US3717061A - Punch press - Google Patents

Punch press Download PDF

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Publication number
US3717061A
US3717061A US00113042A US3717061DA US3717061A US 3717061 A US3717061 A US 3717061A US 00113042 A US00113042 A US 00113042A US 3717061D A US3717061D A US 3717061DA US 3717061 A US3717061 A US 3717061A
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US
United States
Prior art keywords
workpiece
ram
striker
base
central
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
US00113042A
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English (en)
Inventor
D Daniels
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.)
AMADA Ltd
AMADA LTD US
Original Assignee
AMADA Ltd
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 AMADA Ltd filed Critical AMADA Ltd
Application granted granted Critical
Publication of US3717061A publication Critical patent/US3717061A/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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12—Punching using rotatable carriers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y10T83/8732—Turret of tools

Definitions

  • ABSTRACT A turret punch press of the type in which the workpiece is movable in both the X and Y axes within a work area defined by upper and lower aligned frames joined at their four corners.
  • the workpiece is supported on a fixed table and laterally extending movable side tables.
  • the workpiece is moved relative to the fixed central and movable side tables along the X axis and is moved relative to the central table but with the side tables in the Y axis.
  • the side tables are supported by swinging support members which allow movement only in the horizontal plane. workpiece supporting rollers are lowered out of the path of the workpiece holding clamps.
  • the invention comprises a press frame bridge structure having a shape similar to two C-frames turned face-to-face and both connected in arm-to-arm fashion. This completely eliminates the customary massive proportions required of the back of the C-frame inasmuch as the loads are applied at the center of the span with the result that deflection occurs directly upward and the striker remains true to punch and diealignment. Thus for a similar capacity machine the structural weight and overall size are reduced greatly from the conventional C-frame turret press.
  • the invention also provides that the lower frame of this bridgetype frame provides a platform for the workpiece supporting table allowing for alignment of the table and the press during manufacture of the combined unit.
  • Still another feature of the invention is a unique mechanism for lowering the workpiece supporting rollers out of the path of the workpiece holding clamps.
  • Still another feature of the invention is to use a multisection workpiece supporting table with the central table remaining fixed and with side tables moveable with the workpiece clamping means.
  • a unique swinging support member carries each side table and maintains accurate alignment in the horizontal plane between the central table and the side tables.
  • FIG. 1 is an isometric illustrating a turret punch press embodying the principles of the invention.
  • FIG. 2 is a schematic illustration of the means for moving the various moveable parts from the turret punch press shown in FIG. 1.
  • FIG. 3 is an isometric illustration showing the means for lowering the workpiece supporting rollers.
  • the turret punch press embodying the principles of the invention includes two sets of legs 12 joined by plates 14 which rest on the floor or other support surface commonly employedat the users site.
  • the legs are joined to a support frame 16 comprised of a lower frame 18 and an upper frame 20.
  • the upper frame 20 is supported by the lower frame by four corner posts 22.
  • Bolts 24 arepassed through the upper and lower frames and the corner posts and are provided with nuts 26 to draw the frames tightly together.
  • the press frame can be visualized as two C-frames facing one another with their arms joined together at the center.
  • the upper frame 20 is thus in the form of a bridge spanning the four corner posts and spaced from the lower frame to define a work area WA.
  • a conventional tool holding turret mechanism 28 comprising an upper turret 30 and a lower turret 32.
  • the upper turret holds a plurality of circumferentially spaced punches and the lower turret 32 holds corresponding dies.
  • the turrets are rotated to position a tool at the desired punching location by a sprocket and chain rotary drive 36.
  • the upper frame includes a flywheel 38 driven by belts 40 from a motor 42.
  • a shaft 44 is fixed to the flywheel and extends across the midsection of the upper frame to a similar flywheel on the opposite side of the frame.
  • Mounted on the shaft 44 is a conventional ram and striker 46.
