Including Means To Position Tool Along Axis Patents (Class 72/247)
  • Patent number: 10421106
    Abstract: A rolling mill includes: work rolls configured to roll a rolling material; intermediate rolls supporting the work rolls from above and below, respectively; back-up rolls supporting the intermediate rolls from above and below, respectively; position adjusting means for adjusting the positions of the intermediate rolls relative to the work rolls and the back-up rolls in the direction of conveyance of the rolling material; detecting means for detecting horizontal forces on the work rolls; offset-amount calculating means for calculating the offset amounts of the intermediate rolls based on the horizontal forces on the work rolls detected by the detecting means; and controlling means for controlling the position adjusting means such that the positions of the intermediate rolls are offset by the offset amounts calculated by the offset-amount calculating means.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: September 24, 2019
    Assignee: PRIMETALS TECHNOLOGIES JAPAN, LTD.
    Inventor: Takashi Norikura
  • Patent number: 9354036
    Abstract: A diagnosis system and method to detect wear between a first set of teeth of a first gear and a second set of teeth of a second intermeshing gear, the diagnosis system having a first target associated with the first set of teeth, a second target associated with the second set of teeth, a first sensor adapted to detect the location of the first target, a second sensor adapted to detect the location of the second target, and a processing system in data communication with the first sensor and the second sensor, the processing system being adapted to process a spatial relationship between the first target relative to the second target after a time lapse of rotation between the first set of teeth and the second set of teeth.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: May 31, 2016
    Assignee: Textron Innovations Inc.
    Inventors: Walter Riley, Keith Hale, Charles Eric Covington
  • Patent number: 9180503
    Abstract: The invention relates to a roll stand for rolling a product, in particular made of metal, comprising a pair of first rollers contacted by a pair of second rollers supporting the first rollers, wherein the first roller and the second rollers have an asymmetrical radius curve (CVC grind) relative to a center plane, wherein the radius curve of the first rollers is represented by a polynomial of the third or fifth order. In order to design the wedging of a second roller supporting a first roller such that optimal operating conditions are set, the invention proposes that the radius curve of the second roller is given by a polynomial of the third or fifth order, wherein special relationships are prescribed for the ratios between the coefficients.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: November 10, 2015
    Assignee: SMS group GMBH
    Inventors: Jürgen Seidel, Olaf Norman Jepsen
  • Publication number: 20150027192
    Abstract: Disclosed is a flexible roll forming device including: bases respectively disposed on opposite sides with respect to a process direction center line in a left/right direction, each having an opening formed in an upper side thereof connected to an inside thereof, and rails configured thereon on opposite sides of the opening in a lateral direction of the process; forward/backward moving means having a slide plate provided to be movable along the rails on the base; turning means rotatably provided to the slide plate; and roll forming means provided on the turning means to include upper and lower forming rolls for subjecting a material fed thereto to flexible roll forming by using the upper and lower forming rolls while varying positions in the lateral direction of processing with the forward/backward moving means, and angles from a process direction with the turning means.
    Type: Application
    Filed: December 24, 2013
    Publication date: January 29, 2015
    Applicant: SUNGWOO HITECH CO., LTD.
    Inventors: Mun Yong LEE, Jin Ho Jung
  • Publication number: 20130145808
    Abstract: A tapered roll stand for making seamless pipe has a stationary frame formed relative to a workpiece-travel direction with a pair of laterally and horizontally oppositely open windows. Respective cover doors carried on the frame are vertically shiftable between respective closed positions covering the respective windows and open positions offset therefrom and exposing the respective windows. A pair of tapered rolls are each shiftable horizontally through a respective one of the windows into a use position inside the frame, lying to a respective horizontal side of the direction, and rotatable about a respective axis forming an acute angle with the direction. A pair of Diescher disks are vertically engageable with a workpiece extending in the direction between the tapered rolls, and respective roll-positioning actuators carried on the doors are couplable with the tapered rolls in the use position for setting positions of the tapered rolls.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 13, 2013
    Inventors: Walter HOEFFGEN, Thomas Leisten, Manfred Leferink
  • Publication number: 20130086964
    Abstract: A zeroing system of a rolling stand which allows to replace the working cylinders or rolls in a four-high rolling stand for hot rolling strips and to subsequently zero the rolling stand without removing the strip from between the rolls themselves during the step of rolling. Furthermore, the system of the invention allows to very rapidly and accurately carry out the zeroing operation, thus increasing the productivity in the entire production system.
