Sumitomo Electric Industries Patente

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A cutting tool according to an embodiment of the present disclosure includes a body portion disposed in a machining space of a machine tool, a sensor provided in the body portion, a wireless communication circuit configured to transmit an output of the sensor, and a first power reception antenna circuit configured to receive a power supplying radio wave transmitted from a power transmission antenna provided in the machining space and to output electric power.

A cemented carbide comprising a plurality of tungsten carbide particles and a binder phase, wherein the cemented carbide comprises a total of 80% by volume or more of the tungsten carbide particles and the binder phase, the cemented carbide comprises 0.1% by volume or more and 20% by volume or less of the binder phase, the cemented carbide comprises at least one first element selected from the group consisting of titanium, tantalum, niobium, zirconium, cerium, yttrium, and boron, the cemented carbide comprises a total of 0.01 atomic % or more and 20 atomic % or less of the first element, and the binder phase comprises 50% by mass or more of cobalt, and wherein in a first graph showing results obtained by carrying out line analysis by using an energy dispersive X-ray spectrometer attached to a transmission electron microscope along a first direction going from the binder phase to the tungsten carbide particles adjacent to each other, in a coordinate system where an X axis is a distance from a position at which cobalt exhibits a maximum intensity, and a Y axis is a normalized intensity, a maximum peak M of each of the first element is present between a peak W1 of tungsten closest to an origin and a further peak W2 of tungsten closest to the peak W1, a ratio IB/IA of an intensity IB to a maximum peak intensity IA of the maximum peak M is more than 0.5 in each of the first element, and the intensity IB is an intensity of the first element at a distance P2, which is a distance of 0.2 nm from a distance P1 at the maximum peak intensity IA toward an opposite side of the origin.

A holding member (30) includes: a front end surface (31) that faces, in a first direction, an inner wall surface (201) of the interior of an optical connector ferrule; a rear end surface (32) that is disposed on a side opposite the front end surface in the first direction; a bottom surface (34) that contacts, in a second direction, a bottom wall surface (202) of the interior of the optical connector ferrule; a plurality of holding parts (37) that extend along the first direction between the front end surface and the rear end surface, are arranged along a third direction, and can each hold one of a plurality of optical fibers; and a stopper (40) that is formed on the surface of the holding member and maintains a distance in the first direction between the front end surface and the inner wall surface within a predetermined range when tip portions (14) of a plurality of optical fibers (10) extending from the holding member are respectively inserted into a plurality of insertion holes (24) in the first direction.

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An optical fiber ribbon includes a first multicore fiber having a plurality of first cores, a second multicore fiber arranged in parallel with the first multicore fiber, and a coating member. The coating member includes a first coating portion covering the first multicore fiber and a second coating portion covering the second multicore fiber. A first light-irradiated surface having a width larger than the diameter of the first core is provided in at least one region where a virtual line passing through at least two or more of first cores among the plurality of first cores or a virtual line passing through the center of the first multicore fiber intersects with the outer circumference of the first coating portion. The first light-irradiated surface includes a curved surface having a radius of curvature of 0.5 mm or more or a flat surface.

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An optical communication system includes: an earth station device; and a satellite station device configured to perform a relay process of relaying information that is transmitted and received between a communication terminal and the earth station device. In the relay process, the satellite station device performs information transmission with the communication terminal, using RF (Radio Frequency) signals, and performs information transmission with the earth station device, using optical signals including analog signals.

An optical fiber ribbon includes a plurality of multicore fibers each having a plurality of cores and cladding covering the plurality of cores, and a coating member at least partially covering the plurality of multicore fibers. In at least one multicore fiber among the plurality of multicore fibers, the plurality of cores is eight or more cores, and is arranged to be line-symmetric with respect to a reference line passing through a fiber center in a cross section of the at least one multicore fiber. Among the plurality of cores, the distance between the pair of adjustment cores located on the reference line and farthest from each other is larger than the maximum radius which is the distance between the fiber center and the outermost core farthest from the fiber center.

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A cutting system according to an embodiment of the present disclosure comprises: a cutting tool that includes a body part disposed in a machining space of a machine tool, a sensor provided to the body part, and a wireless transmission unit for transmitting detection information indicating an output of the sensor; and a power feeding device that feeds power to the cutting tool. The power feeding device comprises: a power transmission antenna provided in the machining space; and a controller for controlling power feeding performed by the power transmission antenna. The cutting tool further includes a power reception antenna circuit for receiving power wirelessly transmitted from the power transmission antenna.

A processing system includes: a cutting tool; a sensor; and a processing unit. The sensor measures a physical quantity indicating a state regarding loading on the cutting tool during a cutting process. Based on measurement results from the sensor at a plurality of measurement time points, the processing unit creates a graph including a plurality of plots each indicating data regarding the loading at a corresponding one of the measurement time points, and detects a state of the cutting process using the cutting tool, based on an area occupied by the plurality of plots in the created graph.

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