EP1445042A1 - Multipress operating head for sheet metal punching machine with numerical control - Google Patents
Multipress operating head for sheet metal punching machine with numerical control Download PDFInfo
- Publication number
- EP1445042A1 EP1445042A1 EP04075317A EP04075317A EP1445042A1 EP 1445042 A1 EP1445042 A1 EP 1445042A1 EP 04075317 A EP04075317 A EP 04075317A EP 04075317 A EP04075317 A EP 04075317A EP 1445042 A1 EP1445042 A1 EP 1445042A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pistons
- punches
- multipress
- operating head
- punching
- 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
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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
- B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
-
- 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
- B21D28/246—Selection of punches
Definitions
- the present invention concerns a multipress operating head for sheet metal punching machine with numerical control.
- Punching machines with multipress head are known, which are made up of a plurality of hydraulic presses, close to each other, each one of which controls the vertical motion of a single punch.
- the main advantage of this constructive system resides in the fact that all the different punches that must be used in sequence in order to accompish the punching working of a piece are available and ready to operate, without need to carry out any tool change operation during the productive cycle; an improved productivity and precision of the machine is thus obtained, because the operations of tool substitution are avoided during the cycle and the total length of the distance that the piece, displaced by a manipulator along two directions perpendicular to each other, must cover in order to allow the execution of all the workings required on its surface is reduced.
- the main disadvantage of the current embodiment of this constructive system resides in the fact that the presses cover a same vertical stroke, independent from the type of working and from the thickness of the material that must be worked, reason for which the vertical stroke of descent and the relative time of execution of the single punchings are as a result often excessive as compared with what would be strictly necessary, and this is to the prejudice of the productivity of the machine.
- the maximum frequency of repetition of the punching movements is limited and inversely proportional to the working stroke of the punch (that is pre-established during the designing of the machine).
- tower-type punching machines whose commonly adopted constructive system provides for the presence of two discs with vertical axis, one above and one under the sheet, which bear on their periphery, housed in appropriate housings, one the punches and the other one the dies.
- the press that controls the descent of the punch is a single one, located in a fixed position on the edge of the structure. Appropriate controls make the two discs rotate in synchronous way, by taking under the ram of the piston of the single hydraulic press, each time, the punch and the relative die that are necessary to the execution of the working; simultaneously the manipulator brings the sheet in the correct position as regards the punch, in order to allow the execution of the holes and of the other workings.
- the control of the piston is servo-hydraulic, with continuous measurement of the vertical position of the piston along its own stroke.
- the resulting advantage is that punching frequencies higher than the ones obtained with the operating head of the punching press with multipress head can be obtained.
- Such advantage is achieved only by using punches for which the action of extraction of the cutter from the sheet is done due to the effect of a spring (or of a group of springs) inserted in opportune way in the cartridge that holds the same tool in guide and in position in the tool holder disc.
- the disadvantage is the time for the tool change that adds up to the one for the execution of the punchings and to the ones for the movement of the sheet between one punching and the other one.
- the punches can be both with extraction controlled by springs, and with extraction controlled mechanically; in this second case an adjustment of the head span is effectively provided, that is possible in a simple way because it consists in positioning in height the cartridge of the only punch that is mounted on the edge of the operating head.
- object of the present invention is to provide a multipress head for punching machine that allows to overcome the current disadvantages of the multipress head, while conserving at the same time the positive characteristics intrinsic to the peculiar architecture.
- a multipress head comprising a plurality of hydraulic presses, close to each other and each one made up of a hydraulic cylinder in which a respective piston slides, and a plurality of punches driven by respective pistons of said hydraulic presses, characterised in that:
- the time for the hydraulic pre-selection of the piston that one wants to operate, and also the time for the possible simultaneous commutation necessary to take the section of the selector disc above the punch, is much smaller than the time for the tool change of the other cited systems, and they are almost always carried out simultaneously with the movement for the repositioning of the piece to be worked by the manipulator.
