US3685380A - Multi-track turret and overload protection - Google Patents

Multi-track turret and overload protection Download PDF

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Publication number
US3685380A
US3685380A US113043A US3685380DA US3685380A US 3685380 A US3685380 A US 3685380A US 113043 A US113043 A US 113043A US 3685380D A US3685380D A US 3685380DA US 3685380 A US3685380 A US 3685380A
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US
United States
Prior art keywords
striker
radially
transport
shear plate
shifting
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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
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US113043A
Inventor
Dennis Daniels
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US Amada Ltd
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Amada Ltd Us
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Publication date
Application filed by Amada Ltd Us filed Critical Amada Ltd Us
Priority to US11304371A priority Critical
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Publication of US3685380A publication Critical patent/US3685380A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00Shaping by press-cutting; Perforating
    • B21D28/02Punching blanks or articles with or without obtaining scrap; Notching
    • B21D28/12Punching using rotatable carriers
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00Cutting by use of rotating axially moving tool
    • Y10T408/36Machine including plural tools
    • Y10T408/37Turret of tools
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8702Clicker die press
    • Y10T83/8704With reciprocating presser
    • Y10T83/8706Laterally movable to selective operative positions
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/869Means to drive or to guide tool
    • Y10T83/8727Plural tools selectively engageable with single drive
    • Y10T83/8732Turret of tools

Abstract

A punch press is provided with turrets having radially spaced tools and a radially shiftable striker for selectively engaging the tools. The striker is carried by a transport mechanism which is shifted by powered means and is vertically slideable relative to the powered means. The powered means include two radially spaced cylinders each containing a piston. A fixed piston rod is connected to the radially inner piston and a moveable piston rod is connected to the radially outer piston and to the transport means. Accurate positioning of the striker is obtained by controlling the relative positions of the pistons and cylinders. The transport means holds the striker for free relative upward movement. A shear plate is positioned over the striker and a backup plate is positioned over the shear plate. The backup plate contains openings for receiving a slug cut from the shear plate by the striker to relieve the striker when overloaded.

