EP1625901A1 - Presse avec dispositif de détection de la position de référence mutuelle des parties d' outils d' un outil de presse - Google Patents

Presse avec dispositif de détection de la position de référence mutuelle des parties d' outils d' un outil de presse Download PDF

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Publication number
EP1625901A1
EP1625901A1 EP04018859A EP04018859A EP1625901A1 EP 1625901 A1 EP1625901 A1 EP 1625901A1 EP 04018859 A EP04018859 A EP 04018859A EP 04018859 A EP04018859 A EP 04018859A EP 1625901 A1 EP1625901 A1 EP 1625901A1
Authority
EP
European Patent Office
Prior art keywords
pressure
tool
reference element
press
control
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
EP04018859A
Other languages
German (de)
English (en)
Other versions
EP1625901B1 (fr
Inventor
Martin Thomä
Peter Bytow
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.)
Trumpf Werkzeugmaschinen SE and Co KG
Original Assignee
Trumpf Werkzeugmaschinen SE and Co KG
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
Priority to DE502004007062T priority Critical patent/DE502004007062D1/de
Priority to ES04018859T priority patent/ES2305629T3/es
Priority to PL04018859T priority patent/PL1625901T3/pl
Priority to EP04018859A priority patent/EP1625901B1/fr
Priority to AT04018859T priority patent/ATE394180T1/de
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Priority to US11/197,770 priority patent/US7168277B2/en
Priority to JP2005231272A priority patent/JP4751128B2/ja
Publication of EP1625901A1 publication Critical patent/EP1625901A1/fr
Application granted granted Critical
Publication of EP1625901B1 publication Critical patent/EP1625901B1/fr
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

