US3509757A - Device for bending a workpiece - Google Patents

Device for bending a workpiece Download PDF

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Publication number
US3509757A
US3509757A US403141A US3509757DA US3509757A US 3509757 A US3509757 A US 3509757A US 403141 A US403141 A US 403141A US 3509757D A US3509757D A US 3509757DA US 3509757 A US3509757 A US 3509757A
Authority
US
United States
Prior art keywords
tool
bending
ram
holder
levers
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
US403141A
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English (en)
Inventor
Eduard Hanni
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 US3509757A publication Critical patent/US3509757A/en
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
    • 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
    • B21D5/0254—Tool exchanging
    • 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
    • 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

  • the present invention provides a device for bending work having a movable ram and a work table characterised in that a tool holder is secured on both the ram and work table, at least one of the tool holders having various bending tools which can be moved from a position of readiness into the working position, and whereby for each tool in the tool holder on the ram a complementary tool is provided in the tool holder arranged on the table.
  • the tool holders may conveniently be constructed as revolving heads and be adapted to pivot from the insertion position into a position for effecting the change of tools.
  • FIG. 1A shows a tool set secured to the ram of the first press
  • FIG. 1B shows the complementary tool set secured to the working table of the rst press
  • FIG. 2 shows the second press
  • the ram 1 is provided with a centering stop 2 having a centering face 3 against which a corresponding face of. ⁇ a tool set is located.
  • the tool set is constructed as a revolving tool holder 4 and is provided with insertable tools.
  • the tool holder 4 is rotatably mounted on an axle 8i, which is held at each end by a lever arm 9.
  • the lever arms 9 (only one of which is visible in the drawing) are pivotally mounted in the frame of the ram, for example, on an axle 10, the end of each lever arm remote from the axle 8 being in connection with an actuating rod 11.
  • the rod 11 is connected with a piston (not shown) of a cylinder 12 pivotally mounted on an axle 14 in a housing 13 of the ram.
  • FIG. 1B An analogous arrangement is present on the table 14 (FIG. 1B) of the device of FIGS. lA and 1B, which again has a centering stop 15 against whose centering face 16 a corresponding face 17 of a tool holder 18 comes to rest.
  • the tool holder 18 is mounted to rotate on an axle 19 and has tool inserts 20, 21 and 22 which ⁇ are intended to co-operate with the tools 5, 6 and 7.
  • the axle 19 of the tool holder 18 is held at each side by a two-armed lever 23 (only one such lever 23y being shown in the drawing).
  • Each lever 23 is pivotally mounted on an axle 24 and is connected at the opposite end with an actuating bar 25 of a piston to reciprocate in a cylinder 26.
  • the cylinder 26 is pivotally mounted on an vaxle 27 in the housing 28.
  • the pair of levers 23 can be pivoted so that the tool holder 18 takes up the position shown by dash-dot lines. In this position, the tool holder 18 can be turned so that the tools 20, 21 or 22 can be i ⁇ brought into their working position.
  • an automatic centering of the tool holder 18 take-s place in that the corresponding face 17 will rest against the centering surface 16.
  • FIG. 3 A further embodiment of the invention is shown in FIG. 3.
  • This is a chamfering press having a bending device for the carrying out of consecutive operations, for example, multiple bends.
  • the bending device has a table 30 with a tool holder 51 which carries a matrix 31.
  • the matrix is provided with two forms ,32 and 33 which cooperate with two press dies 34 and 35.
  • the die 34 is ex changeably mounted on a tool holder 36 of the ram of the bending device by means of a screw bolt 37 and is provided with a die holder 38 which carries the die 35 that is pivotally mounted on an axle 39 of the holder 38 yso that the die 35 can be pivoted out of the solid line position into one shown by dash-dot lines.
  • the position of the die 35 shown in solid lines corresponds to the working position while the dash-dot line position corresponds to the inoperative position of the die 35.
  • an air cylinder 40 is provided which is pivotally secured to the tool holder 36 by means of a forleshaped holder 52.
  • the cylinder has a piston which has a piston rod 41 that is connected with an arm 43 by means of a fork shaped holder 42.
  • This arm 43 is connected by a screw bolt 44 with the pivoting die 35.
  • the die 35 On operation of the air cylinder 40 which whereby it is pivoted clockwise in the fork shaped holder 52, the die 35 can be brought from the working position into the inoperative position.
  • Adjustable bolts 45 and 46 which are mounted for axial adjustment by means of a threaded spindle 48 in a holder 47 are provided.
  • the bolts 45 and 46 act as stops for the piece 49 to be worked and conveniently fed through corresponding bores in the matrix 31.
  • the holder 47 is supported in a pedestal 50 ⁇ of the device.
  • each of said tool holders being rotatably mounted in a pair of two-armed levers, each of said pairs of levers being responsive to an actuating rod, each of said rods' being attached i to a pneumatically operable piston, andthus causing pivoting ofthe pairso'f levers from said working position to said tool-exchanging posil l tion, and
  • a device for bending work comprising: (a) a movable ram, f (b) a work table, (c) two tool holders, one of said tool holders being secured to said ram and worktable respectively, at least one of said tool holders being mounted to be movable from a tool-exchanging position into a workingposition and vice versa',
  • each of said tool holders being rotatably mounted in a pair of two-armed levers, each of said pairs of levers being responsive to an actuatingrod?.
  • each of said rods being attached to a pneumatically operable piston, and thus causing pivoting lof the pairs of levers from said working position to said tool-exchanging position, and Y (.2) said levers and said pistons being arranged to pivot said pairs of levers in opposite direction, and (d) bending tools held in said tool holders, whereby for .each bending tool .providedrin the tool holder of said ram there is a complementary tool inthe tool holder ofsaid work table.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US403141A 1963-10-11 1964-10-12 Device for bending a workpiece Expired - Lifetime US3509757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT818063A AT258674B (de) 1963-10-11 1963-10-11 Biegebearbeitungseinrichtung

