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EP0585576B1 - Machine à poinçonner - Google Patents

Machine à poinçonner Download PDF

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Publication number
EP0585576B1
EP0585576B1 EP93111350A EP93111350A EP0585576B1 EP 0585576 B1 EP0585576 B1 EP 0585576B1 EP 93111350 A EP93111350 A EP 93111350A EP 93111350 A EP93111350 A EP 93111350A EP 0585576 B1 EP0585576 B1 EP 0585576B1
Authority
EP
European Patent Office
Prior art keywords
workpiece
die
punching
punch
worktable
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.)
Expired - Lifetime
Application number
EP93111350A
Other languages
German (de)
English (en)
Other versions
EP0585576A1 (fr
Inventor
Heinrich Gerdes
Alois Feldker
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.)
Feldker Alois
Original Assignee
Feldker Alois
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 Feldker Alois filed Critical Feldker Alois
Publication of EP0585576A1 publication Critical patent/EP0585576A1/fr
Application granted granted Critical
Publication of EP0585576B1 publication Critical patent/EP0585576B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers

Definitions

  • the invention relates to a punch, in which the workpiece is supported on a support plate of a work table or the like and can be displaced there relative to the tool, wherein a plurality of openings or holes can be punched into the workpiece one behind the other by means of at least one punch which can be moved vertically from top to bottom and which can be punched in a corresponding recess of a die occurs during and after the punching process, a cutting edge being formed between the punch and the die, which cuts out the opening or the hole from the workpiece.
  • the invention further relates to a method for punching according to the preamble of claim 6. A punch and a method for punching according to this type are known from DE-A-2718536.
  • a disadvantage of this known arrangement is that during the punching process, a burr forms on the workpiece in the peripheral region of the opening, which burrs into the die. This burr formation occurs all the more, the more the tools, that is to say the punch and / or die, are worn out.
  • the result of the burr formation is that the workpiece can only be moved with difficulty to the next punching position, because the previously punched hole and the burr formed thereby hold the workpiece in the die relative to the die.
  • the hindrance caused by the ridge can also have a greater impact the more holes are already made in the workpiece.
  • the invention is accordingly based on the object of designing a hole punch of the type mentioned in such a way that, despite a possibly relatively strong formation of a burr, a cyclical displacement of the workpiece to the location of the next punch hole is effortless and in particular also possible automatically.
  • This object is achieved in that the support plate and / or the worktable can be raised so that the workpiece can be subjected to an upward stroke relative to the die before and during the displacement after a previous punching process.
  • the burr formation can no longer hinder the movement of the workpiece to the next strand location, because due to the stroke the ridge reaching into the recess of the die is lifted out of the die, so that a transverse displacement across the burr and across for vertical extension of the punch and die.
  • This stroke can be relatively small, in particular it depends on the height of the ridge, which in turn depends on the material. As a rule, it is sufficient if the stroke has a size of approximately 2 mm.
  • the support plate and / or the worktable is provided with an articulated bearing at its end facing away from the die and the tool, this end of the support plate being pivotable about a horizontal axis. This means that in this area the support plate does not perform a stroke, so that the stroke only has an effect on the tool side, ie on the side facing away from the joint axis.
  • a particular advantage of this arrangement is that it is possible due to the use of a hinge axis defining the one edge of the support plate, but nevertheless to support the support plate exactly in the machine during the punching process.
