Utilizing Diaphragm Between Fluid And Work Patents (Class 72/63)
  • Patent number: 9919352
    Abstract: An apparatus and method configured for manufacturing an aircraft part from formable material. The apparatus may include one or more rigid forming components onto which the formable material is placed and between which non-flange portions of the formable material may be compressed, and at least one inflatable component that, when expanded by inflation, presses flange portions of the formable material against at least one of the rigid forming components. The inflation component(s) may be arranged in any configuration for forming the formable material into C-shaped channels, single L-shaped channels, or opposing Z-shaped channels. Once pressed between the rigid forming components and/or the inflated inflatable components, the formable material may be heated for forming according to the particular formable material used.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: March 20, 2018
    Assignee: Spirit AeroSystems, Inc.
    Inventors: William Joseph Bryant, Trevor Scott Angell, Matthew Ryan Schroeder
  • Patent number: 9242434
    Abstract: A device and a method for producing laminated safety glass from at least two glass panes having an adhesive layer arranged in between. In order to provide a device and a method for producing laminated safety glass that allow for the cost-effective production of laminated safety glass, the device includes a base plate and a cover plate that can be adjusted relative to each other between an operating position and a removal position, a sealing frame disposed in a pressure tight manner in the operating position on the base plate and the cover plate, means for creating a vacuum in a hollow space formed between a cladding material covering the glass panes in the operating position and the base plate, means for creating an overpressure in the working space created between the cover plate and the flexible cladding material arranged on the glass panes in the operating position, and heating means for heating the glass panes to be joined.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: January 26, 2016
    Assignee: FOTOVERBUNDGLAS MARL GMBH
    Inventor: Michael Muschiol
  • Patent number: 9211598
    Abstract: A trim tool for trimming a part having a complex shape. The trim tool defines a plurality of electro-hydraulic cavities that are separated by walls in a lower die of the trim tool. Electrodes are discharged in the electro-hydraulic cavities to drive the panel into engagement with a trim steel edge. The discharge of the electrode severs the panel above the cavity and also across a portion of a wall separating adjacent cavities. Discharging an electrode in an adjacent cavity completes the trim operation above the wall.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: December 15, 2015
    Assignee: Ford Global Technologies, LLC
    Inventor: Alan John Gillard
  • Patent number: 9097116
    Abstract: A method is provided for reconditioning a turbomachine vane cover plate, by a forming apparatus. The vane having a mounting portion, an airfoil extending radially outward therefrom and a vane head connected to the airfoil. The vane also having a cover plate connected to the vane head, bulged in a direction opposite to the root. In a first analysis step, dimensions of the vane in relation to the cover plate are determined in respect of predefined reference points. If, thereafter, forming of the cover plate seems necessary and possible based on comparison of measurement values from the analysis step with predefined dimension values, the bulged cover plate is formed, at least essentially pressed smooth, by pressing by the forming apparatus in a forming step. After the forming step, the cover plate is re-treated in one or more follow-up steps. An apparatus is also provided for carrying out the method.
    Type: Grant
    Filed: December 1, 2012
    Date of Patent: August 4, 2015
    Assignee: ALSTOM TECHNOLOGY LTD.
    Inventors: Igor Zebec, Raphael Schweizer, Josip Stedul, Tobias Schmitt, Frigyes Szücs
  • Patent number: 8919165
    Abstract: An apparatus for forming a reclosable metal can includes a flexible bladder that receives pressure from at least one end. The bladder is received in movable dies that selectively open and close about the bladder, and more particularly about a metal body received between the bladder and die. The die preferably includes thread or lug profile cavities for forming circumferentially spaced thread lugs in the can body.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: December 30, 2014
    Assignee: Dayton Systems Group Inc.
