EP0312808A3 - Press for drawing sheet components - Google Patents

Press for drawing sheet components Download PDF

Info

Publication number
EP0312808A3
EP0312808A3 EP88115855A EP88115855A EP0312808A3 EP 0312808 A3 EP0312808 A3 EP 0312808A3 EP 88115855 A EP88115855 A EP 88115855A EP 88115855 A EP88115855 A EP 88115855A EP 0312808 A3 EP0312808 A3 EP 0312808A3
Authority
EP
European Patent Office
Prior art keywords
sheet metal
force
die cushion
press
metal holder
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.)
Withdrawn
Application number
EP88115855A
Other languages
German (de)
French (fr)
Other versions
EP0312808A2 (en
Inventor
Oswald Ostrowski
Volker Dr. Thoms
Bernd Dr. Fugger
Werner Hezel
Thomas Hunyar
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.)
Daimler Benz AG
Original Assignee
Daimler Benz 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 Daimler Benz AG filed Critical Daimler Benz AG
Publication of EP0312808A2 publication Critical patent/EP0312808A2/en
Publication of EP0312808A3 publication Critical patent/EP0312808A3/en
Withdrawn legal-status Critical Current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
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/20—Deep-drawing
    • B21D22/26—Deep-drawing for making peculiarly, e.g. irregularly, shaped articles
    • 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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10—Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/14—Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically

Abstract

Die Erfindung betrifft eine Presse zum Ziehen von Blech­ teilen (1), bei dem die Blechhalterkraft während des Ziehvor­ ganges durch einen Ziehapparat (5) der Umformmaschine auf den Blechhalter (13) des Werkzeuges (14) aufgebracht wird. Um die Blech­ halterkraft reproduziergenau und trägheitsarm, vorzugsweise auch bereichsweise individuell einstellen und auf dem vor­ eingestellten Wert halten zu können, wird das bzw. werden die Ziehapparate so ausgebildet, daß während des Ziehvor­ ganges ein hydraulisch gesteuertes Ziehkissen (7) zum Einsatz kommt. Es wird für das bzw. jedes Ziehkissen einer Presse eine hydraulische Blechhalterkraftregelung vorgesehen. Über einen dem bzw. jedem Ziehkissen zugeordneten Druck- oder Kraftgeber (16) kann die zugehörige Blechhalterkraft gemessen werden. Über eine aus Regler und elektrohydraulisch vor­ steuerbaren Drosselventil gebildete Regelstrecke kann je­ weils der kraftbestimmende Druckraum des Ziehkissens indi­ viduell auf den erforderlichen Druck eingeregelt werden. Diese Regelstrecke arbeitet trägheitsarm und weitgehend hysteresefrei, so daß auch während eines Preßzyklus' der Sollwert für die Blechhalterkraft nach einem sich wieder­ holenden Funktionsablauf geändert werden kann. The invention relates to a press for drawing sheet metal divide (1), in which the sheet metal holder force during the drawing ganges through a drawing device (5) of the forming machine on the Sheet metal holder (13) of the tool (14) is applied. Around the tin holder force reproducible and low inertia, preferably also individually adjust in areas and on the front To be able to hold the set value will or will the pullers are designed so that during the pulling a hydraulically controlled die cushion (7) is used is coming. It is for the or each die cushion of a press a hydraulic plate holder force control is provided. over a pressure or assigned to the or each die cushion Force sensor (16) can measure the associated sheet metal holder force will. Via a controller and electro-hydraulic controllable throttle valve formed control path can ever because the force-determining pressure space of the die cushion indi be adjusted to the required pressure. This controlled system works with little inertia and largely free of hysteresis, so that even during a press cycle Setpoint for the sheet metal holder force after one again fetching functional sequence can be changed.

EP88115855A 1987-10-21 1988-09-27 Press for drawing sheet components Withdrawn EP0312808A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3735581 1987-10-21
DE19873735581 DE3735581C1 (en) 1987-10-21 1987-10-21 Press for pulling sheet metal parts

Publications (2)

Publication Number Publication Date
EP0312808A2 EP0312808A2 (en) 1989-04-26
EP0312808A3 true EP0312808A3 (en) 1989-10-18

Family

ID=6338757

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115855A Withdrawn EP0312808A3 (en) 1987-10-21 1988-09-27 Press for drawing sheet components

Country Status (4)

