US3852991A - Bending press - Google Patents

Bending press Download PDF

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Publication number
US3852991A
US3852991A US00397024A US39702473A US3852991A US 3852991 A US3852991 A US 3852991A US 00397024 A US00397024 A US 00397024A US 39702473 A US39702473 A US 39702473A US 3852991 A US3852991 A US 3852991A
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US
United States
Prior art keywords
upper jaw
jaw
thrust
secured
bending press
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
US00397024A
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English (en)
Inventor
S Poggio
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.)
VERRINA SpA
Original Assignee
VERRINA SpA
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 VERRINA SpA filed Critical VERRINA SpA
Application granted granted Critical
Publication of US3852991A publication Critical patent/US3852991A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/068—Drive connections, e.g. pivotal
    • 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
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B30B15/041—Guides

Definitions

  • the upper jaw is operated at least in its lowering di- Cl 5 72/447, rection by a pair of lateral hydraulic thrust cylinders. l00/214 Between the upper jaw and the piston rod of each CL thrust cylinder an articulated Connection is mounted Fleld 0f Search 100/258, having its articulation axis at right angles to the plane 258 A of the upper jaw, the said articulated connection being in the form of a thrust transmitting support having a References cued cylindrical or spherical shape.
  • This invention relates to a bending press with hydraulic overhead drive, provided with a vertically reciprocable upper jaw which may be inclined with respect to the lower jaw and which is operated at least in its lowering direction by a pair of lateral hydraulic thrust cylinders.
  • the bending press is characterized by the fact that between the upper jaw and the piston rod of each thrust cylinder an articulated connection is mounted, with its hinge axis perpendicular to the plane of the upper jaw, the said articulated connection acting, at least in the lowering direction of the upper jaw, as thrust transmitting bearing between the thrust cylinders and the upper jaw.
  • additional vertical guide means are provided on the machine frame in correspondence of the articulated connections between the upper jaw and the piston rod of each thrust cylinder, for guiding the upper jaw in its vertical reciprocation motion.
  • FIG. 1 is a front elevation of a bending press according to the invention.
  • FIG. 2 is a side view of the bending press of FIG. 1.
  • FIG. 3 is a cross section of a first embodiment of the articulated connection between the upper jaw and the piston rod of a thrust cylinder.
  • FIG. 4 is a top plan view of the articulated connection of FIG. 3.
  • FIGS. 5 and 6 are longitudinal sections taken along line V-V of FIG. 1 of the articulated connections be- 10 jaw and the piston rod of the corresponding thrust cylinder.
  • FIGS. 9 and 10 are sections along line IXIX of FIG. 8 of the articulated connections between the upper jaw and the piston rods of the two thrust cylinders.
  • 1 is the frame of the bending press.
  • the stationary lower jaw 2 is secured to the lower side of the said frame 1.
  • a pair of hydraulic thrust cylinders 3 are fastened with their axis vertical to the sides of the upper front of the machine frame 1.
  • the upper jaw 4 is displaceably guided for reciprocation in vertical guides 5 which are fastened on the inwardly directed sides of the two thrust cylinders 3.
  • the upper jaw 4 may be inclined in its vertical plane in the guides 5 with respect to the lower jaw 2. This may be accomplished, in a known manner, by providing for a different stroke of the piston rods 103 of the two cylinders 3.
  • the hydraulic thrust cylinders 3 are double acting hydraulic cylinders controlling both the lowering and the lifting of the upper jaw 4.
  • the upper jaw 4 is provided with a lateral portion projecting beneath the corresponding hydraulic cylinder 3, to which the piston rod 103 of the corresponding cylinder 3 is hinge connected.
  • said hinge connection between the upper jaw and the piston rod 103 of the cylinders 3 comprises a U-shaped hinge element 6, provided with two downwardly extending legs 106 between which the upper jaw 4 is inserted.
  • the crossbar 206 of the hinge element 6 is connected to the piston rod 103 of the corresponding cylinder 3 in a rotatable manner about the longitudinal axis of the piston rod 3.
  • the crossbar 206 of the hinge element 6 is provided on its upper side with a circular recess 7, in which the end section of the piston rod 103 is inserted.
  • the piston rod 103 abuts with its rounded head end against the bottom of the recess 7, and is provided with an external anular groove 8, into engagement with a pair of semicircular retaining segments 10, which are bolted by means of bolts 9 to the crossbar 206 of the hinge element 6.
  • a thrust element 11 is housed between the upper jaw 4 and the crossbar 206 of the hinge element 6 .
  • the said thrust element 11 is provided with a cylindrically profiled upper side lll abuting against the correspondingly profiled lower side of cross bar 206.
  • the lower side 211 of the thrust element 11 is flat and abuts against a correspondingly flat surface of the upper jaw 4. 1
  • one of the thrust elements 11 is inserted without play into a corresponding recess formed in the upper edge of the upper jaw 4.
  • the second thrust element 11, as shown in FIG. 6, is inserted with a lateral play into a corresponding recess 12 formed in the upper edge of the upper jaw 4.