    Inventor: Steven T. Cook
  • Patent number: 8910503
    Abstract: The present invention relates to the use of an adaptive protective textile (3) in sheet metalforming, comprising non-woven material which is draped over the active surfaces of the sheet metalforming tool (2), wherein the surfaces of the sheet metal (4) are protected from contact with the surfaces of the tool (2) and the need for lubricant is eliminated.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: December 16, 2014
    Assignee: Swerea IVF AB
    Inventors: Daniel Wiklund, Anders Bergner, Pernilla Valkenstrom Sundberg, Boel Wadman, Lars-Olof Ingemarsson
  • Patent number: 8844332
    Abstract: A device for the superplastic forming of a blank, in a mould with a lower and an upper mould, into a component. The blank in the mould can be subjected to pressure and temperature, and the blank has perforations, at least in some regions. The lower mould is formed at least partly with a permeable, in particular a gas permeable, drainage layer. As a consequence of the drainage layer, a blank with perforations can be formed directly, i.e., without further aids such as, e.g., a means of sealing, etc. and/or supplementary production operations, in the course of a superplastic forming process into a component, in particular into a suction component for an active aerodynamic surface of an aircraft, with a complex three-dimensional spatial shape. A simple, cost-effective and reliable process is enabled suitable for large production runs of components, which may be spherically curved in at least some regions.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: September 30, 2014
    Assignee: Airbus Operations GmbH
    Inventor: Syassen Freerk
  • Publication number: 20130160512
    Abstract: An apparatus for crimping a radially expandable stent includes a pressure vessel, shaping balloon, and mandrel. The mandrel is configured to slidingly receive a stent thereon, and to be slidingly advanced into the pressure vessel. The shaping balloon is inflated to radially compress the stent onto the form of the mandrel; such compression need not be uniform. Pressurization of the shaping balloon facilitates the expansion of the balloon to achieve compression of the stent, with depressurization of the shaping balloon causing the balloon to return to an unexpanded state.
    Type: Application
    Filed: November 13, 2012
    Publication date: June 27, 2013
    Applicant: EDWARDS LIFESCIENCES CORPORATION
    Inventor: Edwards Lifesciences Corporation
  • Patent number: 8056279
    Abstract: An inventive process is provided for creating residual compressive stress at a surface of a structure without resort to custom mandrels and dangerous high-pressure fluids. The inventive process yields autofrettage of a structure such as a tube, gun barrel and the like, the structure having an outer surface and an inner surface.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: November 15, 2011
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Robert Hansbrough Carter, William Steinle DeRosset
  • Publication number: 20110146362
    Abstract: The invention relates to a device for straightening up deformed metal and/or plastic elements after having undergone an excessive mechanical stress such as, for example, a shock. It comprises at least one supporting element (1) provided with means (17 to 20) for temporarily fixing, to the rigid structure of the vehicle and/or its body, a counter-brace element to which an actuator (14) may be fastened, said actuator being optionally provided with a jig (16) or the like and a positionally and/or orientationally adjustable mechanical linkage between said supporting element (1) and said counter-brace element, this linkage being designed so that at least a fraction of the force exerted by the actuator (14) on the counter-brace element is retransmitted onto the supporting element (1).
    Type: Application
    Filed: April 30, 2009
    Publication date: June 23, 2011
    Inventor: Christian Sarrion Sanchez
  • Patent number: 7963018
    Abstract: A method and apparatus is provided for separating two or more annular members such as bead assemblies or bead and apex assemblies. First, a flexible member is inserted into the annulus of the annular members. Next, the flexible member is inflated until the outer surface of the flexible member contacts the inner diameter of the annular member. Then the flexible member is axially expanded until the annular members are separated. Then the flexible member is deflated so that the annular members can be removed.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: June 21, 2011
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Richard David Vargo, Gary Robert Burg, Daniel Michael Spallone, Brian Richard Koch
  • Patent number: 7827838
    Abstract: A tooling method for calibrating a partially formed metal part in an electro-hydraulic forming tool. The method includes loading a partially formed metal part onto a forming surface of a die. The part is then clamped onto the forming surface and the part is pulsed with a high rate energy pulse to overcome a spring-back effect in the part. The EHF calibration tool includes a punch to which a part is held by clamps while a capacitive discharge circuit is discharged through electrodes provided in the tool. Upon discharge of the capacitive discharge circuit through the electrodes, a high rate energy pulse is applied through a liquid to calibrate the part.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: November 9, 2010
    Assignee: Ford Global Technologies, LLC
    Inventor: Sergey Fedorovich Golovashchenko
  • Patent number: 7810366
    Abstract: A method of electrohydraulically trimming a blank involving positioning a blank on a trimming member having a cutting edge such that a portion to be trimmed extends over the cutting edge and is in fluid communication with a chamber. Immobilize the blank with respect to the trimming member. Position a pair of electrodes in the chamber proximate the portion of the blank to be trimmed such that the electrodes and the trimming member are on opposite sides of the blank. Electrically connect the electrodes to a capacitor. Charge the capacitor. Fill the chamber with fluid to submerge the electrodes and to contact the portion of the blank to be trimmed. Discharge the capacitor across the electrodes to generate a pressure pulse that pushes the portion of the blank to be trimmed against the cutting edge thus trimming it off the blank.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: October 12, 2010
    Assignee: ford Global Technologies, LLC
    Inventor: Sergey Fedorovich Golovashchenko
  • Patent number: 7802457
    Abstract: An electrohydraulic forming (EHF) tool and a method of forming a sheet metal blank in an EHF operation. The tool may include a pair of electrodes and may be filled with a liquid. A high voltage discharge may be produced between the electrodes in a manner that induces a shockwave within the fluid. The shockwave may produce sufficient force within the liquid to form the blank against a die.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: September 28, 2010
    Assignee: Ford Global Technologies, LLC
    Inventors: Sergey Fedorovich Golovashchenko, Alan John Gillard, Douglas Piccard, Andrey M. Ilinich
  • Publication number: 20100037670
    Abstract: A hydroform die includes a plurality of seal units to provide fluid to die cavities. The plurality of seal units each define a piston cylinder. A piston is located within the cylinder and is selectively moveable between an open and a closed position. Additionally, the piston at least partially defines a valve chamber located on a first side of the piston and a piston chamber located on a second side of the piston. A piston fluid passage is defined by the piston to fluidly connect the valve chamber and the piston chamber.
