US3678562A - Method and device for exchanging tools on machines having reciprocating movement - Google Patents

Method and device for exchanging tools on machines having reciprocating movement Download PDF

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Publication number
US3678562A
US3678562A US82992A US3678562DA US3678562A US 3678562 A US3678562 A US 3678562A US 82992 A US82992 A US 82992A US 3678562D A US3678562D A US 3678562DA US 3678562 A US3678562 A US 3678562A
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US
United States
Prior art keywords
tool
holder
machine
parts
locking means
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
US82992A
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English (en)
Inventor
Berthold Leibinger
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.)
Trumpf SE and Co KG
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Trumpf SE and Co KG
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Filing date
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Publication of US3678562A publication Critical patent/US3678562A/en
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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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53552—Valve applying or removing
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/10—Process
    • 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
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1729—Reciprocating tool machine tool [e.g., broaching machine, shaping machine, etc.]

Definitions

  • Each tool set can comprise, for example, a punch or nibbling die with a cooperating bottom die, a stamping tool with top and bottom dies, and similar sets.
  • the punching tool for example, usually is arranged in an upper tool carrier, and the associated bottom die in a lower tool carrier. This also holds true for so-called nibbling machines and the like.
  • the punch is replaced first and then the bottom die is replaced. To do this, the operator must reach into the machine, and this requires corresponding safety measures. There is also a risk that, in exchanging tool sets, tool parts which do not properly fit or mate with each other will be inserted, and this can lead to damage of expensive tool parts and also to damage of the machine.
  • This invention relates to exchanging and interchanging tool sets relative to a machine having a reciprocating movement and, more particularly, to a novel, improved, safer and more efficient method and apparatus for effecting such exchange or interchange, and substantially reducing the time required therefor.
  • the tool parts of each set are positioned in a holder.
  • the parts are retained in the holder by suitable retaining elements, and the holder is then inserted into the machine.
  • suitable locking means of the machine retain the parts of the tool set in the machine.
  • the retaining elements of the holder are then loosened and the holder is withdrawn from the machine.
  • punching machines, nibbling machines, etc. also include other tool parts such as, for example, a stripper, pressure pads, etc.
  • other tool parts such as, for example, a stripper, pressure pads, etc.
  • any required additional component such as a stripper, pressure pads, etc., are also inserted in the holder and retained therein by means of corresponding elements of the holder.
  • the retaining elements of the holder are moved automatically into their release position, and the locking means of the machine are moved automatically into their tool part locking positions.
  • This can be effected by having the holder actuate a switch, open an air pressure or oil pressure valve of a servo-mechanism, or merely strictly mechanically actuate the locking means of the machine, for example, through the medium ofa linkage or the medium of levers.
  • the invention device for use with a machine having a punch and a bottom die, is designed as a holder provided with two superposed retaining arms, one arm being assigned to one part of the tool set and the other arm to the other part of the tool set.
  • This holder is comparable to an insertion box which is loaded or charged before it is introduced into the machine or apparatus.
  • the invention device is designed as a holder with three or more superposed arms, with the center arm being associated with the stripper or the like and the two outer arms with one or the other part of the two parts of the tool set.
  • the holder has clamping and locking means for the individual parts of the tool set and for the stripper, if the latter is provided.
  • clamping and locking means insure a satisfactory fit of these parts in the holder, as well as the correct and accurate association of the parts.
  • the transfer to the gripping elements and holding elements of the machine can occur without trouble, and the parts to be exchanged or interchanged arrive exactly at the correct location of the machine.
  • these terms naturally apply for the opposite processes or operations, such as disassembly, removal, release, etc.
  • a further advantage of the invention is that the retaining arms are fork-shaped, and the fork prongs embrace the part to i be retained laterally, in order to form a holding device or clamping device, the fork prongs bearing particularly on two plane-parallel surfaces of the associated tool part.
