EP0453955B1 - Drawing device in a press for drawing of sheet metal formed parts - Google Patents

Drawing device in a press for drawing of sheet metal formed parts Download PDF

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Publication number
EP0453955B1
EP0453955B1 EP91106194A EP91106194A EP0453955B1 EP 0453955 B1 EP0453955 B1 EP 0453955B1 EP 91106194 A EP91106194 A EP 91106194A EP 91106194 A EP91106194 A EP 91106194A EP 0453955 B1 EP0453955 B1 EP 0453955B1
Authority
EP
European Patent Office
Prior art keywords
sheet metal
pressure
metal holder
bolts
force
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
EP91106194A
Other languages
German (de)
French (fr)
Other versions
EP0453955A1 (en
Inventor
Klaus Dr.-Ing. Siegert
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.)
Maschinenfabrik Mueller-Weingarten AG
Mueller Weingarten AG
Original Assignee
Maschinenfabrik Mueller-Weingarten AG
Mueller Weingarten 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
Priority to DE4012828 priority Critical
Priority to DE4012828 priority
Application filed by Maschinenfabrik Mueller-Weingarten AG, Mueller Weingarten AG filed Critical Maschinenfabrik Mueller-Weingarten AG
Publication of EP0453955A1 publication Critical patent/EP0453955A1/en
Application granted granted Critical
Publication of EP0453955B1 publication Critical patent/EP0453955B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/12Devices controlling or operating blank holders independently, or in conjunction with dies mechanically
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/04Blank holders; Mounting means therefor
    • B21D24/08Pneumatically or hydraulically loaded blank holders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D24/00Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/10Devices controlling or operating blank holders independently, or in conjunction with dies
    • B21D24/14Devices controlling or operating blank holders independently, or in conjunction with dies pneumatically or hydraulically

