Abstract: An end mill includes: at a distal end portion side in a rotation axis direction of a tool body, a plurality of cutting edges continuous from a center side to an outer peripheral side in a radial direction and adjacently arranged in a rotation direction of the tool body; gashes formed on front sides in a rotation direction of the respective cutting edges; and chip discharge flutes continuous with the gashes. The gashes are composed of distal end side depressed faces formed along a distal end side axis making an acute angle with the rotation axis and rear side depressed faces formed along a rear side axis making a smaller acute angle with the rotation axis than the distal end side axis. The distal end side depressed faces and the rear side depressed faces are formed to have shapes overlapping with one another.

Abstract: A semiconductor manufacturing apparatus includes an electrostatic chuck that attracts a workpiece including a substrate. The electrostatic chuck includes an attraction surface that includes a first region and a second region surrounding the first region; and an internal electrode superimposed on each of the first region and the second region in a first direction crossing the attraction surface. The first region has a first depth in the first direction with respect to the attraction surface and includes a first recessed portion superimposed on the internal electrode in the first direction. The second region has a second depth smaller than the first depth in the first direction with respect to the attraction surface and includes a second recessed portion superimposed on the internal electrode in the first direction.

Abstract: Provided is a battery pack including a pair of output terminals, a control unit, and a plurality of battery units, where each of the plurality of battery units includes a plurality of battery blocks connected in series, a positive electrode terminal, and a negative electrode terminal, the battery block includes one battery or a plurality of batteries connected in parallel, a fuse is connected between at least one output terminal of the pair of output terminals and a positive electrode terminal or a negative electrode terminal corresponding to the one output terminal, and the fuse is allowed to be fused by the control unit.

Abstract: The present invention provides an end mill including: a shaft-shaped end mill main body; a chip discharge groove extending from a leading end to a trailing end in an axial direction of the end mill main body; a bottom blade which is provided at a leading end portion in the axial direction of the end mill main body and has a spherical shape in which a rotation locus around the axis has a center on the axis; and an outer peripheral blade which is provided along the chip discharge groove, and in which a rotation locus around the axis is convex outward. A curvature radius of the rotation locus of the outer peripheral blade is larger than a curvature radius of the rotation locus of the bottom blade. A twist angle of the outer peripheral blade is 20° or more.

Abstract: The present invention provides an end mill including: a shaft-shaped end mill main body; a chip discharge groove extending from a leading end to a trailing end in an axial direction of the end mill main body; a bottom blade which is provided at a leading end portion in the axial direction of the end mill main body and has a spherical shape in which a rotation locus around the axis has a center on the axis; and an outer peripheral blade which is provided along the chip discharge groove, and in which a rotation locus around the axis is convex outward. A curvature radius of the rotation locus of the outer peripheral blade is larger than a curvature radius of the rotation locus of the bottom blade. A twist angle of the outer peripheral blade is 20° or more.

Abstract: Radius mill and cutting work method that includes a plurality of end cutting edges arrayed around a central axis O and a plurality of arc-shaped radius end cutting edges continuous with the end cutting edges on an outer peripheral side in a radial direction. The end cutting edge is divided into an inner peripheral side end cutting edge and an outer peripheral side end cutting edge in a radial direction. Second surfaces of the plurality of inner peripheral side end cutting edges are coupled at a part close to the axis O. A region of coupled second surfaces is continuous from a region including the axis O to outer peripheral sides of respective inner peripheral side end cutting edges in a radial direction in a strip shape. A width of the strip-shaped region gradually enlarges from axis O side to an outer peripheral side in a radial direction.

Abstract: An exchangeable tip cutting tool in which breakage of the threaded section and breakage of the thread ridges during installation of the machining head and under increased cutting load during cutting are limited and which is capable of performing machining with high efficiency; and a machining head and a holder to be used in the exchangeable tip cutting tool.

Abstract: A multi-flute endmill including a cutting edge part having multiple cutting edges and flutes formed between adjacent cutting edges in a rotation direction around the tool axis O. A rake face of each cutting edge is formed from a rake face of an end cutting edge from the tool axis O side to the outer peripheral side of a shank, an adjacent rake face of a corner R edge that forms a surface different from the rake face of the end cutting edge, and an adjacent rake face of a peripheral cutting edge that forms a surface different from the rake face of the corner R edge. A gash is formed between the rake face of the end cutting edge and a flank of an end cutting edge that is adjacent on a forward side thereof in the rotation direction R.

Abstract: Multi-flute endmill having a cutting edge rake face formed from a side of a rotation axis to a peripheral side in a radial direction, and having an end cutting edge rake face. A peripheral cutting edge rake face adjacent to the end cutting edge rake face forms a face different from the end cutting edge rake face and serves as the rake face of a corner edge. An intersection between a convex ridge line is located in a boundary between the rake faces of the end cutting edge and peripheral cutting edge. A convex ridge line is located in a boundary between the end cutting edge rake face and a bottom surface of the flute is moved into the side of the rotation axis in the radial direction with respect to a boundary between the flank face of a corner edge and the flank face of the end cutting edge.