    Type: Application
    Filed: August 12, 2008
    Publication date: February 18, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Mike M. Ghiran, Ranny Joe Nunley, David R. Friddell, William M. Crantas, Kevin R. Marks, David R. Jensen, Paul D. Larsen
  • Publication number: 20090235709
    Abstract: A non-planar sputter target having differing crystallographic orientations in portions of the sputter target surface that promote more desirable deposition and density patterns of material sputtered from the target surface onto a substrate. A closed dome end of the sputter target is comprised of a first crystallographic orientation and sidewalls of the sputter target are comprised of a crystallographic orientation different from that of the dome. The sputter target is formed, preferably by hydroforming or other metal working techniques, in the absence of annealing. The hydroforming manipulations result in the different crystallographic orientations while minimizing, or ideally omitting, the application of heat. Quick and cost effective non-planar sputter targets that are easily repeatably producable are achievable as a result.
    Type: Application
    Filed: May 29, 2009
    Publication date: September 24, 2009
    Applicant: Tosoh SMD, Inc.
    Inventors: Robert S. Bailey, Melvin K. Holcomb, David B. Smathers, Timothy Wiemels
  • Publication number: 20090084255
    Abstract: An inventive process is provided for creating residual compressive stress at a surface of a structure without resort to custom mandrels and dangerous high-pressure fluids. The inventive process yields autofrettage of a structure such as a tube, gun barrel and the like, the structure having an outer surface and an inner surface.
    Type: Application
    Filed: July 21, 2008
    Publication date: April 2, 2009
    Inventors: Robert Hansbrough Carter, William Steinle DeRosset
  • Patent number: 7509827
    Abstract: The present invention relates to a method and a device for expansion forming of an article. According to at least one aspect of the invention, an expansion forming tool is pressure-compensated from two sides, pressure differences on each side being equalized by means of a pressure transmitter, which is applicable to the tool.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: March 31, 2009
    Assignee: Avure Technologies AB
    Inventor: Keijo Hellgren
  • Patent number: 7493787
    Abstract: An electro-hydraulic forming tool is disclosed in which a membrane is retained between two volumes of liquid that are separated by a membrane. Electrodes are provided with a high voltage impulse to create a shockwave in one of the volumes of fluid that is transferred through the membrane to the other volume of fluid. The shockwave is transmitted to a blank that is formed into a one-sided die. The blank is formed against the forming surface of the die. Air evacuation means are provided to remove air from the upper surface of one or both volumes of liquid.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: February 24, 2009
    Assignee: Ford Global Technologies, LLC
    Inventors: Sergey Golovashchenko, Vyacheslav Mamutov, Andrey Ilinich
  • Patent number: 7461531
    Abstract: A press plant includes a press of pressure cell type, into which a tray device, which defines a space intended to receive a workpiece and, optionally, a forming tool, is insertable. The tray device comprises a tray plate and a tray frame. The tray frame is adapted to independently withstand, at least in certain portions, loads applied during the pressing operation. The tray device is divisible into at least an upper part and a lower part. The invention also relates to a method and use of a tray device in a press plant.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: December 9, 2008
    Assignee: Avure Technologies AB
    Inventor: Keijo Hellgren
  • Publication number: 20080209974
    Abstract: A metal blank that includes a binder trim component having at least one cut edge with a non-linear section. The creation of the non-linear section simultaneously forms a corresponding section in a binder trim component of an adjacent metal blank so that binder material can be shared therebetween. This reduces the amount of scrap metal, as the binder trim component is subsequently cut off and discarded. Furthermore, the non-linear section can include one or more strategically placed formations, such as projections, recesses, flat sections, etc., that cause it to be non-uniform along its length and to be specifically tailored to the manufacturing requirements of the part being formed.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 4, 2008
    Applicant: Shiloh Industries, Inc.