Description

  • The invention relates to a drawing device in a press for drawing sheet metal parts according to the preamble of claim 1.
  • State of the art:
  • Known hydraulic drawing devices for presses for drawing sheet metal parts generally consist of an upper, vertically displaceable drawing ram as the upper part of the tool and a lower drawing punch, which is stationary on a press table, as the lower part of the tool, between which the sheet metal part to be formed is inserted. In order to avoid crack formation in the wall or folds or corrugations in the surface structure of the workpiece, in particular in the case of large-area workpieces or also in the case of complicatedly shaped parts, this is done by a during the actual drawing process Drawing frame, hold-down or sheet metal holder held, which surrounds the drawing punch in one or more parts. As can be seen, for example, from EP 0 074 421, such a sheet metal holder is supported from below by a number of pressure bolts, which in turn are supported against a vertically movable pressure plate, die cushion or pressure cheek. From DE 32 42 705 C2 of the applicant, it has become known in this regard to regulate the height of the pressure cheek in its corner regions via a plurality of pressure cylinder units which can be regulated separately from one another in order to apply a force of different strength to the pressure bolts above. As a result, the pressure cheek can be acted upon with locally differently desired forces in any fine adjustment during the entire drawing process, which transmits these forces further via the pressure bolts to the sheet metal holder in order to adapt its contact pressure to the necessary requirements.
  • The last-mentioned arrangement allows good and partial support of the pressure cheek, so that tilting can largely be avoided if the pressure cheek is eccentrically loaded. However, the use of bolts of more or less the same length, which are inserted in number depending on the application of force to the sheet metal holder, has the disadvantage that they "dig" into both the sheet metal holder and the pressure cheek and, if necessary, additionally can be surfaced. As a result, reproducible conditions cannot usually be achieved when the tool is reinstalled.
  • In order to avoid the use of pluggable pressure bolts, it has therefore also been proposed that the sheet metal holder be arranged directly by several arranged underneath Cylinder units are supported, which act directly on the sheet metal holder by means of their own pressure displacement control or regulation. Four cylinders were generally used to support the sheet metal frame symmetrically. Such an arrangement has the advantage that precise control or regulation of the application of force to the sheet metal holder is possible. However, the small number of cylinder units supporting the sheet metal holder has the disadvantage that the support is inadequate even in certain areas and in the case of parts of complex structure. Instead of four cylinders, a large number of cylinders could be arranged below the sheet metal holder in the press table. Here, however, there is a spatial limitation, since each cylinder must be provided with a proportional valve control in order to be able to implement a separate pressure / displacement control or regulation. Such a route is likely to remain very costly.
  • From EP 0 173 755 A1, a drawing device for a press according to the type of the present invention has also become known, in which a number of additional printing cylinder units are provided between the pressure cheek and the sheet metal holder. The height of the pressure cheek itself is controlled by at least one pressure unit underneath. Both the individual printing cylinders between the printing cheek and the sheet metal holder and the printing unit for the printing cheek itself can be actively or passively subjected to control or regulation.
  • In this known device, the pressurization of the sheet metal holder and thus that of counteracting force of the sheet metal holder acting against the drawing ram essentially due to the pressure cylinder units arranged between the sheet metal holder and the pressure cheek. These are each designed as a stationary pressure cylinder with a continuous piston rod projecting on both sides, the lower piston rod part acting on the pressure cheek and the upper piston rod part acting on the sheet metal holder. A generally provided passive regulation of the outflow of the pressure medium brings about the desired counter-holding force on the sheet metal holder, the counter-holding force between the sheet metal holder and the upper part of the tool during the drawing process being generated exclusively by the pressure cylinders arranged above the pressure cheek with appropriate control. The pressure cheek of the known device, which can be pressurized in the center from below, carries out a movement sequence which is synchronized with the ram movement and serves on the one hand to bring the sheet metal holder up to the position for inserting the workpiece and on the other hand to eject the workpiece into the transport plane. A locally different support and force application of this pressure cheek during the drawing process is not provided.
  • Advantages of the invention
  • The arrangement according to the invention has the advantage over the known devices that various known systems are combined and optimized by means of new measures. Thus, the invention provides that, on the one hand, the pressure cheek can be subjected to forces of different localities in any desired fine tuning even during the entire drawing process, so that already this enables control or regulation of the application of force to the sheet metal holder by the known four-point control or regulation. It is provided that the counterforce on the sheet metal holder is additionally generated via height-adjustable bolts, which are supported on the pressure cheek, the bolts being distributed over the entire surface of the sheet metal holder and, depending on the necessary number, supporting the sheet metal holder from below. In order to produce reproducible values with regard to a possible deformation of the bolts by upsetting or a possible "digging in" of the bolts both in the sheet metal holder and in the pressure cheek or to eliminate their influence on errors, the invention provides that the bolts provided with an additional drive in their vertical movement are program-controlled. The bolts are therefore not inserted according to their required length, but are inserted vertically in a program-controlled manner using a separate drive.
