EP2921240A1 - Outil pour une poinçonneuse universelle avec un élément d'outil flottant et poinçonneuse universelle - Google Patents

Outil pour une poinçonneuse universelle avec un élément d'outil flottant et poinçonneuse universelle Download PDF

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Publication number
EP2921240A1
EP2921240A1 EP15156922.5A EP15156922A EP2921240A1 EP 2921240 A1 EP2921240 A1 EP 2921240A1 EP 15156922 A EP15156922 A EP 15156922A EP 2921240 A1 EP2921240 A1 EP 2921240A1
Authority
EP
European Patent Office
Prior art keywords
tool
centering
insert
processing
machining
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
EP15156922.5A
Other languages
German (de)
English (en)
Other versions
EP2921240B1 (fr
Inventor
Markus Hees
Oliver Steidle
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
Application filed by Trumpf Werkzeugmaschinen SE and Co KG filed Critical Trumpf Werkzeugmaschinen SE and Co KG
Publication of EP2921240A1 publication Critical patent/EP2921240A1/fr
Application granted granted Critical
Publication of EP2921240B1 publication Critical patent/EP2921240B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • 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
    • B21D43/003—Positioning devices
    • 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
    • B21D28/04—Centering the work; Positioning the tools
    • 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
    • B21D28/12—Punching using rotatable carriers
    • B21D28/125—Punching using rotatable carriers with multi-tools
    • 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
    • B21D28/34—Perforating tools; Die holders
    • 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
    • B21D37/04—Movable or exchangeable mountings for tools
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/10—Die sets; Pillar guides
    • B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • 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
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template