Publications (1)

Publication Number Publication Date
US3509757A true US3509757A (en) 1970-05-05

Family

ID=3603252

Family Applications (1)

Application Number Title Priority Date Filing Date
US403141A Expired - Lifetime US3509757A (en) 1963-10-11 1964-10-12 Device for bending a workpiece

Country Status (5)

Country Link
US (1) US3509757A (fr)
AT (1) AT258674B (fr)
CH (1) CH414508A (fr)
DE (2) DE1452682A1 (fr)
FR (2) FR1408555A (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681994A (en) * 1969-09-22 1972-08-08 Haemmerle Ag Maschf Bend-shaping device
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
US4805438A (en) * 1987-03-05 1989-02-21 Metal Building Components Incorporated Hemming die fixture for metal presses
US4918971A (en) * 1988-04-22 1990-04-24 Osamu Makino Bending tool
US20070056348A1 (en) * 2005-09-09 2007-03-15 David Leland Brake punch inserts
US20080202192A1 (en) * 2007-02-15 2008-08-28 Helmut Krumpen Pressing device for forming steel sheet blanks into clips
CN112742913A (zh) * 2020-12-25 2021-05-04 山东工业职业学院 一种便于自动调整磨具的钣金折弯加工设备
CN114309194A (zh) * 2022-01-25 2022-04-12 天津瑞亿特机械有限公司 一种自动压槽机及其压槽方法
US20220314293A1 (en) * 2019-02-21 2022-10-06 Blech-Tec GmbH Combination machine for folding and die bending a workpiece

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556974C3 (de) * 1975-12-18 1981-10-08 J. Fischer Kg, 5902 Netphen Profilwalzmaschine
JPS5456969A (en) * 1977-10-14 1979-05-08 Komatsu Mfg Co Ltd Automatic metal mold exchanging apparatus of press brake
WO1987004374A1 (fr) * 1984-07-18 1987-07-30 Erik Rantala Machine a former les bords
DE10163498C1 (de) * 2001-12-21 2003-02-20 Eht Werkzeugmaschinen Gmbh Biegemaschine, insbesondere Gesenk- oder Abkantpresse, mit einem verstellbaren Unterwerkzeug
DE102011077308A1 (de) * 2011-06-09 2012-12-13 Otto Bihler Handels-Beteiligungs-Gmbh Biegemaschine und Biegewerkzeug

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426446A (en) * 1943-11-22 1947-08-26 Funk Rudolph Press brake
US2456749A (en) * 1945-01-12 1948-12-21 James P Steibel Bending means
US2847053A (en) * 1954-06-07 1958-08-12 Hardman Leon Die means for forming deep bends
US3029858A (en) * 1959-09-17 1962-04-17 Foundry Equipment Co Press brake

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1163931A (fr) * 1956-11-05 1958-10-02 Carrier Soc Outillage pour presse plieuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426446A (en) * 1943-11-22 1947-08-26 Funk Rudolph Press brake
US2456749A (en) * 1945-01-12 1948-12-21 James P Steibel Bending means
US2847053A (en) * 1954-06-07 1958-08-12 Hardman Leon Die means for forming deep bends
US3029858A (en) * 1959-09-17 1962-04-17 Foundry Equipment Co Press brake

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681994A (en) * 1969-09-22 1972-08-08 Haemmerle Ag Maschf Bend-shaping device
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
US4805438A (en) * 1987-03-05 1989-02-21 Metal Building Components Incorporated Hemming die fixture for metal presses
US4918971A (en) * 1988-04-22 1990-04-24 Osamu Makino Bending tool
US20070056348A1 (en) * 2005-09-09 2007-03-15 David Leland Brake punch inserts
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
US20220314293A1 (en) * 2019-02-21 2022-10-06 Blech-Tec GmbH Combination machine for folding and die bending a workpiece
US12240028B2 (en) * 2019-02-21 2025-03-04 Blech-Tec GmbH Combination machine for folding and die bending a workpiece
CN112742913A (zh) * 2020-12-25 2021-05-04 山东工业职业学院 一种便于自动调整磨具的钣金折弯加工设备
CN112742913B (zh) * 2020-12-25 2022-04-01 山东工业职业学院 一种便于自动调整模具的钣金折弯加工设备
CN114309194A (zh) * 2022-01-25 2022-04-12 天津瑞亿特机械有限公司 一种自动压槽机及其压槽方法

Also Published As

Publication number Publication date
DE1777268B1 (de) 1971-03-11
FR89367E (fr) 1967-06-16
AT258674B (de) 1967-12-11
FR1408555A (fr) 1965-08-13
DE1452682A1 (de) 1969-03-27
CH414508A (de) 1966-06-15

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