US3895550A - Extendable arm punching apparatus - Google Patents

Extendable arm punching apparatus Download PDF

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Publication number
US3895550A
US3895550A US47637574A US3895550A US 3895550 A US3895550 A US 3895550A US 47637574 A US47637574 A US 47637574A US 3895550 A US3895550 A US 3895550A
Authority
US
United States
Prior art keywords
punch
die
tool holder
work sheet
punching apparatus
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
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English (en)
Inventor
Dennis Daniels
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Amada Ltd
Original Assignee
Amada Ltd Us
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Amada Ltd Us filed Critical Amada Ltd Us
Priority to US47637574 priority Critical patent/US3895550A/en
Priority to JP2198375A priority patent/JPS50135689A/ja
Application granted granted Critical
Publication of US3895550A publication Critical patent/US3895550A/en
Priority to JP12874679U priority patent/JPS5630418Y2/ja
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
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/04—Movable or exchangeable mountings for 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
    • B21D28/24—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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/34—Perforating tools; Die holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/654—With work-constraining means on work conveyor [i.e., "work-carrier"]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8727—Plural tools selectively engageable with single drive
    • Y10T83/8729—Predetermined sequence of selection
    • Y10T83/873—Of paired tools

Definitions

  • a smaller punch and die set is spaced longitudinally behind a larger punch and die set and laterally offset in a direction toward the work sheet clamps.
  • the smaller punch and die set is spaced longitudinally forward in a direction toward the work sheet clamps and laterally offset from the larger punch and die set.
  • the tool holder is extendable longitudinally and laterally to accurately align either the large punch and die set or the smaller punch and die set beneath a striker.
  • the upper arm is recessed closely adjacent the smaller punch to reduce interference with the work sheet clamps. In both forms, the tool holder can also be extended further to a tool changing position.
  • This invention pertains to punch presses of the type having the punch and die held in the upper and lower arms, respectively, of a tool holder. It is particularly applicable to punch presses of the type having a duplicator.
  • the holder can carry only one of these set ranges; and to accommodate the second set range, the tool holder is removed from the punching apparatus and replaced with a tool holder having a die set to accommodate the other range.
  • Large tool holders are quite heavy and require two workmen to replace them, which is time-consuming and costly.
  • a punching apparatus of the type having a tool holder with upper and lower arms, large and small punch and die sets.
  • the smaller set is longitudinally spaced from the larger punch and die set and offset laterally from the larger punch and die set.
  • an offset of the smaller punch and die set is in the direction towards the work sheet holding clamps.
  • the tool holder can be extended longitudinally and laterally to shift the center of the large punch and die set out from beneath the striker and to position the smaller punch and die set beneath the striker.
  • a second, further extended position is provided so that the punches and dies in each set can be changed to vary the punch and die sizes within the respective ranges of the large and small sets.
  • FIG. 1 is a perspective of one form of a punching apparatus employing the principles of the invention.
  • FIG. 2 is a vertical section taken along line 2-2 of FIG. 3.
  • FIG. 3 is a fragmentary horizontal section taken along line 33 of FIG. 1.
  • FIGS. 4-6 are operational schematic illustrations showing the three positions of the tool holder of FIG. 1.
  • FIG. 4 is a fully retracted position
  • FIG. 5 shows a longitudinally and laterally extended position
  • FIG. 6 illustrates a further extended position for tool chang-
  • FIG. 7 is a fragmentary vertical section taken along line 7 7 of FIG. 3.
  • FIG. 8 is a fragmentary vertical section taken along line 88 of FIG. 5.
  • FIG. 9 is a fragmentary isometric of a second form of tool holder.
  • FIG. 10 is a schematic, fragmentary, operational plan of the embodiment'of FIG. 9.
  • punching apparatus 10 is provided with a work-supporting table 12 and a conventional duplicator mechanism 14.
  • the duplicator has a probe 16 that can be inserted in a pattern of holes in a templet T, with a pair of work sheet holding clamps l8 gripping a work sheet W and positioning the work sheet in the same pattern as the pattern of holes in the templet.
  • This type of equipment is conventional and well known in the art. It should be understood that the principles of the invention are not limited to duplicator-type punch presses.
  • the punching apparatus also has a conventional ram frame 20 which is provided with a striker 22 (FIG. 2).
  • a tool holder 24 is slidably mounted for movement along its longitudinal and transverse axes between three different positions.
  • the tool holder is of the type commonly referred to as a swan neckand includes integrally connected upper and lower arms 26 and 27, respectively.
  • the tool holder in this invention carries a large punch and die set 30 and a smaller punch and die set 32.
  • die set as used in this application, is intended to refer to a range of punches and dies generally considered usable for a large set and a small set.
  • punch and die set 30 would normally be expected to hold a range of punches and dies of between I inch and 3 /2 inches.
  • Punch and die set 32 would be expected to hold a range of punches and dies varying from 1/32 inch to l A inch. Obviously, however, a single large punch and die and a single small punch and die could still be employed to utilize the principles of the invention.
  • the large punch and die set includes a conventional punch 33 and a conventional die 34.
  • the smaller punch and die set 32 includes a punch 35 and a die 36.
  • the punching apparatus is provided with a primary cylinder 38 pivoted to the table 12 and having a piston rod 39 that is pivotally connected to a slider 40.
  • Slider 40 rides in a guide track 40a and is pivotally connected to a second slider 41 which rides in a guide track 41a on the lower arm 27.