Description

United States Patent 1 Daniels [15] 3,685,380 [451 Aug. 22, 1972 [54] MULTI-TRACK TURRET AND OVERLOAD PROTECTION [72] Inventor: Dennis Daniels, Williamsville, NY. [73] Assignee: U.S. Amada, Ltd., Seattle, Wash. [22] Filed: Feb. 19, 1971 [21] Appl. No.: 113,043
[52] US. Cl. ..83/552, 408/35, 83/534 [51] Int. Cl. ..B26d 5/08 [58] Field of Search ...83/552, 618, 214, 534; 408/35 [56] References Cited UNITED STATES PATENTS 4/1942 l-lagerstrom et al. ..83/552 10/1970 Offenstadt ..83/534 Primary Examiner-Willie G. Abercrombie Attorney-Seed, Berry & Dowrey [57] ABSTRACT A punch press is provided with turrets having radially spaced tools and a radially shiftable striker for selectively engaging the tools. The striker is carried by a transport mechanism which is shifted by powered means and is vertically slideable relative to the powered means. The powered means include two radially spaced cylinders each containing a piston. A fixed piston rod is connected to the radially inner piston and a moveable piston rod is connected to the radially outer piston and to the transport means. Accurate positioning of the striker is obtained by controlling the relative positions of the pistons and cylinders. The transport means holds the striker for free relative upward movement. A shear plate is positioned over the striker and a backup plate is positioned over the shear plate. The backup plate contains openings for receiving a slug cut from the shear plate by the striker to relieve the striker when overloaded.
5 Clains, 3 Drawing Figures PATENTEDmsez I972 3,685,380
FIG 3 I INVENTOR. DENNIS DANIELS ATTORNEYS BACKGROUND OF THE INVENTION 1. Field of the Invention This invention pertains to punch presses and particularly to turret type punch presses.
2. Description of the Prior Art Heretofore the maximum number of tools that given turrets could carry was limited by the size and number of tools which could be placed on a single radial track around the turret axis of rotation. The common practice being that all tools were presented below a punching striker at a fixed radial distance from the turret axis. As a result the use of the machine was limited. In addition the radial distance of the single track from the turret axis was determined by the size of the largest tool to be carried on the turret and thus space was wasted between the smaller tools on the track and the periphery of the turret.
A second difficulty in prior art punch presses was that the striker was not provided with an adequate overload mechanism frequently causing damage to the striker or the tool or both when an overload occurred.
SUMMARY OF THE INVENTION It is an object of this invention to increase the number of tools that can be carried on a punch press turret.
It is another object of this invention to provide a turret for a punch press wherein the tools maybe spaced close to the periphery of the turret.
It is another object of this invention to provide a punch press wherein the striker is radially shiftable to engage tools radially spaced from a turret axis.
It is another object of this invention to provide a radially shiftable striker having an overload release to prevent damage when an overload occurs in any of the strikers shiftable positions.
It is another object of this invention to provide an overload mechanism for a conventional single track turret.
Basically the multi-track feature includes upper and lower turrets carrying tools such as a punch and die. At least one tool is spaced at a difierent radial distance from another. Means is provided for shifting the striker radially to position it above the radially spaced tool. In the preferred embodiment the striker is shifted by unique piston and cylinder powered means.
The radial spacing of the tools provides for aligning several smaller tools at radially different distances from the central axis of the turrets to increase the number of tools on the turrets. A further advantage is that a tool may be positioned much closer to the periphery of the turrets allowing for considerably less interference to the work piece holding means and permitting greater work area coverage.
The means for overload protection is incorporated in the shifting punch striker but may also be employed for a non-shiftable striker. Basically the overload protection means includes means for holding the striker for free upward movement, a shear plate positioned over the striker, 6 a backup plate positioned over the shear plate, the backup plate having apertures for receiving a slug cut from the shear plate whereby the punching load over a safe maximum will drive the striker into the 2 shear plate for allowing upward movement of the striker relative to the ram.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective of a punch press embodying the principles of the invention.
FIG. 2 is a fragmentary vertical section taken through a portion of the punch press shown in FIG. 1.
FIG. 3 is a fragmentary plan of the top turret shown in FIG. 2
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates a conventional C-frame punch press 10 housing a work-piece holder 12 and workpiece positioning means 14.
The punch press '10 carries turret mechanism 15 and ram 16 embodying the principles of the invention. The turret mechanism 15 includes upper and lower turrets 20 and 22 keyed to shafts 18 and 19 for rotation about a central axis 17. The turrets contain a plurality of tools, such as punches 23, at least some of which are radially spaced along tracks A, B and C. As is readily apparent a substantially larger number of tools may be positioned on the turrets. For example, a typical installation could utilize more than 30 additional tools. Furthermore, even individual small tools may be positioned on track C further out from the central axis 17 than the larger tools which are required by their size to be positioned on an inner track.
The lower turret 22 is provided with the remaining portion of the tools, such as dies 25, aligned respectively below the corresponding punches 23. Thus the dies 25 are also spaced on tracks that are spaced in radially varying distances from the central axis 17.
The ram 16 includes a conventional eccentric 30 connected in conventional means to a ram body 32 which is mounted for slidable vertical movement in the punch press frame. The ram body is provided with radially spaced recesses 34 corresponding to the radially spaced tracks A, B and C of the turret mechanism 15. A backup plate of hard material is positioned adjacent the ram body and is provided with apertures in alignment with the recesses 34. A shear plate 38 of inexpensive material is readily replaceably positioned against the backup plate 35 and is of a material which will shear at some predetermined stress less than the overload limit of the press.
The ram body 32 is provided with a guide 40 which slidably receives a transport member 42. The transport member slidably receives a striker 44 having an enlarged head to allow the transport member to support the striker while still allowing the striker to move vertically upward relative thereto. Thus it is readily apparent that when the striker 44 is positioned below one of the apertures 36 and above the corresponding tool on the turrets an overload will drive the striker up relative to the transport member 42 pushing a slug from the shear plate 38 into the aperture of the backup plate. In
, other words, the striker, shear plate, and backup plate act much like an inverted punch and die.
The means for radially shifting the striker 44 includes powered means 48. The powered means includes two radially spaced cylinders 49 and 50 separated by a block 51. A piston 52 is slidably received in the cylinder 49 and is fixed to a rigidly mounted piston rod 54. A piston 56 is slidably received in the cylinder 50 and is secured to a movable piston rod 58. The movable piston rod 58 is secured to a coupling 60 that is connected to the transport member 42 to move the transport member radially but allow relative vertical movement between the coupling and the transport member. Suitable control means 62, the details of which are readily apparent to one skilled in the art, are coupled by pneumatic lines to ports 63 provided in each of the cylinders.
While the preferred form of the invention has been illustrated and described, it should be understood that the details are capable of being modified by one skilled in the art without departing from the principles of the invention. Accordingly, the invention is to be limited only by literal interpretation of the claims appended hereto.
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
l. A punch press having multi-track turret mechanism rotatable about a central axis, said turret mechanism including upper and lower turrets for holding a plurality of circumferentially spaced tools some of which are at different radial distances from said central axis, means for rotating said turrets into selected positions, a punch striker, means for selectively shifting the striker radially over the radially spaced tools, and means for driving said striker against the tool in any one of said shifted positions.
2. The punch press of claim 1 said means for shifting the striker including transport means for holding the striker, powered means for shifting the transport means radially, and means for securing the transport means to the powered means for allowing relative vertical motion therebetween so that the striker can be driven downwardly against the tool.
3. The punch press of claim 2 said powered means including a ram having at least two radially spaced cylinders, a piston in each cylinder, a fixed piston rod secured to the radially inner cylinder, a movable piston rod secured to the radially outer piston and to said transport means, and control means for directing pressurized fluid into selected cylinders for shifting the piston'rods and cylinders relative to one another for shifting the transport radially into predetermined positrons.
4. The punch press of claim 1 said means for driving the striker including a backup plate having apertures aligned with the radial positions of the shiftable striker, a shear plate positioned between the striker and the backup plate, said striker shifting means including means for holding the striker for free upward movement whereby an overload will drive the striker up through the shear plate.
5. A punch press having a punch striker, a ram for driving the striker downwardly, means aligned below the striker for holding a tool, means for holding the striker for free upward movement, a shear plate positioned over said striker, a backup plate positioned over said shear plate, said backup plate having at least one opening for receiving a slug cut from said shear plate whereby a punching load over a safe maximum will drive the striker into the shear plate for allowing upward movement of the sirik er rglative to the ram.