Country Link
EP (1) EP0312808A3 (en)
JP (1) JPH01127118A (en)
DD (1) DD283086A5 (en)
DE (1) DE3735581C1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3744177A1 (en) * 1987-12-24 1989-07-06 Audi Ag Method for deep-drawing blanks, in particular deep-drawn sheets for motor-vehicle body elements
DE3915795C1 (en) * 1989-05-13 1991-01-31 Maschinenfabrik Mueller-Weingarten Ag, 7987 Weingarten, De
IT1239856B (en) * 1990-01-24 1993-11-15 Fiat Auto Spa PROCEDURE FOR THE MOLDING OF SHEETS AND HYDRAULIC PRESS FOR THE REALIZATION OF THIS PROCEDURE.
DE59101219D1 (en) * 1990-04-23 1994-04-28 Mueller Weingarten Maschf Drawing device in a press for drawing sheet metal parts.
DE4132607B4 (en) * 1991-10-01 2004-05-19 Umformtechnik Erfurt Gmbh Method and device for target-specific tool setting
DE4229155C2 (en) * 1992-09-01 1994-06-23 Daimler Benz Ag Process for automatic, iterative process optimization of drawing processes in presses
DE4405909A1 (en) * 1994-02-24 1995-08-31 Erfurt Umformtechnik Gmbh Method and circuit arrangement for interrupting and continuing the drawing process on double-acting presses, in particular hydraulic presses
DE4441562A1 (en) * 1994-11-23 1996-05-30 Erfurt Umformtechnik Gmbh Length compensation device in a clamping device between the upper and lower tool of a press
DE10300630B4 (en) 2003-01-10 2005-03-24 Daimlerchrysler Ag Molding facility
GB2406817B (en) * 2003-01-10 2005-06-15 Daimler Chrysler Ag Moulding device
DE102015224778B4 (en) 2015-12-10 2021-03-11 Bayerische Motoren Werke Aktiengesellschaft Pressure pin of a press and press with pressure pin
JP6767063B2 (en) * 2017-03-17 2020-10-14 株式会社ヒロテック Draw molding equipment
DE102017214660B4 (en) * 2017-08-22 2022-12-15 Bayerische Motoren Werke Aktiengesellschaft Pressure bolt of a press and press with pressure bolt
US11020786B2 (en) * 2017-09-25 2021-06-01 Oakland University System for controlling the restraining force applied to a panel during a drawing operation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407864B2 (en) * 1974-02-19 1976-02-19 Maschinenfabrik Weingarten Ag, 7987 Weingarten PUSH PIN ARRANGEMENT ON A PUSH CUSHION FOR PRESSING
DE2609916A1 (en) * 1976-03-10 1977-09-15 Etscheid Ohg Hermann HOLD-DOWN DEVICE ON A DEEP DRAWING PRESS
DE3406526A1 (en) * 1984-02-23 1985-09-12 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Sliding table with built-in blank-holder frame
EP0173755A1 (en) * 1984-06-29 1986-03-12 L. SCHULER GmbH Drawing device in a press
US4635466A (en) * 1984-04-27 1987-01-13 Kabushiki Kaisha Komatsu Seisakusho Die cushion apparatus for use in a press machine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735158C (en) * 1939-04-30 1943-05-07 Messerschmitt Boelkow Blohm Device for controlling the pressure of a pneumatic or hydropneumatic fold holder of a sheet metal drawing press
US3108470A (en) * 1960-03-28 1963-10-29 Danly Mach Specialties Inc High speed tonnage indicator for power press
JPS532423B2 (en) * 1973-09-27 1978-01-27
JPS558307A (en) * 1978-06-30 1980-01-21 Hideo Ichikawa Hydraulic press for deep drawing work
DE2833829C2 (en) * 1978-08-02 1986-11-27 L. Schuler GmbH, 7320 Göppingen Circuit arrangement for an actuator of a slide adjustment
JPS5949120B2 (en) * 1978-12-14 1984-11-30 株式会社サム電子機械 hydraulic compression device
CS217858B1 (en) * 1981-02-09 1983-01-28 Jaroslav Pecha Method of the metal sheet shaping and device for executing the said method
JPS59212200A (en) * 1983-05-18 1984-12-01 Toyota Motor Corp Control device for dynamic characteristic of press load
JPS609526A (en) * 1983-06-28 1985-01-18 Toyota Motor Corp Method and device for controlling pressing force of blank holder
EP0151198B1 (en) * 1984-02-03 1989-01-04 L. SCHULER GmbH Pressure control apparatus in presses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407864B2 (en) * 1974-02-19 1976-02-19 Maschinenfabrik Weingarten Ag, 7987 Weingarten PUSH PIN ARRANGEMENT ON A PUSH CUSHION FOR PRESSING
DE2609916A1 (en) * 1976-03-10 1977-09-15 Etscheid Ohg Hermann HOLD-DOWN DEVICE ON A DEEP DRAWING PRESS
DE3406526A1 (en) * 1984-02-23 1985-09-12 Maschinenfabrik Müller-Weingarten AG, 7987 Weingarten Sliding table with built-in blank-holder frame
US4635466A (en) * 1984-04-27 1987-01-13 Kabushiki Kaisha Komatsu Seisakusho Die cushion apparatus for use in a press machine
EP0173755A1 (en) * 1984-06-29 1986-03-12 L. SCHULER GmbH Drawing device in a press

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Also Published As

Publication number Publication date
DD283086A5 (en) 1990-10-03
DE3735581C1 (en) 1988-05-11
EP0312808A2 (en) 1989-04-26
JPH01127118A (en) 1989-05-19

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