EP0183648B1 - Presse zum Bearbeiten von Werkstücken aus Metall - Google Patents

Presse zum Bearbeiten von Werkstücken aus Metall Download PDF

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Publication number
EP0183648B1
EP0183648B1 EP85810531A EP85810531A EP0183648B1 EP 0183648 B1 EP0183648 B1 EP 0183648B1 EP 85810531 A EP85810531 A EP 85810531A EP 85810531 A EP85810531 A EP 85810531A EP 0183648 B1 EP0183648 B1 EP 0183648B1
Authority
EP
European Patent Office
Prior art keywords
press
tool
fineblanking
machining
quick change
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
EP85810531A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0183648A1 (de
Inventor
Johannes Haack
Hans Wymann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Feintool International Holding AG
Original Assignee
Feintool International Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Feintool International Holding AG filed Critical Feintool International Holding AG
Publication of EP0183648A1 publication Critical patent/EP0183648A1/de
Application granted granted Critical
Publication of EP0183648B1 publication Critical patent/EP0183648B1/de
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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/16—Shoulder or burr prevention, e.g. fine-blanking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • 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
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2096—Means to move product out of contact with tool
    • Y10T83/2135—Moving stripper timed with tool stroke
    • Y10T83/215—Carried by moving tool element or its support
    • Y10T83/2153—Fluid pressure actuated stripper
    • 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
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8858—Fluid pressure actuated
    • Y10T83/8864—Plural cylinders
    • 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
    • Y10T83/9425—Tool pair

