US3913374A - Apparatus for bevelling wire blanks - Google Patents

Apparatus for bevelling wire blanks Download PDF

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Publication number
US3913374A
US3913374A US39853473A US3913374A US 3913374 A US3913374 A US 3913374A US 39853473 A US39853473 A US 39853473A US 3913374 A US3913374 A US 3913374A
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US
United States
Prior art keywords
bevelling
tool
blank
axis
tools
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
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English (en)
Inventor
Paul Esser
Emil Mayer
Paul Rahn
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.)
Meyer Roth and Pastor Maschinenfabrik GmbH
Original Assignee
Meyer Roth and Pastor Maschinenfabrik GmbH
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 Meyer Roth and Pastor Maschinenfabrik GmbH filed Critical Meyer Roth and Pastor Maschinenfabrik GmbH
Priority to FR7428483A priority Critical patent/FR2241745A1/fr
Application granted granted Critical
Publication of US3913374A publication Critical patent/US3913374A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D23/00—Machines or devices for shearing or cutting profiled stock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F11/00—Cutting wire
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F5/00—Upsetting wire or pressing operations affecting the wire cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21L—MAKING METAL CHAINS
    • B21L3/00—Making chains or chain links by bending the chain links or link parts and subsequently welding or soldering the abutting ends
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/307—Combined with preliminary weakener or with nonbreaking cutter
    • Y10T225/321—Preliminary weakener
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/371—Movable breaking tool