Definitions

  • the invention further relates to a reference element of the type mentioned.
  • EP 1 123 169 B1 The generic state of the art is disclosed in EP 1 123 169 B1.
  • press a punch and a die of a press tool in the stroke direction are moved against each other until the punch touches on the die or on a arranged between the punch and the die plate.
  • the resulting relative position of punch and die forms a reference position from which the length of the punch is determined.
  • the position of the die-distant punch end is to be detected when the die is seated on the die or on the die mounted on the die.
  • a detection unit which is activated as soon as the punch comes to rest on the die or on the sheet metal.
  • the detection process is triggered by the increase in the power consumption of the press drive associated with the application of the die or the sheet by the punch.
  • the control of a switching device for the detection unit is therefore integrated into the press drive.
  • the punch and matrix simultaneously serve as reference elements for detecting their mutual reference position. If the position of the die distal end of the punch is determined, the punch length is calculated on the basis of this position as well as on the further known position of the die surface acted upon by the punch and, if appropriate, on the basis of the likewise known thickness of the metal sheet between punch and die.
  • the function control is therefore decoupled at least substantially from the machine drive for regular machine operation. This results in particular in the possibility to supplement the functionality of existing presses with relatively little effort by the function "reference position detection".
  • the control pulse generator according to the invention is arranged in a region of the press equipped with it, in which it is easily accessible, for example, for maintenance and repair or repair.
  • control pulse generator provided in the case of the invention can be of very different types.
  • a control pulse generator a control pressure transducer is provided, the pressure of which can be tapped as the control pressure for actuating the switching device for the detection unit. With pressure, a parameter is used to control the switching device for the detection unit, which allows a functionally reliable activation of the detection unit.
  • a pressure volume is expediently provided as a control pressure generator, on which the control pressure for actuating the switching device for the detection unit can be tapped.
  • control pressure for activating the detection unit for the reference position detection is generated in a further embodiment of the invention by means of a flowable pressure medium.
  • fluid pressure media are usually available on presses, for example in the form of compressed air from the outset.
  • the adjustment of the control pressure by means of flowable pressure media can be realized in a constructive, in particular control technology simple way.
  • a lower initial pressure is increased with the supply of fluid pressure medium to the control pressure.
  • a higher initial pressure is lowered to the control pressure for this purpose.
  • a simple but nevertheless functionally reliable constructive possibility for generating a control pulse, optionally a control pressure, is described in claim 6.
  • one of the reference elements is used to activate a control pulse generator on the other reference element.
  • control pistons are provided according to the invention especially when the switching device is actuated pressure-controlled for the detection unit.
  • the tool storage can either - according to their actual function - for receiving a part of the press tool or - if necessary - serve to receive a reference element for the reference position detection.
  • a tool storage as a reference element storage to be used in the relevant tool storage reference element is formed in its storage area corresponding to one of the tool storage at regular workpiece machining associated tool part of the press tool.
  • the material to be loaded into the relevant tool storage Reference element in the reference position detection is also defined, as the tool storage associated tool parts in the workpiece machining.
  • the provisional fixation of the respective reference element in the tool storage can be done in the same manner as the temporary fixation of tool parts of the press tool.
  • the tool storage is used with a connection to a source of fluid pressure medium at the same time to generate a control pulse in the reference position detection and as part of a used in workpiece machining device for tool recognition on the tool storage.
  • essential means for activating the function "reference position detection” are integrated into the reference element (s). Consequently Retrofitting already existing presses with the function "reference position detection” is particularly easy. This is especially true in the event that a tool storage for a tool part of the press tool is provided as a reference element storage.
  • Claim 14 relates to particularly practice-relevant applications of the reference position detection according to the invention.
  • the Matrizenage 3 is as usual stationary integrated into a machine table, not shown.
  • the punch holder 2 is provided on a ram, also not shown, which is movable by means of a motorized press drive 4 in a stroke direction 5 illustrated by a double arrow.
  • the press drive 4 of the press 1 is controlled by means of a numerical machine control 6, via which in particular the stroke end positions of the plunger of the press 1 in the stroke direction 5 are adjustable.
  • a processing die of conventional design is inserted into the punch holder 2, into the die holder 3 a conventional processing die.
  • a compressed air supply 7 of the press 1 opens with a compressed air line 8 in the wall of the die holder.
  • the compressed air line 8 Prior to commissioning of the press drive 4, the compressed air line 8 is acted upon by appropriate control of a compressed air valve 9 by means of the machine control 6 with compressed air. If a processing die is inserted into the die receptacle 3, then it closes the mouth of the compressed air line 8 against the wall of the die receptacle 3. It then builds up an overpressure in the compressed air line 8. This build-up of pressure remains off if in the die holder 3 accidentally no editing die was loaded. In any case, the pressure in the compressed air line 8 is tapped by a pressure gauge 10. Only upon detection of an overpressure in the compressed air line 8, the pressure gauge 10 generates a signal for the machine control 6, due to which the press drive 4 is set in motion. The compressed air line 8 therefore forms part of a device used for workpiece machining device detection.
  • the processing plunger immersed in unintentional adjustment of the lower stroke end position either not far enough or too far in the sheet 11 to be processed.
  • the faulty immersion depth of the processing stamp leads to a reduction in the quality of the processing result.
  • fluctuations in the thickness of metal sheets 11 to be machined affect. If, for example, the thickness of a sheet metal 11 unexpectedly lower than assumed, this leads to the fact that the machining punch is not pressed into the sheet 11 with a sufficient penetration depth for a given stroke end position adjustment in the lower stroke end position.
  • the lower stroke end position of the processing punch is checked on the press 1 from time to time and if necessary Newly listed.
  • a mutual reference position of the processing punch and the processing die in the stroke direction 5 is detected.
  • the processing die is exchanged against a lower reference element 13 on the punch holder 2 against an upper reference element 12, on the die holder 3.
  • This change is carried out automatically as usual tool changes.
  • the punch holder 2 and the die holder 3 now form reference element bearings.
  • the reference elements 12, 13 have for provisional fixation in the punch holder 2 and in the die holder 3 storage facilities that correspond to those of the processing punch and the processing die.
  • the sheet 11 to be processed is moved by means of a conventional coordinate guide into the intermediate space between the upper reference element 12 and the lower reference element 13, where it comes to rest on a workpiece support 14 of the lower reference element 13.
  • the situation according to FIG. 1 results.
  • the workpiece support 14 is spaced relatively far from a base part 15 of the lower reference element 13 in the stroke direction 5. In the stroke direction 5, the workpiece support 14 is movably guided on the base part 15.
  • a spool 16 with an air passage 17 is attached to the workpiece support 14 and projects into a chamber 18 on the base part 15 The spool 16 closes a compressed air line 19 of the base part 15 on the side of the chamber 18.
  • the chamber 18 opposite the compressed air line 19 of the base part 15 opens into the compressed air line 8 at the die receiving third
  • the compressed air valve 9 is opened by appropriate control by means of the machine control 6.
  • the compressed air line 8 are fed to the die holder 3 and the compressed air line 19 to the base part 15 of the lower reference element 13 of the compressed air supply 7 of the press 1 with compressed air.