  • the striker is driven by the ram against the selected tool and at the precise moment as dictated by the programmed numerical control. Since the striker is moveable only in the vertical plane and is positioned exactly at the midsection of the frame the reaction load on the striker will be distributed over the upper frame so that the frame is deflected along its entire length. As a result the striker will remain vertically aligned with the tool regardless of the amount of deflection.
  • the workpiece is supported in the work area WA by a fixed central table 50 having a plurality of workpiece supporting posts 52.
  • this central table may be of substantial width along the Y axis resulting in a large capacity but without making the upper and lower frames of massive dimensions to withstand the load.
  • side tables 54 Joined to the lower frame 18 are side tables 54 which move along the Y axis relative to the fixed central table 50. It is a unique feature of this invention that the side tables are supported solely by the lower frame so that alignment tolerances between the tables and the tool in the turrets may be obtained accurately during the manufacturing of the press and need not be adjusted during or after installation at the users site.
  • the side tables 54 are guided for movement in the Y axis on the lower frame 18 by guidebars 56 that are slidably received in a carriage way 58.
  • the side tables are supported in the vertical plane by inner and outer swinging support members 62 and 64 respectively.
  • Inner support member 62 swings about a pivot 66 securedto the lower frame 18.
  • the pivot 66 is similar to a door hinge and allows free horizontal swinging movement but prevents vertical movement.
  • the outer support member is coupled to the inner support member by a second hinge or pivot 68 which also precludes movement in the vertical direction but allows the outer member to swing relative to the inner member.
  • the outer support member 64 is provided at its outer end with a sleeve 70 which rotatably receives a support post 72.
  • the post 72 is secured to a plate 74 on its upper end which is secured to the underside of the side table. As is readily apparent during reciprocating motion of the side table along the lower frame 18 the weight is transferred to the swinging support members with the plate 74 moving in a purely linear direction.
  • the positioning mechanism includes an elongated guideway 78 in which is mounted a slidable carriage 80.
  • the carriage 80 is slid relative to the side tables in the X axis by a bi-directional motor and screw mechanism 81.
  • Coupled to the slidable carriage 80 are workpiece clamps 82.
  • the guideway 78, carriage 80 and clamps 82 are of conventional construction the details of which will be apparent to one skilled in the art.
  • the numerically controlled programmer in a manner well known, will position the carriage 80 relative to the tables in the X axis.
  • the carriage 80 and guideway 78 along with the side tables 54 are moved together in the Y axis by a bidirectional motor and screw mechanism 84. As is readily apparent movement in the Y axis is guided by the guide bars 56 and carriage way 58.
  • the carriage way 58 is provided with an upper cam edge 86 which engages a cam follower 87 on each of a plurality of elongated cam shafts 88 which extend across the underside of the central table 50.
  • the cam shafts 88 are provided with flats 89 aligned below each of the workpiece rods 52.
  • a punch press having a base and an upper frame spanning said base and defining'a workpiece receiving area therebetween, means for supporting a workpiece in said workpiece receiving area, means for positioning the workpiece in the X and Y axes, a ram, a downwardly movable striker beneath said ram, means for holding a punching tool beneath said striker, and means supporting said ram and striker on said upper frame in a position wherein forces on the striker resulting from engagement of the punching tool with said workpiece cause upward deflection of said upper frame substantially equally on both sides of said ram to maintain alignment of said tool and symetrically distribute the load along said upper frame.
  • a punch press for large workpieces in the order of 6 feet by 4 feet or larger comprising an elongated base, an upper frame having opposite ends secured to said base and a central span, a ram positioned on said central span, a striker positioned beneath said ram, workpiece supporting means carried by said base, said workpiece supporting means including a central table fixed on said base and lateral side tables movably supported by said base, and means movable over said central table for positioning the workpiece beneath said tool including first means for moving the workpiece over said central and side tables in the X axis and second means for moving the workpiece and the side tables in the Y axis and wherein the base is the sole support for both the central table and the side tables.