  • Slider 41a is pivotally connected to the piston rod 60.
  • Lateral location of the tool holder in the fully retracted position is determined by an adjustable stop 46. Retraction of the piston rod 39 moves the tool holder longitudinally outwardly and laterally simultaneously. The extent of longitudinal movement is determined by an adjustable stop 48. Lateral movement is determined by a guide mechanism including a cam roller 50 and a sloped track 52. Extension of the tool holder thus moves the cam surface 52 against the roller 50, shifting the tool holder laterally into the position shown in FIG. 5. Exact location of the punch and die set 32 can then be preset by the adjustments 48 and 54. In this position, the smaller punch and die set 32 is thus aligned with the striker axis 44.
  • a secondary cylinder 58 that is pivotally mounted to the lower arm 27.
  • the cylinder is provided with a piston rod 60 that is pivotally connected to the bracket slider 41. Consequently, extension of the piston rod 60 will move the tool holder further longitudinally into the position shown in FIG. 6. In this position, the punch and die sets 30 and 32 are free from the worktable and striker, and the tools can readily be replaced.
  • a spring 62 maintains the tool holder biased toward the cam roller 50 to maintain accurate alignment of the tool holder.
  • buttons 70 In the overall operation of the device of FIGS. 1-8, the operator punches one of three control buttons 70 to energize the cylinders 38 or 58. Assuming a hole is first to be punched with the large punch and die set 30, the piston rod 39 will be extended and the piston rod 60 retracted, as best shown in FIG. 4. Assume next that several small holes will be punched using the punch and die set 32. The operator will push another of the buttons 70, which will cause piston rod 39 to be retracted, bringing the tool holder into the position shown in FIG. 5.
  • An important feature of the invention is that the lateral displacement of the tool holder for using the smaller punch and die set 32 allows the workpiece clamps 18 to approach very closely to the punch 35, thus minimizing the area on the work sheet that cannot otherwise be punched.
  • the upper arm is provided with a forward portion 74 that has a peripheral edge that is recessed as at 76. Thus the workpiece clamp approaching the smaller punch 35 from the rear can move close to the punch.
  • buttons 70 which extends the piston rod 60 to extend the tool holder.
  • FIGS. 9 The embodiment of FIGS. 9 and is in concept basically the same as that of the embodiment of FIGS. 1-8.
  • a swan neck tool holder 80 is slidably mounted on a guide block 82 that is pivotally mounted in a slidable pivot block 83.
  • the tool holder is reciprocated longitudinally along the guide block by a cylinder and piston 38.
  • An adjustable stop rod 84 extends through the guide block and accurately limits the retracted motion of the tool holder to position the smaller punch and die set 32 beneath the striker axis 44.
  • a second adjustable stop 86 is connected to the tool holder and engages the guide block 82 when the tool holder is extended to position the larger punch and die set 30 beneath the striker axis.
  • Lateral l'IIO'v'-Z,I".1iOf tin he? is provided by a cylinder and piston 88.
  • Accurate location of the punch and die sets beneath the striker axis is provided by adjustable stops 89 and 90.
  • Movement of the tool holder into a further extended tool changing position is provided by a third cylinder and piston 92 that reciprocates the pivot block 83 which holds the pivot pin for the guide block 82.
  • Extension of the piston rod of cylinder and piston 92 will move the guide block and tool holder longitudinally to clear the table 12 for tool changes.
  • Retraction of the pivot block 94 against an adjustable stop 98 will accurately position the pivot block and thus the tool holder for additional punch and die positioning by the cylinder and pistons 38 and 88.
  • FIGS. 1-8 and 910 The basic difference between the embodiments of FIGS. 1-8 and 910 is in the position of the work sheet clamps 18.
  • the clamps are on the side of the tool holder; whereas, in the latter embodiment, the clamps are in front of the tool holder. Since the smaller punch and die set of FIGS. 9 and 10 is spaced forward of the larger punch and die set, in the direction toward the clamps 18, minimum interference with the clamps is achieved in much the same manner as with the first embodiment. That is, in both embodiments, the edge of the larger punch and die set does not unduly restrict movement of the work sheet clamps when punching smaller holes since the smaller punch and die sets are offset in the direction of the clamps.
  • a punching apparatus of the type having a work sheet supporting table, work sheet clamps for holding a work sheet on the table, means for moving the work sheet clamps over the table, and a tool holder having an upper arm provided with a punch and a lower arm provided with a die and movable for positioning said punch and die beneath a striker, the improvement comprising: a second smaller punch and die spaced from said first punch and die on said upper and lower arms in the direction toward said work sheet clamps, and
  • said second punch and die being longitudinally offset from said first punch and die and laterally offset from said first punch and die in a direction toward said work sheet clamps, said tool holder moving means including guiding means for positioning said tool holder laterally so as to locate said laterally offset second punch and die accurately beneath said striker.
  • said tool holder moving means including primary moving means for moving the tool holder between a fully retracted position with the first punch and die beneath said striker to a partially extended position with the second punch and die beneath the striker, and
  • said primary moving means including adjustable stop means and spring means for holding the tool holder against said guiding means and said guiding means for said tool holder moving means being adjustable for accurately locating the punches and dies beneath said striker.
  • said upper arm having a forward portion provided with a peripheral edge closely adjacent said first and second dies and recessed inwardly around said second die to allow movement of the work sheet clamps close to said second die.
  • said upper arm having a forward portion provided with a peripheral edge closely adjacent said first and second dies and recessed inwardly around said second die to allow movement of the work sheet clamps close to said second die.

