EP3115191A1 - Procédé et dispositif de réduction du choc de coupe dans une presse de découpage fin - Google Patents

Procédé et dispositif de réduction du choc de coupe dans une presse de découpage fin Download PDF

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Publication number
EP3115191A1
EP3115191A1 EP15002037.8A EP15002037A EP3115191A1 EP 3115191 A1 EP3115191 A1 EP 3115191A1 EP 15002037 A EP15002037 A EP 15002037A EP 3115191 A1 EP3115191 A1 EP 3115191A1
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EP
European Patent Office
Prior art keywords
pressure
main piston
pressure chamber
hydraulic
valve
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
EP15002037.8A
Other languages
German (de)
English (en)
Other versions
EP3115191B1 (fr
Inventor
Hans-Ruedi Honegger
Andreas Dipl.-Ing. Walther
Alex Wehrli
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.)
Feintool International Holding AG
Original Assignee
Feintool International Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Feintool International Holding AG filed Critical Feintool International Holding AG
Priority to ES15002037T priority Critical patent/ES2839075T3/es
Priority to EP15002037.8A priority patent/EP3115191B1/fr
Priority to CN201610525666.8A priority patent/CN106334745B/zh
Priority to JP2016133065A priority patent/JP6815106B2/ja
Priority to KR1020160084622A priority patent/KR102333501B1/ko
Priority to US15/203,404 priority patent/US10500628B2/en
Publication of EP3115191A1 publication Critical patent/EP3115191A1/fr
Application granted granted Critical
Publication of EP3115191B1 publication Critical patent/EP3115191B1/fr
Active 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/20—Applications of drives for reducing noise or wear
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • 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
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/0076—Noise or vibration isolation means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/16—Control arrangements for fluid-driven presses
    • B30B15/22—Control arrangements for fluid-driven presses controlling the degree of pressure applied by the ram during the pressing stroke

