US3611850A - Manufacture of hexagonal slugs - Google Patents

Manufacture of hexagonal slugs Download PDF

Info

Publication number
US3611850A
US3611850A US843958A US3611850DA US3611850A US 3611850 A US3611850 A US 3611850A US 843958 A US843958 A US 843958A US 3611850D A US3611850D A US 3611850DA US 3611850 A US3611850 A US 3611850A
Authority
US
United States
Prior art keywords
strip
line
dies
sheet
die
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
US843958A
Other languages
English (en)
Inventor
James Reed Elliott
Eric Thomas Edward Turner
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.)
John Dale Foundries Ltd
Original Assignee
John Dale Foundries 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 John Dale Foundries Ltd filed Critical John Dale Foundries Ltd
Application granted granted Critical
Publication of US3611850A publication Critical patent/US3611850A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B21D28/06—Making more than one part out of the same blank; Scrapless working
    • 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
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0538—Repetitive transverse severing from leading edge of work
    • Y10T83/0543—Alternately forming products of less than total width of work
    • 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
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • Y10T83/0577—Repetitive blanking
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4531—Work feed increment shorter than longitudinal tool field
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4577—Work fed successively to plural tools
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/461—With abutment to position work being fed with respect to cutter
    • 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
    • Y10T83/727—With means to guide moving work
    • Y10T83/744—Plural guide elements
    • Y10T83/745—Opposed
    • 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
    • Y10T83/748—With work immobilizer
    • Y10T83/7587—Gapped work-constrainer