Definitions

  • the invention relates to a press for machining metal workpieces according to the preamble of claim 1.
  • DE-A-3 227 696 describes a progressive tool which is used in high-speed presses.
  • a tool comprises a multiplicity of processing stations through which a punched strip conveyed by the tool is processed.
  • the processing stations are cutting, bending, bending, cranking and turning stations, which are subsequently housed in the tool.
  • a press with a follow-up tool is also known, the eight stations of which gradually deform the workpiece.
  • the workpieces are transported by means of a device with rods driven in the transport direction with elastic grippers.
  • the rods provided with elastic grippers formed stamped parts that have been shaped out of the sheet plane can be conveyed quickly.
  • a finished stamped part can be produced in rapid cadence per ram stroke, but if such a stamped part is to be additionally partially provided with a 100% smooth cut surface at the functional points, it must, as mentioned above , further processed.
  • JP-A-58-65 526 describes a press with a single tool.
  • multi-stage machining of workpieces takes place in one working stroke.
  • a hydraulic block is installed in the upper and lower part of the press.
  • One of the working stages can be designed as a fineblanking stage.
  • the invention specified in claim 1 has for its object to provide a press for processing workpieces made of sheet metal or cast or forged blanks, in which fineblanking operations are combined with the conventional operations of punching and / or drawing technology in a single processing machine. This should make it possible to produce complicated stamped parts with 100% smooth cut surfaces quickly and inexpensively.
  • At least one machining station of the tool is designed as a fineblanking tool, in the upper part and lower part of which a hydraulic block is installed as the upper and lower structure of the tool insert and as additional hydraulics for fineblanking, each of which Hydraulic block with the responsible tool insert used in an upper or lower change frame and can be controlled by its own drive means.
  • the upper interchangeable frame of the fineblanking tool can advantageously have a top plate and an upper clamping plate and the lower interchangeable frame a lower plate and a lower clamping plate, the drive means forming a separate unit from the interchangeable frames.
  • the fineblanking tool according to FIG. 3 consists of an upper part 2 and a lower part 3.
  • the upper part 2 comprises a hydraulic block 4 which on the one hand is attached to a head plate 8 and on the other hand is connected to an upper tool insert 17 as its superstructure.
  • the hydraulic block 4 and the upper tool insert 17 are inserted in a change frame 6 with the head plate 8 mentioned above.
  • the upper set 42 of the upper tool insert 17 is screwed to the interchangeable frame 6 by means of fastening screws 31.
  • the lower part 3 comprises a hydraulic block 4 ', which on the one hand is fastened to the lower plate 9 and on the other hand is connected to the lower tool insert 18 as its substructure.
  • the hydraulic block 4 'and the lower tool insert 18 are inserted in an interchangeable frame 6' with the lower plate 9 mentioned above.
  • the cutting plate 41 of the lower tool insert 18 is screwed to the interchangeable frame 6 'by means of the fastening screws 31.
  • FIG. 3 also schematically shows an assembly for supplying the hydraulic blocks 4, 4 'with pressure oil, which forms a separate unit from the frames 6, 6'.
  • the unit consists of a motor 56, a pump 19 and a memory 44. 58 is the liquid container.
  • Each hydraulic block 4, 4 ' has two piston cylinders. In the hydraulic block 4 there are cylinders 13, 14 and pistons 21, 22. In the hydraulic block 4 there are cylinders 15, 16 and pistons 23, 24. Via valves 57 and connections 5, pressure oil is supplied to the hydraulic blocks 4, 4 '.
  • the piston cylinders 13 to 16 act independently of one another and the pressures acting in them are individually adjustable via the valves 57 and can be switched on and off individually.
  • the piston 22 is in operative connection with a pressure pin 26 for counter-punch 32.
  • the piston 21 is in active connection with the pressure pin 27 for wipers 45.
  • the piston 24 is in active connection with the pressure pin 28 for ejector 38 and the piston 23 is in active connection with the pressure pin 29 for ejector 35 and counter-punch below 33.
  • tuning plates 39 are provided for the precise adjustment of the inner form punch 34 and the cutting punch 36, the counter punch below 33 and the insert 30 for the purpose of tuning after the sharp cutting.
  • the locking bolts 37 take over the securing of the position of the guide plate 40 to the lower tool insert 18. With 11 are centering pins for the tool inserts 17, 18, with 51 part position finder, with 59 ejector bolts.
  • Workpieces 1 which have a shape formed from a sheet metal plane can advantageously be produced on a transfer press 20, which is shown in FIGS. 1 and 2.
  • the fine blanking tool according to FIG. 3 is installed in this transfer press 20 in the last, seventh working stage.
  • the fineblanking tool according to FIG. 3 represents a tool set. In the last fineblanking stage, a 100% smooth cut surface is achieved at the functional locations of the stamped part 1.
  • the workpiece 1 is manufactured into a finely cut part 1 'in seven operations.
  • a punched piece is cut out of one of the material strips fed to the transfer press 20 with a ram 52 and a table 53 (FIG. SA).
  • the workpiece 1 is trimmed (change of ridge sides in the bending zone).