Definitions

  • ABSTRACT For providing an improved deformability of wire blanks (such as chain link blanks) during noncutting shaping, there is performed a bevelling step on the wire blank simultaneously from two opposite sides in the same blank zone, while leaving unaffected a flat cross-sectional portion adjacent the blank axis. This bevelling step is subsequently repeated at least once in the same zone in a direction set off not more than 90 with respect to the bevelling direction of the first bevelling step.
  • This invention relates to apparatus for bevelling continuously fed wire blanks, particularly chain link blanks.
  • each bevelled blank end has two bevelled surfaces arranged symmetrically to one another in a V-shape. These surfaces form identical angles with the axis of the blank and converge in a crest that intersects the blank axis.
  • an apparatus for performing this method Such apparatus, as disclosed, for example, in -U.S. Pat. No. 1,994,794, comprises two cooperating V-shaped cutters which are advanced simultaneously and from opposite directions towards the blank.
  • bevelling the blank ends in the above manner is to ensure that during the welding together of the blank ends bent into a C-shape to form a chain link, the fusion proceeds from the adjoining, lengthwise contacting, cutter-shaped crests in an outward direction.
  • impurities which may be formed by scaling, oxidation or the like during the welding process, are displaced outwardly into the weld during the welding operation and particularly during forging. Subsequently, the impurities are ground or filed away with the weld burr.
  • a bevelling is first ef fected in a known manner simultaneously from two opposite sides in the same zone of the blank substantially perpendicularly to the blank axis, while maintaining unaffected a flat cross-sectional portion adjacent the blank axis, and subsequently, substantially in the plane of the same cross section, the same bevelling process is repeated at least once, in a direction shifted not more than in the circumferential direction of the blank with respect to the direction of the preceding bevelling step.
  • the invention is based on the discovery that when working with the earlier discussed know apparatus which has two bevelling tools advanced from opposite directions perpendicularly to the blank axis, the material flows at the locus of working in a particular manner, as explained later in the specification.
  • FIG. I is a side elevational view of a wire blank, such as a chain blank, taken in the direction of advance of one of the bevelling tools and showing the locus of working.
  • FIG. 2 is a sectional view taken along line Il-II of FIG. 1.
  • FIG. 3 is a top plan view of the blank shown in FIG. 1, with both bevelling tools visible.
  • FIG. 4 is a perspective schematic view of a preferred embodiment of the invention.
  • FIG. 5 is a schematic side elevational view of another preferred embodiment of the invention.
  • FIG. 6 is a schematic side elevational view of still another preferred embodiment of the invention.
  • FIGS. 1, 2 and 3 there are shown bevelling tools 10 which, as they are advanced towards the longitudinal axis of the blank 11 through positions a-bc-d-e, cause material particles of the planes f, g, h, i, j, k of the blank 11 to be compressed in succession.
  • bevelling tools 10 which, as they are advanced towards the longitudinal axis of the blank 11 through positions a-bc-d-e, cause material particles of the planes f, g, h, i, j, k of the blank 11 to be compressed in succession.
  • the volume constant and the reaction of the volume elements of the planes f-k With respect to one another, the material flows in the axial direction from the middle of the blank cross section.
  • the cross sections l-m-n-o-p tend to move away from one another.
  • the invention utilizes this phenomenon by providing a second bevelling step during which the be velling tools engage the blank in the zones of these constrictions.
  • the bevelling tools As the bevelling tools are advanced in the course of this second bevelling step, they first eliminate the tensional stress present and subsequently generate a compression stress with axial displacement of material. In this manner there are achieved an additional flow-readiness of the material and an expansion of the bevelling process for a greater cross section and/or a greater strength.
  • the process according to the invention is particularly adapated for the bevelling of wire blanks made of high carboncontaining and high-alloyed materials which, because of their hardness and brittleness, make noncutting metal shaping particularly difficult.
  • the process according to the invention may undergo several modifications.
  • the method according to the inven tion may be so modified that instead of providing two knife pairs which in succession work on the stationary blank at the same location, the knife pairs are arranged spaced from one another along the length of the blank and operate simultaneously. It is true that in this manner the structural length of the apparatus is increased but at the same time the operating time is substantially decreased and also, the structure of the apparatus is simplified.
  • Such a device for performing the method according to the invention is illustrated schematically in FIG. 4 and will now be described in detail.
  • the blank 11 is advanced intermittently in the direction of arrow I3.
  • the first bevelling step is performed thereon by the first bevelling tools 10
  • the second bevelling step is performed thereon by the second bevelling tools spaced from the first bevelling tools 10 along the blank axis at a distance 14 which corresponds to the length of one blank.
  • the tool pair 10' which works in the cross-sectional plane 16 perpendic ularly to the blank axis [5 is set off by 90 with respect to the tool pair 10. Since each tool, as shown in FIG.
  • a leading edge face 17 and two lateral faces 18 arranged symmetrically to one another in a V-shape there is eventually obtained a bevel 19 having a quadratic frustopyramidal surface 20, four frustoconical surfaces 21 and a circular base surface 22. Since the bevelling operation according to the invention may be effected in such a manner that the leading blank ll snaps off as a result of the second bevelling step, the frustopyramidal surface is not always completely smooth, but has an uneven character and may even have a slightly prismatic form. Such a phenomenon is not necessarily disadvantageous for initiating the fusion process from the inside outwardly. Nevertheless, it is possible without difficulty to design the edge face 17 at each tool to be more or less wide or to so design the cutting tool that the lateral faces 18 converge into a cutting edge.
  • FIG. 5 there is shown a particular design ofthe tools according to the invention, concerning in particular the support of the bevelling tools.
  • Each bevelling tool 10" is supported in a tool carrier 23 which forms part of a tool holder 24 and which is pivotal about an axis 25 in the direction of the arrow 26.
  • the advance of the tool holder 24 is effected exclusively in the direction of the arrow 27 while the blank 11' is held stationary.
  • the displacement of the material in the blank occurs, during the noncutting shaping, advantageously in the direction of the arrow 28 in which the blank 11" should have a freedom of motion. In this manner it is possible to avoid radial material shifts.
  • the resetting ofthe bevelling tools 10" is effected by a reset spring 29 so that in the withdrawn position of the tool support 24 the bevelling tools 10" abut a stop face 30 forming part of the work tool holder 24.
  • FIG. 6 Another embodiment of the invention is schematically illustrated in FIG. 6.
  • the bevelling tools 10" can be advanced exclusively in the direction of the arrow 27.
  • the bevelling tools 10 have a lateral surface 18' which extends perpendicularly to the blank axis and a lateral face 18" which forms an angle with the surface 18'.
  • the material of the blank flows exclusively in the direction of the arrow 27 and radial material shifts in the direction of arrow 28 are avoided if the blank 11 is held stationary and a freedom of motion is ensured for the blank 11".
  • An apparatus for bevelling a wire blank simultaneously at diametrically opposite sides from successively different directions comprising at least two pairs of bevelling tools; the bevelling tools of each pair being arranged to move simultaneously and in opposite directions to one another into engagement with said wire blank; the direction of advance of each tool towards said blank being normal to the longitudinal axis of the blank; cutting faces provided on each tool, said cutting faces being arranged symmetrically with respect to any cross-sectional plane of said blank; a separate tool holder associated with each bevelling tool for carrying the same, each tool holder being movable towards and away from said axis in a direction normal thereto; means for pivotally securing each bevelling tool to its associated holder for a pivotal motion of the bevelling tool about an axis that is normal to and spaced from the axis of said blank; an abutment provided on each tool holder and cooperating with the tool to determine therefor a position of rest; and spring means engaging each tool holder and the associated tool for urging the tool against said
  • An apparatus for bevelling a wire blank simultaneous at diametrically opposite sides from successively different directions comprising at least two pairs of bevelling tools: the bevelling tools of each pair being arranged to move simultaneously and in opposite direc tions to one another into engagement with said wire tool to its associated holder for a pivotal motion of the bevelling tool about an axis that is normal to and spaced from the axis of said blank; an abutment provided on each tool holder and cooperating with the tool to determine therefor a position of rest; and spring means engaging each tool holder and the associated tool for urging the tool against said abutment.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wire Processing (AREA)
  • Shearing Machines (AREA)
US39853473 1972-09-18 1973-09-18 Apparatus for bevelling wire blanks Expired - Lifetime US3913374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7428483A FR2241745A1 (en) 1973-09-18 1974-08-19 Wind-resistant burner for cigarette lighter - has convergent-divergent mixing nozzle and mixing blade disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2245771A DE2245771C2 (de) 1972-09-18 1972-09-18 Vorrichtung zum Herstellen von Drahtabschnitten mit angekuppten Enden an einem Draht größerer Länge