  • at least one of the prongs of each fork has an inwardly protruding bolt, stud, strip, etc., engaging a corresponding depression in the part to be retained, and at least one prong or retaining bolt, etc., can be moved transverse to the longitudinal extent of the fork prongs.
  • lf studs or short bolts are used, it is sufficient if one of the fork arms is so elastic that it can be bent resiliently laterally.
  • the retaining studs can be designed preferably as ball snaps.
  • At least one of the retaining bolts and the like is held in its retaining position by means of a spring loaded pivotal lever.
  • This lever then can be turned by hand, or by a corresponding control device, when a certain connecting position or deconnecting position is reached, in order to assume a holding position or a release position, respectively.
  • At least one of the retaining bolts or the like can be controlled by auxiliary power, the control of this auxiliary power being effected arbitrarily by hand, or positively when a certain relative position of the holder and the machine is attained.
  • a control or switching device, released by the holder is used for the control of the auxiliary power in the machine.
  • At least one retaining arm is adjustable relative to another retaining arm, particularly with respect to height or relative vertical spacing.
  • the simplest, and thus the least expensive, realization is the arrangement of the forks on a threaded spindle with corresponding supporting nuts and lock nuts.
  • the tool parts and, when provided, the stripper, etc. have at least one gripping surface or groove for receiving a corresponding chucking member with a chucking wedge which can be displaced in the direction of the tool movement in the machine.
  • these chucking wedges are activated to press the parts to be retained against corresponding stop surfaces of the machine or of the tool carriers. lnversely, the chucking wedges are withdrawn only when the parts to be removed from the machine are exactly above the seats of the holder to carry the parts.
  • the tool, the bottom die, and the stripper, etc. have conical parts cooperating with corresponding counterconical parts of the machine.
  • the inter-cooperating conical parts must be arranged to permit insertion and removal transversely of the longitudinal axis of the cones.
  • the movement of the holder is controlled by an automatic tool changing device.
  • an automatic tool changing device can be used in connection with a magazine which performs automatically a change of tools after one or several operations.
  • the control can be effected by punch cards, magnetic tapes, etc.
  • An object of the invention is to provide an improved method for exchanging and interchanging tool sets relative to a machine having a reciprocating movement.
  • Another object of the invention is to provide an improved apparatus for carrying out this method.
  • a further object of the invention is to provide such a method and apparatus in which the time required to exchange or interchange tools is greatly reduced.
  • Another object of the invention is to provide such a method and apparatus with which safety devices, necessary only during changing of tools, are no longer necessary.
  • FIG. 1 is a side elevational view of a holder embodying the invention before insertion into a machine whose tool carrier is illustrated in vertical section;
  • FIG. 2 is a view, similar to FIG. 1, illustrating the holder in the limiting insertion position
  • FIG. 3 is a view, similar to FIG. 2, illustrating the locking position ofa tool set including a stripper;
  • FIG. 4 is a view, similar to FIG. 3, illustrating the machine in operating position and with the holder removed;
  • FIG. 5 is a side elevation view of the holder per se
  • FIG. 6 is a sectional view taken along the line VI-VI of FIG. 5;
  • FIG. 7 is a side elevation view of a bottom die
  • FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 7.
  • a tool set holder 1 embodying the invention, has three superposed tool part retaining arms 2, 3 and 4.
  • Upper arm 4 serves to carry a punch
  • center arm 3 serves to carry a stripper 6
  • lower arm 2 serves to carry a bottom die 7.
  • Punch 5, bottom die 7, and stripper 6 form a tool set. Upon occasion, it is customary not to include any stripper in the tool set.
  • the retaining arms are fork-shaped, with the fork prongs 8 and 9 embracing the tool part to be retained laterally thereby.
  • Parallel slots 12 are formed in each tool part to provide stop surfaces 10 and 11 for the inner surfaces of the fork prongs, and the center of each slot 12 is formed with a conical retaining bore or detent 13.
  • Bores 13 are engageable by the respective ends 14 and 15 of retaining bolts 16 and 17 which extend inwardly through each fork prong.
  • retaining bolt 16 is fixedly mounted whileretaining bolt 17 is displaceable, in the direction of the double arrow 18, in a manner which has not been indicated. If holder I is moved in the direction of arrow 19 toward the tool part to be received, fork prongs 8 and 9 move elastically outwardly in the direction of the arrows 20, 21, due to the inwardly protruding retaining bolt ends 14 and 15. This is particularly the case when both supporting bolts are secured fixedly in the associated fork prongs.