Definitions

  • the invention relates to a method for reducing the cutting stroke in a finished with a hydraulic main fineblanking press, in which a guided in a master cylinder space of the foot piece, carrying a table top main piston performs a reciprocating motion in rapid traverse between UT and OT and in the power stroke, the cutting or forming operation, wherein the pressure chambers of the main piston are subjected to a predetermined by a central control and generated by a hydraulic pump unit working pressure of a hydraulic fluid from a hydraulic system.
  • the invention further relates to a device for carrying out the method, with a arranged in the foot of a hydraulically driven fineblanking press Main cylinder space, in which the pressure chambers with hydraulic fluid acted upon, a lifting movement between UT and TDC in the direction Hubachse exporting and a table top carrying main piston / plunger is guided, and at least one hydraulic pump unit comprehensive hydraulic system for supplying the pressure chambers with the to a predetermined working pressure hydraulic fluid adjusted by a central control.
  • the cutting blow to presses and its causes are well known.
  • the cutting process is known to split into a clamping process in which the sheet material to be cut between the cutting plate and hold-down (guide plate) is clamped and then the cutting die touches the sheet material, a biasing process in which the cutting system of sheet material, cutting tool and press until reaching elastic the yield point is biased, a plastic forming process in which the sheet material is work hardened to a maximum value with increase of the cutting force and breaks the sheet material after reaching the limit of Umformzis cracking, a separation process in which the cut part separated from the sheet material, the cutting force drops abruptly and the potential energy stored in the system is released, whereby tool and press are suddenly relieved in the form of cutting impact, and release of elastic stresses, which leads to a springback of the material in the region of Sc and lead to wear of the punch and cutting plate.
  • From the DE 43 08 344 A1 is a method for controlling the drive of a hydraulic press for forming and / or cutting of sheets o.
  • Known which comprises at least one double-acting piston cylinder unit for driving a press ram, wherein the drive piston is acted upon by means of a hydraulic medium in the sense of a displacement. It is one provided the maximum working pressure hydraulic accumulator unit which supplies the piston of the piston-cylinder unit on both sides with hydraulic medium of the same pressure.
  • the known drive has a double-acting cylinder whose piston has an effective in the entry direction first working surface and an extension direction effective second working surface, each delimiting a pressure chamber, wherein for retracting and extending the piston in and out of the working cylinder on at least one of the work surfaces at least two different pressures can be switched by means of an actuator.
  • the hydraulic drive has an actuating unit which selectively enables a throttled backflow of hydraulic medium from the first pressure chamber delimited by the first working surface, the drive having control means with which the actuating unit can be actuated during or before a sudden acceleration of the piston due to its sudden release of force is that occurs by a directly or indirectly caused by the actuator throttling the back flow of hydraulic medium from the first pressure chamber, a hydraulic damping of the movement of the piston.
  • beats DE 10 2006 039 463 A1 To reduce the cutting stroke by two different opposing forces during a cutting operation within a closed hydraulic system Forces acting on the plunger, which are switched depending on the ram travel.
  • the present invention seeks to provide a method and apparatus of the type mentioned in fineblanking presses with which the force required for the cutting impact reduction force can be generated as a counterforce directly in the pressure chamber of the drive piston, so that the opposing force directly acts on the punch and simplifies the structure of the press, saving costs, eliminating the need for additional external hydraulic-mechanical means for cutting impact reduction and the loads on the press and the tool can be reduced.
  • reaction force can be adjusted particularly sensitively and precisely to the size of the cutting stroke by the pressure regulation in the first pressure chamber as a function of the working pressure in the second pressure chamber.
  • the working pressure in the second pressure chamber of the main piston at the power stroke with the central control via a controllable proportional valve, at least one pressure sensor for pressure detection, at least one pressure relief valve for limiting the pressure of the flow and a proportional valve for the delivery volume and the hydraulic pump unit is adjusted.
  • the TDC position of the main piston is controlled with the central control so that the delivery volume of the hydraulic pump unit is controlled back before reaching the TDC.
  • the object is further achieved by a device of the type mentioned above in that the main piston discususionnartig projecting work surfaces, the annular space in the master cylinder space above each other the first and second pressure chamber with a small stroke, each separate for detecting the pressure in the pressure chambers with the central Associated with a proportional valve via a pressure-controlled 4/3-way proportional valve for limiting the pressure of a tank valve and an amplifier, and that the main piston connected to the central control path-measuring unit for detecting the OT Position of the main piston is assigned.
  • a further advantageous embodiment of Device according to the invention provides that the second pressure chamber of the main piston is connected to a collecting tank via a controlled cartridge valve, at least one pressure sensor for pressure detection, at least one pressure relief valve for limiting the pressure of the flow for adjusting the flow rate with the hydraulic pump unit and the first pressure chamber via the tank valve ,
  • the main piston has the same or different sized work surfaces, whereby both constant velocity piston and other pistons can be used depending on the application.
  • the proportional valves are pressure-controlled cartridge valves, which can be used in the power stroke and the bypass channel and are easy to install.
  • the hydraulic pump unit comprises at least the proportional valve for adjusting the flow rate, at least the pressure transducer for controlling the proportional valve and at least the pressure relief valve for limiting the pressure of the flow.