  • The drive is preferably designed as a mechanically adjustable quill, which is connected to the pressure cheek. In an advantageous development of the invention, a force sensor is provided which detects the required supporting force per bolt, whereby each bolt movement can be force-controlled by means of a path infeed. For this purpose, a distance measurement is provided on each bolt.
  • Further details and advantages of the invention are shown in the drawing and explained in more detail in the following description. Show it
  • Fig. 1
    a longitudinal section through the pulling device according to the invention and
    Fig. 2
    a plan view of the press table with the arrangement of the pressure cheek force application points and the openings for possible bolt arrangements.
  • The drawing device 1 shown in simplified form in FIG. 1 serves to pull a sheet metal part 2. For this purpose, the press has a tool upper part 3 designed as a plunger 3 and vertically displaceable and a tool lower part 5 resting on a stationary press table 4 and designed as a punch 5. The drawing punch 5 is surrounded by a one-part or multi-part drawing frame 6 designed as a sheet metal holder 6, which fixes the sheet metal part 2 together with the associated peripheral edge of the drawing ram 3 during the forming process. The sheet metal holder 6 is non-positively connected to a pressure cheek 8 via a plurality of pressure bolts 7. The rectangular pressure cheek 8, also called die cushion, is supported in its four corner areas by piston rods 9 of a pressure unit 11 which can be adjusted by means of a proportional valve 10 and is adjustable in height. For this purpose, a pressure cylinder 12 with a pressure piston 13 is provided, wherein each of the four pressure units 11 (see FIG. 2) can be regulated individually and independently of one another. As a result, the pressure cheek 8 can be acted upon with locally different desired forces in any fine tuning and can thus be adjusted to different heights in the corner regions. This arrangement of the pressure cheek control is explained in DE 32 42 705 C2 of the applicant. The counterforce required between the sheet holder 6 and the ram 3 when the sheet metal part 2 is being drawn is therefore first applied to the pressure cheek 8 by the pressure regulating device 11 accomplished. This so-called four-point control is carried out in such a way that the pressure cheek 8, on which the sheet metal holder 6 is supported by bolts 7, can be adjusted individually in its four corner regions with regard to its height adjustment, the printing units 11 being the pressure / Path-controllable or adjustable lifting cylinders are formed.
  • This rule is quite sufficient for geometrically simple shaped sheet metal parts. However, there are a large number of workpieces in which such a four-point support is insufficient because the parts are eccentric and not symmetrical. In Fig. 2, for example, a rear side member 18 of a car is shown in dashed lines, which would be insufficiently supported in the obliquely hatched area 19, 19 'by a four-point support of the printing units 11. The invention therefore provides, as shown in FIG. 2, that the press table 4 is provided with a close-meshed matrix network with through holes 14 for the bolts 7, which support the sheet metal holder 6 in many ways. As a result, the sheet metal holder 6 can lie very closely against the drawing die 5 and support the sheet metal part directly adjacent to the drawing die. The press table 4 shown in plan view in FIG. 2 therefore contains a close-meshed network of through-bores 14 for the pressure bolts 7, which closely surround the punch 5. In the exemplary embodiment, only the two bores shown with 14 'are not covered with bolts 7.
  • According to the invention, all bolts 7 are provided with an additional drive 15, which ensures that the respective bolt 7 can be moved vertically. The bolts 7 on which the sheet metal holder 6 is supported are accordingly not plugged in as usual, but can be extended or retracted depending on the shape of the tool. For this purpose, a displacement sensor 16 is provided on each bolt 7 or on each drive unit 15, which detects the extended bolt length very precisely.
  • To ensure that the sheet metal holder 6 is loaded with the required supporting force per bolt, each bolt 7 is additionally provided with a force sensor 17, which enables a force-controlled displacement of the individual bolts 7. The force sensor 17 can be arranged between the drive 15 and the pressure cheek 8. In this way, a possible "digging" of a bolt 7 into the sheet metal holder or into the pressure cheek 8 is avoided in connection with the displacement measuring device 16. A possible compression of the bolts 7 can also be detected and compensated for or avoided in good time. The path infeed of each pin 7 when a certain force per pin is specified takes place in a control loop and is programmable by memory. In this way, based on the four-point pressure-displacement control or regulation, a tool-compatible point support with force control or regulation per bolt can take place.
  • This also provides the prerequisites for a reproducible press operation, since it can be ensured that the tool when reinstalled by adjusting the pressure-displacement profiles both at the four corner points of the printing units 11 and by adjusting the individual forces per bolt 7 or the approach paths is supported evenly or as desired per bolt 7 in accordance with the values retrievable from the program memory, as was the case, for example, in the previous forming.
  • It would also be possible not to provide all pressure bolts 7 with additional drives 15, but only where an additional force influence of the bolts 7 is desired. This can be carried out very easily with the invention, since the drive units 15 can optionally also be omitted and the bolts can be inserted in the usual way in this case.
  • The drive for the bolt 7 can each be designed as a mechanically adjustable quill 20 on which the pressure bolt is supported. In this case, a nut 21 is let into the pressure cheek 8, in which the quill 20 with the thread 22 moves in a height-adjustable manner. The sleeve is adjusted in the axial direction by motorized rotation of a splined shaft 23. The exact position of the quill 20 is carried out by a controlled stepper motor 24 with a corresponding reduction gear. In this case, the pressure sensor 17 'can be arranged between the drive spindle 20 and the pressure bolt 7. A hydraulic height adjustment of the pressure bolts can of course also be provided.