Publications (1)

Publication Number Publication Date
US3913374A true US3913374A (en) 1975-10-21

Family

ID=5856667

Family Applications (1)

Application Number Title Priority Date Filing Date
US39853473 Expired - Lifetime US3913374A (en) 1972-09-18 1973-09-18 Apparatus for bevelling wire blanks

Country Status (7)

Country Link
US (1) US3913374A (ja)
JP (1) JPS4993260A (ja)
DE (1) DE2245771C2 (ja)
FR (1) FR2200068B1 (ja)
GB (1) GB1454083A (ja)
IT (1) IT994268B (ja)
SE (1) SE395839B (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147884A (en) * 1981-03-06 1982-09-11 Fujitsu Ltd Method of machining contact pin
US4522039A (en) * 1983-10-28 1985-06-11 Mcneill John L Ice cube machine cube cutters
US4622832A (en) * 1984-01-10 1986-11-18 Turbo Refrigerating Company Ice making machine
US4651537A (en) * 1984-01-10 1987-03-24 Turbo Refrigerating Company Ice making machine
US4682467A (en) * 1985-02-13 1987-07-28 Cooper Industries, Inc. Chain forming method and apparatus
US4910954A (en) * 1984-12-21 1990-03-27 Valtiero Tizzi Apparatus for the formation of ornamental chains
US5201117A (en) * 1991-11-04 1993-04-13 General Motors Corporation Method and apparatus for sizing and cutting tubing
US20130180310A1 (en) * 2011-07-29 2013-07-18 Aktiebolaget Skf Equipment for forming a frontal toothing, in particular on an inner ring of a wheel hub
US20230080602A1 (en) * 2020-01-23 2023-03-16 Wafios Aktiengesellschaft Method and wire processing machine that produces prepared shaped parts

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4223478A1 (de) * 1992-07-16 1994-01-20 Siemens Matsushita Components Verfahren zum Herstellen eines Abreißdrahtes für Überdruckabreißsicherungen in elektrischen Kondensatoren
DE19614652B4 (de) * 1996-04-13 2004-11-25 Hohner Maschinenbau Gmbh Schneidkasten für einen Heftkopf
ITUA20163074A1 (it) * 2016-05-02 2017-11-02 Am Teknostampi S P A Supporto per bobine di cavi, fili per saldatura o simili
DE102018114579B3 (de) 2018-06-18 2019-10-10 copperING S.r.l. Verfahren und Vorrichtung zum gratfreien Abtrennen eines Drahtes sowie ein entsprechend abgetrenntes Drahtstück und Hairpin

