EP2177290B1 - Procédé de définition d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées, tel ensemble d'outil de poinçonnage ainsi que machine de poinçonnage dotée d'un tel ensemble d'outil de poinçonnage - Google Patents

Procédé de définition d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées, tel ensemble d'outil de poinçonnage ainsi que machine de poinçonnage dotée d'un tel ensemble d'outil de poinçonnage Download PDF

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Publication number
EP2177290B1
EP2177290B1 EP20080018279 EP08018279A EP2177290B1 EP 2177290 B1 EP2177290 B1 EP 2177290B1 EP 20080018279 EP20080018279 EP 20080018279 EP 08018279 A EP08018279 A EP 08018279A EP 2177290 B1 EP2177290 B1 EP 2177290B1
Authority
EP
European Patent Office
Prior art keywords
die
punching
punch
tool set
cutting edge
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.)
Not-in-force
Application number
EP20080018279
Other languages
German (de)
English (en)
Other versions
EP2177290A1 (fr
Inventor
Wolfgang Laib
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
Priority to EP20120179637 priority Critical patent/EP2522443B1/fr
Priority to EP20080018279 priority patent/EP2177290B1/fr
Priority to JP2009236233A priority patent/JP5858595B2/ja
Priority to US12/579,812 priority patent/US8701532B2/en
Publication of EP2177290A1 publication Critical patent/EP2177290A1/fr
Application granted granted Critical
Publication of EP2177290B1 publication Critical patent/EP2177290B1/fr
Priority to US14/220,576 priority patent/US9573182B2/en
Not-in-force 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
    • B21D37/08—Dies with different parts for several steps in a process
    • 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
    • B21D28/14—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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/246—Selection of punches
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49716—Converting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8733—Tool movable to cooperate selectively with one of a plurality of mating tools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9423—Punching tool

Definitions

  • the invention furthermore relates to a computer program product for carrying out said method and to a method for punching workpieces, in particular sheets.
  • the invention relates to a punching tool set and a punching machine for punching machining of workpieces, in particular sheets, and a machining program for operating a punching machine of the type mentioned.
  • JP 22 27353A discloses a punching device wherein, regardless of the amount of material removed from the punch and punching die, the width of the cutting gap between the die cutting edge and the punching cutting edge remains subdued.
  • EP 1 445 042 A1 discloses a punching device provided for punching sheet metal processing with a plurality of punching tool sets, each of which comprises a punch and a punching die.
  • the punch and the punching die of a punching tool set are permanently assigned to each other.
  • the punching tool sets which are to be used for an upcoming sheet metal processing are flexibly selectable. According to which criteria a punch and a punching die are combined to form a punching tool set is not specified.
  • DE 10 2006 049 044 Al relates to a punching tool for punching sheet metal processing, which comprises two opposite halves of sheet metal associated tool halves.
  • the one tool half has at least one processing device, the other tool half at least two counter devices.
  • the processing device may be a punch, the counter-devices may be punching dies. It is possible to assign the punch to different punching dies.
  • the punch assigned to this form a punching tool set for an upcoming sheet metal processing is carried out depending on the properties, such as the thickness of the sheet to be machined or depending on the machining contour to be created.
  • US 6,401,056 B1 discloses prior art and describes the acquisition of information about punches during tool life. Included are, among other things, regrinding operations on punching dies as well as the size-related development of the punching die height associated with the regrinding.
  • the acquired tool data is intended to enable the tool user in particular to determine the time at which a punching tool must be repaired or replaced.
  • stamping dies are generally used with a die opening whose wall extends below a so-called "clearance angle" with respect to the wall of the stamping punch dipping into the die opening.
  • the clearance angle is intended to ensure that the punched out material reliably leave the punching die and that the punch can return to its original position without hindrance after penetrating the workpiece to be machined and the associated immersion in the die opening of the punching die.
  • the free angle on stamping dies would be as large as possible.
  • Re-grinding of punching matrices is carried out in particular on the basis of signs of wear on the die cutting edge and is connected to the punching die with a material removal in the dipping direction of the punching punch. Due to the clearance angle, the material removal increases the cross section of the die opening Height of the die cutting edge ("die cutting edge cross-section") accompanied.
  • the die cutting edge cross section is decisive for the assignment of the punching die to a cooperating punch ("stamping punch assignment") or for the thickness of the workpiece which can be machined by means of the punching die and the punch punch associated therewith ("workpiece pallet assignment °) a punch with circular cross-section and a punching die with circular in cross-section die opening, ideally remains between the die cutting edge of the punch and the punch a Schneldspalt with a dependent on the thickness of material to be machined gap width example, in a 2 mm thick sheet a circular punch with a diameter 5 mm are introduced, so for this purpose a punching tool set is provided which comprises a round punch with a diameter of 5 mm and a punching die with a circular die opening asst, whose die cutting edge has a diameter of 5.2 mm.