  • the upper jaw is hinged to the hinge elements 6 by means of hinge pins 13, 113, extending through a pair of coaxial borings formed in the legs 106 of the hinge elements 6, and through an axially aligned bore 14, 114 formed in the upper jaw 4.
  • the borings 14, 114 have at least in a vertical direction a dimension which is greater than the diameter of the corresponding pins 13, 113, in order to avoid that, during the operation of the press, the said pins be subjected to a strong compression force.
  • the hinge pin 13 is guided into the hole 14 of the upper jaw without appreciable horizontal play.
  • the hinge pin 113 is guided into an horizontally oblong hole 114 formed into the upper jaw 4, as best shown in FIG. 6, so as to permit a limited movement in a horizontal direction of the upper jaw with respect to the hinge pin 113.
  • the above feature in combination with the fact that the corresponding thrust element 11 is mounted with a longitudinal play into the recess 12, permits to incline the upper jaw with respect to the lower jaw, in order to obtain the desired conical profile sheet metal.
  • the inclined adjustment of the upper jaw 4 does not influence the hinge elements 6,
  • each hinge element 6 is guided into a vertical guide secured to the machine frame.
  • the said slide guides comprises a guide rail 15 cooperating at both sides with two guide flanges 16 of the hinge elements 6, with the interposition of V shaped adjustable gibs 17.
  • the thrust elements 11 are mounted directly between the piston rods 103 and the upper support crosspiece 104 of the upper jaw 4.
  • each thrust element 11 has a spherical profile and abuts against the correspondingly profiled lower head surface of the corresponding piston rod 103.
  • the flat lower side 211 of the circular thrust members 11 abut against the flat bottom of a circular recess 12 formed in the upper surface of the crosspiece 104 of the upper jaw 4.
  • the two circular recesses. 12 have a diameter which is greater than the diameter of the thrust elements 11, so that both thrust elements 11 may be adjusted in all horizontal directions with respect to the upper jaw 14.
  • a tie rod 18 is coaxially secured by one end, the said tie rod 18 extending downwardly through a boring 19 of the thrust element 11 and through a boring 20 of the crosspiece 104 of the upper jaw up to an opening 204 formed in the upper jaw 4.
  • a spherical articulation head 21 is secured, which is rotatably supported between two lateral support elements 22 projecting inwardly into the opening 204 of the upper jaw.
  • an engaging element 23 is mounted, into abutment with its upper, spherical surface against a corresponding spherical surface formed in the lower side of the crosspiece 104 of the upperjaw. Between the articulation head 21 and the engaging element 23 a rubber washer 24 is inserted.
  • the upper jaw 4 is guided along the machine frame 1 in correspondence of its articulated connections with the piston rods 103. To this end, to the machine frame the two rails 15 are secured. On each rail 15 a U- shaped sliding support 25 is mounted, the two legs of each support being into engagement with both sides of the rail 15, with the interposition of V-shaped adjustable gibs 17.
  • the upper jaw 4 is connected in an articulated manner with the crossbar of each sliding support 25 through an horizontal swivel pin 26, disposed at right angles to-the upper jaw plane.
  • Each swivel pin 26 is secured at one end to the corresponding sliding support 25, whilst at its other end it is provided with a head which is into rotatable engagement with ajoint element 27, secured to the upper jaw.
  • the longitudinal axis of the swivel pin 26 intersects the longitudinal axis of the tie rod 18 at the midle point of the spherical articulation head 21.
  • a wearing and spacer plate 28 is rotatably mounted on the swivel pin 26.
  • the said wearing and spacing plate 28 is partially housed in corresponding recesses formed in the sliding supports 25 and in the joint elements 27.
  • the upper jaw together with the joint element secured thereto may be shifted in correspondence of the said cylinder in a horizontal direction with respect to the corresponding sliding support 25 and the swivel pin 26 secured thereto, that is with respect to the wearing and spacing plate 28 which is mounted rotatably but not slidably on the sliding support 25.
  • a bending press with hydraulic overhead drive comprising a frame, a stationery lower jaw secured to said frame, an upper jaw slidably mounted on the said machine frame for a vertical reciprocation motion with respect to the said lower jaw, a pair of lateral hydraulic thrust cylinders secured to the said machine frame and means for operatively connecting the piston rods of the said thrust cylinders to the said upper jaw so as to reciprocate said upper jaw to and from said lower jaw, whilst permitting to incline said upper jaw with respect to the lower jaw, said means comprising a tie rod coaxially secured by one end to the end of the piston rod of each thrust cylinder, a thrust element disposed between the said piston rod and a cross bar integral with and laterally projecting from the upper end of the said upper jaw, the said thrust element and the said cross bar being provided with borings through which the said tie rod is passed with lateral play, a spherical articulation head secured to the lower end of the said tie rod, the said articulation head being supported in a rotatable manner by
  • a bending press according to claim 3 in which means are provided for shifting at least in a horizontal direction the said upper jaw with respect to the said sliding supports.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Press Drives And Press Lines (AREA)
US00397024A 1972-10-06 1973-09-13 Bending press Expired - Lifetime US3852991A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1293572 1972-10-06