- a multipress head 4 comprising a plurality of hydraulic presses 1 is shown that is made up of a cylinder 2 within which a piston 3 slides that has, in its upper part, a stem 16 that proj ects out of a block 17 in which the housings of the cylinders 2 are obtained; the stem 16 has an arm 18 that rests on a mobile equipment 19 (biased in rest position by a spring 30 or a similar elastic mean) of a position transducer 20.
- punching tools 6, hereinafter simply called punches which are vertically guided and withheld in position in the horizontal plane by an appropriate tool holder plate 21 integral with the head 4, extractable for the operations of preparation of the tooling out of the working cycles of the machine.
- each press 1 one or more punches 6 are located, some of which are grouped in sets and selectable with a mechanical selector 22 made up of a disc 7 mounted onto the lower end of the piston 3, put in rotation and positioned by an appropriate motorization with gear train (not shown), which disc 7 has a sector 8 with increased thickness.
- the positioning of the punches 6 is provided as a function of their radial volume; in particular, usually the punches 6 having large dimensions are controlled each one by a piston 3, whereas the ones with small dimensions can be grouped in sets with two or more, controlled by a single piston 3 through a mechanical selector 22.
- a die holder plate 31 is positioned which bears a plurality of dies 29 operatingly associated with respective punches 6.
- the position transducer 20 detects the position of the piston 3 by means of the stem 16 and the arm 18 that moves the mobile equipment 19 of the transducer 20 thereby allowing the continuous measurement of the vertical position of the piston 3.
- a position transducer 20 is positioned every four-six cylinders 2, so that the position measurement is taken just of the lowest piston among the ones that refer to the transducer 20, that is the piston 3 that was preventively put in communication with the servovalve 12 through its own pre-selection valve 13.
- This solution (a single position transducer 20 serving several pistons 3) is described in detail in a copending patent application of the same Applicant and it is herein applied in repeated way to several sets of pistons 3.
- springs 14-15 associated with the fact that the flange 24 is only in contact with the piston 3, allows to carry out the extraction by using the lower portion of the working stroke of the piston and the consequent compression of the two springs.
- the state of compression of the spring 14 thrusts upward the punch 6 connected with the stem 27 that transmits the motion to the piston 3 by means of the terminal flange 24, the state of compression of the spring 15 brings the cup 28 back to the rest position ( Figure 4-5).
- the advantage of said extraction system resides in that it does not need any adjustment of the working span of the head, it allows to provide the desired improvement of the working cycle, thus combining the advantages of the multipress head with the ones of the numerical control of the vertical position of the punch 6 and the amplitude of its usable stroke.
- the time for the hydraulic pre-selection of the piston 3 that one wants to operate, as also the time for the possible simultaneous commutation necessary to take the sector 8 of the selector disc 7 above the desired punch, is much smaller than the times for the tool change of the other cited systems, and takes place almost always simultaneously with the movement for the repositioning of the piece 26 to be worked by the manipulator.
- a similar concept can be applied also to possible punches that operate from the bottom upward, which work in combination with respective punches that descend from the top, cooperating to carry out plastic deformation workings in the so-called the "double effect" cycles.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Press Drives And Press Lines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Punching Or Piercing (AREA)
Abstract
Description
- The present invention concerns a multipress operating head for sheet metal punching machine with numerical control.
- Punching machines with multipress head are known, which are made up of a plurality of hydraulic presses, close to each other, each one of which controls the vertical motion of a single punch.
- The main advantage of this constructive system resides in the fact that all the different punches that must be used in sequence in order to accompish the punching working of a piece are available and ready to operate, without need to carry out any tool change operation during the productive cycle; an improved productivity and precision of the machine is thus obtained, because the operations of tool substitution are avoided during the cycle and the total length of the distance that the piece, displaced by a manipulator along two directions perpendicular to each other, must cover in order to allow the execution of all the workings required on its surface is reduced.
- The main disadvantage of the current embodiment of this constructive system resides in the fact that the presses cover a same vertical stroke, independent from the type of working and from the thickness of the material that must be worked, reason for which the vertical stroke of descent and the relative time of execution of the single punchings are as a result often excessive as compared with what would be strictly necessary, and this is to the prejudice of the productivity of the machine. In particular, the maximum frequency of repetition of the punching movements is limited and inversely proportional to the working stroke of the punch (that is pre-established during the designing of the machine).