  • the hole punch is provided with a stop rail which is provided with mountings which can be fastened to the rail in different positions, the stop rail being movable relative to the work table and in the direction of its longitudinal axis in addition to its transverse movement.
  • stop rail it is essential that the stop rail can be easily adjusted in both directions, which makes it necessary to move the workpiece in a special way after the punching process.
  • the invention provides that the workpiece before and during the displacement after a previous one Punching is subjected to an upward stroke relative to the die.
  • the device consists of a work table and support plate 1 and a stop rail 2, which is displaceable relative to the work table and support plate 1 in two directions shown by the double arrows 3 and 4.
  • a stepping motor 5 is provided which drives a spindle 6 which engages in a spindle nut on the stop rail 2 and thus moves the stop rail 2 in the direction of the double arrow 4.
  • the stop rail 2 is driven synchronously by a corresponding spindle 7.
  • the double arrow 3 that is to say in the longitudinal direction of the stop rail 2
  • the latter is moved by means of a stepping motor 8 via a spindle 9.
  • the actual workpiece holders which can be attached to the stop rail 2 at different distances from one another due to the bores 10, are designated by 11 and 12.
  • a punch 16 acts in the direction of arrow 13 on the workpieces held in this way, the die holder 14 being indicated by dashed lines and the tool holder or the tool being able to extend through an opening 15 in the work table.
  • FIG. 2 is the hole punch according to FIG. 1 with a workpiece 17 placed on the work table and support plate 1 and held there. This is to be provided with punch holes 18, as indicated schematically. Since the punched holes 18 are punched one behind the other, the displacement movement of the workpiece 17 is impeded by the burr of the previously punched holes 18 in the manner described. This hindrance is avoided if the worktable and support plate 1, as provided according to the invention, is subjected to a stroke.
  • This stroke can come about, for example, in that the worktable and support plate 1 is evenly raised at all four corners, that is in the direction of the arrows 19, and that the workpiece 17 is displaced in the raised state.
  • a particularly advantageous method for bringing about the stroke is that, as shown in FIG. 2, the worktable or support plate 1 has an articulated bearing at its end facing away from the die 20 (see FIG. 3) and the tool 21 ( Bearing blocks 22 and 23) is provided so that this end of the worktable or support plate 1 is pivotable about a horizontal axis 24.
  • the work table and support plate 1 is thus in the direction of the double arrow 25 pivoted around the axis 24, the pivoting path being extremely short in this area, because at the end opposite the axis 24, that is to say in the area of the tool and the workpiece, the pivoting path according to the double arrow 26 only has to be approximately 2 mm in order to position the workpiece 17 relative to the Work table and support plate 1 to move.
  • the lifting or swiveling movement can take place automatically and be coupled to the displacement process.
  • Fig. 3 illustrates on a greatly enlarged scale and in a schematic representation these relationships between the die 20 and the tool 21 (see FIG. 2), a cutting edge is formed, which forms a punching movement in the direction of arrow 13 against the workpiece 17 Ridges 27 leads, which protrudes into the associated recess 28 of the die 20, so that a displacement of the workpiece 17 in the horizontal direction is hindered.
  • the workpiece 17 is subjected to a stroke at which it is moved away from the die 20 in the direction of the arrow 29, so that the ridge 27 emerges from the recess 28.
  • the worktable or support plate 1 is moved back against the direction of the arrows 30, so that the workpiece 17 is supported again on the die 20 and the next punching process is carried out can.
  • the invention provides that the workpiece before and during the displacement after a previous one Punching is subjected to an upward stroke relative to the die.