  • the Fig. 1 shows the course of the cutting force in the shear cutting of a full-edged workpiece according to the prior art ( R.-A. Schmidt, "Forming and Fineblanking", Carl Hanser-Verlag, 2007, pp. 144-157 ). Thereafter, the cutting operation first undergoes a range of elastic deformation of the material (section I) and of the press frame in which the cutting force F s increases linearly without plastic deformation of the material occurring. With the further penetration of the stamp in the material, the material begins to flow plastically, the Cutting force F s further increases (area II).
  • the Fig. 2 shows in perspective view a hydraulically driven fineblanking press 1, the main drive 2 basically allows a stroke movement between a bottom dead center UT and a top dead center OT in the direction of stroke axis HU from bottom to top.
  • the press frame 3 of the press 1 comprises a head piece 4, a foot piece 5, box-shaped hollow columns 6 and tie rods 7.
  • the main drive 2 is supplied via hydraulic lines 41 by a hydraulic system 24 with hydraulic fluid.
  • a table top 8 is arranged on the upper side OS of the foot piece 5, which carries the lower tool part, not further shown.
  • a Schnellhubkolben whose piston rod 10 is connected to a carrier 11 which is fixed to a side wall 12 of the table top 8, so that the table top 8 with Tool lower part can be lifted at high speed in the direction of TDC or lowered in direction UT.
  • Fig. 4a . 4b and 5 show the spatial position of the fluid channels 19a to 19h and the discharge channel 33 in the foot piece 5 in a transparent representation and in section along the line AA Fig. 3 ,
  • a master cylinder space 13 is formed, whose axis HA lies on the lifting axis HU of the fineblanking press and receives the double-acting main piston 14.
  • the main piston 14 has a cylindrical shaft 15 which has disk-like top and bottom working surfaces 16a and 16b perpendicular to the axis HA, dividing the master cylinder space 13 into a first (upper) pressure space 17a and a second (lower) pressure space 17b with low lift height. so that the foot 5 is compact and has a low height.
  • the master cylinder chamber 13 and thus the upper pressure chamber 17 a is pressure-tightly sealed by a cover 18, which is fastened to the foot piece 5.
  • the lid 18 is formed so that it also forms a fixed stop 42 for the working surface 16a at top dead center TDC.
  • first (upper) fluid channels 19a, 19b, 19c and 19d and second (lower) fluid channels 19e, 19f, 19g and 19h are connected to the fluid channels 19e to 19h by a respective bypass channel 20.
  • a pressure-controlled proportional valve 21a, 21b, 21c, and 21d is employed as the cartridge valve which closes the respective bypass passage 20 when the hydraulic pressure of the second pressure chamber 17b is applied.
  • the lower fluid channel 19e is connected to a feed channel 23 lying parallel to the stroke axis HU in the foot piece 5 and to a branch channel 25 which leads away from the latter and via which the hydraulic system 24 (not further shown) is connected.
  • the first pressure chamber 17a opens a discharge channel 33, in which a tank valve 26 is used to open and close the discharge channel 33 as a cartridge valve.
  • the tank valve 26 is in the open position when the hydraulic fluid in the first pressure chamber 17a is displaced in the power stroke.
  • a path-measuring unit 28 for example in the form of an eddy current sensor, is assigned to the main piston 14.
  • the distance measuring unit 28 may be arranged along the first (upper) pressure chamber 17a in the foot piece 5. But it is also possible, the way-measuring unit 28 along the shaft 15 to position without departing from the invention. The only important thing is that the position data of the main piston 14 can be permanently detected during its stroke movement in the direction of TDC.
  • the path measuring unit 28 transfers the position data to the central controller 29 for further processing.
  • Fig. 6 shows the hydraulic train 30 for the power stroke of the main piston 14 and the hydraulic train 31 for the cutting impact control.
  • the Hydrauklikstrang 30 for the power stroke comprises a hydraulic pump unit 32, the at least one proportional valve for adjusting the flow rate, at least one pressure relief valve 34 for limiting the pressure of the flow and at least one pressure sensor 35 for pressure detection for power limitation and passing the pressure value to the central controller 29 for controlling the Pressure control valve 34 is assigned, a controlled cartridge valve 36, which releases the hydraulic fluid supplied to the second (lower) pressure chamber 17 b for the power stroke, a pressure sensor 37 for permanent detection of the working pressure P U in the second (lower) pressure chamber 17 b and the pressure chambers 17 a and 17b of the main piston 14th
  • the hydraulic train 31 includes the proportional valve 21a to 21d inserted in the fluid channels 19e to 19d which opens or closes the relief passage 33, a pressure transducer 38 associated with the first (upper) pressure chamber 17a for permanent detection of the working pressure P O in the first (upper) pressure chamber 17a who the sends detected pressure values to the central controller 29 for processing, an operational amplifier 39 connected to both the pressure transducer 37 for the second (lower) pressure chamber 17b and the pressure transducer 38 for the first (upper) pressure chamber 17a and with a pressure-controlled 4/3 Path proportional valve 40 is connected, which keeps a tank valve 26 in the power stroke open or pressure controlled open.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Punching Or Piercing (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)
EP15002037.8A 2015-07-06 2015-07-06 Procédé et dispositif de réduction du choc de coupe dans une presse de découpage fin Active EP3115191B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES15002037T ES2839075T3 (es) 2015-07-06 2015-07-06 Procedimiento y dispositivo para reducir el impacto de corte en una prensa de corte de precisión
EP15002037.8A EP3115191B1 (fr) 2015-07-06 2015-07-06 Procédé et dispositif de réduction du choc de coupe dans une presse de découpage fin
CN201610525666.8A CN106334745B (zh) 2015-07-06 2016-07-05 用于在精冲压力机中降低冲裁冲击的方法和装置
JP2016133065A JP6815106B2 (ja) 2015-07-06 2016-07-05 精密打抜プレス内における切断衝撃の減少のための装置及び方法
KR1020160084622A KR102333501B1 (ko) 2015-07-06 2016-07-05 정밀 블랭킹 프레스에서 절단 충격을 감소시키기 위한 방법 및 장치
US15/203,404 US10500628B2 (en) 2015-07-06 2016-07-06 Method and apparatus for reducing cutting impact in a precision blanking press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15002037.8A EP3115191B1 (fr) 2015-07-06 2015-07-06 Procédé et dispositif de réduction du choc de coupe dans une presse de découpage fin