- In modem punching machines of this type, operating with numerical control, it is also important to carry out the detection of the position of the punch being each time operated. In the case of multipunch machines however this would mean to use a position transducer for each punch. Such solution would involve great complexity and high cost for the machine.
- There are also tower-type punching machines, whose commonly adopted constructive system provides for the presence of two discs with vertical axis, one above and one under the sheet, which bear on their periphery, housed in appropriate housings, one the punches and the other one the dies. The press that controls the descent of the punch is a single one, located in a fixed position on the edge of the structure. Appropriate controls make the two discs rotate in synchronous way, by taking under the ram of the piston of the single hydraulic press, each time, the punch and the relative die that are necessary to the execution of the working; simultaneously the manipulator brings the sheet in the correct position as regards the punch, in order to allow the execution of the holes and of the other workings. Usually the control of the piston is servo-hydraulic, with continuous measurement of the vertical position of the piston along its own stroke.
- The resulting advantage is that punching frequencies higher than the ones obtained with the operating head of the punching press with multipress head can be obtained. Such advantage is achieved only by using punches for which the action of extraction of the cutter from the sheet is done due to the effect of a spring (or of a group of springs) inserted in opportune way in the cartridge that holds the same tool in guide and in position in the tool holder disc.
- In case one wishes to use punches in which the extraction is mechanically controlled by the piston, in order to limit the strokes to the strictly necessary and thus to obtain favourable production rates, it is necessary in any case to predispose the operating head at a reduced height, variable as a function of the thickness and of the conditions of working, by vertically moving the entire upper punch holder disc, which creates a not negligible complication; in practice, no manufacturer adopts this latter solution.
- The main disadvantage of this type of operating head consists in that each time that the shape of the punch must be changed, it is necessary to make the tower rotate, operation whose duration is not negligible, and that in practice adds up to the time for the execution of the punchings.
- There are finally single-punch punching machines with tool change. One of these provides for the presence of a single servo hydraulic press with numerical control vertical movement, on which an appropriate mechanism of punch change installs, each time, the punch and the relative motor necessary for the working of the piece, between a sequence of punchings and the other one.
- In this case too the advantage is given by the high frequency of punching that is obtainable.
- The disadvantage is the time for the tool change that adds up to the one for the execution of the punchings and to the ones for the movement of the sheet between one punching and the other one.
- In this type of embodiment the punches can be both with extraction controlled by springs, and with extraction controlled mechanically; in this second case an adjustment of the head span is effectively provided, that is possible in a simple way because it consists in positioning in height the cartridge of the only punch that is mounted on the edge of the operating head.
- In view of this state of the art, object of the present invention is to provide a multipress head for punching machine that allows to overcome the current disadvantages of the multipress head, while conserving at the same time the positive characteristics intrinsic to the peculiar architecture..
- According to the invention such object is attained with a multipress head comprising a plurality of hydraulic presses, close to each other and each one made up of a hydraulic cylinder in which a respective piston slides, and a plurality of punches driven by respective pistons of said hydraulic presses, characterised in that:
- a) said pistons are grouped into sets of pistons that are associated with a respective single position transducer with unidirectional mechanical connection in such a way that the transducer follows the punching movement of any one of said pistons while the other pistons remain at rest;
- b) at least one of said pistons is coupled to several punches through a selector in order to control each time the punching movement of a selected one of said punches;
- c) said pistons are operatively connected with said punches in such a way that said punches rigidly follow the punching movement of said pistons and have instead back stroke elastically controlled in a way independent from the position of said pistons.
-
- In this way, by combining the hydraulic pre-selection of the piston with the possible mechanical pre-selection of the punch to be stricken, applied by using punches with spring extraction, which have the property of executing the extraction by using the lower portion of the working stroke to charge the spring, and do not require therefore the adjustment of the working span of the head, allows to provide the desired improvement of the working cycle, by combining the advantages of the multipress head with the ones of the numerical control of the vertical position of the punch and of the amplitude of its usable stroke.
