US3514985A - Profiling of metal billets - Google Patents

Profiling of metal billets Download PDF

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Publication number
US3514985A
US3514985A US660247A US3514985DA US3514985A US 3514985 A US3514985 A US 3514985A US 660247 A US660247 A US 660247A US 3514985D A US3514985D A US 3514985DA US 3514985 A US3514985 A US 3514985A
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Prior art keywords
rollers
blank
work
profiling
metal
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Expired - Lifetime
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US660247A
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English (en)
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Jacob Marcovitch
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ROTARY PROFILE ANSTALT
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ROTARY PROFILE ANSTALT
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    • 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
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B21D15/06—Corrugating tubes transversely, e.g. helically annularly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/42—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for step-by-step or planetary rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/12—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B21C37/205—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls with annular guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/20—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls
    • B21C37/207—Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies ; Making tubes with angled walls, ribbed tubes or tubes with decorated walls with helical guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00—Making articles shaped as bodies of revolution
    • B21H1/18—Making articles shaped as bodies of revolution cylinders, e.g. rolled transversely cross-rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H5/00—Making gear wheels, racks, spline shafts or worms
    • B21H5/005—Worms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
    • B21H7/10—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons knives; sickles; scythes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/004—Heating the product

Definitions

  • the invention provides a method and apparatus for forming metal articles from blanks and billets by rotating a series of work rollers in an orbit, and mounting a blank for its surface zone to be intersected in turn by successive rollers, for the metal to be plastically deformed to the contour of the rollers, without significant disturbance of the metal beyond the surface zone.
  • This invention relates to the formation of metal articles from billets or blanks by a rolling operation that causes plastic deformation of the billet beyond the elastic limit of the metal, and which is distinct from a cutting operation in that no material, save insignificant flash, is removed from the billet.
  • Profiling by rolling is a well-known technique.
  • the blank is rolled between opposed surfaces, often the surfaces of juxtaposed rollers that define a convergent throat through which the billet is drawn or fed.
  • the billet is in continual contact with the surfaces throughout its sojourn in the throat, and receives from the surfaces a contour or contours complementary to that or those of the surfaces.
  • the object of the present invention is to provide a technique for the formation of metal articles by localised plastic deformation that does not 4require the provision of moulds nor the application of force of the magnitude that is needed to provoke plastic fiow throughout the entire mass of the blank.
  • the technique consists in rotating a series of small work rollers continuously one after the other in an orbit, mounting a blank for its surface zone to intersect the orbit and thereby to be impinged on in turn by each of the rollers in endless succession, for the metal of the surface zone to be plastically deformed to the contour of the rollers, without significant disturbance of the metal beyond the surface zone.
  • surface zone is meant the portion of the blank at and close to the surface, for instance, in a gear wheel the portion of the wheel which contains the gear teeth.
  • FIG. 1 is a fragmentary semi-schematic end view of one form of apparatus, operating on a blank;
  • FIG. 2 is a similar view of a second form of apparatus
  • FIG. 3 is a similar view of a third form of apparatus
  • FIG. 4 is a side view of the apparatus of FIG. 3;
  • FIG. 5 is an end view of a modified form of the apparatus shown in FIGS. 3 and 4;
  • FIG. ⁇ 6 is a semi-schematic end view of a single profiling unit operating on a disc to produce a pinion
  • FIG. 7 is a fragmentray detail view of the action of a Work roller on a disc upon which gear teeth are being formed