Publications (2)

Publication Number Publication Date
EP3115191A1 true EP3115191A1 (fr) 2017-01-11
EP3115191B1 EP3115191B1 (fr) 2020-11-18

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EP15002037.8A Active EP3115191B1 (fr) 2015-07-06 2015-07-06 Procédé et dispositif de réduction du choc de coupe dans une presse de découpage fin

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US (1) US10500628B2 (fr)
EP (1) EP3115191B1 (fr)
JP (1) JP6815106B2 (fr)
KR (1) KR102333501B1 (fr)
CN (1) CN106334745B (fr)
ES (1) ES2839075T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3666411A1 (fr) 2018-12-13 2020-06-17 Lapmaster Wolters GmbH Presse de découpage fin et procédé de fonctionnement d'une presse de découpage fin
EP3725502A1 (fr) 2019-04-18 2020-10-21 Lapmaster Wolters GmbH Procédé de fonctionnement d'un système de découpage fin
EP3736061A1 (fr) 2019-05-06 2020-11-11 Lapmaster Wolters GmbH Système de découpage fin et son procédé de fonctionnement
EP3831590A1 (fr) 2019-12-05 2021-06-09 Lapmaster Wolters GmbH Coulisseau de presse pour presse de découpage fin

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108555106A (zh) * 2018-06-08 2018-09-21 中山市新泰五金制品有限公司 一种油压缓冲气垫

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DE2512822A1 (de) 1975-03-22 1976-09-30 Horst Schenk Vorrichtung zur schnittschlagdaempfung in pressen
DE2248024B2 (de) 1972-09-29 1976-12-09 L. Schuler GmbH, 7320 Göppingen Schnittschlag-daempfungseinrichtung an schnitt-pressen
DE2350378B2 (de) 1973-10-08 1977-03-24 L. Schuler GmbH, 7320 Göppingen Schnittschlagdaempfungseinrichtung an pressen
DE2653714C2 (de) 1976-11-26 1978-11-09 Frieseke & Hoepfner Gmbh, 8520 Erlangen Schnittschlagdämpfungseinrichtung für Stanzpressen
DE2621726C2 (de) 1976-05-15 1978-12-07 L. Schuler Gmbh, 7320 Goeppingen Schnittschlagdämpfungseinrichtung an Pressen
JPS58110200A (ja) * 1981-12-24 1983-06-30 Sanesu Shoko:Kk プレス機械の制御方法
JPS60162599A (ja) * 1984-01-31 1985-08-24 Amada Co Ltd 液圧プレスにおける打抜き加工の制御方法
JPS60244500A (ja) * 1984-05-18 1985-12-04 Aida Eng Ltd 騒音及び振動を抑制する液圧プレス
DE2824176C2 (fr) 1978-06-02 1988-04-14 Thyssen Industrie Ag, 4300 Essen, De
DE4308344A1 (de) 1993-03-16 1994-09-22 Mueller Weingarten Maschf Verfahren zur Regelung des Antriebs einer hydraulischen Presse und Vorrichtung zur Durchführung des Verfahrens
DE10339004B4 (de) 2003-08-25 2006-09-28 Wieber, Christian, Dipl.-Ing.(FH), Batu Caves Hydraulische Presse
DE102005053350A1 (de) 2005-11-07 2007-05-10 Schuler Pressen Gmbh & Co. Kg Presse mit Schnittschlagdämpfung
DE102006039463A1 (de) 2006-08-23 2008-02-28 Müller Weingarten AG Verfahren und Vorrichtung zur Schnittschlagdämpfung
DE10252625B4 (de) 2001-11-14 2008-09-04 Schuler Pressen Gmbh & Co. Kg Presse mit Schnittschlagreduzierung
DE102007027603A1 (de) 2007-06-12 2008-12-18 Voith Patent Gmbh Hydraulischer Antrieb, insbesondere für Werkzeugmaschinen, und Verfahren zum Steuern des hydraulischen Antriebs