  • the compressed air line 19 is closed at its end facing the chamber 18 of the base member 15 through the spool 16, an overpressure builds up in the interior of the compressed air lines 8, 19, which finally the value of the overpressure in the compressed air line 8 in the Matrizenability 3 processing matrice reached.
  • the pressure volume contained in the compressed air lines 8, 19 forms a pressure transducer for the pressure gauge 10, from which the internal pressure in the compressed air lines 8, 19 is tapped.
  • the pressure gauge 10 If the pressure in the interior of the compressed air lines 8, 19 corresponds to the pressure in the compressed air line 8 when the press 1 is ready for operation, the pressure gauge 10 generates a signal for the numerical machine control 6, via which the press drive 4 of the press 1 is set in motion.
  • the press drive 4 By means of the press drive 4, the punch holder 2 is lowered with the upper reference element 12 in the stroke direction 5.
  • the upper reference element 12 runs on the sheet 11 and pushes this together with the workpiece support 14 of the lower reference element 13 in the direction of the base part 15 of the lower reference element 13. This is accompanied by a corresponding displacement of the spool 16 on the workpiece support 14.
  • the spool 16 reaches it with the air passage 17 which to the chamber 18th
  • the compressed air lines 8, 19 pending compressed air can now via the air passage 17 of the spool 16 in the chamber 18 of the lower reference element 13 and from there escape through a remaining between the workpiece support 14 and the base part 15 of the lower reference element 13 gap.
  • the internal pressure in the compressed air lines 8, 19 drops. Also, the lowered pressure is detected by the pressure gauge 10.
  • the workpiece support 14 is lowered together with the spool 16 in the stroke direction 5 until the workpiece support 14 touches the base part 15 of the lower reference element 13. In this position, the workpiece support 14 in the lifting direction 5, the air passage 17 of the spool 16 is still at the level of the mouth of the compressed air line 19. Up to this operating condition, the lowering of the plunger of the press 1 for relocating the workpiece support 14 of the lower reference element 13 in the stroke direction 5 down at a relatively high speed. As a result of the loading of the base part 15, the lower reference element 13th total pressed against the bottom of the matrix holder 3. Any incorrect positioning of the lower reference element 13 is thereby eliminated.
  • the spool 16 Connected to the return stroke of the workpiece support 14 is a corresponding movement of the spool 16.
  • the spool 16 leaves it with the air passage 17 the area of the mouth of the compressed air line 19 and reaches its position shown in FIG. 1, in which he the compressed air line 19 at the the chamber 18 side closes closes.
  • Connected to the closure of the compressed air line 19 is an increase in pressure in the compressed air lines 8, 19.
  • the pressure gauge 10 As soon as the increase in pressure starts and is tapped by the pressure gauge 10 on the compressed air lines 8, 19, the pressure gauge 10 generates a signal for the machine control 6, due to which the press drive 4 is stopped and the position of the upper reference element 12 in the stroke direction 5 is detected becomes.
  • the pressure-controlled generated by the pressure gauge 10 signal causes the operation of an integrated in the machine control 6 switching device for serving as a detection unit path measuring system of the machine control 6.
  • the detection unit or the path measuring system is thereby activated and detects the position of the upper Reference element 12.
  • the upper reference element 12 with the workpiece support 14 of the lower reference element 13 resting against it over the metal sheet 11 was moved from the previous maximum lowered position at a comparatively low speed.
  • a timely and thus accurate detection of the beginning of the pressure increase was ensured at the transition of the spool 16 of a compressed air outlet from the compressed air line 19 enabling in a the compressed air outlet blocking position.
  • the lower reference element 13 with the top of the workpiece support 14 in the stroke direction 5 at a level representing the level of the top of the processing die in the workpiece machining is shown
  • the level of the upper side of the workpiece support 14 on the lower reference element 13 that corresponds to FIG. 1 corresponds to the level of the upper side of the machining die.
  • the position which occupies the upper reference element 12 upon direct loading of the located in the position shown in FIG. 1 workpiece support 14 of the lower reference element 13, is in a defined relationship with the lower stroke end target position, in which the processing punch during workpiece machining for Achieving a high quality machining result in the stroke direction 5 is to move. From this position, the upper reference element 12 as shown in FIG. 1 is separated by the previously determined thickness of the sheet 11. On the basis of the determined sheet thickness, that position of the upper reference element 12 can be determined, which is assigned to the lower stroke-end desired position of the processing punch. From the so determined position of the upper reference element 12, finally, the lower stroke-end target position of the pressesstkovs can be derived.
  • a corresponding stroke end position control or correction can be performed by means of the reference elements 12, 13 even without the inclusion of the sheet 11.
  • the upper reference element 12 sets directly on the workpiece support 14 of the lower reference element 13.
  • the timing of the position detection is marked by the beginning of the pressure increase in the compressed air lines 8, 19 at a slow return stroke of the workpiece support 14 from the maximum lowered position.
  • the previously described in principle lower reference element 13 is shown in detail.
  • the base part 15 of the lower reference element 13 is thus pot-shaped and engages with an inwardly projecting pot edge 20, the spool 16.
  • the control slide 16 forms a control piston which is screwed to the workpiece support 14 of the lower reference element 13.
  • the diameter of the control piston or spool 16 is smaller than the diameter of him receiving and bounded by the pot edge 20 undercut on the base part 15 of the lower reference element 13.
  • the space 24 between the top of the pot rim 20 and the underside of the edge of the workpiece support 14 forms the air passage 17 according to FIGS. 1 and 2.
  • FIG. 5 is in the die holder 3 on the press 1 differing from the ratios according to FIGS. 1 and 2 a lower reference element 33 replaced.
  • This is integrally formed and provided with a chamber 38 and a compressed air line 39.
  • the compressed air line 39 is connected to the compressed air line 8 of the die receiving 3.
  • An upper reference element 32 assigned to the lower reference element 33 corresponds in its construction to the upper reference element 12 according to FIGS. 1 and 2.
  • the detection of the relative position of upper reference element 32 and lower reference element 33 in lifting direction 5 is triggered as soon as the upper reference element 32 touches on the lower reference element 33.
  • Characterized the chamber 38 is closed inside the lower reference element 33 and inside the chamber 38 and the compressed air lines 8, 39 builds up under the action of a compressed air supply by the compressed air supply 7, an overpressure.
  • the pressure volume in the interior of the chamber 38 and the compressed air lines 8, 39 forms a control pressure transducer for the pressure gauge 10. This takes the overpressure and causes after the above to Figs.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Punching Or Piercing (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
EP04018859A 2004-08-09 2004-08-09 Presse avec dispositif de détection de la position de référence mutuelle des parties d' outils d' un outil de presse Expired - Lifetime EP1625901B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES04018859T ES2305629T3 (es) 2004-08-09 2004-08-09 Prensa con dispositivo para la deteccion de una posicion de referencia mutua de sus componentes.
PL04018859T PL1625901T3 (pl) 2004-08-09 2004-08-09 Prasa z urządzeniem do wyznaczania wzajemnego położenia odniesienia części narzędzia tłocznego
EP04018859A EP1625901B1 (fr) 2004-08-09 2004-08-09 Presse avec dispositif de détection de la position de référence mutuelle des parties d' outils d' un outil de presse
AT04018859T ATE394180T1 (de) 2004-08-09 2004-08-09 Presse mit einer vorrichtung zur erfassung einer gegenseitigen referenzlage von werkzeugteilen eines pressenwerkzeuges
DE502004007062T DE502004007062D1 (de) 2004-08-09 2004-08-09 Presse mit einer Vorrichtung zur Erfassung einer gegenseitigen Referenzlage von Werkzeugteilen eines Pressenwerkzeuges
US11/197,770 US7168277B2 (en) 2004-08-09 2005-08-05 Press with a device for detecting a mutual reference position of tool parts of a pressing tool
JP2005231272A JP4751128B2 (ja) 2004-08-09 2005-08-09 プレス工具の工具部分の相互の基準位置を検出するための装置を備えたプレス

