EP0580124B1 - Multiple tool for punch press - Google Patents

Multiple tool for punch press Download PDF

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Publication number
EP0580124B1
EP0580124B1 EP93111604A EP93111604A EP0580124B1 EP 0580124 B1 EP0580124 B1 EP 0580124B1 EP 93111604 A EP93111604 A EP 93111604A EP 93111604 A EP93111604 A EP 93111604A EP 0580124 B1 EP0580124 B1 EP 0580124B1
Authority
EP
European Patent Office
Prior art keywords
punch
punches
stripper guide
guide
driver
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
EP93111604A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0580124A1 (en
Inventor
Hiroshi Saito
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 Metrecs Co Ltd
Original Assignee
Amada Metrecs Co 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 Metrecs Co Ltd filed Critical Amada Metrecs Co Ltd
Publication of EP0580124A1 publication Critical patent/EP0580124A1/en
Application granted granted Critical
Publication of EP0580124B1 publication Critical patent/EP0580124B1/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
    • B21D28/125—Punching using rotatable carriers with multi-tools
    • 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

Definitions

  • the present invention relates to a multiple tool for a punch press of the type wherein a workpiece can be moved into a working position required in a plane substantially perpendicular to the direction of punching, and which press includes an upper tool holding member, comprising a stripper guide adapted to be mounted movably up and down on the upper tool holding member, a plurality of punches arranged circularly on the stripper guide and guided for movement up and down within the stripper guide, and a punch driver disposed above the punches for selectively striking one of the plurality of punches, the punch driver being disposed such as to be movable up and down in the stripper guide.
  • the multiple tool is complicated in structure, low in precision, and high in cost.
  • the punches which are not used for punching are moved up and down a rather complicated mechanism is needed to precisely position the punches.
  • the technical problem underlying the present invention therefore is to provide a multiple tool which as a unit can be applied to a punch press without the need of modifications of the pitman and which is simple in structure and small in size.
  • the punch driver is arranged such as to be rotatable relative to the stripper guide into a working position required and is formed with a plurality of punch through-spaces that allow heads of the punches except the one punch selected to pass through said punch through-spaces, and that the punch driver is provided with a circumferential groove by which the heads of all punches are caught to limit their downward movement relative to the punch driver.
  • a workpiece is located above a die to be mated with any required punch of the multiple tool, and the punch driver is rotated to index the strike portion of the punch driver to above a punch.
  • the punch driver is struck by a striker of a punch press
  • the stripper guide is first moved downward to sandwich the workpiece between the stripper guide and the die.
  • the punch driver is further moved downward, since the strike portion strikes the punch located under the strike portion, the lower end of the punch is projected into the die to punch the workpiece.
  • the heads of the other remaining punches are moved into the through-spaces of the punch driver, and therefore the lower ends of the other remaining punches will not project toward the die and the workpiece.
  • the striker is moved upward.
  • the punch is also moved upward since the circumferential groove formed in the punch driver catches the head portion of the punch.
  • the stripper guide is also moved upward away from the workpiece.
  • Fig. 5 shows a turret punch press 1 as an example of the punch press.
  • This turret punch press 1 is composed of a base 3, two column frames 5 and 7 provided vertically on both sides of the base 3, and an upper frame 9 provided on the upper side of the column frames 5 and 7.
  • a disk-shaped upper turret (upper die holding member) 15 is provided on the lower side of the upper frame 9 so as to be rotatable about an upper rotary axle 17.
  • a lower disk-shaped turret (lower die holding member) 23 is provided on the upper side of the base 3 so as to be rotatable about a lower rotary axle 25 in oppositional positional relationship with respect to the upper turret 15.
  • Conventional punches 11 and a punch package (upper multiple tool) 13 including a plurality of punches arranged circularly according to the present invention are removably attached to the upper turret 15, as upper tools.
  • Conventional dies 19 and a die package (lower multiple tool) 21 including a plurality of dies arranged circularly are removably attached to the lower turret 23, as lower tools.