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Publication number Priority date Publication date Assignee Title
DE2248024B2 (de) 1972-09-29 1976-12-09 L. Schuler GmbH, 7320 Göppingen Schnittschlag-daempfungseinrichtung an schnitt-pressen
DE2350378B2 (de) 1973-10-08 1977-03-24 L. Schuler GmbH, 7320 Göppingen Schnittschlagdaempfungseinrichtung an pressen
DE2512822A1 (de) 1975-03-22 1976-09-30 Horst Schenk Vorrichtung zur schnittschlagdaempfung in pressen
DE2621726C2 (de) 1976-05-15 1978-12-07 L. Schuler Gmbh, 7320 Goeppingen Schnittschlagdämpfungseinrichtung an Pressen
DE2653714C2 (de) 1976-11-26 1978-11-09 Frieseke & Hoepfner Gmbh, 8520 Erlangen Schnittschlagdämpfungseinrichtung für Stanzpressen
DE2824176C2 (fr) 1978-06-02 1988-04-14 Thyssen Industrie Ag, 4300 Essen, De
JPS58110200A (ja) * 1981-12-24 1983-06-30 Sanesu Shoko:Kk プレス機械の制御方法
JPS60162599A (ja) * 1984-01-31 1985-08-24 Amada Co Ltd 液圧プレスにおける打抜き加工の制御方法
JPS60244500A (ja) * 1984-05-18 1985-12-04 Aida Eng Ltd 騒音及び振動を抑制する液圧プレス
DE4308344A1 (de) 1993-03-16 1994-09-22 Mueller Weingarten Maschf Verfahren zur Regelung des Antriebs einer hydraulischen Presse und Vorrichtung zur Durchführung des Verfahrens
DE10252625B4 (de) 2001-11-14 2008-09-04 Schuler Pressen Gmbh & Co. Kg Presse mit Schnittschlagreduzierung
DE10339004B4 (de) 2003-08-25 2006-09-28 Wieber, Christian, Dipl.-Ing.(FH), Batu Caves Hydraulische Presse
DE102005053350A1 (de) 2005-11-07 2007-05-10 Schuler Pressen Gmbh & Co. Kg Presse mit Schnittschlagdämpfung
DE102006039463A1 (de) 2006-08-23 2008-02-28 Müller Weingarten AG Verfahren und Vorrichtung zur Schnittschlagdämpfung
DE102007027603A1 (de) 2007-06-12 2008-12-18 Voith Patent Gmbh Hydraulischer Antrieb, insbesondere für Werkzeugmaschinen, und Verfahren zum Steuern des hydraulischen Antriebs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
R.-A. SCHMIDT: "Umformen und Feinschneiden", 2007, CARL HANSER-VERLAG, pages: 144 - 157

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3666411A1 (fr) 2018-12-13 2020-06-17 Lapmaster Wolters GmbH Presse de découpage fin et procédé de fonctionnement d'une presse de découpage fin
EP3666410A1 (fr) 2018-12-13 2020-06-17 Lapmaster Wolters GmbH Presse de découpage fin et procédé de fonctionnement d'une presse de découpage fin
US11878335B2 (en) 2018-12-13 2024-01-23 Lapmaster Wolters Gmbh Fine blanking press and method for operating the same
EP3725502A1 (fr) 2019-04-18 2020-10-21 Lapmaster Wolters GmbH Procédé de fonctionnement d'un système de découpage fin
US11331711B2 (en) 2019-04-18 2022-05-17 Lapmaster Wolters Gmbh Method for operating a fine blanking system
EP3736061A1 (fr) 2019-05-06 2020-11-11 Lapmaster Wolters GmbH Système de découpage fin et son procédé de fonctionnement
US11779988B2 (en) 2019-05-06 2023-10-10 Lapmaster Wolters Gmbh Fine blanking system and method of operating
EP3831590A1 (fr) 2019-12-05 2021-06-09 Lapmaster Wolters GmbH Coulisseau de presse pour presse de découpage fin
US11642716B2 (en) 2019-12-05 2023-05-09 Lapmaster Wolters Gmbh Press ram for a fine blanking press

Also Published As

Publication number Publication date
KR102333501B1 (ko) 2021-12-01
US20170129000A1 (en) 2017-05-11
JP6815106B2 (ja) 2021-01-20
ES2839075T3 (es) 2021-07-05
JP2017013132A (ja) 2017-01-19
CN106334745B (zh) 2019-06-21
KR20170005767A (ko) 2017-01-16
US10500628B2 (en) 2019-12-10
CN106334745A (zh) 2017-01-18
EP3115191B1 (fr) 2020-11-18

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