    Inventors: John R. Ewolski, James W. Walther, Stephen A. Fetsko
  • Publication number: 20080134741
    Abstract: An electro-hydraulic forming tool is disclosed in which a membrane is retained between two volumes of liquid that are separated by a membrane. Electrodes are provided with a high voltage impulse to create a shockwave in one of the volumes of fluid that is transferred through the membrane to the other volume of fluid. The shockwave is transmitted to a blank that is formed into a one-sided die. The blank is formed against the forming surface of the die. Air evacuation means are provided to remove air from the upper surface of one or both volumes of liquid.
    Type: Application
    Filed: December 11, 2006
    Publication date: June 12, 2008
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Sergey Golovashchenko, Vyacheslav Mamutov, Andrey Ilinich
  • Patent number: 7380429
    Abstract: An apparatus and method for locally expanding tubular member includes a pre-form die having a cavity with an expansion chamber therein to receive a portion of a tubular blank between ends thereof. The apparatus also includes a bladder apparatus for insertion in the tubular blank and cooperating with the pre-form die to locally expand the portion of the tubular blank in the expansion chamber to form a locally expanded tubular member.
    Type: Grant
    Filed: February 28, 2007
    Date of Patent: June 3, 2008
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Mike M. Ghiran, Sanjay M. Shah
  • Patent number: 7296449
    Abstract: A method for shaping an aerosol container (10) to a desired body contour. A container body (12) is formed into a cylindrical shape and installed into a mold (30) whose inner surface defines the desired body contour. A bladder (74) is fitted onto a tool (50) insertable into an open end (M) of the container body. Once the tool is inserted, the bladder is inflated with a hydraulic fluid. Pressurizing the bladder forces the bladder against a sidewall of the body forcing the body outwardly and deforming it against the inside of the mold. After the container body is shaped, the bladder is de-pressurized and the tool withdrawn leaving the container with a defined body contour. The hydraulic fluid with which the bladder is pressurized is, at all times, contained within the bladder and does not contact the container sidewall so no subsequent drying of the container is required after the shaping process is complete.
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: November 20, 2007
    Assignee: Ball Corporation
    Inventors: Edward F. Kubacki, John Czamota
  • Patent number: 7210323
    Abstract: A forming apparatus and method for minimizing wrinkling in the forming of a three-dimensional component from a two-dimensional blank. The forming apparatus includes vertically opposed sets of tools or binders. A first tool or binder apparatus has first and second sets of opposed sides having contoured binder surfaces. A second tool or binder apparatus is mounted in vertically opposed relation to the first binder apparatus, and includes first and second sets of opposed tool or binder segments that have contoured binder surfaces thereon that are complementary in shape to the respective binder surfaces of the first and second sets of opposed sides of the first binder apparatus. One of the first and second sets of opposed binder segments of the second binder apparatus have substantially similar contours and the other have different contours. One of the first and second sets of opposed binder segments of the second binder apparatus is elevated and movable with respect to the other.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: May 1, 2007
    Assignee: General Motors Corporation
    Inventors: Gary A. Kruger, Mark G. Konopnicki, Chongmin Kim, John Norman Johnson
  • Patent number: 7165301
    Abstract: An off-road motorcycle incorporates a swingarm assembly for pivotally supporting a rear wheel relative to a frame of the motorcycle. Preferably, the swingarm includes right and left arms extending rearwardly from a forward connecting portion. Right and left rear wheel mount members are secured to the right and left arms, respectively, to rotatably support the rear wheel of the motorcycle. Preferably, the arms of the swingarm assembly are formed at least partially by a hydroforming process and the center of each of the arms has a width that is greater than the width of either a forward or rearward end of the arm. In addition, the forward end of each of the right end left arms preferably is bent inward such that the forward portion of the swingarm assembly is narrower than the rear portion of the swingarm assembly. The hydroforming process permits the inner wall of the arms to be vertical and substantially planar along the region where the arms are bent about a generally vertically extending axis.
