Patents by Inventor Shigetoshi Kondoh
Shigetoshi Kondoh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6616511Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: June 5, 2001Date of Patent: September 9, 2003Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 6585558Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: August 18, 1999Date of Patent: July 1, 2003Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 6450861Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: July 27, 2001Date of Patent: September 17, 2002Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 6389871Abstract: A slab sizing press, of which the mechanism is stable and the construction is simple and the maintainability is excellent, comprises a crank shaft, an arm rotatably mounted on the crank shaft, an outer block transmitting a load to and from the arm, an inner block provided so that a distance from the outer block is adjustable and a die is mounted on the inner block. A first rolling element, for example, a flat plate is provided on one side of a load transmission portion between the arm and the outer block, a second rolling element, for example, a rocker plate is provided on the other side of the load transmission portion, and the load is transmitted by rolling contact between them. As means for stopping slip of the rolling contact surfaces of the rolling element, sector gears meshing with each other are provided on both sides of the arm and outer block, and at least one of the gears is movably supported by a pin.Type: GrantFiled: May 5, 2000Date of Patent: May 21, 2002Assignee: Hitachi, Ltd.Inventors: Akihiro Yamamoto, Shigetoshi Kondoh
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Publication number: 20020009950Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: ApplicationFiled: July 27, 2001Publication date: January 24, 2002Applicant: Hitachi Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 6306007Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: January 26, 1999Date of Patent: October 23, 2001Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Publication number: 20010029153Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: ApplicationFiled: June 5, 2001Publication date: October 11, 2001Applicant: Hitachi Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 6283823Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: August 18, 1999Date of Patent: September 4, 2001Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 5954565Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: January 24, 1996Date of Patent: September 21, 1999Assignee: Hitachi Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa
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Patent number: 5945595Abstract: An online roll profile measuring system for measuring a roll profile during rolling without the effect of an error caused by the change in rolling condition. The system includes a roll grinder unit and a grinding wheel traversing device. The roll grinder unit has a rotary grinding wheel positioned opposite to a work roll for grinding the work roll, a grinding wheel driving device for rotating the rotary grinding wheel, and a grinding wheel feeding device for pressing the rotary grinding wheel to the work roll. The grinding wheel traversing device moves the roll grinder unit in the axial direction of the work roll relative to a guide rail frame fixed on a housing holding the work roll. A roll profile is calculated, simultaneously with grinding of the work roll using the rotary grinding wheel, on the basis of movement amounts of the grinding wheel feeding device and the grinding wheel traversing device.Type: GrantFiled: September 15, 1997Date of Patent: August 31, 1999Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh
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Patent number: 5562525Abstract: A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an abrasive layer of the grinding wheel and having an elastically deforming function is deflected to absorb the vibration energy. The contact force between the abrasive layer and the mill roll is measured for determining a profile of the mill roll. The mill roll can be thereby ground into a target profile while absorbing the vibration transmitted from the mill roll and measuring the profile of the mill roll, without causing any chattering marks.Type: GrantFiled: June 3, 1993Date of Patent: October 8, 1996Assignee: Hitachi, Ltd.Inventors: Shigeru Mori, Shigetoshi Kondoh, Tadashi Nishino, Yasutsugu Yoshimura, Yasuharu Imagawa, Hiroyuki Shiraiwa