  • the third and fourth stages (FIGS. 50 and 5D) the workpiece is bent, in the fifth operation the angle and the height of the workpiece are set (FIG. 5E).
  • lubricating oil for the fineblanking process is sprayed onto the workpiece 1 and in the seventh operation (FIG. 5G) the fineblanking process is carried out by means of the built-in fineblanking tool according to FIG. 3.
  • the built-in fineblanking tool can take over the following operations: punching, cutting, trimming, cutting and cutting.
  • punching In this manufacturing method in a transfer press, the punched piece or workpiece 1 is conveyed into the individual work stages by means of bar grippers 10 with gripper tongs 12.
  • the waste from the normal punching stages migrates down through a table opening, not shown.
  • the waste 49 (slugs) produced during fineblanking are removed by means of swivel arms 48, which are fastened to the gripper tongs 12, via discharge plates 50.
  • all tools 25 cutting and forming tools
  • the fineblanking tool are mounted on a single common upper base plate 46 and a single common lower base plate 47. This results in a quick change of the entire tool set in the transfer press 20. If a working stage fails, only the tool assigned to it has to be dismantled and readjusted.
  • the fineblanking stage can be used at any stage position, as the optimal solution of the workpiece requires.
  • several fineblanking tools described above can work in different ways stages of the transfer press can be used. This is made possible by the fact that the fine blanking tool described above carries the additional hydraulics required for fine blanking.
  • FIGS. 6 and 7 The finely cut stamped part 1 'shown in FIGS. 6 and 7 was produced in a transfer press with the built-in fine blanking tool according to FIG. 3; the corresponding fineblanking processes are shown in FIGS. 8a-8f, which are also entered numerically in FIG. 9.
  • the fineblanking tool is open in the position shown in FIG. 8a.
  • the bent workpiece 1 lies on the lower tool insert 18.
  • the ram, not shown, of the transfer press is in the top dead center position I.
  • the ram runs down in the position shown in FIG. 8b.
  • the wipers 45 touch the workpiece 1, the piston 21 in the cylinder 13 is displaced upwards.
  • the plunger is now in position 11.
  • the entire upper tool insert 17 is in contact with the workpiece 1, which is clamped between the upper 17 and lower 18 tool inserts.
  • the finder 51 is inserted into the corresponding hole in the workpiece 1 and in the ejector 35 of the lower tool insert 18 and centers the part position.
  • the plunger is in position 111. In the position shown in FIG.
  • the plunger continues to run down.
  • the piston 23 is displaced downward. Now the bending zone of the workpiece 1 is clamped between the upper 17 and the lower 18 tool insert.
  • the plunger is in position IV.
  • the actual cutting process now begins, whereby the pistons 21 and 22 are displaced upwards and the pistons 23 and 24 downwards.
  • the plunger is in the bottom dead center position V.
  • the plunger In the position shown in FIG. 8e, the plunger is in the bottom dead center position V.
  • the pressure effect of the pistons 21 to 24 is switched off and the plunger moves up again back.
  • position VI of the plunger the pressure of the piston 23 is switched on again, whereby the stamped part 1 is ejected upwards.
  • FIG. 9 shows the movement sequences of the ram 52 of the transfer press 20 and the individual pistons 21 to 24 of the fineblanking tool installed in the transfer press. They are coordinated with each other.
  • the pressing force generated by the pistons 21 to 24 is up to 75% and the counterforce up to 30% of the cutting force generated by the ram.
  • the sequence of movements of the ram as well as the individual pistons of the hydraulic cylinders as well as the number of functions required and thus the cylinder is determined by the shape of the workpiece.
  • FIG. 3 has, in addition to the top plate 8 and the bottom plate 9, an upper 54 and a lower 55 clamping plate.
  • These clamping plates which run approximately in the middle height of the top set 42 and the cutting plate 41, serve to clamp the fineblanking tool on a fineblanking press.
  • a recess 60 is made in the ram 52 and in the table 53, in which recesses the head plate 8 with the hydraulic block 4 and on the other hand the lower plate 9 with the hydraulic block 4 'are accommodated.
  • the fineblanking tool is used here on the fineblanking press for testing (see Fig. 4).
  • the sheet metal part is produced in individual tools in individual work stages, with one finished part being produced per ram stroke.
  • the ram movement of the transfer press takes place from top to bottom, the table is fixed.
  • the fine blanking tool described can be optimally designed as a single tool.
  • the individual tools can be manufactured independently of one another.
  • the blank can be optimized and used as the last tool.
  • Each tool can be tested and optimized separately as a single tool, using a normal fineblanking machine or a single-stage press. After optimization, all tools are mounted on a common upper and lower base plate (see Fig. 1) and equipped with a set of bar grippers. If a tool fails, only this has to be dismantled and readjusted.
  • the hydraulics are supplied by a separate unit, the switching impulses for the control come from the ram command.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Punching Or Piercing (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP85810531A 1984-11-28 1985-11-12 Presse zum Bearbeiten von Werkstücken aus Metall Expired - Lifetime EP0183648B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5683/84A CH669748A5 (es) 1984-11-28 1984-11-28
CH5683/84 1984-11-28