  • FIGS. 8 and 9 ⁇ are semi-schematic views illustrating the intersection of the paths of a series of Work rollers with the circumference of a disc on which gear teeth are formed;
  • FIG. 10 is a fragmentary view illustrating the action of a backed series of work rollers on a stack of metal strips to produce hacksaw blades
  • FIG. l1 is a fragmentary view illustrating the action of a work roller on a blank in the form of a bar to produce rack teeth
  • FIG. l2 is a cross-sectional view through a cylindrical blank, surrounded partially by working rollers;
  • FIG. 13 is a side view of the arrangement of FIG. l2, illustrating one profiling unit in operation.
  • the apparatus to carry out the method of the invention consists basically of a unit in the form of a cage 10 in which are journalled a series of small Work rollers 12, each individually rotatable.
  • the rollers are usually identical.
  • the cage is usually composed of two annular walls (FIG. 4) that are co-axial and are formed with registering apertures to receive pintles 14 projecting from the rollers to either side.
  • the series of rollers is arranged for rotation in a fixed orbit, which may be circular, if the cage is circular and arranged to rotate about its axis (FIG. l).
  • the cage may be oblong and articulated in the manner of a caterpillar tread, as in FIG. 2, where the orbit is elliptical. It is essential that the work rollers be backed.
  • the backing is a central roller 16 against which stub axles of each roller bear, and which is held in place by structure not illustrated.
  • the unit may be backed by a roller or rollers 18 (FIG. l) which may themselves be backed by other rollers, and so on.
  • the backing is provided by a stationary member 20 around which the articulated cage 10 and the rollers 12 orbit.
  • the back-up member 20 is held in a framework or similar structure, not illustrated.
  • the work rollers may be backed by a series of small rollers 22 carried by the cage 10 (or by another cage).
  • the rollers 22 are themselves backed by the backing member or roller 20- or 18. (In FIGURE 5, a concave backing member 13 is shown.)
  • the drive mechanism may be of any suitable kind, such as gearing or, in the case of a chain cage, sprocket wheels.
  • the basic units of the invention may be operative singly, as is seen in FIGS. 3, 4 and 5, in which case they are associated with structure such as rollers 24 which back the blank 26; or in conjunction with another unit or units, as seen in FIG. l. Whichever arrangement is employed, the unit defines with the other unit or units, or with the rollers '24, a profiling space Within which a blank 26 is accommodated. External support such as chucks (not illustrated) may be provided to support the blank axially, or toprovide any desired feed and/ or rotation of the blank relatively to the units.
  • the geometry of the apparatus is such that the orbiting rollers 12 impinge against the surface of the blank 26 with the aim of causing plastic flow of the metal composing the surface zone but without disturbance of profounder zones. This can be achieved in the cold, but it is preferred that the blank be heated superficially to assist localised plastic flow.
  • an induction heating system such as shown at 29, FIG. 4, may be provided to heat elements of the blank about to be hammered by the work rollers 12.
  • FIGS. l, 3, 4, and 5 operate upon a cylindrical or cylindroidal blank that is rotated with its axis substantially parallel to the axes of the work rollers, to impose on it a profile which is continuous around the circumference, such as annular or (as seen in FIG. 4) helical grooves.
  • a profile which is continuous around the circumference, such as annular or (as seen in FIG. 4) helical grooves.
  • any suitable relative movement between it and the profiling unit can be employed.
  • the blank need not be a solid of revolution.
  • the unit 10, 12 is arranged for rotation about its axis, as in some of the previous embodiments, but the blank is a disc 30 set on a shaft 31, 4which is clamped by means not illustrated, and arranged for rotational movement about its axis.
  • the rollers 12 As the unit 10, 12 rotates, as shown by the arrows, the rollers 12 in turn impinge on the surface of the blank 30 to profile it, parallel to the axis o-f the shaft so that the profile is imposed on it along the length of the blank. It will usually be the case that the blank 30 is not rotated at this stage, so that the profile will be straight along its length, but it is conceivable that some rotation will take place so that the profile -will be helical.
  • the blank 30 is turned through the required degree after each pass beyond the unit 10, 12 to extend the area of profiling, and so on.
  • the blank shown in this and the other gures need not be solid, and could equally be hollow, for instance a tube.