    Type: Application
    Filed: May 26, 2011
    Publication date: April 11, 2013
    Inventors: Gianpietro Benedetti, Luca Sandrin
  • Patent number: 8413476
    Abstract: A rolling mill stand for production of rolled strip or sheet metal has working rolls which are supported on supporting rolls or on intermediate rolls and supporting rolls. The working rolls and/or intermediate rolls are arranged in the rolling mill stand so as to be displaceable axially with respect to one another. Each working and/or intermediate roll has a curved barrel contour which runs over the entire effective barrel length and can be described by a trigonometric function. The two barrel contours of adjacent rolls complete one another in a complementary way, in the unloaded state, solely in one specific relative axial position of the rolls of the pair of rolls, so that inhomogeneities in the load distribution along the contact line of two adjacent rolls are to be minimized.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: April 9, 2013
    Assignee: Siemens Vai Metals Technologies GmbH
    Inventors: Alois Seilinger, Markus Widder
  • Publication number: 20120279270
    Abstract: In a Turk's head stand, double inner frames are disposed inside an outer frame. A first inner frame is disposed so as to be adjusted in the vertical direction, and a second inner frame is disposed so as to be adjusted in the horizontal direction. Four-way straightening rolls and position adjusting devices are incorporated inside the second inner frame. Mechanical structures for convexo-concave engagement are disposed on faces of the respective roll chocks and yokes and the inner frames opposed to each other, thereby to guide the respective roll chocks and yokes, by utilizing descending motions of the inner frames, after connection with a pressing device has been released, to form the stack body in series, and to enable the stack body to be withdrawn from the roll stand.
    Type: Application
    Filed: December 28, 2009
    Publication date: November 8, 2012
    Applicant: NAKATA MANUFACTURING CO., LTD.
    Inventors: Hiroaki Yabuta, Takeshi Watanabe, Tomoyasu Nakano
  • Patent number: 8276422
    Abstract: The invention pertains to a rolling device (1) with at least two rolls that are respectively supported in a roll stand (3) by means of chocks (2), wherein the rolls are provided with axial displacement means (4) that serve for the axial displacement in a displacing direction (x) and make it possible to move the rolls into a desired position relative to the roll stand (3), as well as to hold the rolls in this position, and wherein the rolls are functionally connected to bending means (5) that make it possible to subject the rolls to a bending moment. In order to maintain the bending force losses caused by the weight of the axial displacement means at a minimum, the invention proposes that a first functional end (6) of the axial displacement means (4) is arranged on the roll stand (3) directly or indirectly by means of an articulated connection (7) and a second functional end (8) of the axial displacement means is arranged on the chock (2) by means of an articulated connection (9).
    Type: Grant
    Filed: February 14, 2008
    Date of Patent: October 2, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventor: Andreas Berendes
  • Patent number: 8230711
    Abstract: A rolling mill (1) for rolling a metal workpiece (2) that is provided with at least one roll stand (3) as well as with a conveyor (4) for the material to be rolled (2) extending on both sides of the roll stand (3) for a predetermined length (L) is based on the object that in the area of the longitudinal extent of the conveyor (4) at least one holder (5) for a coil (6) of the metal workpiece (2) is provided that can be positioned in a first position (A) in which it does not disturb the transport of the metal workpiece (2) along the conveyor (4) and that can be positioned in a second position (B) in which the coil (6) is positioned close to the roll stand (3) on the conveyor (4) for unwinding or winding up the coil (6).
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: July 31, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Armin Klapdor, Ralf Ohrndorf
  • Patent number: 8210015
    Abstract: A method for rolling plate or strip in a rolling stand with work rolls supported on backup rolls or on intermediate rolls with backup rolls, wherein the adjustment of the roll gap profile is carried out by axial shifting of pairs of rolls provided with curved contours. The adjustment of the roll gap profile is carried out by at least two pairs of rolls, which have differently curved contours and can be axially shifted independently of each other and whose different contours are calculated by splitting the resultant desired roll gap profiles that describe the roll gap profile into at least two different desired roll gap profiles and are transferred to the pairs of rolls.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: July 3, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Günter Kneppe, Wolfgang Rohde, Sabine Rohde, legal representative
  • Patent number: 8191392
    Abstract: [PROBLEMS] To provide a roll, a rolling mill and rolling method capable of not only effectively correcting the plate crown of a material to be rolled but also reducing the edge drop and preventing a roll from damage caused by the increase of the local line pressure between the rolls. [MEANS FOR SOLVING PROBLEMS] A roll crown is formed by a continuous curve having a local maximum point and a local minimum value point where the central region held between the local maximum point and the local minimum point represents one function and the end region from the local maximum point to the nearer roll end represents another function having an inclination of steeper gradient (or having a radius decreasing more sharply toward the roll end) than that of the extension of the function in the central region.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: June 5, 2012
    Assignee: JP Steel Plantech Co.
    Inventor: Tenehiro Kikkawa
  • Patent number: 8186197
    Abstract: A flange-forming apparatus allows a user to automatically adjust the device's roll forming stations, concurrently together, for changing the height of a flange formed into a metal web by the roll forming stations, e.g., for ductwork. The height is adjustable within an infinite range between set maximum and minimum limits. Each roll forming station includes upper and lower roll forming pairs, which cooperate for forming the flange or portion thereof. Each roll forming pair includes a first roll forming portion, and a second, coaxial roll forming portion that is axially moveable towards and away from the first roll forming portion. (The portions are in effect a laterally split roll forming die.) The second roll forming portions are rotatably supported on a plate-like adjustment linkage assembly, which can be shifted, using an array of motor driven screw members, towards or away from the first roll forming portions.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: May 29, 2012
    Assignee: Mestek Machinery, Inc.