    Type: Grant
    Filed: May 13, 2005
    Date of Patent: January 23, 2007
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventor: Shidehiko Miyashiro
  • Patent number: 7155949
    Abstract: The present invention relates to a method in a press of pressure cell type comprising a forming tool and, separated therefrom, a diaphragm, which define a forming space in which a blank is inserted for forming thereof against the forming tool by pressing the diaphragm against the blank. A blank portion projecting from the forming space is gripped by means of at least one gripping device and the connection between the blank and the gripping device is shielded from the diaphragm at least when the diaphragm is pressed against the blank. The invention further relates to a press of pressure cell type and a tray device.
    Type: Grant
    Filed: February 17, 2003
    Date of Patent: January 2, 2007
    Assignee: Avure Technologies AB
    Inventor: Keijo Hellgren
  • Patent number: 7155948
    Abstract: The invention relates to a forming tool for forming sheet blanks in a diaphragm press of the kind comprising an openable, closed pressure chamber, which is divided in a gas and liquid tight manner by means of a flexible diaphragm. The forming tool is arranged on one side of the diaphragm and a sheet blank to be formed is arranged between the forming tool and the diaphragm. The opposite side of the diaphragm is pressurized by a fluid being supplied at high pressure to cause the flexible diaphragm to deform and, thus, the sheet blank to be pressed against the forming tool. The forming tool comprises an elongate cutting and flanging tool along at least part of its periphery and/or around an intended opening in the sheet blank.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: January 2, 2007
    Assignee: Avure Technologies AB
    Inventor: Keijo Hellgren
  • Patent number: 7150171
    Abstract: The present invention relates to a press of pressure cell type, a tray for use in a press of pressure cell type and a method. The tray comprises a tray frame, which defines a space for arranging a forming tool and/or a work-piece. Prestressing means are arranged on the external surface of the tray frame and induce a compressing prestress which acts in planes parallel to the plane of the tray. The tray frame presents a curvature along its entire circumference.
    Type: Grant
    Filed: May 15, 2003
    Date of Patent: December 19, 2006
    Assignee: Avure Technologies AB
    Inventor: Keijo Hellgren
  • Patent number: 7127925
    Abstract: A press of pressure cell type, which comprises a press chamber in which a diaphragm device is arranged. The diaphragm device comprises a diaphragm which together with a press plate forms a pressure cell and is adapted to exert a forming pressure on a workpiece in the press chamber. The edge area of the diaphragm is placed in an annular diaphragm support. The press of pressure cell type also comprises actuating means which are adapted to actively exert a force on the diaphragm support in the direction of the press plate, the diaphragm support pressing the edge area of the diaphragm against the press plate so that an initial seal is provided between the diaphragm at its edge area and the press plate, which seal is built up when supplying pressure medium to the pressure cell by expansion of the diaphragm. The invention also relates to a diaphragm device, a method for applying a pressing power and a method for exchanging a diaphragm in a press of pressure cell type.
    Type: Grant
    Filed: November 23, 2001
    Date of Patent: October 31, 2006
    Assignee: Avure Technologies AB
    Inventor: Keijo Hellgren
  • Patent number: 7124618
    Abstract: A clamp assembly for a hydroforming die includes a stationary lower bed to support a lower die half of the hydroforming die, a stationary upper bed spaced above the lower bed, at least one guide post extending between the lower bed and the upper bed, a movable slide disposed between the upper bed and the lower bed and movable along the at least one guide post to support an upper die half of the hydroforming die, a lifting cylinder operatively connected to the movable slide to move the movable slide and upper die half toward and away relative to the lower die half, at least one link mechanism connected to the upper bed and the movable slide to equalize a force on the hydroforming die, and at least one linkage cylinder operatively connected to the at least one link mechanism to activate the at least one link mechanism to prevent the movable slide and upper die half from moving away from the lower die half to keep the hydroforming die closed during a hydroforming process.
    Type: Grant
    Filed: March 7, 2006
    Date of Patent: October 24, 2006
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Mike M. Ghiran, Sanjay M. Shah, David R. Jensen, Terry A. Kent, Paul D. Larsen
  • Patent number: 7080536
    Abstract: A device for manufacturing formed parts by internal high pressure deformation. The device includes a housing composed of two tubular members which are placed one into the other and are connected by shrinkage, wherein the tool support unit is mounted in the concentric bore of the inner tubular member.