Definitions

  • the invention relates to a tool for a universal punching machine, in particular a tool for a universal machine, which allows a very small cutting gap.
  • Fast-releasing punches or presses are known in which follow-on composite tools are used.
  • a component with a predetermined manufacturing progress is produced.
  • An upper tool and a lower tool of the progressive tool are therefore usually connected to each other with column guides, so that a high accuracy of the machining inserts in the upper tool and the lower tool can be achieved by a stable design of the tool.
  • the workpiece is fed here in the form of a strip which is introduced between the column guides.
  • the invention is based on the object to provide a tool for a universal punching machine, which does not have the above disadvantages, and which allows with little effort, a great flexibility and high accuracy between the machining inserts in the upper tool and the lower tool.
  • a punching machine 1 is shown with a tool 2 according to the invention.
  • a component of the punching machine 1 is here a C-frame 3.
  • the C-frame 3 consists of a torsionally rigid Welded steel construction.
  • the frame can also be executed in a different form.
  • a hydraulic unit 4 is provided, with which a plunger 5 is hydraulically driven via a plunger control 6.
  • the punching machine 1 has an axis 7, which is the center axis of a lower tool holder 9 and the plunger 5 with an upper tool holder 8.
  • the lower tool holder 9 is on the lower inside of the C-frame 3 for the positive and play-free receiving a lower tool 10, which is a tool part of the tool 2, is provided.
  • the lower tool holder 9 is optionally rotatable about a rotary drive, not shown, and lockable in any angular position.
  • the lower tool holder 9 optionally has a drive which moves the lower tool holder 9 along the axis 7. The drive can be controlled so that it stops at any position within its drive path, and then moves backwards or forwards.
  • the plunger 5 is provided on the upper inside of the C-frame 3.
  • the plunger 5 with the upper tool holder 8 receives a top tool 11 as a tool part of the tool 2 positively and without play.
  • the plunger 5 is also optionally rotatable and can be detected in any angular position. For a second, not shown rotary drive is available. Also, the plunger 5, driven by the plunger control 6, be stopped at any position within its stroke along the axis 7, and then moved up or down.
  • the control device 12 has as input and output means a keyboard, not shown, and a monitor, not shown.
  • the control functions are performed by microcontrollers. Processing programs and operating parameters are stored in a memory area of the control device 12.
  • a machine table 13 On the lower inside of the C-frame 2, a machine table 13 is arranged, which has a cross rail 14 with a tool magazine 15. At the cross rail 14 clamping claws 16 are arranged for holding a workpiece 17 in the form of a metal plate. The clamping claws 16 may be secured at suitable locations on the cross rail 14, and may be displaced so that the workpiece 17 is held securely, but the workpiece 17 is not gripped on a surface to be machined.
  • the tool magazine 15 are several, here three, tool holders 18 for several, here two, tools 2 available.
  • machining positions can be approached, so bring the workpiece 17 to a corresponding position at which a punching or forming process is performed. Due to a kinematic chain consisting of drive elements, motion transmission elements and guide elements, however, due to the system, a tolerance of the machining positions, but usually in an order of magnitude, so that a position accuracy of punching is sufficient, and allows sufficiently small cutting gaps.
  • FIG. 2 an embodiment of the tool 2 is shown.
  • the tool 2 has the lower tool 10 and the upper tool 11.
  • a first processing insert 19 is provided and in the upper tool 11, a second processing insert 21 is provided.
  • the first machining insert 19 is floating, meaning that it has a predetermined amount in the lower tool 10 for horizontal movement in all directions. Furthermore, the first processing insert is provided with two centering openings 20, 20 '. The first processing insert is provided here as a die with a bore 24.
  • the second machining insert 21 is fixedly attached to the upper tool 11.
  • two centering projections 22 are attached here to dip into the centering openings 20, 20 'and to center the first processing insert 19 to the second processing insert 21 when the upper tool 11 and the lower tool 10 are in a working position.
  • the centering projections 22 may alternatively be attached to another location of the upper tool 11 and are not necessarily attached to the second processing insert 21.
  • the second processing insert is provided here with a stamp 23. By an interaction of the punch 23 with the bore 24 in the first processing insert 19, it is possible to punch in the workpiece 17 a hole.
  • the centering projections 22 are here designed as cylindrical pins with a circular cross-section in the direction of centering.
  • the centering opening 20 is formed here as a bore with a circular cross-section.
  • the centering opening 20 ' has an elongated cross section in the centering direction in order to to avoid a static over-tuning of a centering device consisting of the centering projections and centering openings.
  • both centering openings are provided with a circular cross-section.
  • this embodiment is to produce with simpler operations, but it is necessary that the distance of the centering projections 22 then exactly the distance of the centering 20, 20 'corresponds, otherwise a distortion of the centering can occur when a required fit between the centering projections 22 and the centering openings 20, 20 'is not sufficient.
  • the upper tool are provided only with a centering projection and the lower tool only with a centering opening.
  • both the centering projection and the centering opening in the centering direction have an elongated, substantially rectangular cross-section. The elongated cross section creates a support length against rotation of the first processing insert to the second processing insert so that the position of the first processing insert is fixed to the second processing insert.
  • the first machining insert 19 is provided in the lower tool 10 and the second machining insert 21 is provided in the upper tool 11.
  • the assignment may also be different, so that the first floating processing insert 19 is provided in the upper tool 11 and the second processing insert 21 in the lower tool 10.
  • a tool 2 is shown in which both in the upper tool 10 a plurality of first processing inserts 19, 19 ', 19 “, 19'” and in the lower tool 11 a plurality of processing inserts 21, 21 ', 21 ", 21'", 21 "" are provided.
  • the first processing inserts 19, 19 ', 19 “, 19'”, 19 “” are also stored floating in the lower tool 10 here.
  • Each of the first processing inserts 19, 19 ', 19 “, 19'", 19 “” is also provided with centering openings 20 here.
  • the first processing inserts 19, 19 ', 19 “, 19'", 19 “” and the second processing inserts 21, 21 ', 21 “, 21'", 21 “” act together in the working position and form punching tools (processing inserts 19) 21) and forming tools (machining inserts 19 'with 21', 19 “with 21", 19 '"with 21'", 19 “” with 21 “").
  • Fig. 3 is, as mentioned above, also seen that the centering projections 22 are mounted in the second processing insert 21, but the Zentriervorsprüngen 22 a not on one of the second processing inserts 21 ', 21 ", 21'", 21 "", but directly to the Upper tool 11 are attached.