  • fork prongs 8 and 9 After bolt ends 14 and 15 have engaged in bores or detents l3, fork prongs 8 and 9 return to their starting position and retain the part to be carried.
  • the spacing between inner faces 22 and 23 of the fork prongs corresponds to the spacing between the bottom surfaces 10 and II of the grooves 12.
  • spring-loaded balls such as ball snaps, can be used, and this makes the lateral elastic yielding of the fork prongs, during assembly thereof with the part to be carried, unnecessary.
  • holder 1 carrying a punch 5, stripper 6 and bottom die 17, is introduced into the opening 25 of the machine in the direction of the arrow 24.
  • chucking pieces 26, 27 and 28, shown in FIG. 3 are moved in the direction of arrows 29 and 30.
  • the chucking wedges 31, 32 and 33 as sociated with chucking pieces 26, 27 and 28 assure conical parts 34, 35 and 36 molded, respectively, on the punch, the bottom die and the stripper, being pressed into corresponding counter-conical seats of the tool carriers of the machine.
  • holder 1 is withdrawn from the machine. The relative positions after withdrawal are indicated in FIG. 4, where the machine is ready for use.
  • a bottom die, or a stripper, or all three the empty holder 1 is inserted into the machine in the direction of arrow 24 of FIG. 1 until retaining bolts 14 and 15 have snapped into the corresponding detent recesses 13. Subsequently, chucking pieces 26, 27 and 28, with their associated wedges, are withdrawn in a direction opposite to the arrows 29 and 30. Unlocking of the tool parts is thus completed, and holder 1, together with any tool parts carried thereby, can be withdrawn in a direction opposite to arrow 24. Another tool set can then be inserted into the machine by another holder 1, having the tool parts already assembled therewith, or by the same holder 1 used to extract the tool parts but now having new tool parts mounted therein.
  • bottom fork 2 is integral with holder 1, while the two upper forks 3 and 4 can be adjusted upwardly and downwardly, as well as laterally, along a threaded bolt 37.
  • Nuts 38 and 39 are provided for locking forks 3 and 4 in adjusted position but, for the sake of clarity, the nuts associated with fork 4 have not been represented.
  • each chucking wedge is provided with an oblong slot which limits this movement, toward both ends, by means of a stationary pin or the like.
  • the longitudinal displacement of parts 26, 27 and 28, and parts 31, 32 and 33, is necessary in order to be able to mount the parts of the tool set, with a stripper or the like, in an unhindered manner.
  • a method for inserting and removing tool sets, each including at least two cooperable tool parts, relative to a machine having a reciprocating movement and including respective locking means for the tool parts comprising the steps of positioning the tool parts, in advance of insertion into the machine, in a tool holder; releasably retaining the tool parts in the tool holder; inserting the holder into the machine; operating the locking means to lock the tool parts, while the latter are still in the holder, in the machine; releasing the holder from the tool parts; and withdrawing the holder from the machine.
  • Apparatus for inserting and removing tool sets each including at least two cooperable tool parts, relative to a machine having a reciprocating movement and including respective locking means for the tool parts, said apparatus comprising a tool holder including at least two superposed arms, with the uppermost arm being arranged to releasably retain one tool part and the lowermost arm being arranged to releasably retain the other tool part.
  • each upper and lower arm of said tool holder has clamping and locking means for the associated tool part; said intermediate arm having clamping and locking means for a stripper or the like associated with the tool set.
  • each arm of said tool holder is a fork-shaped retaining arm; the prongs of each fork being constructed and arranged to embrace the tool part to be held thereby and being engageable on two substantially plane parallel surfaces of the associated tool part.
  • each fork has detent means releasably engageable with a corresponding detent of the tool part to be carried; at least one of the fork prongs having the detent means or the detent means being movable transverse to the longitudinal extent of the fork prongs.
  • said detent means are retaining bolts; at least one retaining bolt being held in position by a spring-loaded pivotal lever.
  • Apparatus as claimed in claim ll including control means controlling the auxiliary power; said control means being actuated by said holder upon insertion into the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Punching Or Piercing (AREA)
US82992A 1969-11-03 1970-10-22 Method and device for exchanging tools on machines having reciprocating movement Expired - Lifetime US3678562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1955193A DE1955193C3 (de) 1969-11-03 1969-11-03 Halter zum Einsetzen und Entnehmen eines Werkzeuges in eine bzw. aus einer Maschine