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04018859A EP1625901B1 (fr) 2004-08-09 2004-08-09 Presse avec dispositif de détection de la position de référence mutuelle des parties d' outils d' un outil de presse

Publications (2)

Publication Number Publication Date
EP1625901A1 true EP1625901A1 (fr) 2006-02-15
EP1625901B1 EP1625901B1 (fr) 2008-05-07

Family

ID=34926106

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04018859A Expired - Lifetime EP1625901B1 (fr) 2004-08-09 2004-08-09 Presse avec dispositif de détection de la position de référence mutuelle des parties d' outils d' un outil de presse

Country Status (7)

Country Link
US (1) US7168277B2 (fr)
EP (1) EP1625901B1 (fr)
JP (1) JP4751128B2 (fr)
AT (1) ATE394180T1 (fr)
DE (1) DE502004007062D1 (fr)
ES (1) ES2305629T3 (fr)
PL (1) PL1625901T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2092994A1 (fr) * 2008-02-22 2009-08-26 Trumpf Werkzeugmaschinen GmbH + Co. KG Machine-outil destinée à la coupe et/ou au formage de pièces à usiner en plaques
CN103100582A (zh) * 2013-03-12 2013-05-15 福安市启航自动化科技有限公司 毛坯件在冲压模具内放置位置的光电检测方法和检测装置
EP2602035A1 (fr) * 2011-12-06 2013-06-12 Ray Arbesman Appareil de texturation de la surface d'une plaque de frein
CN104209370B (zh) * 2014-09-30 2016-08-24 宁波固安力机械科技有限公司 冲床的冲孔检测装置

