EP0100283A2 - Universalblechhalter - Google Patents

Universalblechhalter Download PDF

Info

Publication number
EP0100283A2
EP0100283A2 EP83401524A EP83401524A EP0100283A2 EP 0100283 A2 EP0100283 A2 EP 0100283A2 EP 83401524 A EP83401524 A EP 83401524A EP 83401524 A EP83401524 A EP 83401524A EP 0100283 A2 EP0100283 A2 EP 0100283A2
Authority
EP
European Patent Office
Prior art keywords
worksheet
gripping
gripper
aligning
carriage
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.)
Granted
Application number
EP83401524A
Other languages
English (en)
French (fr)
Other versions
EP0100283A3 (en
EP0100283B1 (de
Inventor
James R. Hunter
James S. Lazzarotti
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.)
Warner and Swasey Co
Original Assignee
Warner and Swasey Co
Bendix Automation Co
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 claimed from US06/401,444 external-priority patent/US4503741A/en
Priority claimed from US06/401,446 external-priority patent/US4519284A/en
Application filed by Warner and Swasey Co, Bendix Automation Co filed Critical Warner and Swasey Co
Publication of EP0100283A2 publication Critical patent/EP0100283A2/de
Publication of EP0100283A3 publication Critical patent/EP0100283A3/en
Application granted granted Critical
Publication of EP0100283B1 publication Critical patent/EP0100283B1/de
Expired 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
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • 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
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/26—Perforating, i.e. punching holes in sheets or flat parts
    • B21D28/265—Perforating, i.e. punching holes in sheets or flat parts with relative movement of sheet and tools enabling the punching of holes in predetermined locations of the sheet, e.g. holes punching with template
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • 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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • B21D37/147—Tool exchange carts

