By Electrical Resistance Heater Within Tool Patents (Class 72/342.92)
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Patent number: 11253898Abstract: A hot-forming press (100) comprises a lower press assembly (102) and an upper press assembly (108). The lower press assembly (102) is movable along a vertical axis and comprises a lower die (106), and a lower hot-box portion (104), configured to receive the lower die (106). The upper press assembly (108) is movable along the vertical axis above the lower press assembly (102) and comprises an upper die (112), and an upper hot-box portion (110). The upper hot-box portion (110) is configured to receive the upper die (112) so that the upper die (112) is positioned opposite the lower die (106). The lower die (106) and the upper die (112) are configured to apply a forming pressure to a workpiece (114) that is received between the lower die (106) and the upper die (112). The lower hot-box portion (104) and the upper hot-box portion (110) are configured to heat the workpiece (114).Type: GrantFiled: October 18, 2018Date of Patent: February 22, 2022Assignee: The Boeing CompanyInventors: Daniel Gordon Sanders, Robert Charles Larsen, Donald Lloyd Conaway
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Patent number: 11185906Abstract: Disclosed is a forming system having a first die assembly and a second die assembly with dies having die surfaces that are configured to cooperate with each other to form a die cavity therebetween so as to receive a workpiece therein. One or both of the dies includes a heater insert member that has a serpentine groove therein for receiving a flexible heater member. The flexible heater member is configured to conform with the shape of the serpentine groove. The heater insert member is position adjacent to the die surface and provides more uniform heating of the surface to form complex 3D surfaces with tailored properties.Type: GrantFiled: August 30, 2017Date of Patent: November 30, 2021Assignee: MAGNA INIERNATIONAL INC.Inventors: Yunxin Ma, David Polsoni
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Patent number: 9682420Abstract: A forging die device is provided with an upper die 10 and a lower die 20. At least one die 10 (20) of the upper die 10 and the lower die 20 has a die holder 12 (22) which surrounds the outer periphery of the die 10 (20) and holds the die 10 (20). The die holder 12 (22) is configured to bear the radial tensile stress (tensile force) received by the die 10 (20) during forging. By this means, the die 10 (20) can be miniaturized.Type: GrantFiled: March 27, 2013Date of Patent: June 20, 2017Assignee: Kobe Steel, Ltd.Inventors: Takashi Choda, Yukihide Honda, Shigeomi Araki, Shogo Murakami, Soichiro Kojima, Yusuke Momota
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Patent number: 8887545Abstract: There is provided a forging die holder including a resistance heater capable of efficiently heating a die via the die holder when warm forging or hot forging is performed. A die holder is for holding a die used in a forging press for performing warm forging or hot forging. The die holder has heater mounting holes into which resistance heaters are inserted, sensor mounting holes into which temperature sensors are inserted, and guide portions disposed on both end portions of holder surfaces of holders for supporting back surfaces of the foregoing die to support side surfaces of the foregoing die located therebetween on both sides thereof. The heater mounting holes are formed at positions opposing the holder surfaces in aligned relation with the side surfaces of the foregoing die.Type: GrantFiled: March 31, 2011Date of Patent: November 18, 2014Assignee: Kobe Steel, Ltd.Inventors: Masami Ito, Masanori Tanahashi, Hiroyuki Nakanishi
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Patent number: 8708691Abstract: A composite fabrication apparatus which may include a first tooling die and a second tooling die movable with respect to each other; a temperature control system having induction coils disposed in thermal contact with the first tooling die and the second tooling die; a first die susceptor provided on the first tooling die and a second die susceptor provided on the second tooling die and connected to the induction coils; and a cooling system disposed in thermal contact with the first tooling die and the second tooling die. A resin transfer system delivers resin from a resin source to the tooling dies to allow resin transfer molding. A composite fabrication method is also disclosed.Type: GrantFiled: December 20, 2012Date of Patent: April 29, 2014Assignee: The Boeing CompanyInventors: Marc R. Matsen, Kim E. Peterson, William Dykstra
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Patent number: 8556619Abstract: A composite fabrication apparatus which may include a first tooling die and a second tooling die movable with respect to each other; a thermal control system having induction coils disposed in thermal contact with the first tooling die and the second tooling die; a first die susceptor provided on the first tooling die and a second die susceptor provided on the second tooling die and connected to the induction coils; and a cooling system disposed in thermal contact with the first tooling die and the second tooling die. A composite fabrication method is also disclosed.Type: GrantFiled: July 6, 2011Date of Patent: October 15, 2013Assignee: The Boeing CompanyInventors: Marc R. Matsen, Kim E. Peterson, William Dykstra
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Patent number: 8424357Abstract: A die includes upper contacts, lower contacts and conductive elements. The upper contacts are formed on an upper face of the die. The upper contacts include a non-connected upper contact and connected upper contacts. The lower contacts are formed on a lower face of the die. The lower contacts include a non-connected lower contact and connected lower contacts. Each of the conductive elements connects a related one of the connected upper contacts to a related one of the connected lower contacts.Type: GrantFiled: June 8, 2010Date of Patent: April 23, 2013Assignee: Aflash Technology Co., Ltd.Inventors: Leo Lu, Kuei-Wu Chu, Jimmy Liang