  • the punching tool users are kept for individual processing tasks, such as a specific sheet thickness and a specific punch diameter, punching tool sets that are designed specifically for the respective machining task. Regrinding of the punching die of such a punching tool set, for example due to wear on the die cutting edge, is only provided to an extent in which the enlargement of the die cutting edge cross section associated with the regrinding of the quick dice does not lead to an engagement between the die cutting edge and the associated punch continues to give fast gap.
  • the object of the present invention is to extend the useful life of punching dies.
  • the change of the die cutting edge cross-section associated with the post-processing is taken into account when assembling a punching tool set from a punch and from a punching die produced by post-processing a predecessor punching die.
  • the die cutting edge cross section of the punching die (created by post processing) results from the change in the die cutting edge cross section associated with the postprocessing.
  • This "current" die cutting edge cross-section forms the basis for the punch stamp assignment and / or the workpiece thickness assignment of the punching die. It is conceivable that the punching die is assigned to a different punch than the predecessor punching die due to the post-processing and the associated material removal.
  • the punching die may have a different workpiece thickness than the precursor punching die be assigned. In any case, it is ensured that the post-processed, in particular the reground punching die is also used to assemble punching tool sets.
  • the cancellation according to the invention of a rigid bonding of punching dies to certain punches and / or to certain workpiece thicknesses results in a maximization of the service life of the punching dies.
  • the method according to the invention for defining punching tool sets is integrated into a method for punching machining of workpieces, in particular sheets.
  • the punching tools that are used for workpiece machining are first to be determined and installed on the punching device of the punching machine in question before the actual workpiece machining can be recorded.
  • the invention relates to a punching tool unit unit a punch and with a punching die, the stamping assignment and / or the workpiece thickness assignment is provided depending on the associated with a post-processing of the punching die change of Matrizen Schneldkantenqueriteses.
  • the meaning of this feature of the invention has been explained above in connection with claim 1.
  • the punching machine according to the invention (claim 13) makes use of a punching tool drawing set according to the invention.
  • the punching machine according to the invention is operated numerically controlled. If the machining program according to the invention runs on a numerical control of the punching machine, then the adjusting devices according to the invention and the lifting device according to the invention are controlled in the sense of the invention.
  • the change in the die cutting edge cross section associated with machining the precursor die may be of a different nature.
  • the reason for a change in the size of the die cutting edge cross-section caused by the post-processing can be a clearance angle under which the wall of the die opening runs on the predecessor punch die with respect to the wall of the punch piercing the die opening.
  • the punch stamp assignment and / or the workpiece thickness assignment of the punching die according to the invention is carried out as a function of the amount of the clearance angle (claim 3).
  • simple trigonometric functions can be from the clearance angle and from the height of the achieved during the post-processing in the dipping direction of the punch material removal with the post-processing determine the related dimensional change of the die cutting edge cross section. Based on the dimensional change, starting from the original size of the die cutting edge cross section, the size of the die cutting edge cross section which arises as a result of the reworking can be determined.
  • the inventive method for defining punching tool sets in a method for managing punching tools for punching machining of workpieces, in particular sheets is integrated.
  • Such an integration is particularly recommended in view of the fact that the tool data required for defining punching tool sets are also needed or provided elsewhere in a method for managing punching tools.
  • the inventive method for defining punch sets is used in setting up punching devices on punching machines.
  • it is first necessary to define the punching tool set with which the punching device is to be equipped.
  • the punching tool sets defined in the manner described are to be arranged on a punching device of the punching machine according to the invention, that they can perform the desired workpiece machining.
  • a tool holder is used for this purpose, on which the punching die and the punch of the previously defined punching tool set are arranged away from the punching device. Subsequently, the punching tool set is transferred by means of the tool holder to the punching device of the punching machine.
  • the material removal at the punching dies associated with the post-processing of the predecessor punching die is considered in a development of the invention. Due to the material removal, the height of the punch die measured in the direction of insertion of the punch decreases and the die cutting edge shifts accordingly. The height position of the die-cutting edge on the punch facing the top The punching die is important for workpiece machining in several respects. For example, the height of the die cutting edge is required in order to be able to measure the amount of the punching stroke to be executed by the punch.
  • the top side of the punching die does not protrude above a workpiece support on which the workpiece is mounted in the surroundings of the punching device, for example during subsequent movements which the workpiece performs between individual punching strokes relative to the punching device.
  • the above aspects are taken into account when setting up the punching device of a punching machine according to the invention by positioning the punching die on the punching device of the punching machine in the dipping direction of the associated punching punch depending on the height of the material removal carried out during the finishing operation (claim 10).
