Patents Assigned to Hitachi Metals Precision, Ltd.
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Patent number: 10442234Abstract: Provided is a booklet finishing device including: a frame; a first pressing unit and a second pressing unit which are configured to move relative to each other in a thickness direction of the booklet and configured to press the front surface and back surface of the booklet respectively; a forming roller configured to press the spine portion; and a forming roller moving unit for moving the forming roller along the spine portion. The first pressing unit includes: a first movable component; and a first guide component having a plate-shape. A surface of the first guide component facing the second pressing unit includes: a first guide surface; a first contact surface; and a first corner-forming end portion.Type: GrantFiled: July 26, 2018Date of Patent: October 15, 2019Assignees: HITACHI METALS, LTD., Hitachi Metals Precision, Ltd.Inventors: Makoto Tago, Junichi Nakao
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Publication number: 20190054751Abstract: Provided is a booklet finishing device including: a frame; a first pressing unit and a second pressing unit which are configured to move relative to each other in a thickness direction of the booklet and configured to press the front surface and back surface of the booklet respectively; a forming roller configured to press the spine portion; and a forming roller moving unit for moving the forming roller along the spine portion. The first pressing unit includes: a first movable component; and a first guide component having a plate-shape. A surface of the first guide component facing the second pressing unit includes: a first guide surface; a first contact surface; and a first corner-forming end portion.Type: ApplicationFiled: July 26, 2018Publication date: February 21, 2019Applicants: HITACHI METALS, LTD., Hitachi Metals Precision, Ltd.Inventors: Makoto TAGO, Junichi NAKAO
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Patent number: 9511502Abstract: An apparatus for cutting a sheet stack is provided. The sheet stack is composed of a plurality of sheets. The apparatus includes a cutting blade having a plate form and having a cutting edge at one side extending along a cutting width direction. The cutting blade has at the one side: a plurality of projecting blade portions having ridge lines forming edge lines capable of thrusting and sawing cutting, the projecting blade portions projecting in a cutting direction; and a straight bottom portion between adjacent projecting blade portions. Cutting of the sheet stack is performed by applying a load to the cutting blade in the cutting direction, and by reciprocating the cutting blade along the cutting width direction.Type: GrantFiled: December 6, 2012Date of Patent: December 6, 2016Assignees: HITACHI METALS PRECISION, LTD., HITACHI METALS, LTD.Inventors: Shinya Ishihara, Hiroshi Takatsuka
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Patent number: 8678769Abstract: A compressor impeller and a method of manufacturing the compressor impeller. The magnesium alloy compressor impeller as a die-cast part comprises a hub shaft part, a hub disk part having a hub surface extending from the hub shaft part in the radial direction, and a plurality of vane parts disposed on the hub surface. The impeller can be manufactured by a die-cast method in which a magnesium alloy heated to a liquidus temperature or higher is supplied into molds with cavities corresponding to the shape of the impeller for a filling time of 1 sec. or shorter, a pressure of 20 MPa or higher is applied to the magnesium alloy in the cavities, and the pressurized state is maintained for a time of 1 sec. or longer.Type: GrantFiled: February 21, 2006Date of Patent: March 25, 2014Assignees: Hitachi Metals Precision, Ltd., Hitachi Metals, Ltd.Inventors: Yasuhiro Kubota, Hirokazu Itoh, Mikio Sasaki
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Publication number: 20130145917Abstract: An apparatus for cutting a sheet stack is provided. The sheet stack is composed of a plurality of sheets. The apparatus includes a cutting blade having a plate form and having a cutting edge at one side extending along a cutting width direction. The cutting blade has at the one side: a plurality of projecting blade portions having ridge lines forming edge lines capable of thrusting and sawing cutting, the projecting blade portions projecting in a cutting direction; and a straight bottom portion between adjacent projecting blade portions. Cutting of the sheet stack is performed by applying a load to the cutting blade in the cutting direction, and by reciprocating the cutting blade along the cutting width direction.Type: ApplicationFiled: December 6, 2012Publication date: June 13, 2013Applicants: HITACHI METALS, LTD., HITACHI METALS PRECISION, LTD.Inventors: HITACHI METALS PRECISION, LTD., HITACHI METALS, LTD.