  • a rotating tube, with its axis square or nearly square, to the path of the work rollers could also yield circumferential or helical fins.
  • the blank is a disc 34, and the rollers 12, of which only one is shown, are formed with circumferential ribs 36.
  • a backing roller 25 is complementally ribbed to support the roller 12.
  • the disc 34 is mounted for rotation about its axis and its shaft is sturdily supported.
  • the circumferential ribs 36 profile the disc to form teeth 40 and the disc is slowly rotated until the whole periphery has been toothed. Since the disc is rotating continuously, the orbit of the rollers must be skewed, that is, inclined at an angle to the axis of the disc, so that the ribs on each roller register with the indentations made in the disc by its predecessor or predecessors. Careful control must of course be exercised over the relative speeds and degree of skewing of the unit and the blank.
  • FIGS. 8 and 9 Two examples of this situation are shown in FIGS. 8 and 9, each illustrating the orbital path of sets of rollers 12 in relation to the circumference of the blank 34 (shown fragmentarily in developed aspect).
  • FIG. 8 two rollers are shown, their paths so intersecting that of the circumference of the blank that each circumferential rib 36 registers in an indentation made by the rib of the preceding roller.
  • the leading rib on each roller impresses an indentation in an unmarked zone of the disc.
  • FIG. 9 a similar arrangement is illustrated, except that the ribs of the rollers 12 are staggered with respect to each other.
  • the three rollers 12 that are shown leftmost in the drawing register in the same indentations without initiating the formation of a new tooth.
  • the roller 12 on the extreme right does begin the deformation of a new tooth.
  • a straight gear tooth on the blank produced, each tooth being formed by localised plastic fiow of the metal under the action of several rollers.
  • the blank 40 is a pack of thin metal strips which is mounted for movement at right angles to the plane in which the workrollers 44 orbit.
  • the work rollers are formed with circumferential saw-toothed ribs 45 Which impose saw-tooth indentations into one side of the blank 40 as it is drawn past the rollers.
  • the blank is,i of course, suitably backed by fixed structure 41.
  • VThe resulting components are blades for a hacksaw .or a lbandsaw and are suitably set and hardened.
  • the arrangement shown in FIG. ll is, in fact, that of FIG. 2, the rollers 44 being the rollers 12, and the hacking rollers 46 the rollers 22.
  • the chain' 10 is shown, and the work rollers and backing rollers are mountedVV on it by pintles 48, 50 projecting from the rollers.
  • FIG. ll illustrating the production of a gear rack from a square-sectioned blank 43
  • the work rollers 47 are backed by a roller 52 suitably profiled to mate with the ribs 42 on the work rollers.
  • a roller 52 suitably profiled to mate with the ribs 42 on the work rollers.
  • a series of units 10, 12 is mounted around a cylindrical blank 52 which is moved axially and simultaneously profiled by the rollers of the units.
  • the units may extend around the full periphery of the blank, so that the whole of it is profiled in one pass.
  • Apparatus for proling the surface of a metal blank by rolling comprising (a) a series of small work rollers each having a proled central portion and circular section ends of lesser diameter than the central portion, (b) an endless cage in which the work rollers are mounted at spaced intervals, each work roller being individually rotatable in the cage; and (c) backing means around which the cage and work rollers move in an endless path so that the work rollers impinge in succession on the blank and their central portions roll on the surface of the blank to cause it to assume their profile, the work rollers rolling in line contact on the backing means, the total length of said line contact being greater than the length of the central portion of each work roller.
  • the backing means is a massive circular body in which meansis provided to drive the backing tbody about its axis to cause the work rollers to move in their path, and in which the work rollers roll in line contact directly on the surface of the backing body.
  • the backing means comprises a massive non-circular body and a series of backing rollers which are recessedfbetween their ends to accommodate the central portion of the work roller and which are mounted in the cagewhich is flexible for movement in the path with the cage and the -work rollers, each work roller being supported on two backing rollers with its central portion received in the recesses in References Cited UNITED STATES PATENTS 8/1880 Prosser 72--100 8/1905 Pogany et al. 72-100 6 1,929,987 10/1933 Mead 72-190 2,565,780 8/1951 Offutt 72-190 3,348,401 10/1967 ⁇ Sporck 72-194 5 LOWELL A. LARSON, Primary Examiner U.S. Cl. X.R. 72-100, 126

