
Automatic Assembly (AREA)
Punching Or Piercing (AREA)
Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

EP19870402602 1986-11-19 1987-11-18 Presswerkzeug zum Verstellen der Stanzwerkzeuge in eine abweichende Richtung der Arbeitsrichtung der Presse Expired - Lifetime EP0272175B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR8616426A FR2606684B1 (fr)	1986-11-19	1986-11-19	Outil de presse permettant de deplacer les poincons suivant une direction differente de la direction de travail de la presse
FR8616426		1986-11-19

Publications (2)

Publication Number	Publication Date
EP0272175A1 true EP0272175A1 (de)	1988-06-22
EP0272175B1 EP0272175B1 (de)	1991-05-08

Family

ID=9341199

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP19870402602 Expired - Lifetime EP0272175B1 (de)	1986-11-19	1987-11-18	Presswerkzeug zum Verstellen der Stanzwerkzeuge in eine abweichende Richtung der Arbeitsrichtung der Presse

Country Status (6)

Country	Link
EP (1)	EP0272175B1 (de)
DE (1)	DE3769946D1 (de)
ES (1)	ES2022420B3 (de)
FR (1)	FR2606684B1 (de)
GR (1)	GR3001919T3 (de)
PT (1)	PT86158B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2657798A1 (fr) *	1990-02-02	1991-08-09	Technal Snc	Outil autonome, notamment pour percer ou decolleter des profiles metalliques.
WO2005028137A1 (de) *	2003-09-03	2005-03-31	Bayerische Motoren Werke Aktiengesellschaft	Keiltriebwerkzeug mit zueinander verstellbaren elementen zum schneidlosen formen eines blechwerkstückes in einer presse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2421864A (en) *	1945-09-04	1947-06-10	Boeing Aircraft Co	Angle punch unit
US3498167A (en) *	1968-02-19	1970-03-03	Walter P Hill Inc	Automatic precision numerical controlled punching and shearing machine
DE3025552A1 (de) *	1980-07-05	1982-01-21	Daimler-Benz Ag, 7000 Stuttgart	Lochstanzvorrichtung in betriebsmitteln
US4468995A (en) *	1982-01-11	1984-09-04	Cuprum, S.A.	Apparatus for manufacturing frames from aluminum profile rails

1986
- 1986-11-19 FR FR8616426A patent/FR2606684B1/fr not_active Expired
1987
- 1987-11-18 EP EP19870402602 patent/EP0272175B1/de not_active Expired - Lifetime
- 1987-11-18 DE DE8787402602T patent/DE3769946D1/de not_active Expired - Lifetime
- 1987-11-18 ES ES87402602T patent/ES2022420B3/es not_active Expired - Lifetime
- 1987-11-18 PT PT8615887A patent/PT86158B/pt not_active IP Right Cessation
1991
- 1991-05-09 GR GR91400341T patent/GR3001919T3/el unknown

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2421864A (en) *	1945-09-04	1947-06-10	Boeing Aircraft Co	Angle punch unit
US3498167A (en) *	1968-02-19	1970-03-03	Walter P Hill Inc	Automatic precision numerical controlled punching and shearing machine
DE3025552A1 (de) *	1980-07-05	1982-01-21	Daimler-Benz Ag, 7000 Stuttgart	Lochstanzvorrichtung in betriebsmitteln
US4468995A (en) *	1982-01-11	1984-09-04	Cuprum, S.A.	Apparatus for manufacturing frames from aluminum profile rails

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2657798A1 (fr) *	1990-02-02	1991-08-09	Technal Snc	Outil autonome, notamment pour percer ou decolleter des profiles metalliques.
WO2005028137A1 (de) *	2003-09-03	2005-03-31	Bayerische Motoren Werke Aktiengesellschaft	Keiltriebwerkzeug mit zueinander verstellbaren elementen zum schneidlosen formen eines blechwerkstückes in einer presse
US7165438B2 (en)	2003-09-03	2007-01-23	Bayerische Motoren Werke Aktiengesellschaft	Wedge driving tool having mutually adjustable elements for the cutting and/or non-cutting shaping of a sheet metal workpiece in a press

Also Published As

Publication number	Publication date
FR2606684B1 (fr)	1989-02-17
GR3001919T3 (en)	1992-11-23
PT86158B (pt)	1993-08-31
DE3769946D1 (de)	1991-06-13
FR2606684A1 (fr)	1988-05-20
EP0272175B1 (de)	1991-05-08
ES2022420B3 (es)	1991-12-01
PT86158A (pt)	1988-12-15

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