  • the upper conventional punch 11 and the lower conventional die 19 form a pair of tools
  • the punches of the upper punch package 13 and the the dies of the lower die package 21 form a plurality of pairs of tools.
  • a ram 29 having a striker 27 is provided on the lower side of the upper frame 9 so as to be movable up and down, to strike the conventional punches 11 or the punch package 13.
  • the upper turret 15 and the lower turret 23 are both controllably rotated by a turret servomotor (not shown) mounted on the frame.
  • a turret servomotor (not shown) mounted on the frame.
  • a fixed table (not shown) is provided at the middle upper portion of the base 3.
  • a pair of movable tables 31 are supported on both sides of the fixed table in the direction perpendicular to the sheet of the drawing in Fig. 5.
  • the pair of movable tables 31 are movable in the Y-axis direction (in the front and rear direction or the right and left direction in Fig. 5).
  • a carriage base 33 is fixed to the movable table 31 in such a way as to cross the fixed table.
  • the carriage base 33 is provided with a carriage 35 so as to be movable in the X-axis direction (perpendicular to the sheet of the drawing of Fig. 5).
  • the carriage 35 is provided with a work clamp 37 for clamping an end of a plate-shaped workpiece W.
  • the workpiece W can be located between the upper turret 15 and the lower turret 23, by moving the movable table 31 in the Y-axis direction and the carriage 35 in the X-axis direction.
  • the workpiece W located as described above can be punched by a pair of any required conventional punch 11 and die 19, or by a pair of punch and die packages 13 and 21, which are selectively located under the striker 27 by rotating the upper turret 15 and the lower turret 23 .
  • the multiple tool 39 for the punch press according to the present invention will be described in detail hereinbelow.
  • the multiple tool 39 is composed of the punch package 13 and the die package 21, as already described in the above.
  • the punch package 13 is provided with a cylindrical stripper guide 41 supported by the upper turret 15 so as to be movable only up and down.
  • the stripper guide 41 is prevented from rotating relative to the upper turret 15 by a suitable means such as a key that may be provided on the stripper guide 41 and a key way that may be formed in the upper turret 15, the key and key way being engaged with each other.
  • the upper flange portion 43 of the stripper guide 41 is fitted to the lower flange portion 47 of a cylindrical rotary tube 45.
  • a guide spring 51 is disposed via a thrust bearing 201 between the lower surface of the flange portion 47 of the rotary tube 45 and the bottom surface of a stepped bore 49 formed in the upper turret 15, so that the stripper guide 41 is urged upward.
  • the stripper guide 41 is formed with an inner bore 53 opening upward on the upper side thereof.
  • a plurality of punches 57 are arranged circularly at regular intervals along the inner circumferential surface of this inner bore 53 so as to be movable up and down.
  • These punches 57 are designated as 57A, 57B, ..., 57J, because the end shapes thereof are all different from each other, respectively.
  • Each of these punches 57A, 57B, ...., 57J is formed with a head portion 59, a large-diameter portion 61 serving as a guide portion, an intermediate diameter portion 63, and a small-diameter punching portion 65A, 65B, ..., 65J, respectively in order from the upper side to the lower side.
  • the large-diameter portion 61 is supported by the bottom portion 55 so as to be slidable in the vertical direction.
  • a key 61a provided on the large-diameter portion 61 is engaged with a key way 55a formed in the bottom portion 55, so that the punch 57 is prevented from rotating relative to the bottom portion 55.
  • each of these punch portions 65A, 65B, ..., 65J is different from each other in diameter size as shown in Fig. 3 or even in cross section (e.g., square, hexagonal, etc.). Therefore, it is possible to punch holes of different dimensions or shapes in a workpiece W by appropriately selecting one of the punches 57A, 57B, ...., 57J.
  • a guide plate 67 is provided at the lower end of the stripper guide 41, and stepped holes 69 are formed circularly in the guide plate 67.
  • a hold spring 71 is disposed between the bottom surface 69 of each of the stepped holes and the lower end of the large diameter portion 61 of each of the punches 57 via a washer 203, respectively, in order to always urge the respective punches 57A, 57B, ..., 57J upward.
  • a plurality of circular stripper plates 73 are disposed circularly, at the lower end of the guide plate 67 to guide the punching portions 65A, 65B, ..., 65J of the punches 67 by a plurality of holes formed in the stripper plates 73, respectively.