    Inventor: David Walle
  • Patent number: 8096161
    Abstract: The invention relates to a method for rolling strips in the roll stand of a rolling mill, wherein said roll stand consists of two axially displaceable working rollers which are provided with a CVC-grinding or a similar contour and whose curved profile is expressed in a third or higher-order polynom and, simultaneously with simple handling of working rollers with large possibilities of adjusting the profile and flatness, the aim of said invention is to homogenize the working rollers wear.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: January 17, 2012
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Uwe Baumgärtel, Ralf Wachsmann, Jürgen Seidel
  • Publication number: 20110259070
    Abstract: The invention pertains to a roll arrangement (1, 101, 201), especially a roll arrangement of the work rolls (2, 3, 102, 103, 202, 203) of a rolling stand, which can be shifted in the axial direction by adjusting means (4, 104, 204), where the adjusting means (4, 104, 204) comprise at least one hydraulic cylinder (5, 6, 105, 106, 205), which controls the axial shiftability of the rolls, where the hydraulic cylinder is arranged in a frame, which is stationary or adjustable.
    Type: Application
    Filed: July 9, 2009
    Publication date: October 27, 2011
    Applicant: SMS SIEMAG AKTIENGESELLSCHAFT
    Inventor: Edgar Filk
  • Patent number: 7757531
    Abstract: Rolling stand for producing rolled strip, which includes work rolls, which are supported on backup rolls or intermediate rolls and backup rolls. The work rolls and/or the backup rolls and/or the intermediate rolls can be axially shifted relative to one another. The barrel length (L) of each intermediate roll in a six-high rolling stand or of each work roll in a four-high rolling stand has a cylindrical roll barrel section (Z) and a convexly curved roll barrel section (R(x)), such that the transition point from the cylindrical to the curved roll barrel section, calculated from the cylindrical end of the roll barrel, is in the range of L/2?x<L. The curved contour, which extends towards opposite ends of the two rolls over a portion of the barrel, is described by a polynomial R(x)=ao+ . . . anxn, where n?5.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: July 20, 2010
    Assignee: SMS Siemag Aktiengesellschaft
    Inventors: Jürgen Klöckner, Thorsten Bode, Ludwig Weingarten
  • Publication number: 20100064754
    Abstract: A method of rolling metal strip, and in particular steel strip, in which the metal strip passes through the roll gap of at least one roll stand, allows the work rolls of the roll stand which define the roll gap to be able to be shifted along their axes of rotation if differences occur in the shape of the roll gap from its desired shape. The method provides for flat products to be rolled which meet very stringent requirements in respect of their dimensional accuracy. For this purpose, the work rolls are shifted in the same direction in accordance with the invention, following a given shift strategy which is characterized by a regular change in the direction of shift (R?, R+) as a function of the reaching of given maximum shifted positions (V2, V4, V6, . . . , V28, V28, V30, V32 . . . , V53).
    Type: Application
    Filed: October 26, 2007
    Publication date: March 18, 2010
    Applicant: ThyssenKrupp Nirosta GmbH
    Inventor: André d'Hone
  • Publication number: 20100035079
    Abstract: A high-strength cold-rolled steel sheet having a tensile strength of 340 MPa or more, which can prevent galling, can be manufactured even if a large number of the steel sheets are continuously press-formed. This is because a surface texture thereof is con-trolled so that the surface texture includes flat areas in which a roughness profile has a deviation of ±2 ?m or less from a filtered waviness curve and a dented portion having a maximum depth between 10 ?m and 50 ?m from the filtered waviness curve, wherein an average area of the dented portion is more than 0.01 mm2 and 0.2 mm2 or less, and an area fraction of the dented portion relative to the entire surface thereof is 5% or more and less than 20%.
    Type: Application
    Filed: December 14, 2007
    Publication date: February 11, 2010
    Applicant: JFE STEEL CORPORATION
    Inventors: Kohei Hasegawa, Tadashi Inoue, Takamasa Kawai, Yukio Kimura
  • Publication number: 20100024506
    Abstract: The invention pertains to a rolling device (1) with at least two rolls that are respectively supported in a roll stand (3) by means of chocks (2), wherein the rolls are provided with axial displacement means (4) that serve for the axial displacement in a displacing direction (x) and make it possible to move the rolls into a desired position relative to the roll stand (3), as well as to hold the rolls in this position, and wherein the rolls are functionally connected to bending means (5) that make it possible to subject the rolls to a bending moment. In order to maintain the bending force losses caused by the weight of the axial displacement means at a minimum, the invention proposes that a first functional end (6) of the axial displacement means (4) is arranged on the roll stand (3) directly or indirectly by means of an articulated connection (7) and a second functional end (8) of the axial displacement means is arranged on the chock (2) by means of an articulated connection (9).