Publications (1)

Publication Number Publication Date
US3678562A true US3678562A (en) 1972-07-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US82992A Expired - Lifetime US3678562A (en) 1969-11-03 1970-10-22 Method and device for exchanging tools on machines having reciprocating movement

Country Status (7)

Country Link
US (1) US3678562A (fr)
JP (1) JPS546751B1 (fr)
CH (1) CH537246A (fr)
DE (1) DE1955193C3 (fr)
FR (1) FR2066940B1 (fr)
GB (1) GB1307093A (fr)
SE (1) SE383110B (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461068A (en) * 1978-09-14 1984-07-24 L. Schuler Gmbh Automatic slotting apparatus with tool changing device
US4485549A (en) * 1983-05-09 1984-12-04 W. A. Whitney Corp. Apparatus for changing the tools of a punch press
US4486941A (en) * 1981-09-04 1984-12-11 W. A. Whitney Corp. Punch press with automatic tool changer
US4649622A (en) * 1984-09-04 1987-03-17 W. A. Whitney Corp. Tool changing apparatus for a punch press
US4951375A (en) * 1988-05-27 1990-08-28 Trumpf Gmbh & Co. Punch press utilizing workpiece guidance system to effect tool changing
EP0891823A2 (fr) * 1997-07-16 1999-01-20 RAINER S.r.l. Element de préhension pour un poinçon ou une matrice d'une machine à poinçonner
US5913760A (en) * 1993-06-28 1999-06-22 Komatsu Ltd. Tool set mounting method
WO2001017857A1 (fr) * 1999-09-07 2001-03-15 Recot, Inc. Modules de machoires de soudage permettant de modifier les sachets en sachets refermables pour systeme de formage vertical, remplissage, et scellage
US20040045424A1 (en) * 2000-11-06 2004-03-11 Nobuyuki Ikeda Punch press, method of replacing punch and die for punch press, and punch system
US20070191199A1 (en) * 2006-02-16 2007-08-16 Ronald Palick Cartridge for machine tool
US20070186744A1 (en) * 2006-02-16 2007-08-16 Lee Brian J Machine tool cartridge with information storage device, smart cartridge systems, and methods of using smart cartridge systems
US20120309600A1 (en) * 2011-05-31 2012-12-06 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool Cartridges for Sheet Metal Processing Tools
US20130212988A1 (en) * 2010-02-26 2013-08-22 Cfs Germany Gmbh Method for Changing the Upper and Lower Tool of a Packaging Machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55140512A (en) * 1979-04-20 1980-11-04 Mitsuishi Fukai Iron Works Molding machine used for brick* etc*
JPS5820023U (ja) * 1981-07-31 1983-02-07 松下電工株式会社 瓦
DE3440224C2 (de) * 1984-11-03 1994-06-23 Trumpf Gmbh & Co Werkzeugwechselvorrichtung an einer Stanz- oder Nibbelmaschine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540836A (en) * 1947-06-07 1951-02-06 E P Lawson Co Inc Knife changing device
US3309765A (en) * 1964-06-13 1967-03-21 Kirsten Paul Arthur Apparatus and methods for replacing the knife units of a woodcutting machine
US3368625A (en) * 1964-08-24 1968-02-13 Shell Oil Co Process for consolidating earth formations

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB938619A (en) * 1960-12-14 1963-10-02 British Iron Steel Research Improvements in or relating to tool changers for forging presses