  • the setting device serves to position the punching punch assembly and the punching die relative to one another in such a way that the punching die and the punching punch of the defined punching tool set can cooperate with the relevant workpiece machining (claim 14).
  • the punching die is part of a punching die arrangement comprising a plurality of punching dies
  • the punching die arrangement on the one hand and the punching die of the defined punching tool set on the other hand are positioned such that the punching die of the defined punching tool set and the associated punch are functional (claim 15).
  • the height adjustment of the punching die on the punching device of the punching machine which is carried out as a function of the amount of material removal during the post-processing, is realized according to the invention by means of a corresponding lifting device of the punching machine (claims 16, 18).
  • Fig. 1 has a punching machine 1 for punching machining workpieces in the form of sheets 2, a C-shaped machine frame 3 with an upper frame leg 4 and a lower frame legs 5.
  • a conventional coordinate guide 7 is housed in a pharynx 6 of the machine frame 3.
  • this includes a transverse rail guide 8 and a transverse rail 9 guided thereon.
  • the transverse rail guide 8 can be moved together with the transverse rail 9 in the direction of a horizontal y-axis by means of a drive motor, not shown.
  • the cross rail 9 can be moved by means of a likewise not shown drive motor along the transverse rail guide 8 in the direction of a horizontal and thereby perpendicular to the y-axis extending x-axis.
  • cross rail 9 clamping claws 10 of conventional design for holding a sheet 2 are provided.
  • the cross rail 9 serves as a tool magazine.
  • 9 tool holders on the cross rail 11 removably attached.
  • a tool holder 11 is in Fig. 6 shown.
  • the punching station 12 is a Monostanzkopf. Accordingly, the punching station 12 includes tool bearings in the form of an upper tool holder 13 on the upper frame leg 4 and in the form of a lower tool holder 14 on the lower frame leg fifth
  • a punch 15 and in the lower tool holder 14 a punching die 16 are loaded into the upper tool holder 13. Together, the punch 15 and the punching die 16 form a punching tool set 17.
  • the punching die 16 is in detail in the FIGS. 2a, 2b, 2c shown.
  • Fig. 6 shows the punching die 16 in combination with the punch 15.
  • An electric rotary / lifting drive 18 of the punching machine 1 comprises an upper electrical rotary / lifting drive unit 19 and a lower electric rotary / lifting drive unit 20.
  • the punching tool which is inserted into the upper tool holder 13, in the present case the punch 15, along a running in the direction of a vertical z-axis lifting axis 21 and lowered and also rotated in a direction of rotation 22 illustrated by a double arrow about the lifting axis 21.
  • the punching die inserted into the lower tool holder 14, in this case the punching die 16 can be moved translationally along the lifting axis 21 by means of the lower rotary / lifting drive unit 20 and rotate about the lifting axis 21 in the direction of rotation 22.
  • FIGS. 2a, 2b is the punching die 16 of conventional design. It has a circular cutting edge 24 which in the illustrated case is circular, which in turn delimits a die opening 25 with a circular cross section.
  • the die opening 25 extends in the installed position on the punching machine 1 in the direction of the lifting axis 21. Along the lifting axis 21 of the punch 15 dives in the sheet metal processing in the die opening 25 a.
  • An arrow 26 points in FIG. 2b
  • the die cutting edge 24 of the punching die 16 and a corresponding circular punch cutting edge act under stamping processing of the sheet 2 concerned together in the punching sheet metal processing.
  • the die opening 25 widens in the dipping direction 26, forming a clearance angle ⁇ , which is greatly oversubscribed. Accordingly, the die opening 25 has a frusto-conical shape.
  • the clearance angle ⁇ is to ensure that punched slugs which are punched out of a machined sheet 2 by means of the die cutting edge 24 function reliably out of the punching die 16 at the bottom.
  • the punching die 16 has resulted by post-processing a predecessor punching die 16 'with a height h 0 .
  • the precursor punching die 16 ' was reground due to wear on the die cutting edge.
  • 26 material with an erosion height of ⁇ h was removed on the precursor punching die 16 'in the direction of insertion 26.
  • an increase of the die cutting edge cross-section or of the die cutting edge diameter from d 0 to d was associated with the material removal.
  • FIGS. 3a, 4a show the punching template assemblies 27, 28 in section along the in the FIGS. 3b, 4b indicated cutting lines.
  • each ten punching dies 27/1 ... 27/10 or 28/1 ... 28/10 are integrated. Each of them has a die opening 25 with a die cutting edge 24 of the FIGS. 2a, 2b, 2c
  • the die opening 25 of each punching die 27/1 ... 27/10, 28/1 ... 28/10 forms a clearance angle ⁇ .
  • the punching die arrangements 27, 28 are as far as possible identical. The only constructive difference is an elevation of the punching die assembly 28 relative to the punching die assembly 27. Thus, the punching die assembly 28 provides a larger regrinding reserve.