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503242B2 (en) * 2005-11-15 2009-03-17 Bobby Hu Method for manufacturing wrench handle with pressed indentation section
DE502007002935D1 (de) * 2007-06-30 2010-04-08 Trumpf Werkzeugmaschinen Gmbh Werkzeugmaschine und Verfahren zum Bearbeiten eines Werkstückes
WO2012043005A1 (fr) 2010-09-30 2012-04-05 本田技研工業株式会社 Dispositif de poinçonnage de pièce, procédé de poinçonnage de pièce, et procédé de production d'un élément pour transmission à variation continue
CN108213303B (zh) * 2018-01-30 2018-11-23 二重（德阳）重型装备有限公司 模锻压机行程补偿方法
CN108994102B (zh) * 2018-07-24 2019-09-13 哈尔滨工业大学 一种脉冲电流辅助坯料中空分流微成形模具及方法
CH716048B1 (de) * 2019-04-09 2024-02-15 Dietmar Kramer Dr Sc Techn Eth Phd Verfahren sowie eine Messeinrichtung zum Ausmessen von Utensilien für Pressen.

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP1123169B1 (fr) * 1998-10-19 2003-06-11 Mika Virtanen Centre de fabrication de tole et procedes utilises dans ce centre pour la fabrication optimale de toles a travailler
WO2004037482A1 (fr) * 2002-10-28 2004-05-06 Amada Company, Limited Outil a tarauder, procede de taraudage et presse a poinçonner

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DE284903C (fr)
GB1195632A (en) 1968-01-25 1970-06-17 Vero Prec Engineering Ltd Improvements in Numerically Controlled Machine Tools
DE3840395C2 (de) * 1987-12-04 1998-12-03 Amada Co Steuerung einer Blechbearbeitungspresse
JP2891363B2 (ja) 1989-03-10 1999-05-17 株式会社アマダ プレス加工中における板厚、抗張力検出方法及び装置
JP4592136B2 (ja) 2000-01-17 2010-12-01 株式会社アマダ 板材加工方法及び板材加工システム

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1123169B1 (fr) * 1998-10-19 2003-06-11 Mika Virtanen Centre de fabrication de tole et procedes utilises dans ce centre pour la fabrication optimale de toles a travailler
WO2004037482A1 (fr) * 2002-10-28 2004-05-06 Amada Company, Limited Outil a tarauder, procede de taraudage et presse a poinçonner

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2092994A1 (fr) * 2008-02-22 2009-08-26 Trumpf Werkzeugmaschinen GmbH + Co. KG Machine-outil destinée à la coupe et/ou au formage de pièces à usiner en plaques
US8201432B2 (en) 2008-02-22 2012-06-19 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Plate workpiece processing with interchangeable tools
EP2602035A1 (fr) * 2011-12-06 2013-06-12 Ray Arbesman Appareil de texturation de la surface d'une plaque de frein
US9199322B2 (en) 2011-12-06 2015-12-01 Nucap Industries Inc. Apparatus for texturing the surface of a brake plate
EP3045239A1 (fr) * 2011-12-06 2016-07-20 Nucap Industries Inc. Appareil de texturation de la surface d'une plaque de frein et procédé utilisant le même
US9623477B2 (en) 2011-12-06 2017-04-18 Nucap Industries Inc. Apparatus for texturing the surface of a brake plate
US9908172B2 (en) 2011-12-06 2018-03-06 Nucap Industries Inc. Apparatus for texturing the surface of a brake plate
US10160035B2 (en) 2011-12-06 2018-12-25 Nucap Industries Inc. Apparatus for texturing the surface of a brake plate
CN103100582A (zh) * 2013-03-12 2013-05-15 福安市启航自动化科技有限公司 毛坯件在冲压模具内放置位置的光电检测方法和检测装置
CN104209370B (zh) * 2014-09-30 2016-08-24 宁波固安力机械科技有限公司 冲床的冲孔检测装置

Also Published As

Publication number Publication date
PL1625901T3 (pl) 2008-10-31
EP1625901B1 (fr) 2008-05-07
ATE394180T1 (de) 2008-05-15
US7168277B2 (en) 2007-01-30
JP2006051544A (ja) 2006-02-23
JP4751128B2 (ja) 2011-08-17
ES2305629T3 (es) 2008-11-01
DE502004007062D1 (de) 2008-06-19
US20060032283A1 (en) 2006-02-16

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