WO2020083865A1 - Outil d'estampage - Google Patents

Outil d'estampage Download PDF

Info

Publication number
WO2020083865A1
WO2020083865A1 PCT/EP2019/078646 EP2019078646W WO2020083865A1 WO 2020083865 A1 WO2020083865 A1 WO 2020083865A1 EP 2019078646 W EP2019078646 W EP 2019078646W WO 2020083865 A1 WO2020083865 A1 WO 2020083865A1
Authority
WO
WIPO (PCT)
Prior art keywords
punching
tool
intermediate plate
punch
tool according
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.)
Ceased
Application number
PCT/EP2019/078646
Other languages
German (de)
English (en)
Inventor
Andreas Winters
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.)
EHRT Maschinenbau GmbH and Co KG
Original Assignee
EHRT Maschinenbau GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE102019110171.9A external-priority patent/DE102019110171A1/de
Application filed by EHRT Maschinenbau GmbH and Co KG filed Critical EHRT Maschinenbau GmbH and Co KG
Priority to EP19808533.4A priority Critical patent/EP3870378A1/fr
Priority to US17/287,485 priority patent/US20210379641A1/en
Publication of WO2020083865A1 publication Critical patent/WO2020083865A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—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
    • 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
    • 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

Definitions

  • the invention relates to a tool.
  • the invention relates to a processing machine with the cutting tool.
  • the Sfanzwerkmaschinee differ from each other in the number of Sfanzeinheifen and / or in their structure.
  • the object of the present invention is to provide an improved cutting tool.
  • a cutting tool with a tool upper body, an intermediate piaffe, at least one cutting unit, in particular a plurality of cutting units, a tool holder body for guiding the cutting unit and at least two guide bolts for guiding the upper body relative to the intermediate body, which are firmly connected to the intermediate paffe, whereby the guide bolts are arranged off-center and the cutting unit has a cutting pin and a cutting pin separate from the cutting pin ⁇ , which is operatively connected to the upper part of the tool.
  • the cutting tool according to the invention has the advantage that, due to the plurality of guide bolts arranged off-center, a large amount of installation space is available in a central region of the cutting tool. This is particularly advantageous in the case of cutting tools that have multiple cutting units.
  • the eccentric arrangement of the guide pins means ⁇ that there is no guide pin coaxial with a central axis of the cutting tool.
  • the separate formation of the Sfanzbolzens and of the punch means that the two components are not made in one piece.
  • the upper part of the tool can have a receptacle for receiving the socket bolt and part of the socket stamp.
  • the receptacle can be designed as a breakthrough so that a sfanzbolzen can be actuated directly from the outside, for example by an actuator.
  • This offers the advantage that in the case of punching tools which have multiple punching units, the punching units can be operated separately from one another. It is conceivable that a single or several punching units can be operated by the actuator at the same time ⁇ .
  • the actuator can have a hydraulic cylinder.
  • the upper tool body can have at least one bushing for receiving the guide bolt.
  • a low-friction movement of the tool upper body relative to the intermediate plate is thus possible in a simple manner.
  • the guide bolts remain stationary relative to the intermediate plate and therefore do not move.
  • the upper part of the tool can be ⁇ arranged at a distance from the intermediate plate.
  • the tool upper body and the intermediate plate can be contact-free when the punching tool is not actuated. This means ⁇ that there is a gap between the tool body and the intermediate plate.
  • the stamping tool can have spacing means which ensure that the upper part of the tool is arranged at a predetermined distance from the intermediate plate ⁇ .
  • the intermediate piaffe can be firmly connected to the tool body.
  • the intermediate piaffe can be releasably firmly connected to the tool holder body. This can be done, for example, with a screw connection.
  • the tool holder body can extend from the intermediate piaffe in a direction pointing away from the tool upper body. In this case, during a punching process, the punch stamp can protrude from the tool body and provide for this.
  • the tool upper body, the intermediate piaffe and the tool holder body can be designed and arranged when the tool is unenabled so that the intermediate piaffe is arranged between the tool upper body and the tool holder body along the central axis of the tool.
  • the upper tool body can be polygonal, in particular rectangular, in the axial normal cross-section.
  • the intermediate piaffe can be polygonal, in particular rectangular, in the axial cross section.
  • the tool holder body can be round in the axial normal cross-section.
  • the guide bolts can each be arranged in a corner area of the upper part of the tool and / or the intermediate piaffe.
  • the forces that arise during the punching process can be absorbed by the guide bolts.
  • a cutting tool in which four guide bolts are provided is particularly advantageous.
  • Each of the guide bolts is arranged in a corner area of the rectangular upper tool body and / or the rectangular intermediate piaffe.
  • the guide bolts also have the advantage that they prevent the upper part of the tool from rotating about a central axis of the cutting tool relative to the intermediate piaffe.
  • the Guide bolts can be aligned in such a way that its longitudinal axis runs parallel to the central axis of the punching tool.
  • the punching unit can be arranged off-center. This means that a longitudinal axis of the punching units is not arranged coaxially to the central axis of the punching tool.
  • Such an embodiment offers the advantage that several punching units can be provided. If several punching units are provided, each of the punching units can be arranged off-center.
  • the punching units can have the same structure. As a result, a punching tool can be provided, by means of which a workpiece can be punched simultaneously in different places during a punching process.
  • the punching tool can be designed such that a punching direction is coaxial with a guiding direction.
  • a punching direction can be off-axis and / or parallel to the central axis of the punching tool.
  • the tool holder body can have a scraper device at its end remote from the intermediate plate.
  • the wiper device can have at least one wiper.
  • the wiper is used to guide the punching unit of the punching tool.
  • the scraper ensures that after a punching process the workpiece does not move together with the punching unit in a direction of retraction of the punching unit.