Definitions

  • the punches and dies in the second line are staggered midway between those in the first line, and the whole of the strip or sheet between the sidemost punches is out without waste into slugs.
  • Yielding support for the strip is preferably provided within the dies of the second line, preferably by making these dies retain one or more slugs within them.
  • This invention relates to the manufacture of hexagonal slugs from a strip or sheet of metal, for example aluminum. Such slugs may be required for producing cylindrical impact extrusions and have the advantage over circular slugs of reducing the amount of scrap.
  • a method of punching hexagonal slugs from a strip or sheet which'method comprises feeding the strip or sheet step by step successively through a first and a second line of hexagonal punches and dies, the punches and dies in the second line being staggered midway between those in the first line to cut the whole of the strip or sheet between the sidemost punches and dies without waste into hexagonal slugs, reciprocating the punches into and out of the dies in timed relationship with the step-by-step feeding movement of the strip, the punches in the second line being moved during such reciprocation to a forward limiting position in which the front face of each punch is substantially at that face of the die against which the strip or sheet is disposed, and yieldingly supporting the slug being produced in each die of the second line within such die during the punching of the slug.
  • apparatus for producing hexagonal slugs from a strip or sheet comprising a first and a second line of hexagonal dies, the dies in the second line being staggered midway between the dies in the first line, punches aligned with the respective dies, means for feeding the strip or sheet step by step across the first line of dies and then across the second line of dies, means for reciprocating the punches to punch the slugs from the strip or sheet, each punch in the second line having a front face which is moved by the reciprocating means into a rearward position and into a limiting forward position in which the front face of the punch is substantially at that end of the associated die nearer the strip or sheet, and means adapted to provide within each die of the second line a yielding support for the slug being produced in that die.
  • the support within each die may conveniently comprise one or more of the slugs cut by that die in the immediate preceding punching operations respectively, the upper surface of the uppennost of these slugs being initially level with the top of the die.
  • a sprung platform could be provided as an alternative, but the above arrangement is preferred.
  • the invention also extends to slugs when produced by a method or apparatus as set forth in the second and third paragraphs of this statement.
  • FIG. 1 is a sectional elevation of the apparatus
  • FIG. 2 is a plan of a die member and die holder viewed on line 2-2 of FIG. 1,
  • FIG. 3 is a sectional view of a punch of the apparatus, including a pilot, and
  • FIG. 4 is a sectional view of a die on the line 4-4 of FIG. 2.
  • the apparatus illustrated is intended to punch hexagonal slugs from a strip of aluminum sheet which is moved through the apparatus.
  • Each slug has a central hole, and the slugs are intended to be used for producing cylindrical impact extrusions.
  • the holes are first punched in the strip at the appropriate locations, and the hexagonal slugs are then punched out.
  • circular dies for the punching of the circular holes are secured in a dieholder 11 secured next to a die member 12 in a recess in a base member 9.
  • the base member 9 has sidepieces 8 secured thereon to form a guide channel along which the strip is fed.
  • An extension of the guide channel is shown at 7.
  • the die member 12 is split into three parts 12a, 12b and 12c in a direction at right angles to the direction of movement of the strip indicated by arrow A, and provides the hexagonal dies, of which there are five in this instance and which are arranged in first and second lines l3, 14 as shown in FIG.
  • the two dies 14a, 14b in the second line 14 being staggered midway between the dies-13a, 13b, 13c in the first line I3.'It will be seen that the spacing between the first and second lines of dies is such that when the strip is advanced in the directional the arrow A in steps equal to the distance between the flats of the hexagon, and punches disposed over the dies are operated at each step, the whole width of the strip between the two outermost dies will be cut without waste into hexagonal slugs.
  • Five hexagonal punches 15 arranged to cooperate with the respective hexagonal dies, five circular punches 16 to cooperate with the five circular dies are all mounted on an assembly 18 including a stout plate 18a which is secured to the lower end of a shaft 19 for vertical reciprocating movement.
  • the punches and locating rods extend through a stripper plate 20 which overlies the die member 12 and dieholder II and which in operation of the apparatus rests on top of the strip.
  • Pilot elements 17 are secured in the three hexagonal punches 15 of the first line 13 as shown in FIG. 3. These elements are solidly backed by bolts 18, but in a modified construction the elements 17 are backed by springs to enable them to retract into the punches.
  • the elements 17 engage for locating purposes in the holes punched in a previous punching stroke by the circular punches l6 aligned with these rodsin the direction of travel A.
  • Three fingerlike stops 2] are secured by screws 22 to the top and end faces of die member 12 and extend as shown in FIG. 2 up to the edge of the dies in the first line 13.
  • the stops flank opposite sides of the dies in the second line 14 and assist in guiding the end of the strip.
  • each of these dies has a depth and cross-sectional dimensions such as to retain the two slugs which were cut therein during the two preceding punching operations.
  • the punches of the second line reach a forward position substantially flush with the top faces of the dies and thus, the top surface of the uppermost of these two slugs is substantially level with the top edge of the die at the commencementof a punching operation and forms a yielding support which prevents the tilting of the slug during punching owing to the resistance to downward movement presented by the two slugs.
  • This prevention of tilting during the punching operation results in a more accurate slug, particularly in comparison with engagement in which the slugs in the second row are formed by a'simple guillotine type of operation.
  • each of the dies 14a, 14b in the second row 14 is parallel sided for a distance equal to about twice the thickness of the strip from its end adjacent the punch so that two slugs indicated in chain lines are always retained in each of these dies.
  • the die is divergent to free the slugs. In other cases, however, dependent on the dimensions of the slug and its proportions, the material from which it is made and other factors, it may be sufficient for the die to hold a single slug, the die being parallel sided along, said, the full height of this slug, or on the other hand it may be necessary for three or more slugs to be retained in each of these dies.
  • the circular punches 16 are removed from the assembly 18 and either the pilot elements 17 are removed from the hexagonal punches 15 or punches 15 are replaced by pilotless punches.
  • the pilot elements are mounted in the assembly 18 between the punches lfi'and the hexagonal punches 15 in the first row 13, and extend through the stripper plate 20 into corresponding dielike inserts in the insert member 11 so as to locate in holes punched at the previous stroke by the line of threepunches 16.
  • the stop arrangement may include, between the flngerlike stops 21, intermediate portions which fit snugly against the three flats forming the forward face of each of the parts of the strip underlying the punches of the second row M, so that the stop arrangement also locates the end part of the strip accurately in a transverse direction.
  • a method of punching hexagonal slugs from a strip or sheet which method comprises feeding the strip or sheet step by step successively through a first and a second line of hexagonal punches and dies, the punches and dies in the second line being staggered midway between those in the first line to cut the whole of the strip or sheet between the sidemost punches and dies without waste into hexagonal slugs, reciprocating the punches into and out of the dies in timed relationship with the step-by-step feeding movement of the strip, the punches in the second line being moved during such reciprocation to a forward position in which the front face of each punch is substantially at that end of the die against which the strip or sheet is disposed, and yieldingly supporting the slug being produced in each die of the second line within such die during the punching of the slug.
  • Apparatus for producing hexagonal slugs from a strip or sheet comprising a first and a second line of hexagonal dies, the dies in the second line being staggered midway between the dies in the first line, punches aligned with the respective dies, means for feeding the strip or sheet step by step across the first line of dies and then across the second line of dies, means for reciprocating the punches to punch the slugs from the strip or sheet, each punch in the second line having a front face which is moved by the reciprocating means into a rearward position and into a limiting forward position in which the front face of the punch is substantially at that end of the associated die nearer the strip or sheet, and means adapted to provide within each die of the second line a yielding support for a slug being produced in that die.
  • each die of the second line is adapted to retain one or more of the slugs respectively cut in the preceding operations of the punch associated with that die thereby to support yieldingly the next slug to be produced in the die.
  • each die of the second line is adapted to retain one or more of the slugs respectively cut in the preceding operations of the punch associated with that die thereby to support yieldingly the next slug to be produced in the die.
  • Apparatus as claimed in claim 2 further comprising punches arranged to punch holes in the strip or sheet, before it reaches the hexagonal punches, in such manner that each hexagonal strip has a central hole therethrough.
  • the hole-engaging means comprises a forwardly projecting element on the forward end of at least one of the hexagonal punches in the first row.
  • the guide means includes guide elements for engaging the lateral limits of the part of the strip or sheet disposed over each die in the second line.
  • stop means is provided which is adapted to receive snugly in abutment those surfaces of the parts of the strip or sheet disposed over the second line of dies which have a forwardly facing component relative to the direction of feed of the strip or sheet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
US843958A 1968-07-26 1969-07-23 Manufacture of hexagonal slugs Expired - Lifetime US3611850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB35925/68A GB1212275A (en) 1968-07-26 1968-07-26 Improvements in or relating to the manufacture of hexagonal slugs