- The time for the hydraulic pre-selection of the piston that one wants to operate, and also the time for the possible simultaneous commutation necessary to take the section of the selector disc above the punch, is much smaller than the time for the tool change of the other cited systems, and they are almost always carried out simultaneously with the movement for the repositioning of the piece to be worked by the manipulator.
- The object to have all the punches of a multipress operating head carry out only the vertical stroke strictly necessary to the execution of the working is thus attained, being such stroke numerically controlled through a system provided with pistons connected with position transducers, which are controlled in turn by a servovalve, the entire unit being controlled by an appropriate programmable electronic control unit.
- These and other characteristics of the present invention will be made more evident by the following detailed description of an embodiment that is illustrated as a non limiting example in the enclosed drawings, in which:
- Figure 1 schematically shows in perspective view a multipress head according to the present invention;
- Figure 2 shows the hydraulic scheme of principle of the multipress head of Figure 1;
- Figures 3-5 show the magnified detail of the operating and elastic return system of the punches in the steps of rest, cut and back to rest.
-
- In Figure 1 a
multipress head 4 comprising a plurality of hydraulic presses 1 is shown that is made up of acylinder 2 within which apiston 3 slides that has, in its upper part, astem 16 that proj ects out of ablock 17 in which the housings of thecylinders 2 are obtained; thestem 16 has anarm 18 that rests on a mobile equipment 19 (biased in rest position by aspring 30 or a similar elastic mean) of aposition transducer 20. Below thehead 4 there arepunching tools 6, hereinafter simply called punches, which are vertically guided and withheld in position in the horizontal plane by an appropriatetool holder plate 21 integral with thehead 4, extractable for the operations of preparation of the tooling out of the working cycles of the machine. Under each press 1 one ormore punches 6 are located, some of which are grouped in sets and selectable with amechanical selector 22 made up of adisc 7 mounted onto the lower end of thepiston 3, put in rotation and positioned by an appropriate motorization with gear train (not shown), whichdisc 7 has asector 8 with increased thickness. The positioning of thepunches 6 is provided as a function of their radial volume; in particular, usually thepunches 6 having large dimensions are controlled each one by apiston 3, whereas the ones with small dimensions can be grouped in sets with two or more, controlled by asingle piston 3 through amechanical selector 22. - Below the punch holder plate 21 a
die holder plate 31 is positioned which bears a plurality ofdies 29 operatingly associated withrespective punches 6. - In Figure 2 the principle of combination of the hydraulic pre-selection with the mechanical one and with the
transducer 20 common forseveral pistons 3, that is suitable to provide in complete way the concept of multipress head with direct numerical control of the vertical motion of all thepunches 6 is summarised in schematic way. The unidirectional motion of thepistons 3 is controlled by acontrol unit 10 through a hydraulic circuit that regulates the descent/ascent of apistons 3 by means of acontrol servovalve 12 and ofpre-selection valves 13. - The position transducer 20 detects the position of the
piston 3 by means of thestem 16 and thearm 18 that moves themobile equipment 19 of thetransducer 20 thereby allowing the continuous measurement of the vertical position of thepiston 3. For reasons of economy and availability of space aposition transducer 20 is positioned every four-sixcylinders 2, so that the position measurement is taken just of the lowest piston among the ones that refer to thetransducer 20, that is thepiston 3 that was preventively put in communication with theservovalve 12 through its ownpre-selection valve 13. This solution (asingle position transducer 20 serving several pistons 3) is described in detail in a copending patent application of the same Applicant and it is herein applied in repeated way to several sets ofpistons 3. - The combination of the hydraulic pre-selection of the working