  • the stripper ensures that the punching unit and the workpiece are separated after the punching process.
  • the scraper is to be used to prevent contaminants, such as material remnants of the workpiece, from getting into the punching tool, in particular the punching punch.
  • the lower tool body can have another receptacle in which the stamp is partially arranged. If the punching tool is in an unenabled condition, the punch may be arranged partially in the space between the upper tool body, in particular an underside of the upper tool body, and the intermediate plate, in particular an upper side of the intermediate plate.
  • the punch may have a T-shaped punch head, in particular on its side facing the punch bolt.
  • the punch and the tool body can be positively connected to one another.
  • the interlocking connection can be realized through the T-shaped punch head and the wall that defines the tool body.
  • the stamp head can, due to the existing positive connection with the upper tool body, cause the upper tool body to move in the direction of the workpiece.
  • the punching bolt can rest on the punch, in particular directly. In this way, an operative connection between the punching pin and the punch can be realized in a simple manner.
  • the punch bolt can be designed as a plunger.
  • the punch unit can have a spring that is supported at one end on the punch bolt and at one end on the tool body ⁇ .
  • the spring is tensioned during a punching process.
  • a different spring can be assigned to each punching unit of the punching tool.
  • the spring serves to push the punching bolt of the punching unit that does not punch the workpiece ⁇ towards the workpiece. This makes it easy to prevent the end of the punch bolt from the punch from sticking out of the upper part of the tool ⁇ .
  • a processing machine for machining a workpiece with a tool holder, in which a cutting tool is arranged, is particularly advantageous.
  • the cutting tool is not screwed to the tool holder ⁇ . During the punching process, the punch tool is moved towards the workpiece ⁇ .
  • the tool holder serves as a guide for the cutting tool.
  • FIG. 1 shows a perspective illustration of the punching tool according to the invention
  • FIG. 2 shows a plan view of the cutting tool according to the invention
  • Figure 3 is a sectional view of part of a processing machine with the cutting tool according to the invention.
  • a cutting tool 1 shown in FIG. 1 has an upper tool body 2, an intermediate plate 3, three punching units 4 and a lower tool body 5.
  • the cutting tool 1 has four guide bolts 6 for guiding the upper tool body 2 relative to the intermediate plate 3.
  • the guide bolts 6 are firmly connected to the intermediate plate 3 and arranged off-center ⁇ . This means ⁇ that the longitudinal axes of the guide bolts are not coaxial with a central axis M of the punch 1.
  • the punching unit ⁇ 4 has a punching bolt 14 shown in FIG. 3 in the form of a plunger and a punching punch 13 separate from the punching bolt, which is operatively connected to the tool upper body 3.
  • Each of the three punching units 4 is Punching tool 1 constructed identically.
  • the lower tool body 5 is connected to the intermediate plate 3 in a rotational test and extends from an underside of the intermediate plate 3 in a direction away from the upper tool body 2.
  • the lower tool body 5 has a wiper device 9 at its end facing away from the intermediate plate 3.
  • the intermediate piaffe 3 and the upper tool body 2 are arranged in the state shown in FIG. 1, in which there is no cutting operation, such that there is a space 21 between the intermediate plate 3 and the upper tool body 2.
  • the intermediate plate 3 and the upper tool body 2 are spaced ⁇ apart ⁇ along the direction of the central axis M.
  • the intermediate plate 3 and the upper tool body 2 are spaced ⁇ from one another ⁇ in such a way that they do not contact each other when the punch 1 is not actuated.
  • the four guide bolts 6 are firmly connected at one end to the intermediate plate 3.
  • the fixed connection is made by a screw connection.
  • the guide bolts 6 are each arranged in a socket 8 ⁇ .
  • the bushing 8 is part of the upper tool body 2.
  • the punching units 4 are also arranged off-center ⁇ . Accordingly, no longitudinal axis of the punching units 4 is coaxial with the central axis M of the punching tool 1.
  • FIG. 2 shows a top view of the punching tool 1 shown in FIG. 1.
  • the tool upper body 2 has an essentially rectangular shape.
  • the guide bolts 6 are each arranged in a corner region 20 of the upper tool body 2 ⁇ .
  • the intermediate piaffe 3 also has an essentially rectangular shape ⁇ , the guide bolts are also each arranged in a corner region of the intermediate plate 3 ⁇ .
  • FIG. 3 shows a sectional view of part of a processing machine 16 with the punching tool 1.
  • the processing machine 16 has a tool magazine 19 that has several tool holders 17. A punch 1 can be broken into each of the tool holders 1 7. The punch 1 is not screwed to the tool magazine 17 ⁇ .
  • the processing machine 16 also has a machine table 18 which carries a workpiece, not shown, to be punched.
  • the punch bolt 14 is arranged in a receptacle 7 of the upper tool body 2 ⁇ .
  • One end of the punching bolt 14 lies on the punching punch 13.
  • a spring 15 is also arranged ⁇ .
  • the spring 15 is supported at one end on the punch bolt 14 and at another end on a component of the upper tool body 2.
  • the punch 13 is guided by a stripper 10.
  • the wiper 10 is arranged in a receptacle of the wiper device 9 ⁇ .
  • the punch 13 has a stamp head 12 which is arranged on the end of the punch 13 facing away from the stripper 10.
  • the stamp head 12 is T-shaped ⁇ and arranged in the receptacle 7 ⁇ . In particular, the stamp head 12 is positively connected to the upper tool body 2.
  • the punch 13 extends partially through a receptacle 11 of the lower tool body 7, the intermediate space 19 and the receptacle 7 of the upper tool body 2.
  • the punch 1 is lowered in the direction of the machine table 18, the tool holder 17 guiding the movement of the punch 1.
  • An actuator of the processing machine 1 6, not shown in the figures, actuates ⁇ a punching unit ⁇ 4 or more punching units 4 of the punching tool 1 for punching the workpiece, not shown.
  • the punch bolt 14 presses the punch head 12 in the direction of the workpiece, not shown.
  • the punch 13 comes out of the stripper 10 for punching the workpiece. Due to the positive connection between the punch 13 and the upper tool body 2, a force directed towards the workpiece acts on the upper tool body 2. This causes the tool body 2 to also move in the direction of the workpiece ⁇ .
  • the spring 15 is tensioned for each punch unit ⁇ 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)