    Type: Grant
    Filed: July 28, 2004
    Date of Patent: July 25, 2006
    Assignee: Theodor Gräbener GmbH & Co. KG
    Inventor: Dieter Kapp
  • Patent number: 6955070
    Abstract: A device for punching work pieces in an internal high-pressure forming tool includes a punching die guided displaceably in a bore of the forming tool. The device also contains a drive with which the punching die is moved back and forth between the in-use position and the non-use position. In order to facilitate, in a simple and space-saving manner, the punching of work pieces in the internal high-pressure forming tool, the drive contains a pressure fluid and a pressure transfer device that can be elastically expanded via the pressure fluid between a base firmly attached to the tool and a punch head of the punching die. The pressure transfer device abuts a partition at least indirectly at the punch head.
    Type: Grant
    Filed: June 23, 2004
    Date of Patent: October 18, 2005
    Assignee: DaimlerChrysler AG
    Inventors: Jens Schult, Stefan Schwarz
  • Patent number: 6935150
    Abstract: The mould (10) includes at least one part (20), intended to be in contact with the component (12) being moulded, made from sintered vitreous silica. According to the process, said component (12) is formed by the superplastic forming in the mould (10) of a plate (18) made of a material capable of undergoing superplastic deformation, for example titanium or titanium alloy, aluminium or aluminium alloy, or any material exhibiting superplastic properties. Preferably, a barrier is formed between at least a part of the contact surfaces of the mould (10) and the component (12) being moulded, for example by coating with boron nitride, at least partially, the contact surfaces of the mould (10) and the component (12) being moulded, before placing the plate (18) in the mould (10), and/or by injecting an inert gas, notably helium or argon, between the contact surfaces of the mould (10) and the component (12) being moulded.
    Type: Grant
    Filed: September 12, 2001
    Date of Patent: August 30, 2005
    Assignee: Vesuvius Crucible Company
    Inventors: Daniel Merle, Frédéric Caillaud
  • Patent number: 6837088
    Abstract: A flask and tool assembly includes a forming tool insert that is housed within an insulated flask having four vertical sides. An insulation enclosure surrounds the flask and the flask contains a heater plate for contacting the bottom of the forming tool insert. The tops of the sides of the flask provide surfaces for gripping bottom edges of a sheet metal blank to be formed. A cover for the tool-containing flask provides complementary gripping surfaces for top edges of the sheet metal blank and defines a chamber above the sheet metal blank for pressurized forming gas. A peripheral seal underlies the sheet metal blank and bridges a space between the outer side surfaces of the forming tool insert and the inner surfaces of the sides of the flask, thereby obviating the need to provide a precision fit between the flask and forming tool insert.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: January 4, 2005
    Assignee: General Motors Corporation
    Inventors: Richard Murray Kleber, Edward W. Bennett, Richard Harry Hammar
  • Patent number: 6631630
    Abstract: The present invention provides an apparatus and a method which use hydroforming to shape complex structures from materials such as sheet metal or composites. In particular, an apparatus and a method for shaping complex structures using composites such as continuous-fiber or woven fiber composites with limited wrinkling or rupture of the composite during the shaping process.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: October 14, 2003
    Assignee: Board of Trustees of Michigan State University
    Inventors: Farhang Pourboghrat, Michael A. Zampaloni, Andre Benard
  • Patent number: 6591649
    Abstract: An apparatus for forming a generally planar metal plate into a dish with a three-dimensional pattern is provided. The apparatus comprises a mold having a forming surface with a contour corresponding to said three-dimensional pattern, and having edges corresponding to boundaries of the dish, which edges are defined by side walls essentially perpendicular to the forming plane; a forming device comprising a fluid basin and pairs of electric discharge members within the fluid and having an opening facing the mold to allow transmission of a pressure wave from the fluid to the metal plate; and an electric discharge circuitry for discharging a short and intense electric current through the pairs of electric discharge members generating an electric spark or breakdown within the fluid to yield formation of plasma, vapor or both.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: July 15, 2003
    Assignee: Pulsar Welding Ltd.
    Inventors: Oren Gafri, Yuri Livshiz
  • Patent number: 6513359
    Abstract: A fluid form that is used to produce deep-drawn articles (cf. 10) on any presses, and includes a ram (2), a hold-down plate (3) and a die (4), which can be filled, preferably, with water, wherein the sheet metal (10) to be deep-drawn is guided transversely between die and hold-down plate, should be improved in such a manner that no additional tools are required to trim the deep-drawn articles (cf. 10) and, optionally, for other operations. Hereby, the configuration of the respective fluid form as combination tool (1) is provided for the deep drawing operation and for further operations, such as trimming, wall profiling, notching, perforating or the like.