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Metal Rolling (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rollers For Roller Conveyors For Transfer (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Forging (AREA)
US660247A 1966-08-22 1967-08-14 Profiling of metal billets Expired - Lifetime US3514985A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA665031 1966-08-22

Publications (1)

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US3514985A true US3514985A (en) 1970-06-02

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US660247A Expired - Lifetime US3514985A (en) 1966-08-22 1967-08-14 Profiling of metal billets
US660245A Expired - Lifetime US3533260A (en) 1966-08-22 1967-08-14 Rolling of metal billets
US660386A Expired - Lifetime US3492849A (en) 1966-08-22 1967-08-14 Rolling of metal billets

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Application Number Title Priority Date Filing Date
US660245A Expired - Lifetime US3533260A (en) 1966-08-22 1967-08-14 Rolling of metal billets
US660386A Expired - Lifetime US3492849A (en) 1966-08-22 1967-08-14 Rolling of metal billets

Country Status (11)

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US (3) US3514985A (enrdf_load_stackoverflow)
AT (1) AT280018B (enrdf_load_stackoverflow)
BE (1) BE702873A (enrdf_load_stackoverflow)
CA (1) CA921294A (enrdf_load_stackoverflow)
CH (1) CH466193A (enrdf_load_stackoverflow)
DE (6) DE1602676A1 (enrdf_load_stackoverflow)
ES (1) ES344113A1 (enrdf_load_stackoverflow)
FR (3) FR1551913A (enrdf_load_stackoverflow)
GB (3) GB1179346A (enrdf_load_stackoverflow)
NL (1) NL6711546A (enrdf_load_stackoverflow)
SE (3) SE328539B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5546781A (en) * 1993-02-25 1996-08-20 Ernst Grob Ag Process for the production of a toothed rack via cold forming, the rack produced thereby, and an apparatus for practicing the process
US5765419A (en) * 1994-06-25 1998-06-16 Ernst Grob Ag Method and apparatus for a rolling of hollow articles
US6195860B1 (en) * 1998-11-11 2001-03-06 Fata Automation S.P.A. Welding electrode reshaping device
US20060230802A1 (en) * 2005-04-14 2006-10-19 Itt Manufacturing Enterprises, Inc. Apparatus for making grooved endform
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same

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Publication number Priority date Publication date Assignee Title
US3847004A (en) * 1971-03-25 1974-11-12 Bringewald Process Corp Apparatus and method for applying pressure and die and method for forming a part
DE2418454B2 (de) * 1974-04-17 1977-06-08 Schloemann-Siemag AG, 4000 Düsseldorf Mehradrige drahtstrasse fuer hohe produktionsleistung und grosse bundgewichte
US3940963A (en) * 1975-01-20 1976-03-02 New York Wire Mills Corporation Self-compensating die
DE2723001A1 (de) * 1977-05-20 1978-11-30 Achim Ing Grad Nitschke Verfahren und vorrichtung zum herstellen eines hohlkoerpers
NL7713195A (nl) * 1977-11-30 1979-06-01 Philips Nv Werkwijze en inrichting voor het vervaardigen van een hydrodynamisch groeflager alsmede een groeflager op die wijze vervaardigd.
DE2940473A1 (de) * 1978-04-07 1981-01-15 Nippon Steel Corp Verfahren und vorrichtung zur herstellung von metallprofilen
JPS611966Y2 (enrdf_load_stackoverflow) * 1979-10-22 1986-01-22
FR2479714B1 (fr) * 1980-04-03 1985-11-29 Bruss Polt I Procede de fabrication de microfils, dispositif pour la mise en oeuvre dudit procede et microfils obtenus par ledit procede
FR2482484A1 (fr) * 1980-05-14 1981-11-20 Renault Outil de faconnage par roulage d'une rainure de clavetage a l'interieur d'une piece cylindrique
GB8419187D0 (en) * 1984-07-27 1984-08-30 Wilson A I Rolling machine
FR2576228B1 (fr) * 1985-01-23 1989-12-01 Escofier Tech Sa Procede et dispositif pour la realisation de gorges sur une paroi de revolution
JPH0613123B2 (ja) * 1986-01-30 1994-02-23 日本冶金工業株式会社 プラネタリ−ミルライン圧延方法
NL8902357A (nl) * 1989-09-21 1991-04-16 Philips Nv Inrichting voor het vervaardigen van een groeflager, alsmede werkwijze voor het vervaardigen van een groeflager, waarbij gebruik wordt gemaakt van de inrichting.
US6718809B1 (en) * 1998-01-10 2004-04-13 General Electric Company Method for processing billets out of metals and alloys and the article
EP0955110B1 (de) * 1998-05-07 2004-04-07 Leico GmbH & Co. Werkzeugmaschinenbau Verfahren zum Drückwalzen und Drückwalzvorrichtung
RU2191652C1 (ru) * 2001-04-04 2002-10-27 Глухов Дмитрий Евгеньевич Способ получения заготовок с мелкозернистой структурой
CN112916620B (zh) * 2021-01-14 2022-08-09 山东莱锻机械股份有限公司 一种GCr15辊套的锻造工艺