  • a retaining plate 75 is fixed to the lower surface of the guide plate 67, and the stripper plates 73 are engaged with circular-arc-shaped recesses 75a (see Fig. 3) formed in the outer circumferential surface of the retaining plate 75.
  • Lock pins 77 are provided on the guide plate 67 to fix the stripper plate 73 relative to the guide plate 67.
  • a ring-shaped rotary plate 79 is fitted to the upper portion of the stripper guide 41 via a ring 81 so as to be rotatable but not to be movable up and down relative to the stripper guide 41.
  • a central hole 83 is formed at the center of the rotary plate 79 to guide a first punch driver 85 so as to be movable up and down.
  • a key 99 fixed to the first punch driver 85 is engaged with a key way 79a formed in the rotary plate 79, so that a rotation of the first punch driver 85 relative to the rotary plate 79 is prevented.
  • a flange-shaped second punch driver (punch driver) 87 is fixed with a bolt 89.
  • the second punch driver 87 is formed with a T-shaped cross-section circumferential groove 91 on the lower surface thereof, in such a way that the head portions 59 of the punches 57 can be caught by this T-shaped circumferential groove 91.
  • a plurality of punch through-spaces 93 are formed circularly at the regular intervals that correspond to the intervals at which the the plurality of punches 57 is arranged on the bottom portion 55, except at a position 95 in Fig. 1.
  • a portion of the second punch driver 87 at the position 95 will be called a strike portion 95 hereinafter.
  • This strike portion 95 can be indexed to over any one of a plurality of punches 57, for instance to over the punch 57A by rotating the second punch driver 87 relative to the stripper guide 41.
  • a plurality of backup pins 97 are arranged in a the through-spaces 93 via washer S, respectively so as to be movable up and down relative to the second punch driver 87.
  • the backup pins 97 are designed such that the lower end thereof are slightly above the head of the punch 57B, 57C, ..., 57J so as not to contact those heads.
  • the second punch driver 87 is rotatable relative to the punches 57A, 57B,..., 57J.
  • the rotary plate 79 is formed with a plurality of inner holes 101 opening downward and arranged so as to face the backup pins 97, respectively. The head of the backup pin 97 is therefore disposed in each of the inner hole 101.
  • a backup spring 103 is provided in each of the inner holes 101 to urge backup pin 97 downward.
  • the backup pins 97 and the backup springs 103 serve to suppress vibrations of the punches 57 not used during a punching, and further to allow the punches 57 to move upward for relief where necessary.
  • a head plate 105 is fixed to the upper end surface of the first punch driver 85 with a plurality of bolts 107.
  • a stripping spring 109 formed of an elastic material such as urethane rubber, for instance is interposed between the lower surface of the head plate 105 and the upper surface of the rotary driver 79.
  • the rotary plate 79 and the aforementioned rotary tube 45 are coupled to each other by a key 111 fixed to the rotary tube 45 and a key way 79b formed in the rotary plate 79.
  • the rotary plate 79 is movable up and down, but is prevented from rotating relative to the rotary tube 45.
  • a gear tube 115 is rotatably supported by a bearing 113 on the upper side of the upper turret 15 so as to enclose the outer circumferential surface of the rotary tube 45.
  • This gear tube 115 is formed with a gear 117 on the outer circumferential surface thereof and with a key groove 119 on the inner circumferential surface thereof.
  • a head portion of the key 111 of the rotary tube 45 is engaged with this key groove 119.
  • a gear 123 rotated by a suitable servo motor through a suitable gear transmission mechanism (indexing device) 121 is in mesh with the gear 117.
  • a die package 21 is disposed in oppositional positional relationship with respect to the punch package 13.
  • a plurality of dies 125 are arranged on the die package 21.
  • a plurality of dies 125A, 125B, ...,125J are arranged so as to face the punches 57A, 57B, ..., 57J, as shown in Fig. 4.
  • the dies 125A, 125B, ..., 125J are formed with die holes 127A, 127B, ..., 127J, respectively; the die holes 127A, 127B, ...127J are adapted to be fitted to the to-be-mated punching portions 65A, 65B, ..., 65J of the punches 57, respectively.
  • the upper and lower turrets 15 and 23 are rotated to index any required punch package 13 and the die package 21 to under the striker 27. Further, the movable table 31 and the carriage 35 are moved to locate the workpiece W to above the required die 125A, for instance.
  • the indexing device 121 is actuated, the gear tube 115 is rotated so that the rotation thereof is transmitted from the rotary tube 45 to the rotary plate 79 and further to the first punch driver 85. Therefore, it is possible to index the strike portion 95 of the second punch driver 87 to over the required punch 57A corresponding to required die 125A, for instance.
