US3681994A - Bend-shaping device - Google Patents

Bend-shaping device Download PDF

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Publication number
US3681994A
US3681994A US72775A US3681994DA US3681994A US 3681994 A US3681994 A US 3681994A US 72775 A US72775 A US 72775A US 3681994D A US3681994D A US 3681994DA US 3681994 A US3681994 A US 3681994A
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US
United States
Prior art keywords
tool
holder
ram
bend
movement
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
US72775A
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English (en)
Inventor
Vaclav Zbornik
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.)
Haemmerle AG Maschinenfabrik
Original Assignee
Haemmerle AG Maschinenfabrik
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 Haemmerle AG Maschinenfabrik filed Critical Haemmerle AG Maschinenfabrik
Application granted granted Critical
Publication of US3681994A publication Critical patent/US3681994A/en
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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
    • B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
    • B21D5/02—Bending sheet metal along straight lines, e.g. to form simple curves on press brakes without making use of clamping means
    • B21D5/0209—Tools therefor

Definitions

  • ABSTRACT A bend-shaping device with a movable ram and a work table in which a tool holder is fixed both on the ram and on the work table and in which the tool holder fixed to the table has a bottom-die with two working positions with which a first tool, fixed directly in the tool holder of the ram, and a second tool, displaceably connected to the tool holder, coact interchangeably.
  • the tool holder of said second tool is mounted on the tool holder of said first tool displacebly from the interposed position into an inoperative position approximately in the direction of withdrawal, while in the interposed position the second tool lies in the actuation path of said first tool and ispressed by this against the bottom die.
  • FIGZ BEND-SHAPING DEVICE The invention is particularly concerned with bendshaping apparatus of the kind in which a ram is moveable relative to a work-table, on which can be mounted a bottom-die, so that a tool supported in the tool-holder can be made by movement of the ram to coact with a working position in the bottom-die supported by the work-table.
  • bend-shaping apparatus comprising a work-table adapted to support a bottom-die having a first working position and at least one further working position, a ram moveable relative to said worktable, said ram being provided with a firsttool-holder adapted to support a first tool moveable with the ram and actuable directly thereby to coact with the first working position of the bottom-die, and in which there is provided at least one secondary tool-holder mounted upon the first tool-holder and displaceable between operative and inoperative positions, said secondary tool-holder (s) being adapted to support a further tool moveable with the ram and, when said secondary tool-holder is in its operative position, actuable indirectly thereby via a tool supported in said first tool-holder to coact with a further working position of said bottom-die, said secondary tool-holder(s) being displaceable from the operative to the inoperative position partly laterally but mainly by retraction along substantially the direction of movement of said ram.
  • the secondary tool holder can advantageously be mounted for pivotal movement about a pivot point fixedly mounted upon the first tool-holder, one end of the secondary tool-holder being adapted to support the further tool, while the first tool-holder interconnected with the secondary tool-holder at or adjacent its other end via a double-acting piston-and-cylinder assembly so as to permit the secondary tool-holder to be pivotted and thus the further tool to be shifted in and out of the operative position laterally with respect to the direction of movement of the ram.
  • the secondary tool-holder may conveniently include a pivotally-mounted piston-andcylinder assembly disposed substantially parallel to the direction of movement of said rarn, at one end adapted to support said further tool and at or adjacent the other end remote therefrom interconnected with said first tool-holder.
  • the secondary tool-holder can also advantageously be mounted laterally of and substantially co-axially with the first tool-holder, and can then be bodily displaced laterally relative to the first toolholder by means of at least one double-acting pistonand-cylinder assembly, and preferably two such assemblies, via which it is mounted thereon.
  • the secondary tool-holder can advantageously include a piston-and-cylinder assembly disposed substantially parallel to the direction of movement of the ram, at one end adapted to support the further tool, which thus permits retraction thereof in substantially the direction of movement of the ram.