Publications (2)

Publication Number Publication Date
EP0183648A1 EP0183648A1 (de) 1986-06-04
EP0183648B1 true EP0183648B1 (de) 1990-02-28

Family

ID=4297638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810531A Expired - Lifetime EP0183648B1 (de) 1984-11-28 1985-11-12 Presse zum Bearbeiten von Werkstücken aus Metall

Country Status (6)

Country Link
US (2) US4905556A (es)
EP (1) EP0183648B1 (es)
JP (1) JPS61186134A (es)
CH (1) CH669748A5 (es)
DE (1) DE3576129D1 (es)
SU (1) SU1595333A3 (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004049149A1 (de) * 2004-10-07 2006-04-13 Feintool International Management Ag Verfahren und Vorrichtung zum Herstellen und/oder Bearbeitung von Teilen
DE102005007215B4 (de) * 2005-02-16 2007-06-28 Feintool International Management Ag Vorrichtung zum Bearbeiten eines Werkstückes
DE102004032826B4 (de) * 2004-07-06 2010-07-29 Feintool International Management Ag Verfahren zum Herstellen von Stanzteilen

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JP4472958B2 (ja) * 2003-09-10 2010-06-02 アイシン・エィ・ダブリュ株式会社 順送りプレス加工装置
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CN101530880A (zh) * 2008-03-11 2009-09-16 鸿富锦精密工业（深圳）有限公司 模具及采用该模具的加工机
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US8695462B1 (en) 2010-10-07 2014-04-15 Jist Unlimited, LLC Adjustable wrench
ITMI20111378A1 (it) * 2011-07-25 2013-01-26 Corrada Spa Stampo per la tranciatura con almeno un dispositivo di rotazione differenziata del gruppo tranciante
EP2608299B1 (de) * 2011-12-22 2014-04-09 Feintool Intellectual Property AG Verfahren und Vorrichtung zum Herstellen von metallischen Bipolarplatten
DE102013015180A1 (de) * 2013-09-11 2015-03-12 Webo Werkzeugbau Oberschwaben Gmbh Verfahren und Vorrichtung zum Präzisionsschneiden von Werkstücken in einer Presse
CA2929121C (en) * 2013-11-22 2021-10-19 Standard Lifters, Inc. Guide pin head
US10016803B2 (en) * 2014-05-09 2018-07-10 Honda Motor Co., Ltd. Blanking die and method of blanking sheet metal therewith
ES2665767T3 (es) * 2015-07-06 2018-04-27 Feintool International Holding Ag Equipo y procedimiento para retirar/expulsar una retícula de estampado/pieza conformada interiormente y eyección de una pieza cortada en una prensa de corte de precisión
AT518154B1 (de) * 2015-12-14 2017-10-15 Mat Center Leoben Forschung Gmbh Verfahren und Vorrichtung zum Trennen eines Werkstückes
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CN107020314A (zh) * 2017-06-15 2017-08-08 合肥嫩芽科技有限公司 矿用托盘一次成型液压机
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004032826B4 (de) * 2004-07-06 2010-07-29 Feintool International Management Ag Verfahren zum Herstellen von Stanzteilen
DE102004049149A1 (de) * 2004-10-07 2006-04-13 Feintool International Management Ag Verfahren und Vorrichtung zum Herstellen und/oder Bearbeitung von Teilen
DE102005007215B4 (de) * 2005-02-16 2007-06-28 Feintool International Management Ag Vorrichtung zum Bearbeiten eines Werkstückes

Also Published As

Publication number Publication date
US4905556A (en) 1990-03-06
DE3576129D1 (de) 1990-04-05
EP0183648A1 (de) 1986-06-04
JPS61186134A (ja) 1986-08-19
US5054353A (en) 1991-10-08
CH669748A5 (es) 1989-04-14
SU1595333A3 (ru) 1990-09-23
JPH0221890B2 (es) 1990-05-16

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