US3835740A - Method and apparatus for cutting into sections the castings produced by a continuous rotary casting machine - Google Patents

Method and apparatus for cutting into sections the castings produced by a continuous rotary casting machine Download PDF

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Publication number
US3835740A
US3835740A US00222080A US22208072A US3835740A US 3835740 A US3835740 A US 3835740A US 00222080 A US00222080 A US 00222080A US 22208072 A US22208072 A US 22208072A US 3835740 A US3835740 A US 3835740A
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United States
Prior art keywords
casting
saw
cutting
rotating
cut
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Expired - Lifetime
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US00222080A
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English (en)
Inventor
P Peytavin
L Babel
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ETUDES DE CENTRIFUGATION
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ETUDES DE CENTRIFUGATION
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    • 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
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/18—Machines with circular saw blades for sawing stock while the latter is travelling otherwise than in the direction of the cut
    • B23D45/24—Flying sawing machines with lever-supported saw carrier which oscillates in an arc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/14—Plants for continuous casting
    • B22D11/144—Plants for continuous casting with a rotating mould
    • 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
    • Y10T82/00—Turning
    • Y10T82/16—Severing or cut-off
    • Y10T82/16016—Processes
    • 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
    • Y10T82/00—Turning
    • Y10T82/16—Severing or cut-off
    • Y10T82/16131—Flying cutter type