piston 3 with the possible mechanical pre-selection of thepunch 6 to be struck is applied using thepunches 6 with extraction spring 14-15 (Figure 3-5), where thespring 14, more rigid, is interposed between apunch holder cup 28 and aterminal flange 24 of astem 27 to which thepunch 6 is fastened, whereas thespring 15, more tender, is interposed between thepunch holder cup 28 and thetool holder plate 21. In the same figures the cutter of thepunch 6 is indicated by 23, whereas 26 indicates the sheet to be punched. - The use of springs 14-15, associated with the fact that the
flange 24 is only in contact with thepiston 3, allows to carry out the extraction by using the lower portion of the working stroke of the piston and the consequent compression of the two springs. In particular, once the descent of thepiston 3 is over and the lift back has started, the state of compression of thespring 14 thrusts upward thepunch 6 connected with thestem 27 that transmits the motion to thepiston 3 by means of theterminal flange 24, the state of compression of thespring 15 brings thecup 28 back to the rest position (Figure 4-5). - The advantage of said extraction system resides in that it does not need any adjustment of the working span of the head, it allows to provide the desired improvement of the working cycle, thus combining the advantages of the multipress head with the ones of the numerical control of the vertical position of the
punch 6 and the amplitude of its usable stroke. - The time for the hydraulic pre-selection of the
piston 3 that one wants to operate, as also the time for the possible simultaneous commutation necessary to take thesector 8 of theselector disc 7 above the desired punch, is much smaller than the times for the tool change of the other cited systems, and takes place almost always simultaneously with the movement for the repositioning of thepiece 26 to be worked by the manipulator. - A similar concept can be applied also to possible punches that operate from the bottom upward, which work in combination with respective punches that descend from the top, cooperating to carry out plastic deformation workings in the so-called the "double effect" cycles.
- Similarly, instead of the punches, an analogous movement of the dies and relative detection of the same can be provided. Therefore where it is spoken about punches dies must also be meant.
Claims (7)
- Multipress operating head with numerical control for sheet metal punching machine, comprising a plurality of hydraulic presses (1), close to each other and each one made up of a hydraulic cylinder (2) in which a respective piston (3) slides, and a plurality of punches (6) driven by respective pistons (3) of said hydraulic presses (1)1, characterised in that:a) said pistons (3) are grouped into sets of pistons associated with a respective single position transducer (20) with unidirectional mechanical connection so that the transducer (20) follows the punching movement of any one of said pistons (3) while the other pistons (3) remain at rest;b) at least one of said pistons (3) is coupled to several punches (6) through a selector (22) so as to control each time the punching movement of a selected one of said punches (6);c) said pistons (3) are operatingly connected with said punches (6) so that said punches (6) rigidly follow the movement of said punching pistons (3) and have instead back strokes elastically controlled in a way independent from the position of said pistons (3).
- Multipress operating head according to claim 1, characterised in that said pistons (3) are connected with said transducer (20) by means of a mobile equipment (19), that is rigidly connected with said transducer (20), on which arms (18) rest that are rigidly bound to respective pistons (3) and that is biased into rest position by a spring (30).
- Multipress operating head according to claim 1, characterised in that it comprises a control unit (10), connected with said transducer (20), that controls a hydraulic circuit for the selection and the operation of said pistons (3) by means of a control servovalve (12) and of pre-selection valves (13).
- Multipress operating head according to claim 1, characterised in that it comprises that said mechanical selector (22) is made up of a disc (7) provided with a part (8) with increased thickness.
- Multipress operating head according to claim 4, characterised in that said mechanical selector (22) is put in the working position by a gear motorization controlled by a control unit (10).
- Multipress operating head according to claim 1, characterised in that said pistons (3) rest on said punches (6) and springs (14-15) are provided that control said back stroke of said punches (6).