  • side tables each including side table supporting means comprising a pair of hinged inner and outer support members, said inner support member hinged to said base for pivotal movement only in the horizontal plane, said outer support member hinged to said inner support member also for movement only in the horizontal plane, and means rotatably mounting the side table to the outer member whereby said support members are free to swing while the side tables are reciprocated in a linear direction.
  • a turret punch press having a work table including a plurality of rows of workpiece supporting means extending upwardly beyond the upper surface of the table, means for positioning the workpiece along the X and Y axes, said positioning means including workpiece engaging means spaced closely to the table surface and extending downwardly below the upper ends of said workpiece supporting means, the improvement comprising means for lowering the workpiece supporting means below the plane of the workpiece engaging means, said lowering means including cam means each extending parallel to the X axis below an entirerow of workpiece supporting means and movable into a first position for lowering the workpiece supporting means below the workpiece engaging means and into a second position for raising the 'the workpiece supporting means above the upper surface of the table, and means for sequentially actuating said rows of cam means for moving them into said first position and thus lowering said workpiece supporting means clear of said workpiece engaging means as the workpiece engaging means is moved in the Y axis.
  • said work table includes a central table, lateral side tables slideably movable relative to the central table, guide means for guiding movement of the side tables in the Y axis, said means for sequentially engaging said cam means including a cam surface movable with said side tables so that the workpiece supporting means are lowered as the side tables move toward the turrets along the Y axis.
  • said workpiece supporting means including a plurality of rods
  • said cam means including cam shafts having flats aligned with the rods whereby rotation of the cam shafts will cause the flats to engage the rods to bring the rods below the plane of the workpiece engaging means.
  • said means for holding a tool including a pair of turrets rotatable about a stationary vertical axis and means for rotating said turrets to position a tool beneath said striker.
  • said workpiece supporting means including a stationary workpiece supporting table fixed on said base table, said means for positioning the workpiece in the X and Y axes including clamp means movable over said table in both the X and Y axes, said workpiece supporting means including movable side tables mounted on said base for movement with said clamp means along said Y axis.
  • side tables including side table supporting means comprising a pair of hinged inner and outer supporting members and mounted for pivotal movement only in the horizontal plane, said outer support member hinged to said inner support member also for movement only in the horizontal plane, and means rotatably mounting the side table to the outer member whereby said support members are free to swing while the side tables are reciprocated in a linear direction.
  • a punch press having a base, workpiece supporting means on said base, a ram and striker unit, a tool positionable beneath said ram and striker unit and engagable by said striker causing an upward reaction force on the ram and striker unit, means for positioning a workpiece in both the X and Y axes in alignment with said tool, and means for fixedly supporting the ram and striker unit over said workpiece supporting means and guiding upward deflection of said ram and striker unit along a straight vertical path whereby the tool is maintained in a vertical alignment while punching.
  • said means for supporting the ram and striker unit including an upper frame having an elongated central span joining opposite ends, said opposite ends supported by said base, and said ram and striker unit having a ram of limited mass and a width along the length of the centralspan substantially less than the length of said central span and positioned centrally along the length of the span so that the reaction force is passed to said central span and is distributed symetricaily along the central span toward both ends of said upper frame whereby maximum deflection of the central span occurs at the center and is distributed uniformly along the central span toward both said ends.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Details Of Cutting Devices (AREA)
US00113042A 1971-02-19 1971-02-19 Punch press Expired - Lifetime US3717061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11304271A 1971-02-19 1971-02-19