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Patent number: 8292589Abstract: A casting aluminum alloy which contains, in terms of mass %, 3.2-5.0% Cu, 0.8-3.0% Ni, 1.0-3.0% Mg, 0.05-0.20% Ti, and up to 1.0% Si, the remainder being aluminum and incidental impurities. This casting aluminum alloy is used to produce a cast compressor impeller comprising a hub part, a hub-disk part extending from the hub part in the radial directions and having a hub surface and a disk surface, and blade parts disposed on the hub surface. Compared to conventional aluminum alloys, the casting aluminum alloy has a moderate elongation and a high strength at ordinary temperature and has high strength even at high temperatures.Type: GrantFiled: June 26, 2007Date of Patent: October 23, 2012Assignees: Hitachi Metals Precision, Ltd., Hitachi Metals, Ltd.Inventor: Masaaki Koga
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Patent number: 8021117Abstract: An impeller for a supercharger cast in molds to provide excellent aerodynamic performance by eliminating parting-line corresponding parts from a hub surface and vane surfaces in each space formed of a pair of long vanes adjacent to each other an a method of manufacturing the impeller. The method comprises a step for casting the impeller in the molds. Molten metal is poured in spaces formed by radially arranging, toward a center axis, the plurality of slide molds each having a short vane-shaped bottomed groove part and a shape for the space between the pair of long vanes adjacent to each other to mold the impeller. Then, the slide molds are moved in the radial direction of the center axis while rotating for mold-releasing. Thus, the impeller for the supercharger having no parting-line corresponding parts on both the hub surface and the vane surfaces in each space formed of the pair of long vanes adjacent to each other can be provided.Type: GrantFiled: February 21, 2006Date of Patent: September 20, 2011Assignees: Hitachi Metals Precision, Ltd., Hitachi Metals, Ltd.Inventor: Yasuhiro Kubota
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Patent number: 7669637Abstract: A lost-wax cast impeller for a supercharger having no parting line on a hub surface and a blade surface in each space demarcated by pairs of long blades adjacent to each other and having excellent aerodynamic performance. A method of manufacturing the impeller involves forming a lost form pattern in substantially the same shape as the impeller, forming a mold by eliminating the lost form pattern after the lost form pattern is coated with a refractory, and pouring a molten metal in the mold for casting. In the molding step, lost material is injection-molded in a space demarcated by radially arranging, toward a center shaft, a plurality of slide molds having short blade-shaped bottomed groove parts and space shapes between the pairs of long blades adjacent to each other, and the slide molds are released by moving in the radial direction of the center shaft while rotating.Type: GrantFiled: March 30, 2005Date of Patent: March 2, 2010Assignees: Hitachi Metals Ltd., Hitachi Metals Precision, Ltd.Inventors: Yasuhiro Kubota, Hirokazu Itoh
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Publication number: 20090274560Abstract: A compressor impeller and a method of manufacturing the compressor impeller. The magnesium alloy compressor impeller as a die-cast part comprises a hub shaft part, a hub disk part having a hub surface extending from the hub shaft part in the radial direction, and a plurality of vane parts disposed on the hub surface. The impeller can be manufactured by a die-cast method in which a magnesium alloy heated to a liquidus temperature or higher is supplied into molds with cavities corresponding to the shape of the impeller for a filling time of 1 sec. or shorter, a pressure of 20 MPa or higher is applied to the magnesium alloy in the cavities, and the pressurized state is maintained for a time of 1 sec. or longer.Type: ApplicationFiled: February 21, 2006Publication date: November 5, 2009Applicant: HITACHI METALS PRECISION LTDInventors: Yasuhiro Kubota, Hirokazu Itoh, Mikio Sasaki