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Publication number: 20110259074Abstract: There is provided a forging die holder including a resistance heater capable of efficiently heating a die via the die holder when warm forging or hot forging is performed. A die holder is for holding a die used in a forging press for performing warm forging or hot forging. The die holder has heater mounting holes into which resistance heaters are inserted, sensor mounting holes into which temperature sensors are inserted, and guide portions disposed on both end portions of holder surfaces of holders for supporting back surfaces of the foregoing die to support side surfaces of the foregoing die located therebetween on both sides thereof. The heater mounting holes are formed at positions opposing the holder surfaces in aligned relation with the side surfaces of the foregoing die.Type: ApplicationFiled: March 31, 2011Publication date: October 27, 2011Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Masami ITO, Masanori TANAHASHI, Hiroyuki NAKANISHI
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Patent number: 7832245Abstract: A titanium sheet to be formed is heated in a sealingly closed tool by the radiation heat from the heating elements integrated into the tool to a forming temperature not exceeding 600° C., and is deformed towards a cold tool contour by the action of a non-oxidizing gaseous pressure medium introduced into the tool and heated to the hot-forming temperature, as well as by underpressure generated on the side of the workpiece facing away from the pressure medium.Type: GrantFiled: March 19, 2008Date of Patent: November 16, 2010Assignee: Rolls-Royce Deutschland Ltd & Co KGInventor: Karl Schreiber
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Patent number: 7810367Abstract: The subject matter of the present invention is a method of shaping a metallic hollow member in a shaping tool (1, 20, 50) at increased temperature and under internal pressure, said hollow member (5) protruding at one end at least from said shaping tool (1), the configuration of the tool mold and/or the shaping parameters acting onto said hollow member being selected in such a manner that said hollow member (5, 59) substantially keeps its original shape outside said tool (1, 20, 50), with said tool being heated in the region of the cavity and a tool, said tool being completely made from a homogeneous ceramic material with the component part being heated inductively, the cavity having a tribological additional coating in order to minimize friction of the component part against the wall and/or the affinity of the component part with the material of the cavity wall.Type: GrantFiled: August 23, 2006Date of Patent: October 12, 2010Inventor: Karl Kipry
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Patent number: 7654125Abstract: Metal forming apparatuses provide enhanced thermal efficiency by reducing thermal conduction from a forming tool to a shield. In one embodiment, a shield extends between a tool and a mounting plate, and is in conductive heat transfer relationship with the tool via a plurality of protuberances. In another embodiment, a shield extends between a tool and a mounting plate, and thermally insulating material separates the tool and the shield.Type: GrantFiled: February 6, 2007Date of Patent: February 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Richard H. Hammar, James G. Schroth
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Patent number: 7574884Abstract: The present invention relates to a heating and forming apparatus for sheet material and method for rapid heating and shaping of sheet material. The apparatus comprises a first and second respectively movable forming dies, with the first forming die having a forming surface and defining a cavity with the second forming die. The apparatus is adaptable to receive a sheet material positionable within the cavity. A heating mechanism is placed within the cavity to heat the sheet material. The forming surface of the first forming die is not substantially heated. A pressurization mechanism is in communication with the cavity to move the sheet material into conformity with the forming surface of the first die. An improvement in the process of stretch forming a sheet material into a product by using quick plastic forming (QPF) or superplastic forming (SPF) is provided.Type: GrantFiled: September 22, 2005Date of Patent: August 18, 2009Assignee: GM Global Technology Operations, Inc.Inventors: John E. Carsley, George L. Kilbertus, Gerald Edward Sokol, Gary A. Kruger, Paul E. Krajewski
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Patent number: 7272967Abstract: A subliner for use in a metal extrusion press, the subliner comprising an elongate annular body having an outer surface dimensioned for placement within an outer mantle, and an inner surface dimensioned to receive an inner liner. The subliner further comprises at least one heating element positioned longitudinally between the outer and inner surfaces of the elongate annular body for providing heat in at least one selected region of the subliner, in close proximity to the inner liner.Type: GrantFiled: May 19, 2005Date of Patent: September 25, 2007Inventor: Paul Robbins
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Patent number: 7159427Abstract: Apparatus for hot gas blow-forming including opposed heated and insulated tool containers, each including a tool heater plate that is adapted for attachment to a platen of a press with one or more load bearing spacers interposed between the tool heater plate and the platen. Each tool container also includes an insulation enclosure having a base portion that is interposed between the tool heater plate and the platen and further having perimeter wall portion that surrounds the tool heater plate. A perimeter seal is preferably attached to at least one of the heated and insulated tool containers and is adapted for sealing engagement with the other of the heated and insulated tool containers.Type: GrantFiled: February 27, 2004Date of Patent: January 9, 2007Assignee: General Motors CorporationInventors: James Gregory Schroth, Richard Murray Kleber, Richard Harry Hammar, Edward W. Bennett