Definitions

  • the invention is intended to provide a process of cutting continuously rotating castings into sections which makes it possible to cut the castings at a high speed while producing smooth ends without consuming large amounts of power.
  • the invention is particularly useful in the case of the continuous rotary vertical casting of steel castings of high quality since it permits rapid cutting of the .casting, which is important in view of the relatively high extraction speed, and makes-it possible to produce-sections which are directly usable, for example, in manufacturing tubes of high quality.
  • the temperature of the casting during cutting in the case of steel, is preferably between 900 and l,l00 C. This temperature naturally varies between the outside and the inside of the casting.
  • the saw is rapidly cooled so that the saw cools the surface of the section of the casting during the cutting and thus prevents deformation of the metal. It is consequently'possible to carry out the cutting at higher temperatures than in the prior art, which still further increases the rapidity of cutting.
  • the casting is held firmly upstream of the saw mounting so as to prevent any axial displacement with respect to the saw, the rotary and translational movement of the casting being of course produced in the customary manner.
  • the movable means preferably consists of an arm or lever .mounted to pivot aboutan axisparallel to the axis of extraction of. the casting and biased in the direction of the axis of said casting by suitable means, such as a pivotally mounted hydraulic cylinder.
  • this movable means may also consist of a slide mounted for translational movement transverse to the direction of the axis of the casting.
  • the framework supporting the movablemeans is attached to the non-rotating part of a vise having rotating jaws which grip the casting ata short distance upstream of the saw in order to ensure synchronous movement of said frame with the casting in the direction of extraction of thecasting.
  • Suitable means,-preferably hydraulic, are provided to returnthis frame, as well as the vise, in the opposite direction, once a cut has been completed andthe jaws of the vise have been released.
  • the vise which is attached to the frame which supports the saw may advantageously have two opposed jaws, the movement of which toward the casting is symmetrically produced by a device comprising, for example, two toothed sectors, one of which is in engagement with the other, and both of which are connected to means such as parallelogram linkage which transmits the rotary motion of these toothed sectors to said jaws to move them toward or away from the axis of the casting.
  • a device comprising, for example, two toothed sectors, one of which is in engagement with the other, and both of which are connected to means such as parallelogram linkage which transmits the rotary motion of these toothed sectors to said jaws to move them toward or away from the axis of the casting.
  • These jaws, as well as the means for moving them are supported by a rotary member turning in the relatively stationary part of the vise.
  • the stationary part of the vise, and consequently the frame of the saw are returned in the opposite direction to that of extraction by means of hydraulic cylinders.
  • FIG. 1 is a top plan view of a sawing device according to the invention, with the vise omitted;
  • FIG. 2 is-a cross-sectional view taken along the line ll-Il OF FIG. 1;
  • FIG. 3 is a cross-sectional view taken along the line Ill-III of FIG. 1;
  • FIG. 4 is a top plan view of the vise which is associated with the apparatus of FIG. 1;
  • FIG. 5 is an axial sectional view taken through the vise of FIG. 4.
  • FIGS. 1 and 2 show a solid round vertical steel casting 1 produced by a rotating vertical continuous casting mold and extracted from this mold by extracting rollers not shown.
  • the vertical casting 1 is thus translated downwardly in the direction of the arrow F and rotated about its vertical axis in the direction of the arrow g.
  • Beneath the extracting rollers, not shown, the casting 1 is gripped by a rotating vise, which will be described in detail in connection with FIGS. 4 and 5, and which is located in a cylindrical casing 2, the lower wall 3 of which is supported, for example, by flaps 4 pivotally mounted on a plate 5 which is substantially horizontally mounted on the frame 6.
  • This frame supports two vertical hydraulic cylinders 7, the piston rods of which project from the top of these cylinders and are attached to the stationary structure of the continuous casting'machine.
  • the frame 6 is vertically displaceable in the direction of the arrow F to follow the casting downward during the sawing operation and then rise again in the opposite direction, after the cut has been completed, to the level of a new part of the casting to be cut.
  • the frame 6 is mounted on a movable arm or lever 8 adapted to swing in a horizontal plane.
  • the lever 8 is, for example, fixed to a post 9 which is mounted on arms 10 to swing about a vertical shaft 11 which is itself supported by suitable brackets on a vertical member 12 mounted on the frame 6.
  • the movable lever 8 may thus pivot about the shaft ll.
  • the pivotal movement of the movable lever 8 in the direction of the arrow h which causes it to approach the axis of the casting l, and in the opposite direction, is produced by a double-acting hydraulic cylinder 13 pivotally attached at 15 by an arm 14 to the frame 6.
  • the free end 16 of the rod of the cylinder 13 is pivotally attached to the lever 8.
  • the lever 8 supports an electric motor 17 the upper end of the vertical drive shaft of which supports, through suitable mounting means 18, a circular saw 19, which consequently rotates in a horizontal plane.
  • the direction of rotation of the circular saw is indicated by the arrow 1'.
  • the lever 8 also preferably supports a protective casting 20 positioned around the saw 19 and comprising a gutter 21 for the evacuation of the scraps produced during sawing.
  • the device also comprises, supported on the plate 3, a sleeve 22 through which the casting 1 passes, and having at the level of the circular saw 19 a semi-circular slot 23.
  • the apparatus operates as follows:
  • Saw 19 comes into contact with the outer wall of the casting 1 with which it is translated in the direction of the arrow F, and begins to cut the casting. Since the casting is rotating in a direction opposite to the one in which the saw rotates, the saw makes a circular cut in it. It will be readily appreciated that only a few teeth on the saw 19 are simultaneously in engagement with the casting at the bottom of this cut. In this way the casting may be sawed rapidly without any need for imparting a very large rotative force from the motor 17 to the saw 19. Moreover, as a consequence of the process according to the invention, the saw is very rapidly cooled because only a few teeth at most simultaneously engage the casting. If necessary the cooling of the saw may be accelerated by suitable jets of water.
  • a casting such as 1, made of steel, about mm in diameter, having a temperature be tween 900 and 1,080 C, may be cut rapidly by a saw 660 mm in diameter rotating at 3,000 rpm driven by a motor 17 of 20 horsepower.
  • the force exerted by the hydraulic cylinder 13 is from 200 to 300 kg.
  • the cutting time is about l5 seconds, which is substantially less than the cutting time for a casting of the same size which is not being rotated,
  • the cutting process according to the invention has the additional advantage that the section of the casting which is being cut off is always attached to the upper part of the casting at the level of the slot 23 by a sub- 5. stantially circular section which is coaxial with the casting which has not been cut off. In this way, the section being cut off by the saw has very little tendency to swing away from the axis of the remainder of the casting, which is particularly advantageous at high speeds of rotation. Moreover, the saw 19 advances in the circular cut in the casting without being pinched between the upper and lower'edges of the cut. It is, however, possible, in addition, to utilize a suitable abutment 24 to exert a force in the direction of the arrow j on the section of the casting being cut in order to hold the part of the cut in which the saw is engaged open.
  • the upper wall 25 of the casing 2 supports a vertical sleeve 26 in which a roller bearing 27 is mounted.
  • This bearing rotatably supports a rotating member 28 comprising a flange projecting from an elongated internal sleeve 29, through which the casting 1 passes.
  • a rotating member 28 comprising a flange projecting from an elongated internal sleeve 29, through which the casting 1 passes.
  • radial holes 30 communicating with vertical ducts 31.
  • the holes 30 are positioned at the level of a circular groove 32 in the internal wall of the sleeve 26, which groove is connected to an opening 33.
  • Sealing members 34 are provided between the stationary sleeve 26 and the rotary member 28 to provide a seal at the level of the circular groove 32.
  • a pressure fluid supplied through the hole 33 This pressure fluid, for example compressed air, is distributed by the ducts 31 to ducts (not shown) in the movable means supported by the lower horizontal flange of the rotating member 28.
  • the member 28 is preferably rotated by a motor not shown through a ring gear 35 carried on the periphery of the horizontal flange of the member 28.
  • the rotatable member 28 supports movable means comprising two jaws 36 positioned symmetrically with respect to the vertical axis of the casting 1.
  • Each of these jaws 36 is pivotally attached by levers 37, 38, respectively, to pivot means 37a, 38a, carried by vertical tabs welded to the lower surface of the horizontal flange of the member 28.
  • the jaws 36 are pivotally attached to the levers 37 and 38 by pivot means 37b, 38b, so that these jaws 36 are capable of being brought together or separated from the axis of the casting 1 while kept constantly horizontal by a parallelogram linkage, the arms 37a, 37b, and 38a, 38b being equal in length.
  • the levers 38 engage each other through toothed sectors 39.
  • the gripping and release movements of the jaws may advantageously be produced by two hydraulic jacks 40, which are mounted head to foot.
  • the cylinder of each jack is attached at 41 to one of two pins 42 passing through the jaws 36, and the end 43 of its piston rod is pivotally attached to the other pin 42. It will be seen that, in this manner, by actuating the hydraulic cylinders 40, the jaws 36 may be either brought together or separated, with symmetrical movement thereof assured by the toothed sectors 39.
  • the internal sleeve 29 extends to the bottom of the casing 2 so that it is gripped at four points, as may be seen on F IG. 4, so as to permit the introduction of the heads of the jaws 36 which grip the casting.
  • Method of cutting a solid rotating steel casting being extracted at high temperature from a rotating mould into sections by using a rotating saw comprises the step of gripping said casting upstream of the position of said saw by means which prevents any axial displacement of said casting with respect to said saw while translating said saw in the direction in which said casting is being extracted, and the step of urging said rotating saw toward the center of edges of the cut being made by said saw in said casting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sawing (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
US00222080A 1971-02-05 1972-01-31 Method and apparatus for cutting into sections the castings produced by a continuous rotary casting machine Expired - Lifetime US3835740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7103953A FR2124103B1 (de) 1971-02-05 1971-02-05