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2540836A (en) * 1947-06-07 1951-02-06 E P Lawson Co Inc Knife changing device
US3309765A (en) * 1964-06-13 1967-03-21 Kirsten Paul Arthur Apparatus and methods for replacing the knife units of a woodcutting machine
US3368625A (en) * 1964-08-24 1968-02-13 Shell Oil Co Process for consolidating earth formations

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461068A (en) * 1978-09-14 1984-07-24 L. Schuler Gmbh Automatic slotting apparatus with tool changing device
US4486941A (en) * 1981-09-04 1984-12-11 W. A. Whitney Corp. Punch press with automatic tool changer
US4485549A (en) * 1983-05-09 1984-12-04 W. A. Whitney Corp. Apparatus for changing the tools of a punch press
US4649622A (en) * 1984-09-04 1987-03-17 W. A. Whitney Corp. Tool changing apparatus for a punch press
US4951375A (en) * 1988-05-27 1990-08-28 Trumpf Gmbh & Co. Punch press utilizing workpiece guidance system to effect tool changing
US5913760A (en) * 1993-06-28 1999-06-22 Komatsu Ltd. Tool set mounting method
EP0891823A2 (fr) * 1997-07-16 1999-01-20 RAINER S.r.l. Element de préhension pour un poinçon ou une matrice d'une machine à poinçonner
EP0891823A3 (fr) * 1997-07-16 1999-09-29 RAINER S.r.l. Element de préhension pour un poinçon ou une matrice d'une machine à poinçonner
US6200246B1 (en) 1997-07-16 2001-03-13 Rainer S.R.L. Gripper element for a punch or a die of a punching machine
US6665999B1 (en) * 1999-09-07 2003-12-23 Recot, Inc. Seal jaw modules for reclose bag modification to vertical form, fill, and seal packaging system
WO2001017857A1 (fr) * 1999-09-07 2001-03-15 Recot, Inc. Modules de machoires de soudage permettant de modifier les sachets en sachets refermables pour systeme de formage vertical, remplissage, et scellage
US20040045424A1 (en) * 2000-11-06 2004-03-11 Nobuyuki Ikeda Punch press, method of replacing punch and die for punch press, and punch system
US7900543B2 (en) * 2000-11-06 2011-03-08 Amada Company, Limited Punch press, method of replacing punch and die for punch press, and punch system
US7669453B2 (en) * 2006-02-16 2010-03-02 Wilson Tool International Inc. Cartridge for machine tool
WO2007097824A2 (fr) * 2006-02-16 2007-08-30 Wilson Tool International Inc. Cartouche pour machine-outil
WO2007097824A3 (fr) * 2006-02-16 2007-11-15 Wilson Tool Int Cartouche pour machine-outil
US20070186744A1 (en) * 2006-02-16 2007-08-16 Lee Brian J Machine tool cartridge with information storage device, smart cartridge systems, and methods of using smart cartridge systems
US20070191199A1 (en) * 2006-02-16 2007-08-16 Ronald Palick Cartridge for machine tool
US7913533B2 (en) 2006-02-16 2011-03-29 Wilson Tool International Inc. Machine tool cartridge with information storage device, smart cartridge systems, and methods of using smart cartridge systems
US20130212988A1 (en) * 2010-02-26 2013-08-22 Cfs Germany Gmbh Method for Changing the Upper and Lower Tool of a Packaging Machine
US9555513B2 (en) * 2010-02-26 2017-01-31 Gea Food Solutions Germany Gmbh Method for changing the upper and lower tool of a packaging machine
US20120309600A1 (en) * 2011-05-31 2012-12-06 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool Cartridges for Sheet Metal Processing Tools
US9302308B2 (en) * 2011-05-31 2016-04-05 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Tool cartridges for sheet metal processing tools

Also Published As

Publication number Publication date
FR2066940A1 (fr) 1971-08-13
GB1307093A (en) 1973-02-14
JPS546751B1 (fr) 1979-03-31
DE1955193A1 (de) 1971-05-13
FR2066940B1 (fr) 1973-11-23
SE383110B (sv) 1976-03-01
DE1955193B2 (de) 1974-10-31
DE1955193C3 (de) 1975-06-19
CH537246A (de) 1973-05-31

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