  • the course of the lifting axis 21, which simultaneously represents a rotation axis, is in the FIGS. 3a, 3b and 4a, 4b indicated.
  • the die openings 25 of the punching dies 27/1 ... 27/10, 28/1 ... 28/10 are arranged with their centers on a circular arc about the lifting or rotation axis 21.
  • the punching die 16 are in accordance with FIGS. 2a, 2b, 2c and the punching dies 27/1 ... 27/10 and 28/1 ... 28/10 according to the FIGS. 3a, 3b and 4a, 4b a specific punch ("punch stamp assignment") and / or a specific workpiece, in the present case a specific sheet thickness ("workpiece thickness assignment", here: “sheet thickness assignment”) assigned.
  • the punch stamp assignment and / or the workpiece thickness assignment of a punching die is made as a function of the diameter of the punching to be produced and moreover as a function of the thickness of the sheet to be punched.
  • the diameter of the punch to be created specifies the matching punch diameter of the punch to be used.
  • the thickness of the metal sheet to be processed is decisive insofar as in the interest of a functionally reliable workpiece machining of the die cutting edge diameter the punch diameter of the punch to be combined with the punching die must exceed by a dependent of the sheet thickness to be processed measure.
  • Fig. 5 the punching die arrangement 27 or the punching die arrangement 28 identical in this view with the punching die arrangement 27 is shown.
  • the die openings 25 of the punching dies 27/1 ... 27/10, 28/1 ... 28/10 are dimensioned with the respective die cutting edge diameter before and after a regrinding process.
  • the die cutting edge diameter of the individual punching dies 27/1 ... 27/10, 28/1 ... 28/10 has accordingly increased by 0.2 mm in each case owing to the material removal associated with the regrinding.
  • the stamping die assignment of the punching dies 27/1 ... 27/10, 28/1 ... 28/10 remained unchanged regardless of the regrinding process, then only the sheet-metal thickness assignment of the punching dies 27/1 ... 27/10, 28/1 would be left. ..28 / 10 to change.
  • the punching dies 27/1 ... 27/10, 28/1 ... 28/10 could be used instead of the sheet thicknesses 1 mm, 2 mm ... 10 mm before regrinding Following the post-processing sheet thicknesses of 3 mm, 4 mm ... 12 mm can be machined.
  • the stamping punch assignment of the punching dies 27/1 ... 27/10, 28/1 ... 28/10 is maintained despite the regrinding of the punching die arrangements 27, 28, then the stamping punch assignment of the punching dies 27/1 ... 27/10, 28/1 ... 28/10 to change. If sheet metal thicknesses of 1 mm, 2 mm ... 10 mm are also to be processed following finishing, the punching dies are 27/1 ... 27/10, 28/1 ... 28/10 following the post-processing To assign a punch with a punch diameter of 4.2 mm.
  • a punch stamp assignment and / or a sheet thickness assignment of the punching dies 16, 27/1 ... 27/10, 28/1 ... 28/10 is carried out as part of a computer-aided tool management.
  • a data memory of a numeric tool management system 32 ( Fig. 1 ) are stored the essential data of the tools held by the operator of the punching machine 1 tool inventory.
  • the individual tools assigned identification numbers (“ident numbers"), the dimensions of the respective tool when new and the regrinding length of the individual tools, ie the amount in millimeters, which has been removed on the respective tool, starting from the new state in particular due to wear.
  • the database of the tool management system 32 is changeable. For example, additional tools can be created in the tool management or created tools can be removed from the inventory. In the case of reworking tools, the re-grinding length is entered for the tool in question and recorded in the data memory of the tool management system 32.
  • the regrinding length for example, of punching dies is limited for design reasons. If the maximum regrinding length is reached, this will relevant tool no longer post-processed but then, if a post-processing would be required to be taken from the inventory.
  • a sheet metal 2 is to be machined on the punching machine 1, a numerical machining program to be processed by means of the CNC control 23 of the punching machine 1, namely an NC program 33 (FIG. Fig. 1 ) created.
  • a tool requirement list is also generated in which all tools required for the execution of the NC program 33 are entered.
  • To create the tool requirement list use is made of the tool data stored in the tool management system 32. If a circular punch-out with the diameter d is to be created on a sheet 2 with the thickness s, a round punch with the nominal diameter d is selected from the tool stock that is created in the tool management system 32.
  • the punching die selected can be a stamping tool in the new state, but also a post-processed punching tool whose die opening has only been given the required nominal diameter due to the material removal carried out during the post-processing.
  • the selected punching tools appear with their identification numbers in the tool requirement list of the NC program 33 to be imported into the CNC controller 23 and to be processed by means of the CNC controller 23.