    Type: Application
    Filed: February 14, 2008
    Publication date: February 4, 2010
    Inventor: Andreas Berendes
  • Publication number: 20100024507
    Abstract: A roll coupled to a separately manufactured axle rotates together with the axle in order to perform a rolling process. The roll includes an inner cylindrical surface, an outer cylindrical surface and both side faces, and at least one key way provided on at least one of the side faces is arranged adjacent to the inner cylindrical surface rather than said outer cylindrical surface, The key way is in a concave curved shape and is a portion of a spherical surface or of an ellipsoidal surface.
    Type: Application
    Filed: January 17, 2007
    Publication date: February 4, 2010
    Applicant: TaeguTec, Ltd.
    Inventors: Chang Hee Choi, Kil Sung Kim
  • Publication number: 20080209970
    Abstract: A rolling mill (1) for rolling a metal workpiece (2) that is provided with at least one roll stand (3) as well as with a conveyor (4) for the material to be rolled (2) extending on both sides of the roll stand (3) for a predetermined length (L) is based on the object that in the area of the longitudinal extent of the conveyor (4) at least one holder (5) for a coil (6) of the metal workpiece (2) is provided that can be positioned in a first position (A) in which it does not disturb the transport of the metal workpiece (2) along the conveyor (4) and that can be positioned in a second position (B) in which the coil (6) is positioned close to the roll stand (3) on the conveyor (4) for unwinding or winding up the coil (6).
    Type: Application
    Filed: June 21, 2005
    Publication date: September 4, 2008
    Applicant: SMS DEMAG AKTIENGESELLSCHAFT
    Inventors: Arim Klapdor, Ralf Ohrndorf
  • Publication number: 20080163659
    Abstract: Disclosed herein is a roll profile for work rolls for both shape control and free ruled rolling. Each of the work rolls has a tapered end. Providing starting point of the tapered end of the rolls being origin of coordinates, the curve of respective tapered end is a quartic curve represented by a formula y(x)=a0+a1x+a2x2+a3x3+a4x4, x?[0,Le], y(x)?[0,He]. Because the transition between the tapered end and the roll body is smooth, asymmetric deformation due to the difference between abrasion of the upper and lower rolls is eliminated, which reducing wedged shape of strip and reducing unstable rolling due to asymmetrical strip stresses caused by the axial shifting of the roll.
    Type: Application
    Filed: March 24, 2006
    Publication date: July 10, 2008
    Applicant: ANGANG STEEL COMPANY LIMITED
    Inventors: Haodong Huang, Xianlin Chen, Anrui He, Lin Zhao, Xiaochun Sha, Xu Yang, Xin Chen, Yanqiang Xu, Pusheng Ma, Xiaobo Guo, Haoran Dong, Shengtian Wu
  • Patent number: 7396021
    Abstract: A roll stub is rotatable relative to a stationary support and has a rotatable support fixed to the roll stub, an annular and radially directed seal surface fixed on one of the supports, and a seal ring on the other of the supports having a lip engageable with the seal surface. A support element that is substantially less stiff than the seal ring is provided between the other support and the seal ring for biasing the lip against the seal surface while permitting of the seal ring relative to the other support. A clamp body rotationally fixed to the other support directly engages the seal ring and presses the seal ring directly against an abutment. Interengaging tooth formations on the clamp body and on the seal ring arrest the seal ring on the other support against angular movement thereon while permitting relative radial movement.
    Type: Grant
    Filed: May 4, 2006
    Date of Patent: July 8, 2008
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Karl Keller, Konrad Roeingh
  • Patent number: 7383712
    Abstract: The invention relates to a torque support on oil collecting receptacles (2, 2?) in a region of a paired connection of spindle heads and roll necks (1, 1?) in rolling mill stands during adjustment thereof in both vertical and axial directions, with a respective attachment point on both upper and lower collecting receptacles (2, 2?). The new torque support consists of a one-piece strip (3) having, in particular, a rectangular cross-section and formed of flection-resistant material, and which is pivotally connected at an upper end with the upper oil collecting receptacle (2) in a vertical plane by an articulated joint (4) and, in a region of its lower end (9), is slidably guided in the pendulum plane in formlockingly compatible opening (5) of a guide link member (6) so that the distance and the inclination angle (?) change.
    Type: Grant
    Filed: November 25, 2004
    Date of Patent: June 10, 2008
    Assignee: SMS Demag AG
    Inventor: Gerhard Artel
  • Patent number: 7367209
    Abstract: The invention relates to a method for the optimization of shift strategies, as a function of the strip width, for best possible usage of the advantages of CVC/CVCPlus technology in operation of strip-edge oriented shifts in 4-/6-roller stands, comprising a pair of working rollers and a pair of support rollers for a 4-roller stand and, in addition, a pair of intermediate rollers for a 6-roller stand, whereby at least the working rollers and the intermediate rollers cooperate with devices for axial shifting, characterized in that selection of the shift position (VP), for the shifting working/intermediate rollers, is made as a function of strip width. The working/intermediate rollers are then positioned in various positions (P), relative to the strip edge and, within differing strip width ranges (B), the shift position (VP) of each roller is given by an incremental linear progressive function.