  • Fig. 4 the workpiece 17 is shown with the in Fig. 3 edited tool is edited. Here are the individual steps to recognize.
  • steps I, II an outer developed shape and two U-shaped cut-outs of a product, in this case a contact tab, are punched with punches 23 with the aid of the punching tool formed from the processing inserts 19, 21.
  • a third step III the U-shaped punched out using the processing inserts 19 ', 21' deformed down.
  • steps IV, V, VI the product is then gradually transformed and brought into the final form.
  • the distances of the machining inserts in particular the distances of the active surfaces of the processing inserts 19, 19 ', 19 ", 19'", 19 “", 21, 21 ', 21 ", 21'", 21 “” for punching and forming each have an equal distance, so that the steps in the sense of a progressive tool can be performed.
  • Fig. 5 shows a cross section of the lower tool 10 and the upper tool 11 and the workpiece 17.
  • the first processing inserts 19, 19 ', 19 “, 19'", 19 “” are arranged so that their upper side is in each case essentially at the same level, but their height is different.
  • a down device 26 described later is optionally provided.
  • Fig. 6 the lower tool 10 is shown without the first processing inserts.
  • a recess is provided for the individual first processing inserts.
  • the recesses 25, 25 ', 25 “", 25 “”, 25 “” are disposed adjacent in a predetermined direction, and the recesses 25, 25', 25 “", 25 “”, 25 “”, as well as in FIG Fig. 5 you can see different depths. Further, the adjacent recesses 25, 25 ', 25 "", 25 “”, 25 “” have different dimensions in a horizontal direction perpendicular to the predetermined direction.
  • first Machining inserts 19, 19 ', 19 “, 19'", 19 “” directly next to each other without dividers to arrange, but in each case determine a certain extent for a floating movement in a horizontal plane.
  • first processing inserts 19, 19 ', 19 “, 19'", 19 “” and thus also the second processing inserts 21, 21 ', 21 “, 21'", 21 “” can be arranged closer and thus in the tool 2 with the same outer dimensions more processing inserts 19, 19 ', 19 “, 19'", 19 “", 21, 21 ', 21 ", 21'", 21 “” are provided.
  • tool 2 has the in Fig. 7 shown tool 2 on the hold-26.
  • the hold-down 26 is spring-mounted and presses the workpiece 17 during an upward movement of the upper tool 11 of the processing inserts 19, 19 ', which are formed as punching tools.
  • the hold-down 26 is resiliently attached to the upper tool 11.
  • the hold-down can also be attached to a corresponding device on the universal punching machine 1.
  • Fig. 8 are respectively a sectional view of the first processing insert 19 and the second processing insert 21 and therein already in Fig. 2 shown centering projections 22 and centering openings 20, 20 'shown enlarged.
  • the centering projections 22 and the centering openings 20, 20 'each have a cylindrical portion 27, 29, 29'.
  • the cylindrical Portions 27 of the centering projections have a first dimension in each horizontal direction, here a diameter d 1 , so that the first dimension is equal in each horizontal direction.
  • d 1 a diameter
  • these first dimensions are different.
  • the cylindrical portion 27 of the centering projection 22 is matched with the cylindrical portion 29 so that they can be introduced into each other in virtually any horizontal directions without play.
  • the cylindrical portion 29 'of the centering hole 20' is matched with the cylindrical portion 28 of the centering projection 20 so that in a horizontal direction movement of the centering projection 22 in the centering hole 20 is possible to avoid, as mentioned above, the static overdetermination.
  • the centering projections 22 furthermore each have a chamfer 28.
  • the chamfer 28 has at one end of the cylindrical portion 27 opposite a second dimension, namely here again a diameter d. 2
  • the centering openings 20, 20 ' also have a chamfer 30, 30' on an end facing the centering projections 27.
  • the cylindrical sections 29, 29 'of the centering openings 20, 20' have a third dimension in each horizontal direction, here a diameter d 3 .
  • the chamfer 30 has at its centering projections 27 facing the end in each horizontal direction, a fourth dimension, here a diameter d 4th
  • a sum of the difference between the first dimension d 1 and the second dimension d 2 and the difference between the third dimension d 3 and the fourth dimension d 4 in a given horizontal direction is at least as large as a maximum offset between the first machining insert and the second Machining application set.
  • the maximum offset between the first machining insert 19, 19 ', 19 “, 19", 19 “” and the second machining insert 21, 21', 21 “, 21 '", 21 “” becomes in the determined horizontal direction by the machining position tolerance the universal punching machine 1 and by a tolerance of the centering projection 22 in the upper tool 11 and an amount for a floating movement of the first processing insert 19, 19 ', 19 ", 19'", 19 “” in the lower tool 10.
  • chamfers are provided either only on the centering projections 22, 22a or only on the centering openings 20, 20 '.
  • the working position is approached via the cross rail 14, that is, the workpiece 17 is brought into a corresponding position, so that it is for its processing at a suitable location. Then, a working stroke is performed by means of the plunger 5 and a component punched or formed from the workpiece 17. If the working position at the edge of the workpiece 17, so that the centering projections 22, 22 a are located next to the workpiece 17, the working stroke is performed immediately.
  • the working position is located within the workpiece 17 such that the centering projections 22, 22a are not adjacent to the workpiece 17 are located or can dive in the working stroke through an already punched opening in the workpiece 17, an opening for dipping the centering projections 22, 22a is introduced through the workpiece 17 in advance.
  • the centering projections 22, 22 a of the upper tool 21, which dive through the workpiece 17, then enter the centering openings 20, 20 'of the lower tool 10 in order to center the first processing insert 19 to the second processing insert 21 exactly.
  • the openings in the workpiece 17 for the centering projections 22, 22a of the further machining inserts 19 ', 19 ", 19'", 19 “” are produced in a previously performed work step.
  • the centering projections 22, 22a for the individual processing inserts 19, 19 ', 19 “, 19'", 19 “” are arranged so that they pass through these openings.
  • the universal punching machine 1 is provided in an alternative embodiment with an axially adjustable lower tool holder 9, this must be alternatively or in addition to the upper tool holder 8 in a position in which the lower tool received therein does not project into a plane of movement of the workpiece 17, so that the workpiece movement state of the universal punching machine is present.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Drilling And Boring (AREA)
  • Automatic Assembly (AREA)
EP15156922.5A 2014-03-20 2015-02-27 Outil pour une poinçonneuse universelle avec un élément d'outil flottant et poinçonneuse universelle Active EP2921240B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014205249.1A DE102014205249B4 (de) 2014-03-20 2014-03-20 Werkzeug für eine Universalstanzmaschine, Universalstanzmaschine mit einem solchen Werkzeug sowie Verfahren zum Betreiben einer Universalstanzmaschine mit einem solchen Werkzeug