Publications (1)

Publication Number Publication Date
US3717061A true US3717061A (en) 1973-02-20

Family

ID=22347291

Family Applications (1)

Application Number Title Priority Date Filing Date
US00113042A Expired - Lifetime US3717061A (en) 1971-02-19 1971-02-19 Punch press

Country Status (6)

Country Link
US (1) US3717061A (de)
JP (1) JPS5440800B1 (de)
CA (1) CA948549A (de)
DE (2) DE2265390C3 (de)
GB (1) GB1378487A (de)
HK (1) HK12976A (de)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802687A (en) * 1971-06-02 1974-04-09 W Bredow Holding rail arrangement
US3815403A (en) * 1972-12-04 1974-06-11 Amada Ltd Punching-fabricating apparatus interface mechanism
US3826119A (en) * 1972-06-05 1974-07-30 Automec Inc Numerical control system for press brakes and the like
JPS5060771A (de) * 1973-09-29 1975-05-24
US3961549A (en) * 1975-06-16 1976-06-08 Houdaille Industries, Inc. Die changing turret table segment
US4080855A (en) * 1976-09-02 1978-03-28 Houdaille Industries, Inc. Tip table worktable section
US4143571A (en) * 1976-04-26 1979-03-13 Blackman Martin Group Limited Assemblies for workpiece positioning
US4162641A (en) * 1977-10-28 1979-07-31 Potomac Applied Mechanics, Inc. Automatic loading and unloading for numerically controlled turret punch
US4220062A (en) * 1977-08-25 1980-09-02 Trumpf Maschinen Ag Machine having a plurality of reciprocating working tools which may be selectively brought into operation
DE3204032A1 (de) * 1982-02-05 1983-08-11 Ferdinand 8376 Teisnach Dietz Verfahren zum herstellen von werkstuecken durch stanzen aus einer blechtafel unter verwendung einer nc-gesteuerten stanzmaschine
US4452115A (en) * 1981-09-05 1984-06-05 C. Behrens Ag Machine for treating plate-shaped workpieces especially a cutting press
US4515050A (en) * 1982-11-09 1985-05-07 Hammerle Ag Maschinenfabrik Apparatus for feeding sheet metal plates to a sheet shear arrangement
US4532843A (en) * 1982-11-02 1985-08-06 Amada Company, Limited Punch press
US4541318A (en) * 1983-08-17 1985-09-17 Voest-Alpine Aktiengesellschaft Press for forming sheet metal elements
US4548115A (en) * 1983-04-28 1985-10-22 Usm Corporation Positioning apparatus
US4589317A (en) * 1983-12-30 1986-05-20 U.S. Amada Limited Sheet or plate material machining equipment
WO1993003893A1 (en) * 1991-08-19 1993-03-04 Dunn David C Linear punch press
US5195413A (en) * 1991-08-16 1993-03-23 Mate Punch & Die Co. Shearing tool for punch presses
WO1997035709A1 (de) * 1996-03-25 1997-10-02 Heinrich Wemhöner Gmbh & Co.Kg Maschinenfabrik Beschichtungspresse
US5778749A (en) * 1995-06-05 1998-07-14 Dunn; David C. Flexible manufacturing press assembly
EP0945194A2 (de) * 1998-03-21 1999-09-29 Trumpf GmbH & Co Maschine zum Bearbeiten von plattenartigen Werkstücken, insbesondere von Blechen
US6647846B2 (en) * 2000-11-08 2003-11-18 Trumpf Gmbh & Co. Machine tool with feed system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8301692A1 (es) * 1979-12-20 1983-01-01 Mercer Nairne & Co Ltd Prensa troqueladora.
AT373512B (de) * 1982-05-19 1984-01-25 Voest Alpine Ag Vorrichtung zum zufuehren plattenfoermiger werkstuecke zu einer werkzeugmaschine
FR2534498B1 (fr) * 1982-10-13 1985-12-27 Picot Sa Agencement de tourelles pour poinconneuses-grignoteuses
CH672444A5 (de) * 1987-10-08 1989-11-30 Raskin Sa
DE3826827C2 (de) * 1988-08-06 1994-02-10 Behrens Ag C Vorrichtung zum Positionieren einer Blechtafel
DE4134273C2 (de) * 1991-10-17 1994-05-26 Wolfgang Mayer Vorrichtung zum Zuschneiden und zur Kantenbearbeitung plattenförmiger Werkstücke

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US694445A (en) * 1901-06-03 1902-03-04 Elmer J Timmons Swinging shelf for desks, &c.
US3293971A (en) * 1965-06-23 1966-12-27 Robert S Kuss Template producer
US3302494A (en) * 1963-07-08 1967-02-07 Int Standard Electric Corp Automatic drilling machine
US3448645A (en) * 1966-08-11 1969-06-10 Cincinnati Shaper Co Numerically controlled punching machine and method
US3449991A (en) * 1967-02-06 1969-06-17 Dennis Daniels Punch press

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2656624A (en) * 1943-04-16 1953-10-27 Leo M Kahn Multiple buck press
US3395596A (en) 1966-05-31 1968-08-06 Warner Swasey Co Disappearing table
DE6807181U (de) * 1968-11-15 1969-03-20 Gustav Edel Ohg Metallbearbeitungsmaschine mit koordinatentisch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US694445A (en) * 1901-06-03 1902-03-04 Elmer J Timmons Swinging shelf for desks, &c.
US3302494A (en) * 1963-07-08 1967-02-07 Int Standard Electric Corp Automatic drilling machine
US3293971A (en) * 1965-06-23 1966-12-27 Robert S Kuss Template producer
US3448645A (en) * 1966-08-11 1969-06-10 Cincinnati Shaper Co Numerically controlled punching machine and method
US3449991A (en) * 1967-02-06 1969-06-17 Dennis Daniels Punch press