Publications (1)

Publication Number Publication Date
US3852991A true US3852991A (en) 1974-12-10

Family

ID=11143852

Family Applications (1)

Application Number Title Priority Date Filing Date
US00397024A Expired - Lifetime US3852991A (en) 1972-10-06 1973-09-13 Bending press

Country Status (5)

Country Link
US (1) US3852991A (enrdf_load_stackoverflow)
JP (1) JPS4995280A (enrdf_load_stackoverflow)
CA (1) CA999510A (enrdf_load_stackoverflow)
DE (1) DE2344432A1 (enrdf_load_stackoverflow)
FR (1) FR2201973B1 (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965717A (en) * 1975-01-10 1976-06-29 Westinghouse Electric Corporation Method for forming wound circular magnetic cores into rectangular cores
US4123929A (en) * 1976-06-05 1978-11-07 G. Siempelkamp Gmbh & Co. Hydraulic press
US4450127A (en) * 1982-02-23 1984-05-22 Ptx Pentronix, Inc. Method for compacting powder material with adjustable die and punch assembly
US4573895A (en) * 1982-09-20 1986-03-04 Ptx-Pentronix, Inc. Adjustable die and punch assembly for compacting powder material
US4612765A (en) * 1985-06-27 1986-09-23 Caterpillar Inc. Anvil apparatus for a press
US4726214A (en) * 1986-04-17 1988-02-23 Ni Industries, Inc. Shrink forming apparatus
US5272904A (en) * 1991-11-21 1993-12-28 M + S Brugg Ag Hydraulically operable press brake
US6637252B2 (en) * 2000-02-03 2003-10-28 Trumpf Maschinen Austria Gmbh & Co. Kg. Manufacturing device, in particular a folding press
US20060075868A1 (en) * 2003-01-11 2006-04-13 Johann Anderl Tool guiding device
US7134314B1 (en) * 2005-08-26 2006-11-14 Fci Americas Technology, Inc. Hydraulic tool automatic adjusting die holder
US20080115557A1 (en) * 2006-11-20 2008-05-22 Bjarne Hansen Mechanical connection for transferring forces while providing insulation
EP2479022A1 (de) * 2011-01-24 2012-07-25 Osterwalder AG Pulverpresse
US9774159B2 (en) 2015-01-16 2017-09-26 Ridge Tool Company Deflection compensating press tools
CN107263904A (zh) * 2017-08-18 2017-10-20 江苏中海重型机床有限公司 一种可承受较大偏载力的液压机
CN107471713A (zh) * 2017-08-18 2017-12-15 江苏中海重型机床有限公司 一种液压机
CN112718987A (zh) * 2020-12-11 2021-04-30 芜湖同创模具机械有限公司 一种冲压模具制作的机械压力机

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321819A (en) * 1980-07-23 1982-03-30 Dyneer Corporation Press construction
JPS6052093U (ja) * 1983-09-13 1985-04-12 株式会社　アマダ プレス機械のフレ−ム構造
AT393639B (de) * 1990-03-15 1991-11-25 Lift Verkaufsgeraete Gmbh Blechbiegevorrichtung
US5295384A (en) * 1990-03-15 1994-03-22 Lift Verkaufsgerate Gesellschaft M.B.H. Sheet-metal bending device
IT1288646B1 (it) * 1996-07-26 1998-09-23 Luciano Gasparini Macchina pressa piegatrice perfezionata, particolarmente nei processi di lavorazione del metallo.
DE102011116085A1 (de) * 2011-10-12 2013-04-18 Weinbrenner Maschinenbau Gmbh Biegemaschine
PT106004B (pt) * 2011-11-15 2020-12-16 Adira Metal Forming Solutions S A Avental para compensação de deformação para quinadoras