Definitions

  • This invention relates to metal working and more particularly to a versatile sheet metal gripper.
  • Sheet metal grippers are well known in the art.
  • U.S. Patent No. 3,603,187; 3,835,743; and 4,127,198 disclose exemplary prior art sheet metal grippers.
  • a disadvantage of most prior art sheet metal grippers is that they grip only, on one axis of a sheet metal workpiece.
  • the present invention discloses a universal sheet metal gripper which grips the end or sides of a piece of sheet metal.
  • the disclosed grippers are mounted on a cross slide which is movably supported from a bridge type carriage.
  • the carriage arrangement when utilized with a sheet metal support table permits sheet metal workpieces to be loaded from the side or from the front end of the press.
  • the disclosed grippers grip one end of the workpiece in a conventional manner.
  • a retractable pin is used in conjunction with the grippers for aligning the worksheet.
  • the disclosed grippers engage opposite sides of the worksheet.
  • a plurality of retractable pins are provided for aligning the worksheet before opposite sides are engaged by the grippers.
  • Punch press 20 consists of a bridge type punch head structure 22 and a workpiece support table 40 which are connected together to form an integral structure.
  • a pair of punching heads 32 and 34 are provided on the bridge punching frame 22.
  • a bridge type sheet metal positioning catriage 42 is . movable toward and away from the punching heads 32, 34.
  • the pair of sheet metal grippers 44 and 46 are supported by a cross slide 41 that is movable along carriage 42. Movement of carriage 42 and cross slide 41, which holds sheet metal grippers 44 and 46 on carriage 42, provides for two axes, X - Y, positioning of a sheet metal workpiece 21.
  • the disclosed grippers 44, 46 are particularly suitable for use on a punch press as disclosed in co-pending U.S. Patent Application No. 401,444 entitled "A Bridge Type Punch Press” (Docket No. 200-80023) whose teachings are herein incorporated by reference.
  • Carriage 42 rides on linear bearings moving on a pair of linear ways 110, 112.
  • a ball screw 114 is driven by a Y axis servo motor 116.
  • Ball screw nut 118 is attached to carriage 42 to position carriage 42 in response to operation of servo motor 116.
  • Supported by carriage 42 is a cross slide member 41.
  • Cross slide 41 is supported for linear movement by ball bushing rails 120, 122.
  • a ball screw 124, which is supported in carriage 42 is driven by a servo motor 126.
  • Ball screw nut pin assembly 128 connects ball screw 124 to cross slide 41.
  • Cross slide 41 is thus positioned in the X direction in response to operation of servo motor 126.
  • Workholders 44 and 46 are attached to cross slide member 41 which is positionable along carriage 42.
  • a T-slot 130 is formed in cross slide member 41 for engaging a mating block 132 secured to workholders 44, 46.
  • Two bolts which engage block 132 are provided for securing workholders 44, 46 to cross slide 41.
  • the location of the workholder 44, 46 on the cross slide 41 is adjustable by the operator to properly engage the panel being punched.
  • both workholders are adjusted to their desired settings and the screws tightened to pull block 132 into firm engagement with T-slot 130 so as to firmly affix the workholder to cross slide 41 to move as an entity.
  • Gripper 46 is formed from a bracket member 50 which is supported from cross slide 41.
  • a flexible member 51 connects an actuating member 53 to bracket 50.
  • a pair of side arm assemblies 57, 59 extend from bracket 50 and provide some support for actuating member 53.
  • An operator such as air cylinder 52, is disposed on member 50 and is actuated in response to an appropriate signal for operating gripper 46.
  • Gripper 46 has a side gripper jaw 54 and an end gripper jaw 56. Only one gripper jaw 54, 56 is used at any one time on a workpiece 21.
  • Air cylinder 52 is positioned to move pivot arm. 60 about a pivot connection 62.
  • a side pivot link 64, having pivot jaw 54 formed at one end thereof, and an end pivot link 66, having pivot jaw 56 formed at one end thereof, are positioned to be moved by pivot arm 60.
  • air cylinder 52 is actuated moving pivot arm 60 around pivot point 62 which in turn moves side pivot link 64 and end pivot link 66 about their respective pivot supports to engage the sheet metal workpiece.
  • Gripper 46 includes a front aligning surface 57 gripping the workpiece by its end. Gripper 46 also includes a side surface 55 which is spaced from the side of a worksheet when gripping a worksheet on its sides. Gripping jaws 54, 56 extend beyond their associated surfaces 55, 57 for engaging the workpiece.
  • gripper 44 is similar to construction of gripper 46, the main difference being the side gripper jaws are disposed to grip the opposite side of the sheet metal workpiece 21.
  • the side gripper jaws are disposed to grip the opposite side of the sheet metal workpiece 21.
  • Locator pins are provided for accurately locating the sheet metal workpiece 21 with respect to the punching heads before gripping.
  • Various pins which are raised for positioning a worksheet are provided on the worktable 40.
  • FIG. 13 shows a single locator pin 140 which is provided for positioning a side loaded sheet.