Claims (6)

  1. A drawing means (1) in a press for drawing sheet metal mouldings (2), with, constructed as a drawing ram (3), a movable tool upper part and, resting on a press table and constructed as a drawing punch (5), a stationary tool bottom part with, enclosing the drawing punch and constructed as a sheet metal holder (6), a drawing frame adapted to be subjected to force directly through a plurality of adjusting means and with at least one further pressure unit for the vertical displacement of a pressure web (8), whereby both the adjusting means associated with the sheet metal holder and also the pressure unit associated with the pressure web are each independently controllable or regulable, characterised in that during the drawing process the pressure web (8) is vertically adjustable by means of four pressure units (11) disposed in its corner portions, whereby a control or regulation by means of a proportional valve (10) is provided at each pressure unit (11) and in that the adjusting means (15, 7) disposed between sheet metal holder (6) and pressure web (8) are constructed as vertically adjustable thrust bolts (7) which have the effect of an additional or supplementary direct application of force to the sheet metal holder (6) during the drawing process.
  2. A drawing means according to Claim 1, characterised in that the adjusting means (15, 7) disposed between sheet metal holder (6) and pressure web (8) consist of a drive (15) supported on the pressure web (8) and having thrust bolts (7) disposed above them and adapted for vertical movement by the drive (15).
  3. A drawing means according to Claim 1 or 2, characterised in that the extensible length of the bolts can be in each case detected by a path sensor (16) and in that preferably the force on each bolt (7) can be measured by means of a force sensor (17).
  4. A drawing means according to Claim 1, 2 or 3, characterised in that the drive (15) for the bolt (7) and/or the bolt (7) itself is disposed in a close mesh matrix network, the press table (4) having a suitable bore image to allow the bolts (7) to pass through.
  5. A drawing means according to one or more of the preceding Claims, characterised in that the sheet metal holder is over its entire area subject to the action of vertically adjustable thrust bolts (7) and/or is alone partially subject to the action of thrust bolts (7).
  6. A drawing means according to one or more of the preceding Claims, characterised in that the drive (15) is constructed as a mechanically adjustable spindle sleeve (20), the spindle sleeve (20) being mounted for vertical adjustment while being capable of being driven by a servo-motor (24) and being rotatable in a nut (21) connected rigidly to the pressure web (8).
EP91106194A 1990-04-23 1991-04-18 Drawing device in a press for drawing of sheet metal formed parts Expired - Lifetime EP0453955B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4012828 1990-04-23
DE4012828 1990-04-23

Publications (2)

Publication Number Publication Date
EP0453955A1 EP0453955A1 (en) 1991-10-30
EP0453955B1 true EP0453955B1 (en) 1994-03-23

Family

ID=6404862

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106194A Expired - Lifetime EP0453955B1 (en) 1990-04-23 1991-04-18 Drawing device in a press for drawing of sheet metal formed parts