- Multipress operating head according to claim 5, characterised in that a first spring (14) is operatingly interposed between the punch (6) and a punch holder cup (28) in which said punch (6) slides and a second spring (15) is operatingly interposed between said cup (28) and a tool holder plate (21) in which said cup (28) slides, in such a way that, in the position of end of descent said pistons (3), said first spring (14) controls said back stroke of said punches (6) and said second spring (15), less rigid than said first spring (14), controls a back stroke of said cup (28).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI20030218 | 2003-02-07 | ||
IT000218A ITMI20030218A1 (en) | 2003-02-07 | 2003-02-07 | MULTIPRESS OPERATING HEAD FOR NUMERIC CONTROL PUNCHING MACHINE FOR SHEETS OF SHEET |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1445042A1 true EP1445042A1 (en) | 2004-08-11 |
EP1445042B1 EP1445042B1 (en) | 2006-04-26 |
EP1445042B8 EP1445042B8 (en) | 2006-08-16 |
Family
ID=32652468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04075317A Expired - Lifetime EP1445042B8 (en) | 2003-02-07 | 2004-02-03 | Multipress operating head for sheet metal punching machine with numerical control |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1445042B8 (en) |
AT (1) | ATE324200T1 (en) |
DE (1) | DE602004000696T2 (en) |
DK (1) | DK1445042T3 (en) |
ES (1) | ES2262086T3 (en) |
IT (1) | ITMI20030218A1 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1759782A1 (en) * | 2005-09-02 | 2007-03-07 | Arcelor Steel Service Centres | Machine and method for machining metal sheets |
WO2009012028A1 (en) * | 2007-07-17 | 2009-01-22 | Wilson Tool International Inc. | Multi-drive tooling |
EP2153915A1 (en) * | 2007-05-22 | 2010-02-17 | Ones CO., LTD. | Thin plate metal punching die and thin plate metal punching apparatus provided with the die |
EP2177290A1 (en) | 2008-10-18 | 2010-04-21 | Trumpf Werkzeugmaschinen GmbH + Co. KG | Method for defining a punching tool set for punching of work pieces and punching machine with such a punching tool set |
WO2011154832A1 (en) | 2010-06-08 | 2011-12-15 | Cosma S.R.L. | Punching machine for metal sheet |
ITVE20130049A1 (en) * | 2013-09-20 | 2015-03-21 | Dallan Spa | PUNCHING HEAD FOR PUNCHING MACHINES.- |
EP2954962A1 (en) | 2014-06-13 | 2015-12-16 | SALVAGNINI ITALIA S.p.A. | Punching apparatus |
WO2016016807A1 (en) * | 2014-07-29 | 2016-02-04 | Salvagnini Italia S.P.A. | Punching apparatus |
WO2020070614A1 (en) * | 2018-10-01 | 2020-04-09 | Salvagnini Italia S.P.A. | Hydraulic drive system for a punching apparatus |
WO2020070617A1 (en) * | 2018-10-01 | 2020-04-09 | Salvagnini Italia S.P.A. | Sheet metal working machine |
IT201900010191A1 (en) * | 2019-06-26 | 2020-12-26 | Salvagnini Italia Spa | MACHINE FOR WORKING METAL SHEETS |
RU2775455C1 (en) * | 2018-10-01 | 2022-07-01 | Сальваньини Италия С.П.А. | Hydraulic drive system for a punching apparatus |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110802150B (en) * | 2019-11-28 | 2020-11-03 | 浦江吉树机械科技有限公司 | Metal gasket stamping equipment |
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---|---|---|---|---|
US4391123A (en) * | 1979-09-12 | 1983-07-05 | Salvagnini Transferica S.P.A. | Automatic punching machine |
EP0140373A2 (en) * | 1983-10-31 | 1985-05-08 | Dietz NC-Werkzeugsysteme | Cutting press and tool set for cutting presses |
EP0183298A2 (en) * | 1984-11-28 | 1986-06-04 | SALVAGNINI TRANSFERICA S.p.A. | Punch press with a number of selectable punches |
US4700441A (en) * | 1984-10-12 | 1987-10-20 | Amada Company, Limited | Tapping machine |