Landscapes

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

Claims (6)

  1. Poinçonneuse, dans laquelle la pièce à usiner est appuyée sur une plaque d'appui d'une table de travail (1) ou sur un élément semblable et peut être déplacée là par rapport à l'outil (21), dans laquelle plusieurs ouvertures ou trous peuvent être poinçonnés l'un derrière l'autre dans la pièce à usiner (17) au moyen d'au moins un poinçon (21) qui peut être déplacé verticalement vers le haut et vers le bas et qui pénètre dans un évidement (28) correspondant d'une matrice (20) pendant et après le processus de poinçonnage, dans laquelle il est formé entre le poinçon (21) et la matrice (20) une arrête de coupe qui découpe l'ouverture ou le trou dans la pièce à usiner, caractérisée en ce que la plaque d'appui et/ou la plaque de table de travail (1) peut être soulevée de façon que la pièce à usiner (17) puisse être soumise, par rapport à la matrice (20), à une course dirigée vers le haut, avant et pendant le déplacement après un processus de poinçonnage précédent.
  2. Poinçonneuse suivant la revendication 1, caractérisée en ce que la course a une grandeur d'approximativement 2 mm.
  3. Poinçonneuse suivant l'une des revendications précédentes, caractérisée en ce que la plaque d'appui et/ou la plaque de table de travail (1) est munie d'un support articulé (22, 23) à son extrémité tournée à l'écart de la matrice (20) et de l'outil (21).
  4. Poinçonneuse suivant la revendication 4, caractérisée en ce que l'extrémité de la plaque d'appui et/ou de la plaque de table de travail (1) peut pivoter autour d'un axe horizontal (24).
  5. Poinçonneuse suivant l'une des revendications précédentes, caractérisée en ce que la poinçonneuse est équipée d'une barre de butée (2) qui est équipée de supports (11, 12) pouvant être fixés à la barre dans différentes positions par rapport à celle-ci, la barre de butée (2) pouvant être déplacée par rapport à la table de travail (1) et selon la direction de son axe longitudinal, en plus de son mouvement transversal.
  6. Procédé de poinçonnage, dans lequel la pièce à usiner (17) est appuyée sur une plaque d'appui d'une table de travail ou d'un élément semblable (1) et est déplacée là par rapport à l'outil (21), dans lequel plusieurs ouvertures ou trous sont poinçonnés l'un derrière l'autre dans la pièce à usiner (17) au moyen d'au moins un poinçon (21) qui peut être déplacé verticalement vers le haut et vers le bas et qui pénètre dans un évidement (28) de la matrice (20) pendant et après le processus de poinçonnage, dans lequel une arrête de coupe qui découpe l'ouverture ou le trou dans la pièce à usiner (17) est formée entre le poinçon (21) et la matrice (20), caractérisé en ce que la pièce à usiner (17) est soumise avant et pendant le déplacement, après un processus de poinçonnage précédent, à une course, dirigée vers le haut, par rapport à la matrice (20).
EP93111350A 1992-08-05 1993-07-15 Machine à poinçonner Expired - Lifetime EP0585576B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4225836A DE4225836A1 (de) 1992-08-05 1992-08-05 Lochstanze
DE4225836 1992-08-05

Publications (2)

Publication Number Publication Date
EP0585576A1 EP0585576A1 (fr) 1994-03-09
EP0585576B1 true EP0585576B1 (fr) 1996-01-31

Family

ID=6464865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111350A Expired - Lifetime EP0585576B1 (fr) 1992-08-05 1993-07-15 Machine à poinçonner

Country Status (3)

Country Link
EP (1) EP0585576B1 (fr)
DE (2) DE4225836A1 (fr)
ES (1) ES2084420T3 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243020A1 (de) * 2002-09-17 2004-03-25 Ina-Schaeffler Kg Kugelgewindetrieb und Verfahren zum Herstellen einer Spindelmutter, insbesondere eines Kugelgewindetriebes
CN102225551B (zh) * 2011-04-07 2013-06-05 江汉大学 一种晒图机用聚四氟乙烯滤网的生产工艺
EP2829334B1 (fr) 2013-07-25 2015-12-30 TRUMPF Werkzeugmaschinen GmbH + Co. KG Dispositif d'entraînement pour une unité mobile d'une machine-outil et machine-outil dotée d'un tel dispositif d'entraînement
CN105081069A (zh) * 2015-09-18 2015-11-25 秦皇岛信越智能装备有限公司 一种车轮在线打孔机
CN111185522A (zh) * 2020-02-17 2020-05-22 黄薇婷 一种金属圆管自动加工装置
CN112620521A (zh) * 2020-11-24 2021-04-09 南京金志精密机电有限公司 一种精密机电加工用生产线
CN113245440B (zh) * 2021-06-29 2021-09-28 南通科帆钣金有限公司 一种钣金冲孔装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1563921A (en) * 1976-04-26 1980-04-02 Mercer Nairne & Co Ltd Assemblies for workpiece positioning
US4879894A (en) * 1988-06-06 1989-11-14 Roper Whitney Company Press with movable workpiece support carrier
DE3931320C1 (fr) * 1989-09-20 1991-08-08 Feintool International Holding, Lyss, Ch
DE4121981A1 (de) * 1991-07-03 1993-01-07 Heinrich Gerdes Vorrichtung zur halterung von werkstuecken bei lochstanzen

Also Published As

Publication number Publication date
EP0585576A1 (fr) 1994-03-09
DE4225836A1 (de) 1994-02-10
DE59301540D1 (de) 1996-03-14
ES2084420T3 (es) 1996-05-01

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