  • the operator of the punching machine 1 can assemble the punching tool set defined by means of the data of the tool management system 32 in order to set up the punching device 12.
  • the operator accesses the punching tools of, for example, a tool cabinet housed in a tool inventory.
  • a scraper 29 is fixed to the tool holder 11.
  • the punch 15 and the punching die 16 is attached to the used as a tool magazine cross rail 9 of the punching machine 1.
  • the other magazine locations are fitted to the cross rail 9 with tool holders 11 and punching tool sets arranged thereon.
  • the distribution of the individual tool holder 11 with the respective punching tool sets on the magazine locations on the cross rail 9 is defined in the context of the setup process for the punching machine 1.
  • the cross rail 9 moves numerically controlled to the punching station 12, where the punch 15 and the punching die 16 are transferred in a conventional manner to the upper tool holder 13 and to the lower tool holder 14.
  • the scraper 29 is installed at the punching station 12.
  • the cross rail 9 moves with the now empty tool holder 11 in a position in which the sheet 2 to be processed by means of the cross rail 9 also provided clamping claws 10 can be detected.
  • This results in the conditions according to Fig. 1 Immediately by the replacement in the upper tool holder 13 and in the lower tool holder 14 of the punch 15 and the punching die 16 are arranged in a workable state.
  • Such a height adjustment may be necessary in particular if the punching die 16 is a post-processed punching die and the lower tool holding fixture 14 still has its predecessor punching die with regard to its height adjustment is tuned.
  • the lower tool holder 14 is lifted by means of acting as a lifting device lower rotary / lifting drive unit 20 by the extent of the material removal carried out in the post-processing of the predecessor of the punching die 16.
  • a material removal compensating pad for the punching die 16 is insert in the lower tool holder 14 before replacing the punching die 16.
  • the sheet 2 to be processed is positioned in the usual way by means of the coordinate guide 7 and then processed by the punch 15 with one or more strokes.
  • FIGS. 7a, 7b are used instead of from the punch 15 and the punching die 16 existing punching tool set 17 according to Fig. 6
  • This punching tool set 17 comprises one of the punching dies 27/1 ... 27/10 of the punching die arrangement 27 according to FIGS FIGS. 3a, 3b such as an eccentric punch 30.
  • FIGS. 7a, 7b are in the FIGS. 7a, 7b on the punching die assembly 27 only five of the total of ten punching dies 27/1 ... 27/10 shown.
  • the punching die assembly 27 and the eccentric punch 30 are attached to a tool holder 11 and fixed by means of the tool holder 11 on the cross rail 9 of the punching machine 1.
  • the eccentric punch 30 is loaded into the upper tool holder 13 and the punching die assembly 27 into the lower tool holder 14 of the punching station 12.
  • the height position of the punching die assembly 27 is adjusted if necessary by means of the lower rotary / lifting drive unit 20.
  • Deviating from the conditions according to Fig. 6 is the punching tool set according to the FIGS. 7a, 7b after being replaced by a relative movement of the punching die assembly 27 on the one hand and the eccentric punch 30 on the other hand arranged in a workable state.
  • the said relative movement is a relative rotational movement about the lifting axis 21.
  • the relative rotational movement is carried out by means of the upper rotary / lifting drive unit 19. This can move the eccentric punch 30 about the lifting axis 21 in rotational positions in which the eccentric Punch 30 for sheet metal processing with each of the punching dies 27/1 ... 27/10 can interact.
  • the eccentric punch 30 is part of a punch assembly 31 which cooperates with the punching die assembly 27.
  • the punching operation only one of the punches of the punch assembly 31 is activated and assigned to the workpiece machining one of the punching dies 27/1 ... 27/10.
  • the punching tool set 17 used for workpiece machining is arranged in a workable state by relative rotation of the upper tool (punch 30 of the punch assembly 31) and lower tool (one of the punching dies 27/1 ... 27/10 of the punching die assembly 27).

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Claims (18)

  1. Procédé de définition d'un ensemble (17) d'outils de poinçonnage en vue de l'usinage par poinçonnage de pièces, notamment de tôles (2),
    • ledit ensemble (17) d'outils de poinçonnage incluant une matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), ainsi qu'un bloc de poinçonnage (15, 30) s'enfonçant dans ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) au cours de l'usinage des pièces, dans une direction de pénétration (26), et ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) étant pourvue d'un orifice de matriçage (25) qui est délimité par une arête de coupe (24) de ladite matrice et qui s'étend dans la direction de pénétration dudit bloc de poinçonnage (15, 30),
    • ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) ayant été obtenue par usinage d'une matrice de poinçonnage originelle, avec enlèvement de matière sur ladite matrice de poinçonnage originelle et avec déplacement corrélatif de l'arête de coupe (24) de ladite matrice, dans la direction de pénétration (26), ainsi qu'avec variation de la section transversale de l'orifice de matriçage (25) à la hauteur de ladite arête de coupe (24) de la matrice ("section transversale de l'arête de coupe de ladite matrice"), et
    • une assignation de ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, étant instaurée en fonction de la section transversale de l'arête de coupe de ladite matrice, d'une part, et de la section transversale dudit bloc de poinçonnage (15, 30) et/ou de l'épaisseur de pièces devant être traversée lors de l'usinage desdites pièces, d'autre part,
    caractérisé par le fait que
    l'assignation de la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, est instaurée en fonction de la variation de la section transversale de l'arête de coupe de ladite matrice, liée à l'usinage de ladite matrice de poinçonnage originelle.