  • the bend-shaping apparatus preferably incorporates both a first tool supported in the first tool-holder and at least one further tool supported in at least one of the secondary. tool-holders, and the second tool (5) desirably will have a cut-away portion, forming a step against which (in the operative position of the second tool) the first tool abuts.
  • the secondary tool-holder is constructed as a two-armed lever supported intermediate its ends at pivot point fixedly secured to the first tool-holder, the further tool being supported at one end of the two-armed lever while the other, remote end of the secondary tool-holder is connected to the first tool-holder by means of a reciprocable pivotting piston-andcylinder assembly.
  • FIG. 1 is a schematic representation, in elevation, of one preferred embodiment of the invention.
  • FIG. 2 is a representation, similar to that of FIG. 1, of another embodiment of the invention.
  • a toolholder 1 extends vertically downwards from the ram R of the bend-shaping apparatus.
  • Supported upon the tool-holder 1 is an interchangeable bending tool 2.
  • the bending tool 2 coacts with the working position 6, while a second tool 8 coacts with the working position 7.
  • the arrangement therefore is such that the tool 8 can be shifted from the operative, interposed position shown into an inoperative position in which on the movement of the ram the bending tool 2 becomes effective.
  • the tool 8 includes a laterial, step-shaped recess 9, in which the tool 2 is received in the operative, interposed position of the tool 8, so that the pressure from the tool holder 1 necessary for shaping is applied directly to the tool 8.
  • the tool 8 is mounted upon a piston rod 10, secured to a piston 1 1 which fits within a double-acting working cylinder 12.
  • the working cylinder 12 is pivotally mounted upon the tool holder 1, the fixing position being denoted by 13.
  • the other end of the working cylinder 12 remote from the tool 8 is connected pivotally to the tool holder 1 by means of a reciprocable piston-and-cylinder assembly comprising cylinder 14 and piston 15 and piston rod 16.
  • This reciprocable cylinder 14 is also double-acting.
  • the working cylinder 12 is mounted upon the tool-holder 1, both at the top and bottom of the former, via respective double-acting piston-and-cylinder assemblies, designated 17 and 18. If the two piston-and-cylinder assemblies 17 and 18 are actuated simultaneously the working cylinder 12 together with piston rod 10 and tool 8 will be bodily displaced laterally while remaining parallel to the tool-holder 1, so that the tool 8 is removed from the region of the bending tool 2, whereupon the latter can be brought into operation.
  • Bend-shaping apparatus comprising a work-table adapted to support a bottom-die having a first working position and at least one further workingposition, a ram moveable relative to said work-table, said ram being provided with a first tool-holder adapted to support a first tool moveable with the ram and actuable directly thereby to coact with the first working position of the bottom-die, and in which there is provided at least one secondary tool-holder mounted upon the first tool-holder and displaceable between operative and inoperative positions, said secondary tool-holder being adapted to support a further tool moveable with the ram and, when said secondary tool-holder is in its operative position, actuable indirectly thereby via a tool supported in said first tool-holder to coact with a further working position of said bottom-die, said secondary tool-holder being displaceable from the operative to the inoperative position partly laterally but mainly by retraction in substantially the direction of movement of said ram.
  • said secondary tool-holder includes a piston-v and-cylinder assembly disposed substantially parallel to the direction of movement of the ram, at one end adapted to support the further tool, and thus permitting retraction thereof in substantially the direction of movement of the ram.
  • Bend-shaping apparatus also incorporating a first tool supported in said first toolholder and a further tool supported in said secondary tool-holder, the second tool having a cut-away portion forming a step against which, in the operative position of the second tool, abuts the first tool.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
US72775A 1969-09-22 1970-09-16 Bend-shaping device Expired - Lifetime US3681994A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT897469A AT293823B (de) 1969-09-22 1969-09-22 Biegebearbeitungseinrichtung

Publications (1)

Publication Number Publication Date
US3681994A true US3681994A (en) 1972-08-08

Family

ID=3610102

Family Applications (1)

Application Number Title Priority Date Filing Date
US72775A Expired - Lifetime US3681994A (en) 1969-09-22 1970-09-16 Bend-shaping device

Country Status (6)