Publications (1)

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US3835740A true US3835740A (en) 1974-09-17

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US00222080A Expired - Lifetime US3835740A (en) 1971-02-05 1972-01-31 Method and apparatus for cutting into sections the castings produced by a continuous rotary casting machine

Country Status (6)

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US (1) US3835740A (de)
JP (1) JPS571365B1 (de)
DE (1) DE2205129C3 (de)
FR (1) FR2124103B1 (de)
GB (1) GB1377856A (de)
IT (1) IT951757B (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901611A (en) * 1989-03-30 1990-02-20 Bentley Richard J Apparatus and method for cutting mults from billets
EP0467875A2 (de) * 1990-07-18 1992-01-22 WEINGARTNER MASCHINENBAU GESELLSCHAFT m.b.H. Vorrichtung zum Durchtrennen heisser Werkstücke
US20050126741A1 (en) * 2003-12-11 2005-06-16 Bowles Wade L. Apparatus and method for horizontal casting and cutting of metal billets
US20100013394A1 (en) * 2004-12-07 2010-01-21 Mag Instrument, Inc. Ciruitry for portable lighting devices and portable rechargeable electronic devices
US20190041289A1 (en) * 2017-08-04 2019-02-07 Schenck Rotec Gmbh Drive apparatus for a balancing machine and a balancing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500770A1 (fr) * 1981-03-02 1982-09-03 Fives Cail Babcock Dispositif de tronconnage pour installation de coulee continue verticale
CN104117647B (zh) * 2014-07-10 2016-02-03 中国重型机械研究院股份公司 一种镁合金圆坯连铸在线切割机

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2350975A (en) * 1941-03-28 1944-06-06 Aetna Standard Eng Co Cutoff apparatus
US2752648A (en) * 1951-04-05 1956-07-03 Ile D Etudes De Centrifugation Apparatus for the production of tubular metallic objects
US2772733A (en) * 1955-11-30 1956-12-04 Modern Plastic Machinery Corp Pipe-cutting apparatus
US2994923A (en) * 1961-08-08 Method for cutting pipe while
US3143776A (en) * 1960-10-06 1964-08-11 Continuous Casting Company Ltd Continuous casting
US3157079A (en) * 1961-11-24 1964-11-17 Harper Laffie Pipe cut-off machine
US3216300A (en) * 1962-06-24 1965-11-09 Const Mecaniques Et Aeronautiq Work driven flying cut-off machine
US3257881A (en) * 1963-01-03 1966-06-28 Pacific Roller Die Co Inc Pipe cutting and handling method
US3310855A (en) * 1966-02-21 1967-03-28 Orioli Alessandro Apparatus for operating on continuously moving material with means to relate the speed of the tool carriage to that of the material
US3453912A (en) * 1967-05-29 1969-07-08 Watkins Mfg Co Method of cutting off pieces from the end of bar stock
US3487876A (en) * 1967-12-18 1970-01-06 Robert Bucci Apparatus for casting metal tubing by continuous process
US3612148A (en) * 1969-07-02 1971-10-12 United States Steel Corp Method and apparatus for removing aborted castings from a continuous-casting machine
US3766963A (en) * 1971-04-23 1973-10-23 Innocenti Santeustacchio Spa Continuous casting methods and apparatus