    Type: Grant
    Filed: May 21, 2001
    Date of Patent: February 4, 2003
    Inventors: Carsten Binder, Markus Binder
  • Publication number: 20020088263
    Abstract: In a method and a device for producing a circumferentially closed hollow profile, a hollow-profile blank is expanded by fluidic internal high pressure in an internal high-pressure forming tool, after which the hollow-profile blank assumes the final shape of the hollow profile. In order to make it possible in a simple manner to have a production of a hollow profile in which process reliability is ensured to a sufficient extent even in the case of high expansions of the hollow profile (higher than or equal to the breaking elongation of the material), during expansion, the hollow-profile blank is supported, on at least one partial circumferential region, by at least one diaphragm fastened to the inside, facing the blank, of the tool and capable of being acted upon by a controllable pressure acting from outside, the diaphragm shifting back elastically as expansion progresses, with the supporting pressure acting on the diaphragm being reduced at the same time.
    Type: Application
    Filed: December 21, 2001
    Publication date: July 11, 2002
    Inventor: Kai-Uwe Dudziak
  • Patent number: 6354125
    Abstract: An apparatus for hydroforming workpieces includes a first (11) and a second tool part (13) and a press device (1, 6, 7) which closes and holds together the tool parts during a forming cycle. The first tool part (11) is mounted in the press device (1, 6, 7). The second tool part (13) is disposed for insertion into and removal from the press device (1, 6, 7), for example with the aid of a conveyor (8). Further, the apparatus includes a supply of pressurized fluid (12) to the first tool part (11).
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: March 12, 2002
    Assignee: Automation, Press and Tooling AP&T AB
    Inventors: Claes S Bernelf, Kenneth A Hedin
  • Patent number: 6308545
    Abstract: For shaping small radii in edge and corner regions of preformed workpieces or blanks, the invention provides for a postforming of exclusively said edge and corner regions by high liquid pressure. For performing the method an apparatus has a die part (forming insert) with expansion spaces constructed in its edge and corner regions.
    Type: Grant
    Filed: December 27, 1999
    Date of Patent: October 30, 2001
    Assignee: Kuka Werkzeugbau Schwarzenberg GmbH
    Inventors: Lonka B{overscore (u)}rgel, Frank Schieck
  • Patent number: 6178796
    Abstract: A device and a method for shaping a flat article under high pressure, in which a one-sided forming tool is used together with a high pressure press equipped with a membrane. The one-sided forming tool comprises at least one first trimming device, a second trimming device provided with a punch, and with at least two clamps arranged to hold a blank in position over said one-sided forming tool. The clamps are arranged moveable in respect to each other such that the blank is stretchable and pressure is applicable by said membrane so shaping the blank against said one-sided forming tool within a single and continuous press operation. The one-sided forming tool also comprises a piercing device. The advantage of the invention is that an article may be stretched, trimmed, shaped and pierced in one continuous forming cycle, which article may also be formed from a blank that has been pre-painted on at least one side.
    Type: Grant
    Filed: May 28, 1999
    Date of Patent: January 30, 2001
    Assignee: Flow Holdings GmbH (SAGL) LLC
    Inventor: Keijo Hellgren
  • Patent number: 6079245
    Abstract: The invention concerns a device and a method for straightening out damaged metal and plastic elements. The device for straightening out a deformed element is characterized in that it comprises means for exerting pressure (3) on the deformed element (2), means for heating (6) the deformed element, at least a support reinforcement (5) secured to the deformed element (2), optionally a template (7) having the original shape of the deformed element, optionally an external support. The invention is generally useful for repairing deformed metal and plastic elements.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: June 27, 2000
    Inventor: Sanchez Christian Sarrion
  • Patent number: 5927120
    Abstract: A hydroforming apparatus capable of deforming relatively large and thick-walled workpieces, yet which is relatively small, simple, and inexpensive in construction and operation, includes a pressure vessel that is disposed within a frame. The pressure vessel includes upper and lower vessel members that support respective die sections therein. When the upper and lower vessel members are moved adjacent to one another, the die sections cooperate to define a die cavity in which a workpiece to be hydroformed is disposed. An inflatable bladder is disposed between one or both of the die sections and the associated upper and lower vessel members. During the hydroforming operation, pressurized fluid is introduced within the workpiece so as to expand it outwardly into conformance with the die cavity defined by the die sections. At the same time, pressurized fluid is introduced into the inflatable bladder, causing it to expand between the die sections and the associated upper and lower vessel members.