  • the end grippers on workholders 44 and 46 grip the end of the worksheet 21.
  • the worksheet is positioned with respect to the punch heads in the Y-direction by being in firm contact with the front aligning surface 57 of workholders 44, 46.
  • the worksheet is positioned in the X-axis direction by being positioned in firm contact with locator pin 140 that is moved up to register with the sheet during positioning. Pin 140 is retracted before the sheet is moved and punching starts.
  • Gripping jaws 54 located on the side of workholders 44, 46 are placed in a different manner.
  • Surface 55 of grippers 44, 46 is not a reference surface for the worksheet. Instead the worksheets are loaded and oriented as shown in Figure 14.
  • the workholders 44, 46 are positioned to provide a clearance between the workpiece and surface 55 for both the left hand workholder 44 and the right workholder 46.
  • the worksheet is actually positioned in the X-axis by being moved into firm contact with two locator pins 140 and 142. The sheet is then moved inward in a Y-axis direction to contact a third locator pin 144.
  • Workholders 44, 46 are simply positioned in the T-slot provided in cross slide 41 to grip the sides of the workpiece 21 with a suitable clearance gap between the surface 55, provided adjacent with gripper jaw 54, and the worksheet.
  • the purpose of a clearance gap between the worksheet 21 and the side grippers 54 of each workholders is to allow for repositioning of the carriage to grab the worksheet in a different location. This regripping process is necessary when punching a sheet which is longer than the available Y-axis travel of carriage 42. The sheet will be initially punched for the amount of Y - axis travel and then the sheet will be clamped to the table by means of clamping or repositioning cylinders.
  • the workholder jaws are then opened and the carriage 42 and supported grippers 44, 46 moved to a new position and the workholder jaws are reclosed and the repositioning clamps released.
  • Punch press 20 is then ready to punch holes in a new area of the overlength worksheet.
  • the purpose of the clearance gap between the worksheet 21 and surfaces 55 is to ' compensate for the edges of a worksheet which may not be perfectly straight and square. If workholders 44 and 46 were set up with no gap between surface 55 and the sheet was to be repositioned workholders 44 and 46 could very well scuff and bind against the worksheet when an attempt was made to reposition the carriage to a new location.
  • FIG. 15 there is shown a carriage 42 and locator pin arrangement for supporting two worksheets on punch press 20.
  • a first worksheet is loaded from the side onto punch press 20. This first worksheet is properly aligned by the pair of grippers 44, 46 and locator pin 143.
  • Locator pin 143 which is retractable, is then lowered and a second worksheet is positioned on punch press 20.
  • a second set of grippers 44, 46 are added to cross slide 41.
  • the second set of grippers 44, 46 are positioned in the T-shaped opening of cross slide 41.
  • the second set of grippers 44, 46 and locator pin 140 are used to properly align the second worksheet. Locator pin 140 is then lowered and the two worksheets are moved into position to be punched.
  • Various other arrangements of locator pins and grippers can be provided for gripping two worksheets.
  • Gripper 80 includes only one gripper jaw 82 which is angled and extended for gripping either the end or side of a work sheet.
  • Gripper 80 includes a bracket 90 which can be attached to the T-slot 130 in cross slide 41 in the same fashion as described above for grippers 44, 46.
  • An operating cylinder 92 is supported from bracket 90 and is used for positioning a pivot arm 100.
  • Pivot arm 100 is supported for pivotal movement about a pivot support pin 102.
  • Gripper jaw 82 is formed at the end of a pivot link 106. Pivot link 106 is pivotable about a support pin 103 for moving gripper jaw 82 into engagement with a worksheet 21.
  • Gripper 80 includes a front surface 83 which is aligned with the end of a workpiece when gripping the workpiece on the end.
  • Gripper 80 also includes a side surface 85 which is spaced from the side of a workpiece when gripping a workpiece on a side. The gap is left between surface 85 and the workpiece 21 for the reasons given above for side gripping by grippers 44, 46.
  • Gripping jaw 82 extends beyond surface 83, 85 for gripping either a side or end of a workpiece.
  • Gripper 80 can grip either the end or side of a worksheet with virtually the entire contact length of gripper jaw 82 in engagement with the worksheet.
  • a second gripper similar to gripper 80 but formed for gripping an opposite side of the sheet metal workpiece is provided on cross slide 41 supported from carriage 42. These two grippers work in conjunction for gripping either the end or opposite sides of a workpiece.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Jigs For Machine Tools (AREA)
EP83401524A 1982-07-26 1983-07-25 Universalblechhalter Expired EP0100283B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/401,444 US4503741A (en) 1982-07-26 1982-07-26 Bridge type punch press
US06/401,446 US4519284A (en) 1982-07-26 1982-07-26 Universal sheet metal holder
US401446 1982-07-26