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Publication number Priority date Publication date Assignee Title
US1444953A (en) * 1923-02-13 Peocess and apparatus foe making seamless tubing
FR1169876A (fr) * 1956-03-27 1959-01-07 Metallurg D Esperance Longdoz Procédé et dispositif pour la coulée des métaux par voie centrifuge et continue
FR1493966A (fr) * 1966-09-20 1967-09-01 United States Steel Corp Appareil servant à tronçonner des brames
SU461791A1 (ru) * 1968-06-17 1975-02-28 Балхашский Ордена Ленина Горнометаллургический Комбинат Им.50-Летия Октябрьской Революции Устройство дл разрезки слитков в многоручьевых установках непрерывной разливки

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994923A (en) * 1961-08-08 Method for cutting pipe while
US2350975A (en) * 1941-03-28 1944-06-06 Aetna Standard Eng Co Cutoff apparatus
US2752648A (en) * 1951-04-05 1956-07-03 Ile D Etudes De Centrifugation Apparatus for the production of tubular metallic objects
US2772733A (en) * 1955-11-30 1956-12-04 Modern Plastic Machinery Corp Pipe-cutting apparatus
US3143776A (en) * 1960-10-06 1964-08-11 Continuous Casting Company Ltd Continuous casting
US3157079A (en) * 1961-11-24 1964-11-17 Harper Laffie Pipe cut-off machine
US3216300A (en) * 1962-06-24 1965-11-09 Const Mecaniques Et Aeronautiq Work driven flying cut-off machine
US3257881A (en) * 1963-01-03 1966-06-28 Pacific Roller Die Co Inc Pipe cutting and handling method
US3310855A (en) * 1966-02-21 1967-03-28 Orioli Alessandro Apparatus for operating on continuously moving material with means to relate the speed of the tool carriage to that of the material
US3453912A (en) * 1967-05-29 1969-07-08 Watkins Mfg Co Method of cutting off pieces from the end of bar stock
US3487876A (en) * 1967-12-18 1970-01-06 Robert Bucci Apparatus for casting metal tubing by continuous process
US3612148A (en) * 1969-07-02 1971-10-12 United States Steel Corp Method and apparatus for removing aborted castings from a continuous-casting machine
US3766963A (en) * 1971-04-23 1973-10-23 Innocenti Santeustacchio Spa Continuous casting methods and apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901611A (en) * 1989-03-30 1990-02-20 Bentley Richard J Apparatus and method for cutting mults from billets
WO1991008076A1 (en) * 1989-03-30 1991-06-13 D.B. Development, Inc. Apparatus and method for cutting mults from billets
EP0467875A2 (de) * 1990-07-18 1992-01-22 WEINGARTNER MASCHINENBAU GESELLSCHAFT m.b.H. Vorrichtung zum Durchtrennen heisser Werkstücke
EP0467875A3 (en) * 1990-07-18 1992-07-29 Weingartner Maschinenbau Gesellschaft M.B.H. Device for cutting-off warm pieces
US20050126741A1 (en) * 2003-12-11 2005-06-16 Bowles Wade L. Apparatus and method for horizontal casting and cutting of metal billets
US7028750B2 (en) 2003-12-11 2006-04-18 Novelis, Inc. Apparatus and method for horizontal casting and cutting of metal billets
EP2286940A2 (de) 2003-12-11 2011-02-23 Novelis Inc. Vorrichtung und Verfahren zum waagerechten Giessen und Schneiden von Metallknüppeln
EP2286940A3 (de) * 2003-12-11 2011-07-20 Novelis Inc. Vorrichtung und Verfahren zum waagerechten Giessen und Schneiden von Metallknüppeln
US20100013394A1 (en) * 2004-12-07 2010-01-21 Mag Instrument, Inc. Ciruitry for portable lighting devices and portable rechargeable electronic devices
US20190041289A1 (en) * 2017-08-04 2019-02-07 Schenck Rotec Gmbh Drive apparatus for a balancing machine and a balancing machine
US11169043B2 (en) * 2017-08-04 2021-11-09 Schenck Rotec Gmbh Drive apparatus for a balancing machine and a balancing machine

Also Published As

Publication number Publication date
DE2205129B2 (de) 1975-01-23
IT951757B (it) 1973-07-10
FR2124103A1 (de) 1972-09-22
GB1377856A (en) 1974-12-18
DE2205129A1 (de) 1972-08-17
FR2124103B1 (de) 1975-01-17
DE2205129C3 (de) 1975-09-04
JPS571365B1 (de) 1982-01-11

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