Claims (5)

1. A punch press having multi-track turret mechanism rotatable about a central axis, said turret mechanism including upper and lower turrets for holding a plurality of circumferentially spaced tools some of which are at different radial distances from said central axis, means for rotating said turrets into selected positions, a punch striker, means for selectively shifting the striker radially over the radially spaced tools, and means for driving said striker against the tool in any one of said shifted positions.
2. The punch press of claim 1 said means for shifting the striker including transport means for holding the striker, powered means for shifting the transport means radially, and means for securing the transport means to the powered means for allowing relative vertical motion therebetween so that the striker can be driven downwardly against the tool.
3. The punch press of claim 2 said powered means including a ram having at least two radially spaced cylinders, a piston in each cylinder, a fixed piston rod secured to the radially inner cylinder, a movable piston rod secured to the radially outer piston and to said transport means, and control means for directing pressurized fluid into selected cylinders for shifting the piston rods and cylinders relative to one another for shifting the transport radially into predetermined positions.
4. The punch press of claim 1 said means for driving the striker including a backup plate having apertures aligned with the radial positions of the shiftable striker, a shear plate positioned between the striker and the backup plate, said striker shifting means including means for holding the striker for free upward movement whereby an overload will drive the striker up through the shear plate.
5. A punch press having a punch striker, a ram for driving the striker downwardly, means aligned below the striker for holding a tool, means for holding the striker for free upward movement, a shear plate positioned over said striker, a backup plate positioned over said shear plate, said backup plate having at least one opening for receiving a slug cut from said shear plate whereby a punching load over a safe maximum will drive the striker into the shear plate for allowing upward movement of the striker relative to the ram.
US113043A 1971-02-19 1971-02-19 Multi-track turret and overload protection Expired - Lifetime US3685380A (en)