Publications (3)

Publication Number Publication Date
EP0100283A2 true EP0100283A2 (de) 1984-02-08
EP0100283A3 EP0100283A3 (en) 1984-04-11
EP0100283B1 EP0100283B1 (de) 1986-12-30

Family

ID=27017458

Family Applications (2)

Application Number Title Priority Date Filing Date
EP83401524A Expired EP0100283B1 (de) 1982-07-26 1983-07-25 Universalblechhalter
EP83401523A Expired EP0100282B1 (de) 1982-07-26 1983-07-25 Portalstanze

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP83401523A Expired EP0100282B1 (de) 1982-07-26 1983-07-25 Portalstanze

Country Status (1)

Country Link
EP (2) EP0100283B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397625B (de) * 1987-12-15 1994-05-25 Amada Co Ltd Manipulator für eine blechbiegemaschine und mit diesem manipulator ausgestatteter roboter
AT402372B (de) * 1988-01-29 1997-04-25 Amada Co Ltd Blechbiegemaschine mit einem manipulator und einer detektorvorrichtung für die lage des werkstückes
EP0865846A4 (de) * 1995-11-20 1999-01-27 Amada Co Ltd Stanzmaschine und stanzverfahren

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3422250A1 (de) * 1984-06-15 1985-12-19 C. Behrens Ag, 3220 Alfeld Schneidpresse mit werkzeugmagazin
DE4019141C1 (en) * 1990-06-14 1991-12-19 Mannesmann Ag, 4000 Duesseldorf, De Automatic metal press system - involves upper and lower tool carrier plates which can move sideways
US5669866A (en) * 1996-06-10 1997-09-23 W. A. Whitney Co. Punch press with tool changer
US8707841B2 (en) * 2011-11-11 2014-04-29 Wilson Tool International Inc. Punch assemblies and universal punch therefor
CN104162574A (zh) * 2014-07-16 2014-11-26 苏州市天烨机械工程有限公司 多头式安全冲孔装置
CN104550423B (zh) * 2015-01-05 2016-08-24 山东金博利达精密机械有限公司 一种梯式桥架帮孔自动加工生产线及加工方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996025A (en) * 1956-08-16 1961-08-15 Danly Mach Specialties Inc Readily changeable die assembly for power presses
US3111100A (en) * 1958-01-16 1963-11-19 Danly Mach Specialties Inc Quick die change press
FR1352964A (fr) * 1963-01-09 1964-02-21 Banc de poinçonnage
US3400836A (en) * 1966-12-28 1968-09-10 Budd Co Retracting clamp
US3449991A (en) * 1967-02-06 1969-06-17 Dennis Daniels Punch press
DE1752546C2 (de) * 1968-06-12 1973-09-20 C. Behrens Ag, 3220 Alfeld Sicherheitsvorrichtung an einem Werk Stuckspanner fur Koordinatentische an Revol verstanzen
US3758099A (en) * 1971-07-29 1973-09-11 Whitney Corp W Clamp with workpiece locator
US3835743A (en) * 1973-06-06 1974-09-17 Warner Swasey Co Punch press workholder
IT1060150B (it) * 1976-04-14 1982-07-10 Sacmi Dispositivo per il posizionamento di fogli di laminato su un convogliatore
DE2635003C2 (de) * 1976-08-04 1986-01-16 Trumpf Maschinen AG, Zug Maschine zum Lochen, Ausstanzen und gegebenenfalls Nibbeln
DE2738344C2 (de) * 1977-08-25 1986-01-16 Trumpf Maschinen AG, Zug Stanzmaschine
IT1123708B (it) * 1979-09-12 1986-04-30 Salvagnini Transferica Spa Macchina punzonatrice automatica
JPS6020094B2 (ja) * 1979-12-18 1985-05-20 株式会社 アマダ ワ−ククランプ装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT397625B (de) * 1987-12-15 1994-05-25 Amada Co Ltd Manipulator für eine blechbiegemaschine und mit diesem manipulator ausgestatteter roboter
AT402372B (de) * 1988-01-29 1997-04-25 Amada Co Ltd Blechbiegemaschine mit einem manipulator und einer detektorvorrichtung für die lage des werkstückes
EP0865846A4 (de) * 1995-11-20 1999-01-27 Amada Co Ltd Stanzmaschine und stanzverfahren
US6145424A (en) * 1995-11-20 2000-11-14 Amada Company, Limited Punching machine and method thereof
CN1064868C (zh) * 1995-11-20 2001-04-25 阿曼德有限公司 冲压机及其加工方法
US7131362B1 (en) 1995-11-20 2006-11-07 Amada Company Limited Punching machine and method thereof

Also Published As

Publication number Publication date
EP0100283A3 (en) 1984-04-11
EP0100282B1 (de) 1987-05-06
EP0100282A1 (de) 1984-02-08
EP0100283B1 (de) 1986-12-30

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