Publications (2)

Publication Number Publication Date
EP2921240A1 true EP2921240A1 (fr) 2015-09-23
EP2921240B1 EP2921240B1 (fr) 2016-09-07

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Family Applications (1)

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EP15156922.5A Active EP2921240B1 (fr) 2014-03-20 2015-02-27 Outil pour une poinçonneuse universelle avec un élément d'outil flottant et poinçonneuse universelle

Country Status (3)

Country Link
EP (1) EP2921240B1 (fr)
CN (1) CN104923682B (fr)
DE (1) DE102014205249B4 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3533597A1 (fr) * 2018-02-23 2019-09-04 Fritz Stepper GmbH & Co. KG Dispositif d'usinage d'au moins une pièce à usiner
EP4260959A4 (fr) * 2021-02-12 2024-06-05 Asahi-Seiki Manufacturing Co., Ltd. Mécanisme de support de matrice, dispositif de production de pièce cylindrique et machine de presse de transfert

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109789471B (zh) * 2016-09-26 2022-02-11 通快机床两合公司 用于切割和/或成型板状的工件的工具和机床以及方法

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DE19751238A1 (de) * 1997-11-19 1999-05-27 Feintool Int Holding Vorrichtung zum Herstellen eines Werkstückes durch Stanzen
US20050262919A1 (en) * 2004-05-27 2005-12-01 Krish Joseph J Sr Die assembly having floating die section
DE102005007215A1 (de) * 2005-02-16 2006-08-24 Feintool International Management Ag Vorrichtung zum Bearbeiten eines Werkstückes
DE202009004014U1 (de) * 2009-03-25 2009-06-04 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Stanzwerkzeug und Werkzeugmaschine damit
DE202009008413U1 (de) * 2009-06-16 2009-09-10 Dold Kaltfließpressteile GmbH Werkzeugsystem für eine Umformpresse

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CN201172086Y (zh) * 2007-04-11 2008-12-31 天津市津荣天和机电有限公司 新型精冲模具
ATE530308T1 (de) * 2009-07-31 2011-11-15 Groz Beckert Kg Stanzwerkzeug mit schwimmend gelagertem stempel
CN102284636B (zh) * 2011-06-13 2013-02-13 江苏金方圆数控机床有限公司 数控冲床的升降模座
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Publication number Priority date Publication date Assignee Title
DE19751238A1 (de) * 1997-11-19 1999-05-27 Feintool Int Holding Vorrichtung zum Herstellen eines Werkstückes durch Stanzen
US20050262919A1 (en) * 2004-05-27 2005-12-01 Krish Joseph J Sr Die assembly having floating die section
DE102005007215A1 (de) * 2005-02-16 2006-08-24 Feintool International Management Ag Vorrichtung zum Bearbeiten eines Werkstückes
DE202009004014U1 (de) * 2009-03-25 2009-06-04 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Stanzwerkzeug und Werkzeugmaschine damit
DE202009008413U1 (de) * 2009-06-16 2009-09-10 Dold Kaltfließpressteile GmbH Werkzeugsystem für eine Umformpresse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3533597A1 (fr) * 2018-02-23 2019-09-04 Fritz Stepper GmbH & Co. KG Dispositif d'usinage d'au moins une pièce à usiner
EP4260959A4 (fr) * 2021-02-12 2024-06-05 Asahi-Seiki Manufacturing Co., Ltd. Mécanisme de support de matrice, dispositif de production de pièce cylindrique et machine de presse de transfert

Also Published As

Publication number Publication date
DE102014205249A1 (de) 2015-09-24
CN104923682B (zh) 2019-03-08
CN104923682A (zh) 2015-09-23
EP2921240B1 (fr) 2016-09-07
DE102014205249B4 (de) 2017-11-16

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