Publications (1)

Publication Number Publication Date
US3611850A true US3611850A (en) 1971-10-12

Family

ID=10383067

Family Applications (1)

Application Number Title Priority Date Filing Date
US843958A Expired - Lifetime US3611850A (en) 1968-07-26 1969-07-23 Manufacture of hexagonal slugs

Country Status (7)

Country Link
US (1) US3611850A (de)
BE (1) BE736594A (de)
CH (1) CH491696A (de)
DE (1) DE1937818B2 (de)
FR (1) FR2013811A1 (de)
GB (1) GB1212275A (de)
NL (1) NL6911418A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004014620A1 (en) * 2003-03-18 2004-02-19 Pem Management, Inc. Cold-headed standoff
US20040164255A1 (en) * 2002-06-15 2004-08-26 Shilton Mark Golder Radioactive sources
US20060196330A1 (en) * 2003-11-26 2006-09-07 Pem Management, Inc. Method of forming a cold-headed standoff
US20070283795A1 (en) * 2006-06-09 2007-12-13 Greenleaf Richard J Punch plug arrangement
US20090044671A1 (en) * 2006-06-09 2009-02-19 Greenleaf Richard J Punch press shedder pin knockout arrangement
CN102862191A (zh) * 2012-09-27 2013-01-09 莆田市城厢区星华电子模具有限公司 冲切线路板用新型模具下模
CN103567289A (zh) * 2012-07-31 2014-02-12 苏州飞宇精密科技股份有限公司 一种改进的带网孔的冲压件模具
CN105436290A (zh) * 2014-10-08 2016-03-30 汉拿伟世通空调有限公司 一种冲孔加工装置及利用其的图案加工方法及其图案

