Sumitomo Electric Industries, Ltd. is a manufacturer of electric wire and optical fiber cables. Its headquarters are in Chūō-ku, Osaka, Japan. The company's shares are listed in the first section of the Tokyo, Nagoya Stock Exchanges, and the Fukuoka Stock Exchange. In the period ending March 2013, the company reported consolidated sales of $23 billion .The company was founded in 1897 to produce copper wire for electrical uses. Sumitomo operates in five business fields: Automotive, Information & Communications, Electronics, Environment & Energy, and Industrial materials and is developing in two others: Life Sciences and Materials & Resources. It has more than 350 subsidiaries and over 200,000 employees in more than 30 countries.Sumitomo Electric has traditionally had an intensive focus on R&D to develop new products. Its technologies have been used in major projects including traffic control in Thailand, improvement of telecom networks in Nigeria, membrane technology for waste water treatment in Korea, and bridge construction in Germany.Sumitomo Electric's electrical wiring harness systems, which are used to send information and energy to automobiles, hold the second largest market share in the world. Sumitomo Electric also continues to be the leading manufacturer of composite semiconductors , which are widely used in semiconductor lasers, LEDs, and mobile telecommunications devices. The company is one of the top three manufacturers in the world of optical fiber. Wikipedia.
Sumitomo Electric Industries and Sumitomo Electric | Date: 2016-08-02
A process of installing optical components as precisely aligning optical axes thereof is disclosed. The process, which relates to an optical module having a signal port and/or a local port, and optical components optically coupling the ports with an active device having a built-in photodiode (PD), includes steps of (a) preparing a reference mirror that emulates a housing with a side to which the ports are attached, (b) aligning an optical axis of the auto-collimator with an optical axis of the reference mirror; (c) replacing the reference mirror with the housing; (d) aligning optical axes of the optical components with the optical axis of the auto-collimator; and (e) installing the optical components within the housing.
Honda Corporation and Sumitomo Electric | Date: 2016-07-29
To provide a system capable of appropriately assigning, in consideration of a state concerning increase in an arithmetic processing load required for executing each of a plurality of tasks, each task to a plurality of arithmetic processing resources. An indication value is detected which represents a degree of an arithmetic processing load required for executing each of the plurality of tasks. Whether or not the indication value satisfies a predetermined condition is determined. States or occurring events in an area concerning execution of the plurality of tasks are detected. Each of the plurality of tasks is assigned to each of the plurality of servers S1 to Sn (arithmetic processing resources) in a different order of priority depending on a difference of the detected state on a requirement that the indication value satisfies the predetermined condition.
Sumitomo Electric Industries and Sumitomo Electric | Date: 2016-10-31
Provided are a green compact from which a low-loss core can be formed, a method of manufacturing the green compact, and a core for a reactor using the green compact. Parts of outer circumferential surfaces of green compacts 41 and 42 are molded with an inner peripheral surface of a through hole 10h_(A )of a die 10A, and the other parts are molded with an outer circumferential surface of a core rod 13A that is inserted and disposed in the through hole 10h_(A). A raw-material powder P, which is a coated soft magnetic powder, is fed into compacting spaces 31 and 32 and pressurized by using a lower punch 12 (first punch) and an upper punch 11 (second punch). Then, the green compacts 41 and 42 are removed from the compacting spaces 31 and 32 by moving the die 10A with respect to the green compacts 41 and 42 without moving the core rod 13A with respect to the green compacts 41 and 42. An area that is on the outer circumferential surface of each of the green compacts 41 and 42 and that is molded with the core rod 13A does not rub against the core rod 13A, and thus a complete insulating layer is maintained in the area. Therefore, a core using the green compact 41 or 42 can reduce eddy current loss.
Sumitomo Electric Industries and Sumitomo Electric | Date: 2017-02-08
An object of the present invention is to provide a multilayered heat-recoverable article in which an adhesive layer easily flows during heat shrinkage to ensure adhesiveness with an adherend and does not flow out from a base material layer after heat shrinkage, and a wire splice and a wire harness that include a tube formed by thermally shrinking such a multilayered heat-recoverable article. The multilayered heat-recoverable article (1) according to the present invention includes a cylindrical base material layer (10), and an adhesive layer (11) formed on an inner circumferential surface of the base material layer. The adhesive layer (11) is formed of a resin composition that contains a polyamide as a main component and that does not substantially contain an inorganic filler. The resin composition is cross-linked by irradiation with ionizing radiation. A shear viscosity of the adhesive layer (11) at 150C is 300 Pas or more at a shear rate of 0.01 s^(-1) and 200 Pas or less at a shear rate of 100 s^(-1). The wire splice and the wire harness according to the present invention includes a tube formed by thermally shrinking the multilayered heat-recoverable article (11).
Sumitomo Electric | Date: 2017-03-01
A compound sintered body contains cubic boron nitride particles and binder particles. The composite sintered body contains 40 vol% or more and 80 vol% or less of the cubic boron nitride particles. The binder particles contain TiCN particles. The composite sintered body shows a first peak belonging to a (200) plane of the TiCN particles in a range in which a Bragg angle 2 is 41.7 or more and 42.6 or less in an X-ray diffraction spectrum measured using a Cu-K ray as a ray source. Assuming that a vertical axis y in the X-ray diffraction spectrum indicates diffraction intensity, and that a maximum value of a peak height of the first peak is defined as I_(max), a difference between a maximum value and a minimum value of Bragg angles 2 is 42.6 or less, the Bragg angles 2 being measured at two or more intersection points of a straight line y = I_(max)/2 and the first peak.