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JP (1) JPS5227393B2 (en)
CA (1) CA942182A (en)
GB (1) GB1378486A (en)
HK (1) HK12876A (en)
SU (1) SU567395A3 (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830129A (en) * 1973-07-09 1974-08-20 Manco Mfg Co Machine tool with swingable tool mount
US4091700A (en) * 1976-02-02 1978-05-30 Jean Cloup Press-head
US4250785A (en) * 1979-06-02 1981-02-17 Yamazaky Iron Works Turret type punch press having a plurality of strikers
US4555966A (en) * 1982-11-06 1985-12-03 Trumpf Gmbh & Co. Punch press with multitool punch assembly
DE3720777A1 (en) * 1987-06-24 1989-01-05 Behrens Ag C REVOLVING CUTTING PRESS
US5119666A (en) * 1988-11-18 1992-06-09 Amada Company, Limited Turret punch press
US5184498A (en) * 1992-02-21 1993-02-09 Amada Mfg. America, Inc. Turret punch press
US5205149A (en) * 1991-09-11 1993-04-27 Amada Mfg. America Inc. Press machine having adjustable striker
EP0555604A2 (en) * 1991-12-16 1993-08-18 Amada Company Limited Turret punch press
US5350347A (en) * 1991-09-05 1994-09-27 Amada Company, Limited Turret punch press
US6148707A (en) * 1991-09-03 2000-11-21 Amada Company, Limited Punch press and method of punching plate-type workpiece by the press
US20020038589A1 (en) * 2000-10-04 2002-04-04 Murata Kikai Kabushiki Kaisha Turret punch press
EP1270108A2 (en) * 2001-06-20 2003-01-02 Murata Kikai Kabushiki Kaisha Punch press
US20040154453A1 (en) * 2003-02-06 2004-08-12 Murata Kikai Kabushiki Kaisha Punch press
WO2012143528A1 (en) * 2011-04-21 2012-10-26 Bam Bundesanstalt Für Materialforschung Und -Prfüfung High-speed compression test device for carrying out compression tests
US20120279369A1 (en) * 2009-12-18 2012-11-08 Amada Company, Limited Punch press
EP2524743A1 (en) * 2011-05-20 2012-11-21 Corrada S.p.A Blanking die with device for replacing at least one punch
CN102886410A (en) * 2012-10-24 2013-01-23 吴江华鹏制罐厂 Punching machine for processing multiple workpieces
US8789451B2 (en) 2011-07-25 2014-07-29 Corrada S.P.A. Blanking die assembly with at least one device for differentially rotating the blanking unit
CN111097830A (en) * 2019-12-30 2020-05-05 东莞市飞尧科技有限公司 Stamping die with intermittent rotation transmission

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0468049B2 (en) * 1988-02-23 1992-10-30 Konitsukusha Kk
WO2020121545A1 (en) * 2018-12-14 2020-06-18 日本電信電話株式会社 Signal processing device, signal processing method, and program

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280701A (en) * 1940-04-11 1942-04-21 John A Hagerstrom Universal die implement
US3533322A (en) * 1967-04-06 1970-10-13 Georges Edmond Offenstadt Automatic control device for a machine-tool

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2280701A (en) * 1940-04-11 1942-04-21 John A Hagerstrom Universal die implement
US3533322A (en) * 1967-04-06 1970-10-13 Georges Edmond Offenstadt Automatic control device for a machine-tool