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Patent number: 7159437Abstract: A hot forming tool is heated with multiple electrical resistance cartridge heaters. The heaters are located in the body of the tool so as to maintain the entire forming surface within a predetermined temperature range. Numerical thermal and optimization analyses direct the placement of the heaters so that when each heating element is simultaneously powered on for an identical fraction of the time, an acceptable temperature distribution will be produced within the tool at the tool operating temperature.Type: GrantFiled: October 7, 2004Date of Patent: January 9, 2007Assignee: General Motors CorporationInventors: James G. Schroth, Richard H. Hammar
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Patent number: 7066000Abstract: A tooling assembly for hot stretch-forming of a sheet metal workpiece. A forming tool is attached to a plate and includes a shell having a forming surface, and support walls that extend away from the shell, that terminate in a rearward surface of the forming tool, and that define open cells between the support walls. Heating elements are embedded within the forming tool for integral and uniform heating thereof. To limit conductive thermal losses from the forming surface, through the forming tool, and to the plate and surrounding environment, the open cells are provided in the forming tool and insulative support posts are disposed between the forming tool and the plate within deep counterbores in the rearward surface of the forming tool. To limit radiative and convective thermal losses, thermal insulation is disposed within the cells and between the forming tool and plate.Type: GrantFiled: March 10, 2004Date of Patent: June 27, 2006Assignee: General Motors CorporationInventor: Richard Harry Hammar
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Patent number: 6868709Abstract: A method of thermomechanically forming an aluminide part of a workpiece resistively heats at least a portion of the aluminide part, plastically deforms the heated portion of the aluminide part to a predetermined shape by applying pressure to the aluminide part positioned in a shaping member, and cools the aluminide part while applying pressure to maintain the aluminide part in the predetermined shape. The shaping member is movably mounted on a support base and a source of electricity provides an electrical current passing through the aluminide part for resistive heating of the part. The aluminide part can be a heater blade array for an electrically heated cigarette smoking system.Type: GrantFiled: June 13, 2002Date of Patent: March 22, 2005Assignee: Philip Morris USA Inc.Inventors: John M. Adams, Naohisa Tsukamura
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Patent number: 6810709Abstract: A heated metal forming tool including an un-heated mounting plate that is attached to a press. A tool detail is attached to the mounting plate. Insulation surrounds the tool detail to thermally isolate it from the mounting plate, and from the tool surroundings. The tool detail is heated internally by heaters disposed in zones within the tool detail. The temperature of various portions of the tool detail can be independently controlled by varying the temperature within any of the zones.Type: GrantFiled: October 11, 2002Date of Patent: November 2, 2004Assignee: General Motors CorporationInventors: Richard Harry Hammar, James Gregory Schroth
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Patent number: 6732558Abstract: A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or table for the robot or positioned at the end of robot am. The moveable gripping tool is mounted to the end of a moveable robot arm having a proximal portion also mounted to the base. The robot preferably comprises a six axis bending robot, in which the distal end of the moveable arm can move relative to the fixed gripping tool about three translational axes and three rotational axes. The gripping tools preferably incorporate force sensors which are used to determine overbends needed to get the desired final shape of the archwire. The robot may also include a resistive heating system in which current flows through the wire while the wire is held in a bent condition to heat the wire and thereby retain the bent shape of the wire.Type: GrantFiled: September 27, 2002Date of Patent: May 11, 2004Assignee: OraMetrix, Inc.Inventors: Werner Butscher, Friedrich Riemeier, Rüdger Rubbert, Thomas Weise, Rohit Sachdeva
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Patent number: 6609286Abstract: A part is manufactured from a composite material containing an aluminum alloy as a metal matrix. Blanks are prepared from a billet of the composite material, and worked on in a press, while they are held at a temperature ranging from the solidus temperature, Ta, of the aluminum alloy minus 50 (Ta−50) deg. C. to Ta deg. C. At a temperature below (Ta−50), the blanks have too high a resistance to plastic deformation to be easily worked on. At a temperature over Ta, a liquid phase is produced and makes the blanks likely to crack easily during plastic deformation.Type: GrantFiled: May 3, 2001Date of Patent: August 26, 2003Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Yasuhiro Nakao, Hiroto Shoji, Kunitoshi Sugaya, Takashi Kato, Takaharu Echigo
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Patent number: 6263718Abstract: A method is provided for ironing a cup to a selected wall thickness, using a mandrel that pushes the cup through several ironing rings that are axially aligned with the central axis of the mandrel. The method includes selecting a wall thickness, providing a resistive heater associated with at least one of the punch, the ram and the ironing rings, and controlling a gap between the punch and the ironing rings, and thus the wall thickness of the ironed can body, by setting a temperature of at least one of the punch, the ram and the ironing rings. The temperature is set by controlling electrical current in the resistive heater to provide a controlled gap between the mandrel and ironing rings, to produce a wall thickness of the ironed can body equal to the selected wall thickness when the can body is pushed through the ironing rings by the mandrel.Type: GrantFiled: January 2, 1998Date of Patent: July 24, 2001Assignee: Schmalbac Lubeca AGInventors: Dieter Buse, Willi Grandmann