    Type: Grant
    Filed: November 11, 2004
    Date of Patent: May 6, 2008
    Assignee: SMS Demag AG
    Inventors: Andreas Ritter, Rüdiger Holz
  • Patent number: 7350388
    Abstract: A method for determining a shape of a shift roll for a rolling mill, includes the steps of determining a necessary control amount distribution ?i for a plate crown with respect to plate widths, based on a distribution of the number of plates rolled by a target rolling mill with respect to plate widths, and providing a maximum radius difference yA0 of the shift roll. The method further includes the steps of preliminarily determining a line yi of a roll radius distribution with respect to plate widths, based on the necessary control amount distribution ?i and the maximum radius difference yA0, shifting the line yi of the roll radius distribution by a maximum roll shift to obtain a distribution ?yBi of a roll gap change amount with respect to plate widths under the maximum roll shift, and smoothing sharp local changing part of the distribution ?yBi of the roll gap change amount.
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: April 1, 2008
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Hisashi Honjo, Masayoshi Sato
  • Patent number: 7316146
    Abstract: In the case of a rolling stand for producing rolled strip, which is provided with rolls which are axially displaceable with respect to one another, have a curved contour running over the entire effective barrel length and complement one another exclusively in a specific relative axial position of the rolls in the unloaded state, it is intended for the thickness profile of the roll gap over the active roll barrel length to be varied by axial displacement of the rolls provided with a roll barrel contour in relation to one another in such a way that a strip that is planar and free from undulations is obtained. This takes place by the profile of the barrel contour of the rolls of a pair of rolls being formed by a trigonometric function and the roll gap contour also being formed by a trigonometric function in dependence on the profile of the barrel contour and the position of the rolls within the axial displacement region.
    Type: Grant
    Filed: September 2, 2002
    Date of Patent: January 8, 2008
    Assignee: Voest-Alpine Industrieanlagenbau GmbH & Co.
    Inventors: Alois Seilinger, Andeas Mayrhofer, Alexander Kainz
  • Patent number: 7310985
    Abstract: A rolling device with at least two rolls installed in a common stand, the rolls being mounted on lateral stringers by bearings, which are able to move vertically along the lateral stringers, and with at least one axial adjusting device for one of the rolls. The axial adjusting device is directly assigned to the vertically adjustable bearings and is able to move vertically along with them.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: December 25, 2007
    Assignee: SMS Demag AG
    Inventors: Hermann Thiel, Christian Diehl, Achim Klein
  • Patent number: 7299673
    Abstract: Rolling device with two work rolls supported in a rolling stand by a chock and with at least two additional rolls supported in the rolling stand by an additional chock. At least one of the work rolls and at least one of the additional rolls is adjustable for adjusting a desired roll gap relative to the other work roll or relative to the other additional roll. The work rolls have axial shifting devices for axial shifting and holding the work rolls into a desired axial position relative to the rolling stand. The work rolls are operatively connected with bending devices, by which a bending moment can act on the work rolls. The axial shifting devices are arranged and act between the rolling stand and the work roll locking mechanism. The bending devices are arranged or act between the work roll chock and the chock of the additional roll.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: November 27, 2007
    Assignee: SMS Demag AG
    Inventors: Bernd Zieser, Achim Klein, Florian Lindner, Stefan Wendt
  • Patent number: 7251978
    Abstract: The aim of the invention is to improve known roll stands (10) which are characterized by working rolls (1,2) of various diameters, in such a way that a strip is obtained which is largely free of tensions and undulations, has a desired strip profile superelevation, and can be used approximately universally.
    Type: Grant
    Filed: January 18, 2002
    Date of Patent: August 7, 2007
    Assignee: SMS Demag AG
    Inventors: Jürgen Seidel, Wilfried Bald
  • Publication number: 20070175256
    Abstract: An apparatus and method for the forming of corrugations in cylindrical objects or plain sheets, which include but no limited to two or more rotating spline or keyed shafts with internally grooved sliding wheels. Springs or collars with elastic properties are located between sliding wheels to allow them to keep predetermined distance which varies under axial forces.
    Type: Application
    Filed: January 29, 2007
    Publication date: August 2, 2007
    Applicant: LINK-PIPE, INC.
    Inventors: Lembit Maimets, Garry Gladstein
  • Patent number: 7181949
    Abstract: A method for the strip-edge-oriented shifting of the intermediate rolls (11, 11?) in a six-roll rolling mill comprising respectively a pair of workrolls (10, 10?), intermediate rolls (11, 11?) and backup rolls (12, 12?), whereby at least the intermediate rolls (11, 11?) and workrolls (10, 10?) have devices for axial shifting cooperating with them and each intermediate roll (11, 11?) has a barrel elongated by the amount of the CVC-shifting stroke and a one sided setback (x) in the region of the strip edge. The method is characterized in that the upper intermediate roll (11) is shifted in the direction of the drive side AS) and the lower intermediate roll (11?) is shifted in the direction of the service side (BS)—or conversely—relative to the neutral shift position (Szw=0 mm) symmetrically to the rolling mill center (y—y) be respectively the same amount in the direction of their (x—x).