  2. Procédé selon la revendication 1, caractérisé par le fait que l'assignation de la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, est instaurée en fonction de la variation de la taille de la section transversale de l'arête de coupe de ladite matrice, liée à l'usinage de la matrice de poinçonnage originelle.
  3. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la taille de la section transversale de l'orifice de matriçage (25) varie dans la direction (26) de pénétration du bloc de poinçonnage (15, 30), sur la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), du fait d'un angle de dépouille (α) suivant lequel la paroi dudit orifice de matriçage (25) s'étend vis-à-vis de la paroi dudit bloc de poinçonnage (15, 30), dans la direction (26) de pénétration de ce dernier ; et par le fait que l'assignation de la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, est instaurée en fonction de la valeur dudit angle de dépouille (α).
  4. Procédé selon l'une des revendications précédentes, caractérisé par le fait que la forme de la section transversale de l'orifice de matriçage (25) varie dans la direction (26) de pénétration du bloc de poinçonnage (15, 30), sur la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) ; et par le fait que l'assignation de la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, est instaurée en fonction de la variation de la forme de la section transversale de l'arête de coupe de ladite matrice, liée à l'usinage de la matrice de poinçonnage originelle.
  5. Produit de programme informatique présentant des moyens de codage adaptés à l'exécution de toutes les étapes du procédé conforme à l'une des revendications 1 à 4, lorsque ledit produit de programme informatique est exploité sur une installation de traitement de données.
  6. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait qu'il est mis en oeuvre en vue de la définition d'ensembles (17) d'outils de poinçonnage respectivement munis d'une matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), ainsi que d'un bloc de poinçonnage (15, 30), dans le cadre d'un procédé de gestion d'outils de poinçonnage en vue de l'usinage par poinçonnage de pièces, notamment de tôles (2), au moins une matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), ainsi qu'une pluralité de blocs de poinçonnage (15, 30), étant prévus en tant qu'outils de poinçonnage.
  7. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait qu'il est mis en oeuvre en vue de la définition d'un ensemble (17) d'outils de poinçonnage dans le cadre d'un procédé d'agencement d'un dispositif de poinçonnage (12) d'une machine de poinçonnage (1) en vue de l'usinage par poinçonnage de pièces, notamment de tôles (2), présentant un ensemble (17) d'outils de poinçonnage qui comprend une matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), ainsi qu'un bloc de poinçonnage (15, 30), la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et le bloc de poinçonnage (15, 30) d'un ensemble défini (17) d'outils de poinçonnage étant placés, dans une condition apte à l'usinage, sur des paliers (13, 14) de support d'outils dudit dispositif de poinçonnage (12).
  8. Procédé selon la revendication 7, caractérisé par le fait que la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et le bloc de poinçonnage (15, 30) d'un ensemble défini (17) d'outils de poinçonnage sont placés dans une condition apte à l'usinage, sur les paliers (13, 14) de support d'outils du dispositif de poinçonnage (12), en ce sens que ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et ledit bloc de poinçonnage (15, 30) sont mis en place sur un porte-outils commun (11), à l'écart dudit dispositif de poinçonnage (12), et sont ensuite mis en place, au moyen dudit porte-outils (11), sur lesdits paliers (13, 14) de support d'outils dudit dispositif de poinçonnage (12).
  9. Procédé selon la revendication 7 ou la revendication 8, caractérisé par le fait que la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et le bloc de poinçonnage (15, 30) d'un ensemble défini (17) d'outils de poinçonnage sont placés dans une condition apte à l'usinage, sur les paliers (13, 14) de support d'outils du dispositif de poinçonnage (12), en ce sens que ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et ledit bloc de poinçonnage (15, 30) sont positionnés l'un par rapport à l'autre sur lesdits paliers (13, 14) de support d'outils dudit dispositif de poinçonnage (12).
  10. Procédé selon l'une des revendications 7 à 9, caractérisé par le fait que la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) d'un ensemble défini (17) d'outils de poinçonnage est positionnée sur le dispositif de poinçonnage (12) de la machine de poinçonnage (1), dans la direction (26) de pénétration du bloc de poinçonnage (15, 30) associé, en fonction de la hauteur de l'enlèvement de matière lors de l'usinage de la matrice de poinçonnage originelle.