  • the ram 29 of the punch press is actuated to move down the striker 27 for striking the head plate 105.
  • the rotary plate 79, the stripper guide 41, the rotary tube 45, and the first and second punch drivers 85 and 87 are moved down together against the urging force of the guide spring 51, without compressing the stripping spring 109.
  • the stripper plates 73 are brought into contact with the workpiece W, and the workpiece W is sandwiched between the die 125 and the stripper guide 41.
  • the striker 27 is further moved downward, only the first and second punch drivers 85 and 87 are further moved downward by compressing the stripping spring 109.
  • the strike portion 95 strikes the head portion 59 of the punch 57A.
  • the punch 57A is moved downward by compressing the hold spring 71, so that the punching portion 65A of the punch 57A projects from the lower surface of the stripper plate 73 to punch out the workpiece W and further into the die hole 127A of the die 125A, and punching processing being completed as shown in Fig. 2.
  • the punches 57B, 57C,..., 57J not used for the punching are moved upward relative to the second punch driver 87.
  • the backup pins 97 urged by the backup springs 103, respectively are brought into contact with the head portions 59 of the punches 57B, ..., 57J, so that these punches 57B, ..., 57J are not jumped upward due to a shock of the punching processing.
  • the elastic force of the hold spring 71 is determined stronger than that of the backup spring 103; thus, the other remaining punches 57B, ..., 57J not used are not projected downward out of the lower surface of the stripper plates 73.
  • the first and second punch drivers 85 and 87 are first moved upward by a restoration force of the stripping spring 109. Then, the punch 57A whose punching portion 65A was inserted into the die hole 127A is moved upward to the position flush with the other remaining punches 57B, .., 57J because the head portion 59 of the punch 57A is caught by the circumferential groove 91 formed in the second punch driver 87.
  • the upper surface of the second punch driver 87 is in contact with the lower surface of the rotary plate 79 by the restoration force of the stripping spring 109.
  • the punches 57B, 57C,..., 57J is located in the original positions in the vertical direction relative to the second punch driver 87, and the backup pins 97 are in contact with the washers S located at the upper surface of the second punch driver 87, respectively; therefore the lower ends of the backup pins 97 are away from the head portions 59 of the punches 57B, 57C,...., 57J, respectively, as shown in Fig. 1.
  • the second punch driver 87 it is possible to rotate the second punch driver 87 to further index the strike portion 95 to any required one of the punches 57A, 57B, ..., 57J, without any interference.
  • the circumferential groove 91 engaged with the head portions 59 of the punches 57 is of circular shape, the second punch driver 87 can rotate relative to the punches 57.
  • the final gear 123 of the indexing device 121 is in mesh with the gear 117 of the gear tube 115, it is possible to index the strike portion 95 to over any required punch 57A, for instance by rotating the second punch driver 87.
  • the multiple tool since a plurality of punches 57 are housed in the punch package (upper multiple tool) 13 and further arranged circularly within the stripper guide 41 fitted to the upper turret (upper die holding member) 15 so as to be movable up and down, the multiple tool is simple in structure and easy to secure the processing precision, thus improving the punching quality. Further, since the structure is simple, the manufacturing cost can be reduced.
  • the punching processing can be made by indexing only the strike portion 95 of the second punch driver 87 to any required punch (e.g., 57A) by use of the indexing device 121, to strike only the required punch, without moving the other remaining punches up and down within the stripper guide 41, it is possible to locate the workpiece W accurately at only the required punch position accurately, irrespective of the positions of the other remaining punches, thus improving the working efficiency of the punching processing.
  • the punching processing can be made by indexing the strike portion 95 of the second punch driver 87 to any required punch (e.g., 57A), by use of the indexing device 121, without moving the striker and the die package 21, the structure is further simplified for further reduction of manufacturing cost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
EP93111604A 1992-07-21 1993-07-20 Multiple tool for punch press Expired - Lifetime EP0580124B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4193544A JP2580440B2 (ja) 1992-07-21 1992-07-21 パンチプレス用多連金型
JP193544/92 1992-07-21