Abstract

L'invention concerne un outil d'estampage comprenant un corps supérieur d'outil, une plaque intermédiaire, au moins une unité d'estampage, en particulier plusieurs unités d'estampage, un corps inférieur d'outil conçu pour guider l'unité d'estampage et au moins deux boulons de guidage conçus pour guider le corps supérieur d'outil par rapport à la plaque intermédiaire et reliés solidement à la plaque intermédiaire. Ces boulons d'estampage sont agencés de manière excentrée, et l'unité d'estampage comporte un boulon d'estampage et un poinçon d'estampage distinct du boulon d'estampage et lié de manière fonctionnelle au corps supérieur d'outil.
PCT/EP2019/078646 2018-10-22 2019-10-22 Outil d'estampage Ceased WO2020083865A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19808533.4A EP3870378A1 (fr) 2018-10-22 2019-10-22 Outil d'estampage
US17/287,485 US20210379641A1 (en) 2018-10-22 2019-10-22 Stamping tool

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102018126203 2018-10-22
DE102018126203.5 2018-10-22
DE102019110171.9A DE102019110171A1 (de) 2018-10-22 2019-04-17 Stanzwerkzeug
DE102019110171.9 2019-04-17

Publications (1)

Publication Number Publication Date
WO2020083865A1 true WO2020083865A1 (fr) 2020-04-30

Family

ID=68653440

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/078646 Ceased WO2020083865A1 (fr) 2018-10-22 2019-10-22 Outil d'estampage

Country Status (1)

Country Link
WO (1) WO2020083865A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010008099A1 (en) * 2000-01-18 2001-07-19 Yamaha Corporation Punching apparatus and the punching unit thereof
EP1153676A2 (fr) * 2000-05-11 2001-11-14 Tradewise Engineering Limited Adaptateur de porte-outil pour poinçons à changement rapide pour la conversion des machines à poinçon simple dans des machines à poinçon multiple
EP2551030A1 (fr) * 2011-07-25 2013-01-30 Corrada S.p.A Ensemble d'outils de découpage avec au moins un dispositif de rotation différentielle de l'unité de découpage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010008099A1 (en) * 2000-01-18 2001-07-19 Yamaha Corporation Punching apparatus and the punching unit thereof
EP1153676A2 (fr) * 2000-05-11 2001-11-14 Tradewise Engineering Limited Adaptateur de porte-outil pour poinçons à changement rapide pour la conversion des machines à poinçon simple dans des machines à poinçon multiple
EP2551030A1 (fr) * 2011-07-25 2013-01-30 Corrada S.p.A Ensemble d'outils de découpage avec au moins un dispositif de rotation différentielle de l'unité de découpage

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