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Publication number: 20090252609Abstract: An impeller for a supercharger cast in molds to provide excellent aerodynamic performance by eliminating parting-line corresponding parts from a hub surface and vane surfaces in each space formed of a pair of long vanes adjacent to each other an a method of manufacturing the impeller. The method comprises a step for casting the impeller in the molds. Molten metal is poured in spaces formed by radially arranging, toward a center axis, the plurality of slide molds each having a short vane-shaped bottomed groove part and a shape for the space between the pair of long vanes adjacent to each other to mold the impeller. Then, the slide molds are moved in the radial direction of the center axis while rotating for mold-releasing. Thus, the impeller for the supercharger having no parting-line corresponding parts on both the hub surface and the vane surfaces in each space formed of the pair of long vanes adjacent to each other can be provided.Type: ApplicationFiled: February 21, 2006Publication date: October 8, 2009Applicants: HITACHI METALS PRECISION, LTD., HITACHI METALS, LTD.Inventor: Yasuhiro Kubota
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Publication number: 20090196762Abstract: A casting aluminum alloy which contains, in terms of mass %, 3.2-5.0% Cu, 0.8-3.0% Ni, 1.0-3.0% Mg, 0.05-0.20% Ti, and up to 1.0% Si, the remainder being aluminum and incidental impurities. This casting aluminum alloy is used to produce a cast compressor impeller comprising a hub part, a hub-disk part extending from the hub part in the radial directions and having a hub surface and a disk surface, and blade parts disposed on the hub surface. Compared to conventional aluminum alloys, the casting aluminum alloy has a moderate elongation and a high strength at ordinary temperature and has high strength even at high temperatures.Type: ApplicationFiled: June 26, 2007Publication date: August 6, 2009Applicants: HITACHI METALS PRECISION , LTD., HITACHI METALS , LTD.Inventor: Masaaki Koga
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Patent number: 4832908Abstract: A novel low thermal expansion cast alloy is provided. The alloy consists of, by percents by weight, 0.02 to 0.25% of C, 30.5 to 33.3% of Ni, 4.0 to 6.0% of Co, 0.005 to 0.70% of Mn, 0.005-0.50% of Si and the balance substantially of Fe, with the proviso that % C.gtoreq.3.0285-0.0936 x % Ni (% C and % Ni are weight % of C and Ni). By such composition, micro-segregation of Ni can be reduced and the Ni content range showing the low thermal expansion coefficient can be broadened to an extent of substantially enabling mass production by a casting process in place of the conventional forging or rolling process. The average thermal expansion coefficient at the temperature range from - 50 to 120.degree. C. of the cast alloy is not more than 1.5.times.10.sup.-6 /.degree.C.Type: GrantFiled: February 19, 1988Date of Patent: May 23, 1989Assignees: NEC Corporation, Hitachi Metals Precision Ltd.Inventors: Katsuhisa Ishikawa, Ryoji Yamamoto, Takayuki Tsukahara
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Patent number: 4295444Abstract: An automatic coating system for making set-up by coating a wax pattern with a refractory material, for use in a lost wax process. The system has a set-up pickup device adapted to pickup the set-ups by one from a set-up pool, a slurry dipping device for dipping the set-up in the slurry of the refractory coating material, a sanding device adapted to deposit sand to the coated set-up and a set-up taking-out device for taking the set-up out of the system. These devices are disposed on a common circle. The system further has aset-up transportation device located at the center of the circle. The transportation device has a plurality of beams extended radially outwardly to positions of the devices on the circle and supported by a shaft which is rotatable and movable up and down. Each beam has an arm which is adapted to hold the set-up. The beams of the transportation device are cyclically moved up and down and rotated back and forth to transport the set-ups from one to the next devices disposed on the circle.Type: GrantFiled: December 18, 1979Date of Patent: October 20, 1981Assignee: Hitachi Metals Precision, Ltd.Inventors: Masami Hatta, Katsumi Iwata, Masao Sasaki