    Type: Grant
    Filed: July 11, 2001
    Date of Patent: February 27, 2007
    Assignee: SMS Demag Aktiengesellschaft
    Inventors: Klaus-Dieter Haberkamm, Andreas Ritter, Rüdiger Holz
  • Patent number: 7134307
    Abstract: A plate rolling mill includes a pair of work rolls that hold and press down a plate material therebetween, a plurality of backup rolls that prevent the work rolls from being deformed, and intermediate rolls each of which is disposed between the work roll and the backup roll so as to be shiftable. Each of the intermediate rolls has a contact roll portion that contacts with the backup roll, and an extension barrel portion that is connected to an end of the contact roll portion and does not contact the backup roll at any shifted position. The contact roll is formed to have a convex shape such that a convex center of the contact roll is positioned at a side of the extension barrel portion.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: November 14, 2006
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Hisashi Honjo, Takayuki Iwasaki
  • Patent number: 7093473
    Abstract: An apparatus for manufacturing a band plate has a rolling mill that includes a pair of upper and lower work rolls that roll a slab material having edge drop portions at both ends thereof, and a pair of backup rolls that contact non-rolling side surfaces of the pair of upper and lower work rolls, respectively to prevent the work rolls from being deformed. The work roll includes a reverse taper portion where a roll diameter gradually increases towards a barrel end portion thereof corresponding to the edge drop portion. The upper and lower work rolls are configured to be shiftable individually in the axial direction thereof. The backup roll includes an escape portion whose diameter gradually decreases towards an axial end thereof so as not to contact the reverse taper portion of the work roll, within a shifting range of the work roll.
    Type: Grant
    Filed: July 8, 2004
    Date of Patent: August 22, 2006
    Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Hisashi Honjo, Takayuki Iwasaki
  • Patent number: 7059163
    Abstract: The invention relates to a roll stand comprising a crown-variable-control (CVC) roll pair, preferably a CVC working roll pair and a back-up roll pair, which comprise a contact area (B cont) in which a horizontally active torque (M) acts that leads to a twisting of the rolls and thus to axial forces in the roll bearings. In order to keep the axial forces in the roll bearings as small as possible, the torque (M) is minimized by an appropriate CVC grinding.
    Type: Grant
    Filed: July 25, 2001
    Date of Patent: June 13, 2006
    Assignee: SMS Demag AG
    Inventors: Hans Georg Hartung, Klaus Klamma, Wolfgang Rohde, Jürgen Seidel
  • Patent number: 7032424
    Abstract: A cluster mill includes an axially displacing and holding device for displaceable intermediate and/or working mills (11), with the chocks (7) being guided in a sliding manner inside the cluster mill stand housing posts (1), the rolls (11) are be displaced in axially opposite directions by piston-cylinder units (5), and the piston rods (5a) are pivotally connected to a main traverse (4).
    Type: Grant
    Filed: December 5, 2002
    Date of Patent: April 25, 2006
    Assignee: SMS Demag AG
    Inventors: Konrad Walter Schunn, Christa Kluge
  • Patent number: 7021104
    Abstract: Device to absorb the axial loads generated on the rolls in a rolling stand (11) having a pair of working rolls (12a, 12b), a corresponding pair of back-up rolls (15a, 15b) and at least an intermediate roll (14) located between a working roll (12a) and a corresponding back-up roll (15a), in said device holding means (16, 40, 41) are provided to support the axial loads on the back-up rolls (15a, 15b) and/or the working rolls (12a, 12b) caused by the crossing of said at least one intermediate roll (14), so that the axial loads are discharged onto elements with very low rolling friction, totally or almost totally annulling the hysteresis relating to the vertical movements of the back-up rolls (15a, 15b) and working rolls (12a, 12b) and the relative chocks (26).