  11. Procédé d'usinage par poinçonnage de pièces, notamment de tôles (2), au moyen d'un dispositif de poinçonnage (12) d'une machine de poinçonnage (1), un ensemble (17) d'outils de poinçonnage étant défini et ledit dispositif de poinçonnage (12) étant agencé avec ledit ensemble défini (17) d'outils de poinçonnage, avant qu'une pièce à usiner ne soit sollicitée au moyen dudit ensemble (17) d'outils de poinçonnage, en vue de l'usinage par poinçonnage, caractérisé par le fait que l'ensemble (17) d'outils de poinçonnage est défini d'après le procédé conforme à l'une des revendications 1 à 4 ou 7 à 10.
  12. Ensemble d'outils de poinçonnage dévolu à l'usinage par poinçonnage de pièces, notamment de tôles (2), incluant une matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), ainsi qu'un bloc de poinçonnage (15, 30) s'enfonçant dans ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) au cours de l'usinage des pièces, dans une direction de pénétration (26),
    • ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) étant pourvue d'un orifice de matriçage (25) qui est délimité par une arête de coupe (24) de ladite matrice, qui s'étend dans la direction de pénétration dudit bloc de poinçonnage (15, 30), et dont la section transversale varie dans ladite direction (26) de pénétration dudit bloc de poinçonnage (15, 30),
    • ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) étant soumise à un post-usinage avec enlèvement de matière dans la direction (26) de pénétration dudit bloc de poinçonnage (15, 30) et avec déplacement corrélatif de l'arête de coupe (24) de ladite matrice, dans la direction de pénétration (26), ainsi qu'avec variation de la section transversale de l'orifice de matriçage (25) à la hauteur de ladite arête de coupe (24) de la matrice ("section transversale de l'arête de coupe de ladite matrice"), et
    • ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) présentant une assignation à un bloc de poinçonnage, et/ou à une épaisseur de pièces, en fonction de la section transversale de l'arête de coupe de ladite matrice, d'une part, et de la section transversale d'un bloc de poinçonnage (15, 30) et/ou de l'épaisseur de pièces devant être traversée lors de l'usinage desdites pièces, d'autre part,
    caractérisé par le fait que
    ledit ensemble (17) d'outils de poinçonnage a été défini d'après le procédé conforme à l'une des revendications 1 à 4 ou 7 à 10.
  13. Machine de poinçonnage dévolue à l'usinage par poinçonnage de pièces, notamment de tôles (2), équipée d'un ensemble (17) d'outils de poinçonnage dévolu à l'usinage par poinçonnage desdites pièces et incluant une matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), ainsi qu'un bloc de poinçonnage (15, 30) s'enfonçant dans ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) au cours de l'usinage desdites pièces, dans une direction de pénétration (26), caractérisée par le fait qu'un ensemble (17) d'outils de poinçonnage, conforme à la revendication 12, est prévu en tant qu'ensemble (17) d'outils de poinçonnage.
  14. Machine de poinçonnage selon la revendication 13, caractérisée par le fait que l'ensemble (17) d'outils de poinçonnage inclut un bloc de poinçonnage (30) d'un jeu (31) de blocs de poinçonnage comprenant plusieurs blocs de poinçonnage, ainsi que la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) ; et par le fait qu'il est prévu un système de réglage (19, 20) au moyen duquel ledit jeu (31) de blocs de poinçonnage et ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) peuvent être positionnés l'un par rapport à l'autre en fonction de l'assignation de ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et le bloc de poinçonnage (15, 30) associé pouvant, de la sorte, être placés dans une condition apte à l'usinage.
  15. Machine de poinçonnage selon la revendication 13 ou la revendication 14, caractérisée par le fait que l'ensemble (17) d'outils de poinçonnage inclut un bloc de poinçonnage (30), ainsi qu'une matrice de poinçonnage (27/1...27/10, 28/1...28/10) d'un jeu (27, 28) de matrices de poinçonnage comprenant plusieurs matrices de poinçonnage (27/1...27/10, 28/1...28/10) ; et par le fait qu'il est prévu un système de réglage (19, 20) au moyen duquel ledit bloc de poinçonnage (30) et ledit jeu (27, 28) de matrices de poinçonnage peuvent être positionnés l'un par rapport à l'autre en fonction de l'assignation de ladite matrice de poinçonnage (27/1...27/10, 28/1...28/10) à un bloc de poinçonnage, et/ou à une épaisseur de pièces, la matrice de poinçonnage (27/1...27/10, 28/1...28/10) et le bloc de poinçonnage (15, 30) associé pouvant, de la sorte, être placés dans une condition apte à l'usinage.