Publications (2)

Publication Number Publication Date
EP0580124A1 EP0580124A1 (en) 1994-01-26
EP0580124B1 true EP0580124B1 (en) 1997-06-04

Family

ID=16309839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111604A Expired - Lifetime EP0580124B1 (en) 1992-07-21 1993-07-20 Multiple tool for punch press

Country Status (3)

Country Link
EP (1) EP0580124B1 (ja)
JP (1) JP2580440B2 (ja)
DE (1) DE69311217T2 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370467C (zh) * 2001-03-29 2008-02-20 阿玛达美国公司 冲压装置
DE102006049044A1 (de) * 2006-10-18 2008-04-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug zum Bearbeiten von plattenartigen Werkstücken

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5848563A (en) * 1992-07-21 1998-12-15 Amada Metrecs Company Limited Multiple tool for punch press
JPH1066293A (ja) * 1996-08-12 1998-03-06 Ebara Corp キャンドモータ
EP1057551A1 (en) * 1999-05-25 2000-12-06 RAINER S.r.l. A multiple punch unit and a machine tool provided with such multiple punch unit
US6279445B1 (en) * 1999-11-01 2001-08-28 Wilson Tool International, Inc. Multi-tool alignment apparatus
TW553812B (en) * 2001-03-29 2003-09-21 Amada America Inc Press apparatus, striker control modular tool apparatus and programmable method for punching apertures into a workpiece
EP2522443B1 (de) 2008-10-18 2014-07-30 TRUMPF Werkzeugmaschinen GmbH + Co. KG Bearbeitungsprogramm zum Betreiben einer Stanzmaschine zum stanzenden Bearbeiten von Werkstücken, insbesondere von Blechen
DE102015112959A1 (de) * 2014-10-13 2016-04-14 Sk-Technologies Ug (Haftungsbeschränkt) Presse zum hauptzeitparallelen Arbeiten
WO2020083866A1 (de) * 2018-10-22 2020-04-30 Ehrt Maschinenbau Gmbh Stanzwerkzeug
CN112427524B (zh) * 2020-11-03 2022-11-18 贵州航天新力科技有限公司 法兰翻边内旋压复合成型方法及装置
CN112475001A (zh) * 2020-11-26 2021-03-12 东风柳州汽车有限公司 车架纵梁的板材冲孔模具
CN113579044B (zh) * 2021-07-24 2023-01-20 武汉晟和自动化模冲有限公司 一种多工位汽车部件自动化冲压模具
CN114749551B (zh) * 2022-05-06 2024-04-26 宁波鸿云精密机械有限公司 一种用于梭芯套加工的打孔设备

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579217A1 (en) * 1992-07-14 1994-01-19 Amada Metrecs Company, Limited Multiple tool for punch press

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5062337A (en) * 1989-05-12 1991-11-05 Strippit, Inc. Indexable multi-tool for punch press
US4929276A (en) * 1989-05-22 1990-05-29 Murata Wiedemann, Inc. Multitool punch holder

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0579217A1 (en) * 1992-07-14 1994-01-19 Amada Metrecs Company, Limited Multiple tool for punch press

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370467C (zh) * 2001-03-29 2008-02-20 阿玛达美国公司 冲压装置
DE102006049044A1 (de) * 2006-10-18 2008-04-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug zum Bearbeiten von plattenartigen Werkstücken
DE102006049044B4 (de) * 2006-10-18 2018-01-11 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug zum Schneiden von plattenartigen Werkstücken

Also Published As

Publication number Publication date
JPH0631356A (ja) 1994-02-08
EP0580124A1 (en) 1994-01-26
DE69311217D1 (de) 1997-07-10
DE69311217T2 (de) 1997-09-18
JP2580440B2 (ja) 1997-02-12

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