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: April 4, 2006
    Assignee: Danieli & C. Officine Meccaniche SpA
    Inventors: Fausto Drigani, Stanislaw Pawlowski, Enrico Ventulini
  • Patent number: 7004002
    Abstract: A strip rolling mill includes a pair of upper and lower work rolls for rolling a strip, intermediate rolls for supporting each of the paired work rolls, and back-up rolls for supporting each of the intermediate rolls. Each of the work rolls is provided with a tapered portion at one end thereof so that the tapered portions of the work rolls are on opposite sides of roll bodies thereof with respect to roll axis directions. When the material with a constant width is being rolled, axial positions of the work rolls are set at appropriate positions and axial positions of the intermediate rolls are changed to control a thickness distribution in a width direction of the material being rolled. This arrangement significantly improves an edge drop and at the same time minimizes edge drop variations.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: February 28, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Hidetoshi Nishi, Hirokazu Nakamae, Kenichi Yasuda, Kenji Horii, Youichi Matsui, Ichirou Maeno, Hideo Kobayashi, Haruyuki Yabe
  • Patent number: 6895794
    Abstract: A screw down cylinder, an upper backup roll chock, and an upper work roll chock are pressed against an upper crosshead by hydraulic cylinders, and an upper roll cross mechanism is actuated, whereby the upper backup roll chock (upper backup roll), the upper work roll chock (upper work roll), and the screw down device (screw down cylinders) can be synchronously moved in the same direction via the upper crosshead.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: May 24, 2005
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Mikio Yamamoto, Toshihiro Usugi, Keizou Takemura, Akira Kaya
  • Patent number: 6868707
    Abstract: A strip rolling mill includes a pair of upper and lower work rolls for rolling a strip, intermediate rolls for supporting each of the paired work rolls, and back-up rolls for supporting each of the intermediate rolls. Each of the work rolls is provided with a tapered portion at one end thereof so that the tapered portions of the work rolls are on opposite sides of roll bodies thereof with respect to roll axis directions. When the material with a constant width is being rolled, axial positions of the work rolls are set at appropriate positions and axial positions of the intermediate rolls are changed to control a thickness distribution in a width direction of the material being rolled. This arrangement significantly improves an edge drop and at the same time minimizes edge drop variations.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: March 22, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Hidetoshi Nishi, Hirokazu Nakamae, Kenichi Yasuda, Kenji Horii, Youichi Matsui, Ichirou Maeno, Hideo Kobayashi, Haruyuki Yabe
  • Patent number: 6851676
    Abstract: An inner seal ring is disclosed for use in an oil film bearing for a roll in a rolling mill. The roll has a neck with an intermediate section tapering from an end face to a reduced diameter end section contained within a sleeve. The sleeve is fixed in relation to the roll neck and is journalled for rotation in a bushing contained within a chock. A flexible neck seal is mounted on the intermediate section of the roll neck for rotation with the roll within a seal end plate fixed to the chock. The inner seal ring comprises a circular midsection with an annular face on one side and with inner and outer flanges projecting from an opposite side. The inner flange is configured to engage the neck seal, the outer flange is configured to coact in spaced relationship with the seal end plate to define a first labyrinth, and the annular face is contoured to coact in an abutting relationship with the roll end face in defining a second labyrinth.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: February 8, 2005
    Assignee: Morgan Construction Company
    Inventors: Armando S. Martins, Dennis Shriner, Peter N. Osgood
  • Patent number: 6688151
    Abstract: A roll shifting cylinder 14 is driven to pivot a lever arm 12, thereby shifting a work roll 1 via a thrust bearing 15. A control unit 27 performs auto-positioning control, based on a shift amount performance value of the thrust bearing 15 detected by a shift amount detection sensor 16, so as to obtain a target roll shift position. A constant clearance amount is maintained between an end surface of the work roll 1 and the thrust bearing 15 during a rolling operation, and a chockless mill is effectively used as a work roll shift mill.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: February 10, 2004
    Assignees: Mitsubishi Heavy Industries, Ltd., Kawasaki Steel Corporation
    Inventors: Tadashi Hiura, Youichi Hangai, Shigefumi Katsura, Yoshitake Kohiro
  • Patent number: 6644086
    Abstract: A rolling mill apparatus for forming a web of material includes a die stand having an upper die assembly and a lower die assembly, the die stand bending the web to a predetermined formation angle as the web passes between the upper die assembly and the lower die assembly. A movement apparatus is utilized for selectively moving the upper die assembly in a vertical direction, thereby adjusting a vertical clearance between the upper die assembly and the lower die assembly. A pin is fixed to the upper die assembly and a cam block having a groove formed at a predetermined orientation angle is also provided. The pin travels in the angled groove when the upper die assembly is moved in the vertical direction and causes the upper die assembly to move horizontally. The predetermined orientation angle of the block is approximately equal to the predetermined formation angle.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: November 11, 2003
    Assignee: Formtek, Inc.