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: July 27, 1999
    Assignee: Dana Corporation
    Inventor: Richard A. Marando
  • Patent number: 5862695
    Abstract: This invention defines an improved method for superplastic forming (SPF) of metallic parts in which a cutout is formed in the blank from which the parts will be formed, and a secondary sheet is located between the blank and the pressurized gas. The cutout area of the blank becomes stretched so that there is minimal thinning in the air near the periphery of the cutout(s) in the blank, the secondary sheet is required to carry the gas pressure and to form the parts.
    Type: Grant
    Filed: December 21, 1996
    Date of Patent: January 26, 1999
    Assignee: The Boeing Company
    Inventors: Joseph D. Beal, Chris J. Takayama
  • Patent number: 5829137
    Abstract: A method for manufacturing a vehicle wheel includes the steps of providing a wheel rim and a spider and holding the spider inside the wheel rim. The wheel rim and the spider are positioned in a high capacity forming machine. At least one of a portion of the wheel rim located adjacent an outer periphery of the spider and a portion of the outer periphery of the spider is permanently deformed towards the other of the wheel rim and the spider thereby securing the wheel rim to the spider. An apparatus for securing the wheel rim to the spider includes a bottom die, a bottom inside rim stabilizer supported on the bottom die, a spider supported on the bottom inside rim stabilizer, a top inside rim stabilizer and a wheel rim supported by the bottom rim stabilizer and the top inside rim stabilizer. A high capacity forming machine encircles the wheel rim. The high capacity forming machine includes a workpiece which at least sometimes contacts the wheel rim and an electric circuit located adjacent the workpiece.
    Type: Grant
    Filed: March 26, 1997
    Date of Patent: November 3, 1998
    Inventor: John R. Grassi
  • Patent number: 5671629
    Abstract: A device and process for hydrostatic forming is disclosed. The device for hydrostatically forming an article comprises an expandable bladder for shaping the article; a fluid for expanding the bladder; and a device for moving the fluid into the bladder for expanding the same. The fluid is heated prior to being moved into the bladder for raising the temperature of the article and lowering the yield strength of the article, thereby increasing the formability of the article.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: September 30, 1997
    Inventor: Emery I. Valyi
  • Patent number: 5649438
    Abstract: A method and apparatus using pneumatic pressure and reduced, controlled clamping pressure to provide reliable, high speed pneumatic forming of thin foil workpieces at ambient temperatures without lubricants or cull plates. Forming elements are provided which incorporate a combination of surfaces and features which enable the reduced, controlled net clamping pressures for forming thin foil workpieces, and control of material slip during forming. Thin foil workpieces formed therewith have reduced incidence of tearing and wrinkling of the foil material. The method is capable of fast cycle times and produces minimal waste.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: July 22, 1997
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventors: Herbert L. Hall, Jr., Margaret M. Woodside, Stanley J. Rusek, Jr.
  • Patent number: 5638724
    Abstract: A method of producing a ceramic die for use in superplastic forming includes designing a free standing generally block-shaped ceramic monolithic die base with a bottom surface on which the die rests, and a top surface, opposite to the bottom surface, in which a forming cavity is located and which is surrounded by a contact surface. The forming cavity is shaped like the desired shape of sheet metal parts to be formed by superplastic forming in the die. A die lid is designed having a horizontal cross sectional shape and size approximately equal to the die base, and having a contact surface corresponding in size and contour to the die base contact surface, so that the lid may be placed on the base with the contact surfaces aligning and in contact.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: June 17, 1997
    Assignee: The Boeing Company
    Inventor: Daniel G. Sanders
  • Patent number: 5540075
    Abstract: A method is provided for releasing a thin foil workpiece from adherence with a resilient surface to which it adheres due to compression occurring in a forming operation. The method includes the steps of applying pneumatic pressure greater than ambient pressure between the first forming element and the workpiece while the workpiece remains held by compression. Thereafter, a second surface of a second forming element is separated from contact with the thin foil workpiece, removing compression, and rapid or shock release of the thin foil workpiece from its adherence to the resilient surface ensues. An alternative method is further provided.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: July 30, 1996
    Assignee: Owens-Corning Fiberglas Technology, Inc.
    Inventor: Herbert L. Hall, Jr.