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US (1) US5138857A (en)
EP (1) EP0453955B1 (en)
ES (1) ES2052298T3 (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4112943A1 (en) * 1991-04-20 1992-10-22 Schuler Gmbh L Drawing device in the press table of a press
JP2722937B2 (en) * 1992-04-07 1998-03-09 トヨタ自動車株式会社 Wrinkle press load measuring device for press machine
US5419169A (en) * 1992-04-07 1995-05-30 Toyota Jidosha Kabushiki Kaisha Method and apparatus for adjusting press operating conditions depending upon dies used
US5457980A (en) * 1992-11-05 1995-10-17 Toyota Jidosha Kabushiki Kaisha Method and device for controlling, checking or optimizing pressure of cushion pin cylinders of press by discharging fluid or initial pressure
SE9301278L (en) * 1993-04-19 1994-05-24 Ap & T Tranemo Ab Hydraulic press for deep drawing
JP2776196B2 (en) * 1993-04-28 1998-07-16 トヨタ自動車株式会社 Diagnosis method and device for pressure equalizing cushion device
DE69509818T2 (en) * 1994-03-31 1999-10-28 Toyota Motor Co Ltd Method and device for optimizing the operating conditions of a press on the basis of the press operating environment and / or the sheet condition
NL1004193C2 (en) * 1996-04-01 1997-10-02 Sjoerd Meijer Method for processing metal sheet.
DE19641411A1 (en) * 1996-10-08 1998-04-09 Dieffenbacher Gmbh Maschf Hydraulic deep-drawing device
DE19702636A1 (en) * 1997-01-25 1998-07-30 Erhard Reitter Tool for deep drawing sheet metal parts
US5941110A (en) * 1997-05-12 1999-08-24 Northern University Adaptive method and apparatus for forming tailor welded blanks
DE19837083A1 (en) * 1998-08-17 2000-02-24 Volkswagen Ag Body component for the body of a motor vehicle
DE19953860A1 (en) * 1999-11-09 2001-05-17 Fraunhofer Ges Forschung Thermoforming press and method for thermoforming sheet metal workpieces
JP2002224897A (en) * 2001-02-02 2002-08-13 Komatsu Ltd Die cushioning device
DE102004049149A1 (en) * 2004-10-07 2006-04-13 Feintool International Management Ag Method and device for producing and / or processing parts
JP4704047B2 (en) * 2005-01-14 2011-06-15 コマツ産機株式会社 Die cushion device
EP1893394A1 (en) * 2005-05-04 2008-03-05 Philips Electronics N.V. High force indentation apparatus with high accuracy
US7387006B1 (en) * 2006-12-12 2008-06-17 Ford Motor Company Sensing system for sheet metal forming tool
US8511400B2 (en) 2010-04-05 2013-08-20 Schlumberger Technology Corporation Apparatus and method for acoustic measurements while using a coring tool
JP5680121B2 (en) * 2013-01-24 2015-03-04 アイダエンジニアリング株式会社 Die cushion device and die cushion control method for press machine
US9931684B2 (en) 2014-04-18 2018-04-03 Honda Motor Co., Ltd. Forming die and method of using the same
US10105742B2 (en) 2014-12-09 2018-10-23 Honda Motor Co., Ltd. Draw press die assembly and method of using the same
JP6002205B2 (en) * 2014-12-26 2016-10-05 アイダエンジニアリング株式会社 Cushion pad tilt confirmation device and method
US10786842B2 (en) 2018-09-12 2020-09-29 Fca Us Llc Draw-in control for sheet drawing
JP6670409B1 (en) * 2019-03-11 2020-03-18 マレリ株式会社 Press device and press method

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2040731A (en) * 1929-01-02 1936-05-12 Hydraulic Press Corp Inc Hydraulic metal drawing press and method for shaping metal articles
DE1040488B (en) * 1952-08-04 1958-10-09 Weingarten Ag Maschf Compressed air equipment for sheet metal forming machines
DD102089A1 (en) * 1973-02-28 1973-12-12
FR2502994B1 (en) * 1981-04-01 1983-07-01 Aerospatiale
DE3170614D1 (en) * 1981-09-12 1985-06-27 Schuler Gmbh L Deep-drawing arrangement for presses with mechanically driven drawing punch
DE3242705C2 (en) * 1982-11-19 1985-10-31 Maschinenfabrik Mueller-Weingarten Ag, 7987 Weingarten, De
US4489584A (en) * 1982-12-02 1984-12-25 Hartup Tool, Inc. Single stroke, draw and trim die assembly
EP0173755B1 (en) * 1984-06-29 1989-02-01 L. SCHULER GmbH Drawing device in a press
DE3431162A1 (en) * 1984-08-24 1986-03-06 Laepple August Gmbh & Co Press in particular to be used for drawing and drawing operations
DE3735582C1 (en) * 1987-10-21 1988-04-28 Daimler Benz Ag Double-acting press for pulling sheet metal parts
DE3735581C1 (en) * 1987-10-21 1988-05-11 Daimler Benz Ag Press for pulling sheet metal parts
DE3807683A1 (en) * 1988-03-09 1989-09-21 Schuler Gmbh L Drawing apparatus in drawing stages of presses
DE3915795C1 (en) * 1989-05-13 1991-01-31 Maschinenfabrik Mueller-Weingarten Ag, 7987 Weingarten, De

Also Published As

Publication number Publication date
US5138857A (en) 1992-08-18
ES2052298T3 (en) 1994-07-01
EP0453955A1 (en) 1991-10-30

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