Murata Manufacturing Co. and Sumitomo Electric | Date: 2017-01-04
[Problem] To accurately set the orientation of a linear cutting blade when mounting a cutting tool and to reduce the production cost of a holder, the cutting tool, and the like. [Solving Means] A machine tool includes a moving device (M1 to M3) that moves a rectangular plate-shaped cutting tool T1 provided with a linear cutting blade Th in a Y-direction of a Z-direction, the Y-direction, and a Z-direction, or in a combined direction of the Y-direction and the Z-direction, the Z-direction being parallel with the axis of a main spindle 7 for holding a workpiece W, the X-direction being perpendicular to the Z-direction and determining the amount of cutting of the workpiece W, the Y-direction being perpendicular to the Z-direction and the X-direction, and a holder 25 that holds the cutting tool T1 in a state in which the orientation of the linear cutting blade Th is inclined with respect to the Z-direction when seen from the X-direction. The holder 25 has a first reference surface 26a that is in contact with a first surface Ta parallel with a linear cutting blade Th, of the side surfaces of the cutting tool T1 and is parallel with the YZ-plane or a plane tangent to the peripheral surface of the workpiece W and a second reference surface 26b that is in contact with a second surface Tb intersecting the first surface Ta. The workpiece W is cut while moving the linear cutting blade Th in the Y-direction or the combined direction.
Sumitomo Electric | Date: 2017-04-05
A cutting insert includes a first surface and a second surface each of which is polygonal and that face away from each other; a side surface that is continuous with the first surface and a side surface that is continuous with the second surface; a cutting edge formed along each of a ridge where the first surface and the side surface intersect and a ridge where the second surface and the side surface intersect; a bearing surface formed in each of a part the first surface and a part of the second surface adjacent to an insert center, the bearing surfaces disposed parallel to each other; and a recessed portion that separates the side surface that is continuous with the first surface from the side surface that is continuous with the second surface. The cutting edge includes three corner edges, a first cutting edge, and a second cutting edge, the first and second cutting edges being continuous with each other and located between each pair of the corner edges. A length of the first cutting edge is greater than that of the second cutting edge, an end portion of the first cutting edge adjacent to one of the corner edges is at a position higher than the bearing surface, and an end portion of the first cutting edge opposite to the end portion adjacent to the corner edge is at a position lower than the bearing surface. Each of the first surface, the second surface, and a cross section of the recessed portion has such a shape that outlines of the shape before and after rotation of the insert by 120 around the insert center are coincident with each other. The first surface and the second surface have the same shape, and the second cutting edge of the second surface is located at a corner at which the first cutting edge of the first surface is located.
Sumitomo Electric Industries and Sumitomo Electric | Date: 2017-03-08
Provided is a polarization state converting element including a plurality of waveplates, and a rotation mechanism that rotates the respective waveplates independently of one another around an optical axis. The waveplates are each configured by a substrate made of a material having no optical rotatory property but having birefringence, or are each made of a material having neither optical rotatory property nor birefringence, but having transparency, a function of phase delay depending on polarization being applied on a surface of each waveplate.
Sumitomo Electric | Date: 2017-03-29
An object of the present invention is to provide a printed wiring board in which conductive layers formed on two surfaces of a base layer that contains a fluororesin as a main component are reliably connected to each other through a via-hole. A printed wiring board according to an embodiment of the present invention includes a base layer containing a fluororesin as a main component, a first conductive layer stacked on one surface of the base layer, a second conductive layer stacked on the other surface of the base layer, and a via-hole that is formed along a connection hole penetrating the base layer and at least one of the first conductive layer and the second conductive layer in a thickness direction and that electrically connects the first conductive layer and the second conductive layer to each other. At least a part of an inner circumferential surface of the base layer in the connection hole has a pre-treated surface having a content ratio of oxygen atoms or nitrogen atoms of 0.2 atomic percent or more.
Sumitomo Electric | Date: 2016-02-03
Provided are: a method for manufacturing a cubic boron nitride cutting tool including a base metal and a sintered cubic boron nitride compact at a corner portion of the base metal, the method being capable of improving the accuracy of the center height to a large extent and sufficiently reducing the angle of inclination or the width of a negative rake face; and the cubic boron nitride cutting tool. The method includes grinding the sintered cubic boron nitride compact by pressing the sintered cubic boron nitride compact against an end face of a grindstone of a grinder, whose position and orientation are controllable, to form a flank face and a rake face on the sintered cubic boron nitride compact while the base metal of the cubic boron nitride cutting tool is tightly held by a chuck of the grinder. The grinding is performed in such a manner that the sintered cubic boron nitride compact is substantially ground. In the grinding to form the rake face, the rake face is formed so as to be recessed from a top face of the base metal or only a portion of the sintered cubic boron nitride compact that protrudes from a base-metal rake face is ground while the tool is continuously held by the chuck.