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3830129A (en) * 1973-07-09 1974-08-20 Manco Mfg Co Machine tool with swingable tool mount
US4091700A (en) * 1976-02-02 1978-05-30 Jean Cloup Press-head
US4250785A (en) * 1979-06-02 1981-02-17 Yamazaky Iron Works Turret type punch press having a plurality of strikers
US4555966A (en) * 1982-11-06 1985-12-03 Trumpf Gmbh & Co. Punch press with multitool punch assembly
US4569267A (en) * 1982-11-06 1986-02-11 Trumpf Gmbh & Co. Multitool punch mechanism
DE3720777A1 (en) * 1987-06-24 1989-01-05 Behrens Ag C REVOLVING CUTTING PRESS
US4976180A (en) * 1987-06-24 1990-12-11 C. Behrens Ag Revolving cutting press
US5119666A (en) * 1988-11-18 1992-06-09 Amada Company, Limited Turret punch press
US6148707A (en) * 1991-09-03 2000-11-21 Amada Company, Limited Punch press and method of punching plate-type workpiece by the press
US5350347A (en) * 1991-09-05 1994-09-27 Amada Company, Limited Turret punch press
US5205149A (en) * 1991-09-11 1993-04-27 Amada Mfg. America Inc. Press machine having adjustable striker
EP0555604A2 (en) * 1991-12-16 1993-08-18 Amada Company Limited Turret punch press
EP0555604A3 (en) * 1991-12-16 1993-12-22 Amada Co Ltd Turret punch press
US5184498A (en) * 1992-02-21 1993-02-09 Amada Mfg. America, Inc. Turret punch press
US6988436B2 (en) * 2000-10-04 2006-01-24 Murata Kikai Kabushiki Kaisha Turret punch press
US20020038589A1 (en) * 2000-10-04 2002-04-04 Murata Kikai Kabushiki Kaisha Turret punch press
US6626076B2 (en) * 2001-06-20 2003-09-30 Murata Kikai Kabushiki Kaisha Punch press
EP1270108A3 (en) * 2001-06-20 2004-04-28 Murata Kikai Kabushiki Kaisha Punch press
EP1270108A2 (en) * 2001-06-20 2003-01-02 Murata Kikai Kabushiki Kaisha Punch press
US20040154453A1 (en) * 2003-02-06 2004-08-12 Murata Kikai Kabushiki Kaisha Punch press
US7461579B2 (en) * 2003-02-06 2008-12-09 Murata Kikai Kabushiki Kaisha Punch press
US20120279369A1 (en) * 2009-12-18 2012-11-08 Amada Company, Limited Punch press
US10507508B2 (en) * 2009-12-18 2019-12-17 Amada Company, Limited Punch press
WO2012143528A1 (en) * 2011-04-21 2012-10-26 Bam Bundesanstalt Für Materialforschung Und -Prfüfung High-speed compression test device for carrying out compression tests
EP2524743A1 (en) * 2011-05-20 2012-11-21 Corrada S.p.A Blanking die with device for replacing at least one punch
ITMI20110904A1 (en) * 2011-05-20 2012-11-21 Corrada Spa Shearing die with device for replacing at least one punch
US8739668B2 (en) 2011-05-20 2014-06-03 Corrado S.p.A. Blanking die with device for replacing at least one punch
US8789451B2 (en) 2011-07-25 2014-07-29 Corrada S.P.A. Blanking die assembly with at least one device for differentially rotating the blanking unit
CN102886410A (en) * 2012-10-24 2013-01-23 吴江华鹏制罐厂 Punching machine for processing multiple workpieces
CN111097830A (en) * 2019-12-30 2020-05-05 东莞市飞尧科技有限公司 Stamping die with intermittent rotation transmission

Also Published As

Publication number Publication date
CA942182A (en) 1974-02-19
HK12876A (en) 1976-03-19
JPS46105761A (en) 1973-03-09
SU567395A3 (en) 1977-07-30
CA942182A1 (en)
GB1378486A (en) 1974-12-27
JPS5227393B2 (en) 1977-07-20

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