US5301585A (en) * | 1991-05-27 | 1994-04-12 | Amada Sonoike Co., Ltd. | Punch pressing machine |
-
2003
- 2003-02-07 IT IT000218A patent/ITMI20030218A1/en unknown
-
2004
- 2004-02-03 DK DK04075317T patent/DK1445042T3/en active
- 2004-02-03 AT AT04075317T patent/ATE324200T1/en active
- 2004-02-03 DE DE602004000696T patent/DE602004000696T2/en not_active Expired - Lifetime
- 2004-02-03 EP EP04075317A patent/EP1445042B8/en not_active Expired - Lifetime
- 2004-02-03 ES ES04075317T patent/ES2262086T3/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4391123A (en) * | 1979-09-12 | 1983-07-05 | Salvagnini Transferica S.P.A. | Automatic punching machine |
EP0140373A2 (en) * | 1983-10-31 | 1985-05-08 | Dietz NC-Werkzeugsysteme | Cutting press and tool set for cutting presses |
US4700441A (en) * | 1984-10-12 | 1987-10-20 | Amada Company, Limited | Tapping machine |
EP0183298A2 (en) * | 1984-11-28 | 1986-06-04 | SALVAGNINI TRANSFERICA S.p.A. | Punch press with a number of selectable punches |
US5301585A (en) * | 1991-05-27 | 1994-04-12 | Amada Sonoike Co., Ltd. | Punch pressing machine |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007026079A1 (en) * | 2005-09-02 | 2007-03-08 | Arcelor Steel Service Centres | System and operating methods of a set of panels |
EP1759782A1 (en) * | 2005-09-02 | 2007-03-07 | Arcelor Steel Service Centres | Machine and method for machining metal sheets |
EP2153915A1 (en) * | 2007-05-22 | 2010-02-17 | Ones CO., LTD. | Thin plate metal punching die and thin plate metal punching apparatus provided with the die |
EP2153915A4 (en) * | 2007-05-22 | 2013-08-28 | Ones Co Ltd | Thin plate metal punching die and thin plate metal punching apparatus provided with the die |
WO2009012028A1 (en) * | 2007-07-17 | 2009-01-22 | Wilson Tool International Inc. | Multi-drive tooling |
US8001823B2 (en) | 2007-07-17 | 2011-08-23 | Wilson Tool International Inc. | Multi-drive tooling |
US9573182B2 (en) | 2008-10-18 | 2017-02-21 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Reprocessed dies |
EP2177290A1 (en) | 2008-10-18 | 2010-04-21 | Trumpf Werkzeugmaschinen GmbH + Co. KG | Method for defining a punching tool set for punching of work pieces and punching machine with such a punching tool set |
US8701532B2 (en) | 2008-10-18 | 2014-04-22 | Trumpf Werkzeugmaschinen Gmbh + Co. Kg | Reprocessed dies |
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ITVE20130049A1 (en) * | 2013-09-20 | 2015-03-21 | Dallan Spa | PUNCHING HEAD FOR PUNCHING MACHINES.- |
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JP2022502263A (en) * | 2018-10-01 | 2022-01-11 | サルヴァニーニ イタリア エッセ.ピ.ア.SALVAGNINI ITALIA S.p.A. | Hydraulic operation system for punching equipment |
JP2022504117A (en) * | 2018-10-01 | 2022-01-13 | サルヴァニーニ イタリア エッセ.ピ.ア. | Thin sheet metal processing machine |
JP7048821B2 (en) | 2018-10-01 | 2022-04-05 | サルヴァニーニ イタリア エッセ.ピ.ア. | Hydraulic operation system for punching equipment |
JP7048822B2 (en) | 2018-10-01 | 2022-04-05 | サルヴァニーニ イタリア エッセ.ピ.ア. | Thin sheet metal processing machine |
RU2775455C1 (en) * | 2018-10-01 | 2022-07-01 | Сальваньини Италия С.П.А. | Hydraulic drive system for a punching apparatus |
IT201900010191A1 (en) * | 2019-06-26 | 2020-12-26 | Salvagnini Italia Spa | MACHINE FOR WORKING METAL SHEETS |
Also Published As
Publication number | Publication date |
---|---|
ES2262086T3 (en) | 2006-11-16 |
ATE324200T1 (en) | 2006-05-15 |
DK1445042T3 (en) | 2006-08-21 |
DE602004000696D1 (en) | 2006-06-01 |
EP1445042B1 (en) | 2006-04-26 |
DE602004000696T2 (en) | 2006-09-21 |
EP1445042B8 (en) | 2006-08-16 |
ITMI20030218A1 (en) | 2004-08-08 |
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