  16. Machine de poinçonnage selon l'une des revendications 13 à 15, caractérisée par le fait qu'il est prévu un système de levage (20) au moyen duquel la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) peut être positionnée, dans la direction (26) de pénétration du bloc de poinçonnage (15, 30) associé, en fonction de la hauteur de l'enlèvement de matière sur ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10).
  17. Programme d'usinage dédié à l'actionnement de la machine de poinçonnage (1) conforme à l'une des revendications 14 à 16, caractérisé par la présence d'instructions de commande destinées au système de réglage (19, 20) affecté au positionnement mutuel du jeu (31) de blocs de poinçonnage et de la matrice de poinçonnage (16, 27/1...27/10, 28/1... 28/10), et/ou d'instructions de commande correspondantes destinées au système de réglage (19, 20) affecté au positionnement mutuel du bloc de poinçonnage (15, 30) et du jeu (27, 28) de matrices de poinçonnage, sachant que, sur la base desdites instructions de commande,
    • ledit système de réglage (19, 20), affecté au positionnement mutuel du jeu (31) de blocs de poinçonnage et de la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), positionne ledit jeu (31) de blocs de poinçonnage et ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), l'un par rapport à l'autre, en fonction de la variation de la section transversale de l'arête de coupe de ladite matrice, liée à un post-usinage de ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), et place ainsi, dans une condition apte à l'usinage, la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) et le bloc de poinçonnage associé (15, 30) de l'ensemble (17) d'outils de poinçonnage défini d'après le procédé conforme à l'une des revendications 1 à 4, et/ou
    • ledit système de réglage (19, 20), affecté au positionnement mutuel du bloc de poinçonnage (15, 30) et du jeu (27, 28) de matrices de poinçonnage, positionne ledit bloc de poinçonnage (30) et ledit jeu (27, 28) de matrices de poinçonnage, l'un par rapport à l'autre, en fonction de la variation de la section transversale de l'arête de coupe de ladite matrice, liée à un post-usinage de ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), et place ainsi, dans une condition apte à l'usinage, la matrice de poinçonnage (27/1...27/10, 28/1...28/10) et le bloc de poinçonnage associé (15, 30) de l'ensemble (17) d'outils de poinçonnage défini d'après le procédé conforme à l'une des revendications 1 à 4.
  18. Programme d'usinage selon la revendication 17, dédié à l'actionnement de la machine de poinçonnage (1) conforme à la revendications 16, caractérisé par la présence d'instructions de commande destinées au système de levage (20) affecté au positionnement de la matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) dans la direction (26) de pénétration du bloc de poinçonnage (15, 30), sachant que, sur la base desdites instructions de commande, ledit système de levage (20) affecté au positionnement de ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10) dans la direction (26) de pénétration dudit bloc de poinçonnage (15, 30) positionne ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10), dans la direction (26) de pénétration du bloc de poinçonnage (15, 30) associé, en fonction de la hauteur de l'enlèvement de matière sur ladite matrice de poinçonnage (16, 27/1...27/10, 28/1...28/10).
EP20080018279 2008-10-18 2008-10-18 Procédé de définition d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées, tel ensemble d'outil de poinçonnage ainsi que machine de poinçonnage dotée d'un tel ensemble d'outil de poinçonnage Not-in-force EP2177290B1 (fr)

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EP20120179637 EP2522443B1 (fr) 2008-10-18 2008-10-18 Programme de fonctionnement à commande d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées
EP20080018279 EP2177290B1 (fr) 2008-10-18 2008-10-18 Procédé de définition d'un ensemble d'outil de poinçonnage destiné au traitement par poinçonnage de pièces usinées, tel ensemble d'outil de poinçonnage ainsi que machine de poinçonnage dotée d'un tel ensemble d'outil de poinçonnage
JP2009236233A JP5858595B2 (ja) 2008-10-18 2009-10-13 ワークピースを打抜き加工するための打抜き工具セットを規定するための方法ならびにこのような形式の打抜き工具セットを備えた打抜き機械
US12/579,812 US8701532B2 (en) 2008-10-18 2009-10-15 Reprocessed dies
US14/220,576 US9573182B2 (en) 2008-10-18 2014-03-20 Reprocessed dies

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JP5858595B2 (ja) 2016-02-10
US20140202298A1 (en) 2014-07-24
JP2011025309A (ja) 2011-02-10
US9573182B2 (en) 2017-02-21
US20100095824A1 (en) 2010-04-22
EP2177290A1 (fr) 2010-04-21
EP2522443A3 (fr) 2012-12-05
EP2522443A2 (fr) 2012-11-14
EP2522443B1 (fr) 2014-07-30
US8701532B2 (en) 2014-04-22

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