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106493222B (zh) * 2016-11-15 2018-04-13 安徽江淮汽车集团股份有限公司 一种对拼排样的落料冲孔模具结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US444918A (en) * 1891-01-20 Delphia
FR472780A (fr) * 1914-05-28 1914-12-17 Alfred De Fries Presse pour la fabrication des écrous à froid
US2600834A (en) * 1947-12-24 1952-06-17 Olin Ind Inc Cutting sheet material into blanks
US2649125A (en) * 1948-12-11 1953-08-18 Illinois Tool Works Washer strip and method and apparatus for producing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US444918A (en) * 1891-01-20 Delphia
FR472780A (fr) * 1914-05-28 1914-12-17 Alfred De Fries Presse pour la fabrication des écrous à froid
US2600834A (en) * 1947-12-24 1952-06-17 Olin Ind Inc Cutting sheet material into blanks
US2649125A (en) * 1948-12-11 1953-08-18 Illinois Tool Works Washer strip and method and apparatus for producing same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6919575B2 (en) * 2002-06-15 2005-07-19 Aba Technology Plc Radioactive sources
US20040164255A1 (en) * 2002-06-15 2004-08-26 Shilton Mark Golder Radioactive sources
US20080302162A1 (en) * 2003-03-18 2008-12-11 Pem Management, Inc. Cold-headed standoff
US20070000114A1 (en) * 2003-03-18 2007-01-04 Pem Management, Inc. Cold-headed standoff
US7631532B2 (en) 2003-03-18 2009-12-15 Pem Management, Inc. Cold-headed standoff
US7421875B2 (en) 2003-03-18 2008-09-09 Pem Management, Inc. Cold-headed standoff
WO2004014620A1 (en) * 2003-03-18 2004-02-19 Pem Management, Inc. Cold-headed standoff
US20060196330A1 (en) * 2003-11-26 2006-09-07 Pem Management, Inc. Method of forming a cold-headed standoff
US7175533B2 (en) 2003-11-26 2007-02-13 Pem Management, Inc. Method of forming a cold-headed standoff
US20090044671A1 (en) * 2006-06-09 2009-02-19 Greenleaf Richard J Punch press shedder pin knockout arrangement
US20070283795A1 (en) * 2006-06-09 2007-12-13 Greenleaf Richard J Punch plug arrangement
CN103567289A (zh) * 2012-07-31 2014-02-12 苏州飞宇精密科技股份有限公司 一种改进的带网孔的冲压件模具
CN102862191A (zh) * 2012-09-27 2013-01-09 莆田市城厢区星华电子模具有限公司 冲切线路板用新型模具下模
CN105436290A (zh) * 2014-10-08 2016-03-30 汉拿伟世通空调有限公司 一种冲孔加工装置及利用其的图案加工方法及其图案
US20160101458A1 (en) * 2014-10-08 2016-04-14 Halla Visteon Climate Control Corp. Punching device for improving surface roughness, pattern processing method using same, and pattern thereof
CN105436290B (zh) * 2014-10-08 2018-11-20 汉拿伟世通空调有限公司 一种冲孔加工装置及利用其的图案加工方法及其图案

Also Published As

Publication number Publication date
NL6911418A (de) 1970-01-29
GB1212275A (en) 1970-11-11
CH491696A (fr) 1970-06-15
BE736594A (de) 1969-12-31
FR2013811A1 (de) 1970-04-10
DE1937818A1 (de) 1970-01-29
DE1937818B2 (de) 1972-06-08

Similar Documents

Publication Publication Date Title
US3611850A (en) Manufacture of hexagonal slugs
US2600834A (en) Cutting sheet material into blanks
US3880038A (en) Sandwich die set
US2886081A (en) Drill elements
US3580122A (en) Apparatus for making knockouts in electrical boxes formed of plastic material
US3785236A (en) Impact die and carbide insert therefor
US3691601A (en) Method of making hose clamps
US2828792A (en) Reticulating apparatus
US3913420A (en) Method and means for making file teeth
US1992962A (en) Method of producing scroll-edged metal blanks
US3570086A (en) Methods and machines for manufacture of expanded metal
US3468199A (en) Conversion of sheet material into smaller pieces
US4821615A (en) Slug retainer for the die assembly of a stamping and forming machine
GB1420469A (en) Method and apparatus for cutting metal
US1439393A (en) Method for cutting disks or blanks from untrimmed commercial sheets
US1650518A (en) Sheet metal
US3580040A (en) Process and tool for forming holes in profiled members with a predetermined spacing
US3171319A (en) Laminated die and method of forming thereof
US930349A (en) Slitting mechanism.
US3735653A (en) Method for making knock-outs in electrical boxes formed of plastic material
US2858884A (en) Blanking sheet material
US6675681B1 (en) Method of processing sheet-like workpieces in a strip-shaped manner
US2310525A (en) Sectional die
US1334102A (en) Double die for making l-punchings
US1383673A (en) Punching-machine