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)
  • Punching Or Piercing (AREA)
US47637574 1974-02-24 1974-06-05 Extendable arm punching apparatus Expired - Lifetime US3895550A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US47637574 US3895550A (en) 1974-02-24 1974-06-05 Extendable arm punching apparatus
JP2198375A JPS50135689A (nl) 1974-02-24 1975-02-24
JP12874679U JPS5630418Y2 (nl) 1974-02-24 1979-09-19

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44548774A 1974-02-24 1974-02-24
US47637574 US3895550A (en) 1974-02-24 1974-06-05 Extendable arm punching apparatus

Publications (1)

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US3895550A true US3895550A (en) 1975-07-22

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972260A (en) * 1974-12-26 1976-08-03 Amada Company Limited Multiple tool holding punching apparatus
FR2378581A1 (fr) * 1977-02-01 1978-08-25 Menci Santi Machine a poinconner et a grignoter
US4220062A (en) * 1977-08-25 1980-09-02 Trumpf Maschinen Ag Machine having a plurality of reciprocating working tools which may be selectively brought into operation
US4250785A (en) * 1979-06-02 1981-02-17 Yamazaky Iron Works Turret type punch press having a plurality of strikers
US4532843A (en) * 1982-11-02 1985-08-06 Amada Company, Limited Punch press
US4541318A (en) * 1983-08-17 1985-09-17 Voest-Alpine Aktiengesellschaft Press for forming sheet metal elements
DE3836288A1 (de) * 1988-10-25 1990-04-26 Manfred Wanzke Werkzeughalte- und -wechselvorrichtung
EP1270108A2 (en) * 2001-06-20 2003-01-02 Murata Kikai Kabushiki Kaisha Punch press
US20050086990A1 (en) * 2003-10-22 2005-04-28 Agency For Science Technology And Research Apparatus and method for forming curvature in sheet metal
US7066001B2 (en) * 2000-11-10 2006-06-27 Pivatic Oy Device for machining band-like or plate-like material
CN104841759A (zh) * 2015-05-07 2015-08-19 张广山 一种钢结构厂房钢板打孔机

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5847322U (ja) * 1981-09-29 1983-03-30 株式会社アマダ スライド式ホルダ−
JPS61210811A (ja) * 1985-03-15 1986-09-19 株式会社日立製作所 平型電線被覆剥き器
JP2000343494A (ja) * 1999-05-31 2000-12-12 Uht Corp 穿孔機ユニット

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US117593A (en) * 1871-08-01 Improvement in hand-stamps

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4716475U (nl) * 1971-03-22 1972-10-26

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US117593A (en) * 1871-08-01 Improvement in hand-stamps

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972260A (en) * 1974-12-26 1976-08-03 Amada Company Limited Multiple tool holding punching apparatus
FR2378581A1 (fr) * 1977-02-01 1978-08-25 Menci Santi Machine a poinconner et a grignoter
US4220062A (en) * 1977-08-25 1980-09-02 Trumpf Maschinen Ag Machine having a plurality of reciprocating working tools which may be selectively brought into operation
US4250785A (en) * 1979-06-02 1981-02-17 Yamazaky Iron Works Turret type punch press having a plurality of strikers
US4532843A (en) * 1982-11-02 1985-08-06 Amada Company, Limited Punch press
US4541318A (en) * 1983-08-17 1985-09-17 Voest-Alpine Aktiengesellschaft Press for forming sheet metal elements
DE3836288A1 (de) * 1988-10-25 1990-04-26 Manfred Wanzke Werkzeughalte- und -wechselvorrichtung
US7066001B2 (en) * 2000-11-10 2006-06-27 Pivatic Oy Device for machining band-like or plate-like material
EP1270108A2 (en) * 2001-06-20 2003-01-02 Murata Kikai Kabushiki Kaisha 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
US20050086990A1 (en) * 2003-10-22 2005-04-28 Agency For Science Technology And Research Apparatus and method for forming curvature in sheet metal
US7111487B2 (en) 2003-10-22 2006-09-26 Agency For Science, Technology And Research Apparatus and method for forming curvature in sheet metal
CN104841759A (zh) * 2015-05-07 2015-08-19 张广山 一种钢结构厂房钢板打孔机

Also Published As

Publication number Publication date
JPS5630418Y2 (nl) 1981-07-20
JPS50135689A (nl) 1975-10-28
JPS5543696U (nl) 1980-03-21

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