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1138211A (en) * 1914-06-11 1915-05-04 David T Graham Process of forming pointed blanks for belt-hooks from a metallic strand.
US1990571A (en) * 1933-07-24 1935-02-12 Frank E Stahl Shearing device for chain link forming machines
US1994794A (en) * 1933-08-11 1935-03-19 Columbus Mckinnon Chain Corp Apparatus for forming chain link blanks
US2025557A (en) * 1934-09-01 1935-12-24 Columbus Mckinnon Chain Corp Chain link blank
US2771735A (en) * 1953-10-28 1956-11-27 Columbus Mckinnon Chain Corp Method of welding the ends of a chain link wherein initial point contact is obtained between the ends
US3114276A (en) * 1956-07-31 1963-12-17 Kocks Gmbh Friedrich Device for drawing billet and bar stock
US3626746A (en) * 1969-02-25 1971-12-14 Fives Lille Cail Work reducing and shaping apparatus
US3714776A (en) * 1970-06-09 1973-02-06 Wafios Maschinen Wagner Apparatus for producing chain links

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2106274A (en) * 1933-12-22 1938-01-25 Lamson & Sessions Co Apparatus for cutting bar stock
DE1602632B2 (de) * 1967-10-31 1972-01-05 Meyer, Roth & Pastor, 5000 Köln Vorrichtung zum abschneiden von drahtstuecken unter gleich zeitigem anspitzen
US3461715A (en) * 1968-08-01 1969-08-19 Lebow Associates Inc Compressive force measuring device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1138211A (en) * 1914-06-11 1915-05-04 David T Graham Process of forming pointed blanks for belt-hooks from a metallic strand.
US1990571A (en) * 1933-07-24 1935-02-12 Frank E Stahl Shearing device for chain link forming machines
US1994794A (en) * 1933-08-11 1935-03-19 Columbus Mckinnon Chain Corp Apparatus for forming chain link blanks
US2025557A (en) * 1934-09-01 1935-12-24 Columbus Mckinnon Chain Corp Chain link blank
US2771735A (en) * 1953-10-28 1956-11-27 Columbus Mckinnon Chain Corp Method of welding the ends of a chain link wherein initial point contact is obtained between the ends
US3114276A (en) * 1956-07-31 1963-12-17 Kocks Gmbh Friedrich Device for drawing billet and bar stock
US3626746A (en) * 1969-02-25 1971-12-14 Fives Lille Cail Work reducing and shaping apparatus
US3714776A (en) * 1970-06-09 1973-02-06 Wafios Maschinen Wagner Apparatus for producing chain links

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57147884A (en) * 1981-03-06 1982-09-11 Fujitsu Ltd Method of machining contact pin
JPS6038839B2 (ja) * 1981-03-06 1985-09-03 富士通株式会社 接触ピン加工方法
US4522039A (en) * 1983-10-28 1985-06-11 Mcneill John L Ice cube machine cube cutters
US4622832A (en) * 1984-01-10 1986-11-18 Turbo Refrigerating Company Ice making machine
US4651537A (en) * 1984-01-10 1987-03-24 Turbo Refrigerating Company Ice making machine
US4910954A (en) * 1984-12-21 1990-03-27 Valtiero Tizzi Apparatus for the formation of ornamental chains
US4682467A (en) * 1985-02-13 1987-07-28 Cooper Industries, Inc. Chain forming method and apparatus
US5201117A (en) * 1991-11-04 1993-04-13 General Motors Corporation Method and apparatus for sizing and cutting tubing
US20130180310A1 (en) * 2011-07-29 2013-07-18 Aktiebolaget Skf Equipment for forming a frontal toothing, in particular on an inner ring of a wheel hub
US9149855B2 (en) * 2011-07-29 2015-10-06 Aktiebolaget Skf Equipment for forming a frontal toothing, in particular on an inner ring of a wheel hub
US20230080602A1 (en) * 2020-01-23 2023-03-16 Wafios Aktiengesellschaft Method and wire processing machine that produces prepared shaped parts

Also Published As

Publication number Publication date
IT994268B (it) 1975-10-20
JPS4993260A (ja) 1974-09-05
DE2245771C2 (de) 1983-12-15
SE395839B (sv) 1977-08-29
DE2245771A1 (de) 1974-03-28
FR2200068B1 (ja) 1978-03-10
FR2200068A1 (ja) 1974-04-19
GB1454083A (en) 1976-10-27

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