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242714A (en) * 1963-08-09 1966-03-29 Steel Construction & Eng Co Hydraulically-operated press brake construction
US3587286A (en) * 1968-12-06 1971-06-28 Rezso Fritsch Press brake

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163105A (en) * 1962-06-11 1964-12-29 Pacific Ind Mfg Co Pivotal drive connection
DE1189042B (de) * 1963-02-28 1965-03-18 Luther Werke Luther G M B H & Lagerung fuer die Oberwange bei kraftbetaetigten Abkantpressen
FR1378183A (fr) * 1963-09-24 1964-11-13 Système d'accrochage du coulisseau aux organes d'entraînement dans les machines telles que cisailles-guillotines, presses, presses-plieuses, ou autres

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242714A (en) * 1963-08-09 1966-03-29 Steel Construction & Eng Co Hydraulically-operated press brake construction
US3587286A (en) * 1968-12-06 1971-06-28 Rezso Fritsch Press brake

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3965717A (en) * 1975-01-10 1976-06-29 Westinghouse Electric Corporation Method for forming wound circular magnetic cores into rectangular cores
US4123929A (en) * 1976-06-05 1978-11-07 G. Siempelkamp Gmbh & Co. Hydraulic press
US4450127A (en) * 1982-02-23 1984-05-22 Ptx Pentronix, Inc. Method for compacting powder material with adjustable die and punch assembly
US4573895A (en) * 1982-09-20 1986-03-04 Ptx-Pentronix, Inc. Adjustable die and punch assembly for compacting powder material
US4612765A (en) * 1985-06-27 1986-09-23 Caterpillar Inc. Anvil apparatus for a press
US4726214A (en) * 1986-04-17 1988-02-23 Ni Industries, Inc. Shrink forming apparatus
US5272904A (en) * 1991-11-21 1993-12-28 M + S Brugg Ag Hydraulically operable press brake
US6637252B2 (en) * 2000-02-03 2003-10-28 Trumpf Maschinen Austria Gmbh & Co. Kg. Manufacturing device, in particular a folding press
US20060075868A1 (en) * 2003-01-11 2006-04-13 Johann Anderl Tool guiding device
US7281462B2 (en) * 2003-01-11 2007-10-16 Johann Anderl Tool guiding device
WO2007024394A1 (en) * 2005-08-26 2007-03-01 Fci Americas Technology, Inc. Hydraulic tool automatic adjusting die holder
US7134314B1 (en) * 2005-08-26 2006-11-14 Fci Americas Technology, Inc. Hydraulic tool automatic adjusting die holder
CN101253013B (zh) * 2005-08-26 2012-04-18 豪倍公司 液压工具的自动调节式模具保持器
US20080115557A1 (en) * 2006-11-20 2008-05-22 Bjarne Hansen Mechanical connection for transferring forces while providing insulation
US7536897B2 (en) * 2006-11-20 2009-05-26 Amada Europe Mechanical connection for transferring forces while providing insulation
EP2479022A1 (de) * 2011-01-24 2012-07-25 Osterwalder AG Pulverpresse
WO2012101103A1 (de) * 2011-01-24 2012-08-02 Osterwalder Ag Pulverpresse
CN103328197A (zh) * 2011-01-24 2013-09-25 奥斯瓦尔德股份公司 粉末压制机
US9774159B2 (en) 2015-01-16 2017-09-26 Ridge Tool Company Deflection compensating press tools
CN107263904A (zh) * 2017-08-18 2017-10-20 江苏中海重型机床有限公司 一种可承受较大偏载力的液压机
CN107471713A (zh) * 2017-08-18 2017-12-15 江苏中海重型机床有限公司 一种液压机
CN112718987A (zh) * 2020-12-11 2021-04-30 芜湖同创模具机械有限公司 一种冲压模具制作的机械压力机

Also Published As

Publication number Publication date
FR2201973B1 (enrdf_load_stackoverflow) 1977-05-27
DE2344432A1 (de) 1974-04-11
CA999510A (en) 1976-11-09
JPS4995280A (enrdf_load_stackoverflow) 1974-09-10
FR2201973A1 (enrdf_load_stackoverflow) 1974-05-03

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