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US231094A (en) * 1880-08-10 File-cutting machine
US798448A (en) * 1904-02-15 1905-08-29 Alexander Pogany Mechanism for corrugating tubes.
US1929987A (en) * 1930-06-09 1933-10-10 Alice F Mead Rod reducing apparatus
US2565780A (en) * 1946-04-26 1951-08-28 Nat Tube Co Roller die
US3348401A (en) * 1964-08-14 1967-10-24 Lodge & Shipley Co Methods and equipment for the widening of stock

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US576822A (en) * 1897-02-09 The morris
US767314A (en) * 1902-10-14 1904-08-09 Anton Richard Rolling-mill.
US2358307A (en) * 1942-08-29 1944-09-19 Clarence L Dewey Tube reducing machine
US2978933A (en) * 1958-03-05 1961-04-11 Sendzimir Tadeusz Beambacked planetary rolling mill
US2988937A (en) * 1958-11-12 1961-06-20 Nowakowski Peter Leo Tube reducing mill

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US231094A (en) * 1880-08-10 File-cutting machine
US798448A (en) * 1904-02-15 1905-08-29 Alexander Pogany Mechanism for corrugating tubes.
US1929987A (en) * 1930-06-09 1933-10-10 Alice F Mead Rod reducing apparatus
US2565780A (en) * 1946-04-26 1951-08-28 Nat Tube Co Roller die
US3348401A (en) * 1964-08-14 1967-10-24 Lodge & Shipley Co Methods and equipment for the widening of stock

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5546781A (en) * 1993-02-25 1996-08-20 Ernst Grob Ag Process for the production of a toothed rack via cold forming, the rack produced thereby, and an apparatus for practicing the process
US5765419A (en) * 1994-06-25 1998-06-16 Ernst Grob Ag Method and apparatus for a rolling of hollow articles
US6195860B1 (en) * 1998-11-11 2001-03-06 Fata Automation S.P.A. Welding electrode reshaping device
US20060230802A1 (en) * 2005-04-14 2006-10-19 Itt Manufacturing Enterprises, Inc. Apparatus for making grooved endform
US20110158767A1 (en) * 2009-12-29 2011-06-30 Ohio Rod Products Reduced material, content fasteners and systems and methods for manufacturing the same

Also Published As

Publication number Publication date
SE328536B (enrdf_load_stackoverflow) 1970-09-21
DE1602676A1 (de) 1970-11-12
US3492849A (en) 1970-02-03
US3533260A (en) 1970-10-13
DE1976208U (de) 1968-01-04
FR1594523A (enrdf_load_stackoverflow) 1970-06-08
DE1975713U (de) 1967-12-28
CA921294A (en) 1973-02-20
AT280018B (de) 1970-03-25
CH466193A (fr) 1968-12-15
NL6711546A (enrdf_load_stackoverflow) 1968-02-23
GB1199963A (en) 1970-07-22
GB1179346A (en) 1970-01-28
GB1198117A (en) 1970-07-08
DE1976207U (de) 1968-01-04
DE1602131A1 (de) 1970-04-09
FR1551913A (enrdf_load_stackoverflow) 1969-01-03
ES344113A1 (es) 1968-09-16
DE1602130A1 (de) 1970-04-09
BE702873A (enrdf_load_stackoverflow) 1968-02-21
SE328539B (enrdf_load_stackoverflow) 1970-09-21
FR1551915A (enrdf_load_stackoverflow) 1969-01-03
SE328537B (enrdf_load_stackoverflow) 1970-09-21

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