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802687A (en) * 1971-06-02 1974-04-09 W Bredow Holding rail arrangement
US3826119A (en) * 1972-06-05 1974-07-30 Automec Inc Numerical control system for press brakes and the like
US3815403A (en) * 1972-12-04 1974-06-11 Amada Ltd Punching-fabricating apparatus interface mechanism
JPS5060771A (de) * 1973-09-29 1975-05-24
US3961549A (en) * 1975-06-16 1976-06-08 Houdaille Industries, Inc. Die changing turret table segment
US4143571A (en) * 1976-04-26 1979-03-13 Blackman Martin Group Limited Assemblies for workpiece positioning
US4080855A (en) * 1976-09-02 1978-03-28 Houdaille Industries, Inc. Tip table worktable section
US4220062A (en) * 1977-08-25 1980-09-02 Trumpf Maschinen Ag Machine having a plurality of reciprocating working tools which may be selectively brought into operation
US4162641A (en) * 1977-10-28 1979-07-31 Potomac Applied Mechanics, Inc. Automatic loading and unloading for numerically controlled turret punch
US4452115A (en) * 1981-09-05 1984-06-05 C. Behrens Ag Machine for treating plate-shaped workpieces especially a cutting press
DE3204032A1 (de) * 1982-02-05 1983-08-11 Ferdinand 8376 Teisnach Dietz Verfahren zum herstellen von werkstuecken durch stanzen aus einer blechtafel unter verwendung einer nc-gesteuerten stanzmaschine
US4532843A (en) * 1982-11-02 1985-08-06 Amada Company, Limited Punch press
US4515050A (en) * 1982-11-09 1985-05-07 Hammerle Ag Maschinenfabrik Apparatus for feeding sheet metal plates to a sheet shear arrangement
US4548115A (en) * 1983-04-28 1985-10-22 Usm Corporation Positioning apparatus
US4541318A (en) * 1983-08-17 1985-09-17 Voest-Alpine Aktiengesellschaft Press for forming sheet metal elements
US4589317A (en) * 1983-12-30 1986-05-20 U.S. Amada Limited Sheet or plate material machining equipment
US5195413A (en) * 1991-08-16 1993-03-23 Mate Punch & Die Co. Shearing tool for punch presses
US5193426A (en) * 1991-08-19 1993-03-16 Dunn David C Linear type punch press
WO1993003893A1 (en) * 1991-08-19 1993-03-04 Dunn David C Linear punch press
US5778749A (en) * 1995-06-05 1998-07-14 Dunn; David C. Flexible manufacturing press assembly
US6868767B1 (en) 1995-06-05 2005-03-22 David C. Dunn Flexible manufacturing press assembly
WO1997035709A1 (de) * 1996-03-25 1997-10-02 Heinrich Wemhöner Gmbh & Co.Kg Maschinenfabrik Beschichtungspresse
EP0945194A2 (de) * 1998-03-21 1999-09-29 Trumpf GmbH & Co Maschine zum Bearbeiten von plattenartigen Werkstücken, insbesondere von Blechen
EP0945194A3 (de) * 1998-03-21 2001-08-01 Trumpf GmbH & Co Maschine zum Bearbeiten von plattenartigen Werkstücken, insbesondere von Blechen
US6647846B2 (en) * 2000-11-08 2003-11-18 Trumpf Gmbh & Co. Machine tool with feed system

Also Published As

Publication number Publication date
GB1378487A (en) 1974-12-27
CA948549A (en) 1974-06-04
DE2265390B1 (de) 1979-05-23
DE2265390C3 (de) 1984-08-30
DE2264852A1 (de) 1975-07-10
HK12976A (en) 1976-03-19
DE2264852B2 (de) 1981-06-19
DE2264852C3 (de) 1985-03-14
JPS5440800B1 (de) 1979-12-05

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