Country Link
US (1) US3681994A (de)
AT (1) AT293823B (de)
CH (1) CH517536A (de)
DE (1) DE2043883C3 (de)
FR (1) FR2062950B1 (de)
GB (1) GB1270356A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845655A (en) * 1972-09-18 1974-11-05 Widder Corp Press brakes
US4509357A (en) * 1982-06-07 1985-04-09 Hammerle Ag Maschinenfabrik Tool arrangement for a bending press
US4691553A (en) * 1986-03-06 1987-09-08 Barber Stephen C Safety power tool
US4805438A (en) * 1987-03-05 1989-02-21 Metal Building Components Incorporated Hemming die fixture for metal presses
US6644091B2 (en) * 2000-12-15 2003-11-11 Hon Hai Precision Ind. Co., Ltd. Lower die for a bending machine
US20060037378A1 (en) * 2004-08-17 2006-02-23 Jin-Chu Lu Method for folding and curving of a metallic plate
US7168286B1 (en) * 2005-10-29 2007-01-30 Pelech Bruno J Device and method for securing a punch tool to a ram portion of a press brake
US20080202192A1 (en) * 2007-02-15 2008-08-28 Helmut Krumpen Pressing device for forming steel sheet blanks into clips
US20100018283A1 (en) * 2008-02-19 2010-01-28 Martin Tidl Folding device for a bending press, in particular an edging press

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4315706C2 (de) * 1993-05-13 1996-02-01 Haemmerle Ag Abkantpressen zur Bildung von Falznuten an Blechprofilen
DE4335174A1 (de) * 1993-10-15 1995-04-20 Haemmerle Ag Verfahren zum Biegen von Blechen und Abkantpresse zur Durchführung des Verfahrens

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936808A (en) * 1956-09-07 1960-05-17 Du Mont Allen B Lab Inc Wire forming device
US3509757A (en) * 1963-10-11 1970-05-05 Haemmerle Ag Maschf Device for bending a workpiece

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1123361A (en) * 1964-12-15 1968-08-14 Thornber Brothers Ltd Apparatus for treating workpieces

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936808A (en) * 1956-09-07 1960-05-17 Du Mont Allen B Lab Inc Wire forming device
US3509757A (en) * 1963-10-11 1970-05-05 Haemmerle Ag Maschf Device for bending a workpiece

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845655A (en) * 1972-09-18 1974-11-05 Widder Corp Press brakes
US4509357A (en) * 1982-06-07 1985-04-09 Hammerle Ag Maschinenfabrik Tool arrangement for a bending press
US4691553A (en) * 1986-03-06 1987-09-08 Barber Stephen C Safety power tool
US4805438A (en) * 1987-03-05 1989-02-21 Metal Building Components Incorporated Hemming die fixture for metal presses
US6644091B2 (en) * 2000-12-15 2003-11-11 Hon Hai Precision Ind. Co., Ltd. Lower die for a bending machine
US20060037378A1 (en) * 2004-08-17 2006-02-23 Jin-Chu Lu Method for folding and curving of a metallic plate
US7051567B2 (en) * 2004-08-17 2006-05-30 Tieh Chin Kung Metal Industry Co., Ltd. Method for folding and curving of a metallic plate
US7168286B1 (en) * 2005-10-29 2007-01-30 Pelech Bruno J Device and method for securing a punch tool to a ram portion of a press brake
US20080202192A1 (en) * 2007-02-15 2008-08-28 Helmut Krumpen Pressing device for forming steel sheet blanks into clips
US7694544B2 (en) * 2007-02-15 2010-04-13 Airbus Operations Gmbh Pressing device for forming steel sheet blanks into clips
US20100018283A1 (en) * 2008-02-19 2010-01-28 Martin Tidl Folding device for a bending press, in particular an edging press
US7997115B2 (en) * 2008-02-19 2011-08-16 Trumpf Maschinen Austria Gmbh & Co. Kg Folding device for a bending press, in particular an edging press

Also Published As

Publication number Publication date
DE2043883A1 (de) 1971-04-15
FR2062950A1 (de) 1971-07-02
FR2062950B1 (de) 1973-08-10
CH517536A (de) 1972-01-15
DE2043883C3 (de) 1974-05-22
DE2043883B2 (de) 1973-10-31
GB1270356A (en) 1972-04-12
AT293823B (de) 1971-10-25

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