    Inventor: Ernest R. Bodnar
  • Publication number: 20030177807
    Abstract: Method to control the axial forces generated between the rolls in a rolling stand (10) for plane products (12) having at least a pair of working rolls (11a, 11b), a corresponding pair of back-up rolls (13a, 13b) and at least an intermediate roll (15a) located between one of the working rolls (11a) and a corresponding back-up roll (13b), axial translation means (16) associated with the working rolls (11a) to translate them axially (WR shifting), crossing means (19) associated with the intermediate roll (15a) to arrange it with its longitudinal axis (25a) inclined (IR crossing), that is, rotated on a horizontal plane by a set angle (&agr;) with respect to the longitudinal axes (21a, 21b, 23a, 23b) of the working rolls (11a, 11b) and of the back-up rolls (13a, 13b); according to this method the WR shifting and the IR crossing are controlled by control means (30) so as to reduce to a minimum the axial forces generated in the working rolls (11a, 11b), and consequently the axial load on the corresponding thrust bea
    Type: Application
    Filed: March 21, 2003
    Publication date: September 25, 2003
    Inventors: Paolo Bobig, Francesco Stella, Fausto Drigani
  • Patent number: 6598445
    Abstract: An assembly and method for leveling a metal strip by working the strip back-and-forth through a plurality of work rolls. Work rolls are disposed for engaging the strip. A backup roll supports the work roll against the strip. A cam roll supports the backup roll and is mounted to a frame with a bracket. A position guide assembly is associated with the backup roll for selectively adjusting a relative position of the backup roll to the cam roll. The position guide preferably comprises a screw and guide pin assembly mounted to the frame and a yoke attached to end portions of a plurality of the backup rolls. The adjusting comprises moving the backup roll relative to the cam roll to avoid undesired wear on only limited portions of the backup rolls.
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: July 29, 2003
    Assignee: Automatic Feed Company
    Inventors: David L. Mohring, Kurt R. McMutrie, Rick L. Behnfeldt
  • Publication number: 20030097866
    Abstract: A roll shifting cylinder 14 is driven to pivot a lever arm 12, thereby shifting a work roll 1 via a thrust bearing 15. A control unit 27 performs auto-positioning control, based on a shift amount performance value of the thrust bearing 15 detected by a shift amount detection sensor 16, so as to obtain a target roll shift position. A constant clearance amount is maintained between an end surface of the work roll 1 and the thrust bearing 15 during a rolling operation, and a chockless mill is effectively used as a work roll shift mill.
    Type: Application
    Filed: March 4, 2002
    Publication date: May 29, 2003
    Inventors: Tadashi Hiura, Youichi Hangai, Shigefumi Katsura, Yoshitake Kohiro
  • Publication number: 20030010083
    Abstract: Sheet piling and like steel shapes are made in a caliber rolling mill having upper and lower rolls of suitable contour. One of the rolls is axially fixed and the other can be shifted axially in opposite directions so that shoulders of the rolls engage and these positions are stored along with a relationship of axial force and spring constants of the mill frame. The rolling then takes these stored values into consideration.
    Type: Application
    Filed: February 21, 2002
    Publication date: January 16, 2003
    Applicant: SMS DEMAG AKTIENGESELLSCHAFT
    Inventors: Michael Minnerop, Hans-Jurgen Reismann, Helmut Terhart
  • Patent number: 6408666
    Abstract: There are disclosed a rolling mill capable of keeping a uniform plate thickness distribution and manufacturing a good-quality plate, and a rolling method. The rolling mill comprises working rolls movable in roll axis directions, profile-measuring means for measuring the profile of each of the working rolls, profile-estimating means for estimating the profile thereof, and a grinder for grinding each of the working rolls. The rolling mill also comprises instructing means for sending a command of grinding to the grinder at a time when the measured profile value or the estimated profile value regarding each of the working rolls reaches a given value.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: June 25, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Kenjiro Narita, Mitsuo Nihei, Takehiko Saito, Toshiyasu Shinmura, Shinichi Kaga, Takashi Kamoshita
  • Patent number: 6401506
    Abstract: In a rolling method applied to a multi-roll strip rolling mill composed of not less than four rolls, one of the zero point of the roll positioning devices and the deformation characteristic of the strip rolling mill or alternatively both the zero point of the roll positioning devices and the deformation characteristic of the strip rolling mill are found from a measured value of the thrust counterforces in the axial direction of the roll acting on at least all the rolls except for the backup rolls in the kiss-roll tightening state and also from a measured value of the roll forces of the backup roll acting on the backup roll chocks of the top and the bottom backup roll in the vertival direction. According to the thus obtained zero point of the roll positioning devices or the deformation characteristic of the strip rolling mill, the setting and control of the roll forces is executed when rolling is carried out.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: June 11, 2002
    Assignee: Nippon Steel Corporation
    Inventors: Shigeru Ogawa, Atsushi Ishii, Kenji Yamada, Satoru Ohta, Katsuhiko Koumoto
  • Patent number: 6374656
    Abstract: Rolling stand (10) for plane products and method to control the planarity of said plane products, said rolling stand comprising a pair of working rolls (11a, 11b), a corresponding pair of back-up rolls (13a, 13b) and at least an intermediate roll (15a) located between one of said working rolls (11a) and a corresponding back-up roll (13b), axial translation means (16) and bending means (17) being associated with at least one of said working rolls (11a) to translate it axially and respectively bend it, crossing means (19) being associated with said intermediate roll (15a) to arrange it with its longitudinal axis (25a) inclined, that is, rotated, with respect to the longitudinal axes (21a, 21b, 23a, 23b) of said working rolls (11a, 11b) and of said back-up rolls (13a, 13b).
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: April 23, 2002
    Assignee: Danieli & C. Officine Meccaniche S.p.A.
    Inventors: Estore Donini, Paolo Bobig, Cesare Galletti