Abstract: Radius mill and cutting work method that includes a plurality of end cutting edges arrayed around a central axis O and a plurality of arc-shaped radius end cutting edges continuous with the end cutting edges on an outer peripheral side in a radial direction. The end cutting edge is divided into an inner peripheral side end cutting edge and an outer peripheral side end cutting edge in a radial direction. Second surfaces of the plurality of inner peripheral side end cutting edges are coupled at a part close to the axis O. A region of coupled second surfaces is continuous from a region including the axis O to outer peripheral sides of respective inner peripheral side end cutting edges in a radial direction in a strip shape. A width of the strip-shaped region gradually enlarges from axis O side to an outer peripheral side in a radial direction.

Abstract: Multi-flute endmill having a cutting edge rake face formed from a side of a rotation axis to a peripheral side in a radial direction, and having an end cutting edge rake face. A peripheral cutting edge rake face adjacent to the end cutting edge rake face forms a face different from the end cutting edge rake face and serves as the rake face of a corner edge. An intersection between a convex ridge line is located in a boundary between the rake faces of the end cutting edge and peripheral cutting edge. A convex ridge line is located in a boundary between the end cutting edge rake face and a bottom surface of the flute is moved into the side of the rotation axis in the radial direction with respect to a boundary between the flank face of a corner edge and the flank face of the end cutting edge.

Abstract: Provided are: an exchangeable tip cutting tool in which breakage of the threaded section and breakage of the thread ridges during installation of the machining head and under increased cutting load during cutting are limited and which is capable of performing machining with high efficiency; and a machining head and a holder to be used in the exchangeable tip cutting tool. The flank angle (?) of the pressure flank (11) is set to be larger than the flank angle (?) of the clearance flank (12); and a holder (2, 2a) having a female threaded fastening section (8) wherein the angle of the screwing surface of the pressure flank is set to be larger than the angle of the screwing surface of the clearance flank.

Abstract: A multi-flute endmill including a cutting edge part having multiple cutting edges and flutes formed between adjacent cutting edges in a rotation direction around the tool axis O. A rake face of each cutting edge is formed from a rake face of an end cutting edge from the tool axis O side to the outer peripheral side of a shank, an adjacent rake face of a corner R edge that forms a surface different from the rake face of the end cutting edge, and an adjacent rake face of a peripheral cutting edge that forms a surface different from the rake face of the corner R edge. A gash is formed between the rake face of the end cutting edge and a flank of an end cutting edge that is adjacent on a forward side thereof in the rotation direction R.

Abstract: The present invention relates to a power amplifier device having a power amplifier, and an object of the invention is to enable efficient use of the power amplifier without causing any problems in the operation of the power amplifier.

Abstract: A battery pack is provided. In the battery pack, batteries and a circuit are completely separated. A battery block includes a battery package that can house one or more of the batteries. The circuit block includes a measurement/protection circuit that has a measurement function about use conditions or performance of the batteries or a function to protect the batteries that is housed in a circuit package wherein the battery block and the circuit block are fit in and housed inside of an outer case. The battery block and the circuit block can be independently removed and replaced from the outer case. In this regard, where a defect of the battery block or the circuit block occurs in a manufacturing process, the block with the defect can be replaced on its own. When the batteries in the battery block are deteriorated or consumed, the battery block can be replaced on its own. An electrolytic solution leaked from the batteries remains in the battery package.

Abstract: The invention is to offer such a dielectric ceramic enabling to simultaneously sinter with the low resistant conductor of Ag based metals and Cu based metals, having the excellent mechanical strength and exhibiting the excellent dielectric characteristics in the GHz zone. Mixed powders of Si: 20 to 30 weight %, B: 5 to 30 weight %, Al: 20 to 30 weight %, Ca: 10 to 20 weight %, and Zn: 10 to 20 weight % are prepared, melted, and rapidly cooled to produce glass frits. The glass frits are granulated and mixed with gahnite filler and titania filler which are inorganic filler powders. Subsequently, a binder is thrown into the powders to produce a composition of dielectric ceramic, and then is formed, followed by sintering. The mixed powders may contain at least one kind of alkali metal of Li, K and Na.

Abstract: A battery pack is provided. In the battery pack, batteries and a circuit are completely separated. A battery block includes a battery package that can house one or more of the batteries. The circuit block includes a measurement/protection circuit that has a measurement function about use conditions or performance of the batteries or a function to protect the batteries that is housed in a circuit package wherein the battery block and the circuit block are fit in and housed inside of an outer case. The battery block and the circuit block can be independently removed and replaced from the outer case. In this regard, where a defect of the battery block or the circuit block occurs in a manufacturing process, the block with the defect can be replaced on its own. When the batteries in the battery block are deteriorated or consumed, the battery block can be replaced on its own. An electrolytic solution leaked from the batteries remains in the battery package.

Abstract: The invention is to offer such a dielectric ceramic enabling to simultaneously sinter with the low resistant conductor of Ag based metals and Cu based metals, having the excellent mechanical strength and exhibiting the excellent dielectric characteristics in the GHz zone. Mixed powders of Si: 20 to 30 weight %, B: 5 to 30 weight %, Al: 20 to 30 weight %, Ca: 10 to 20 weight %, and Zn: 10 to 20 weight % are prepared, melted, and rapidly cooled to produce glass frits. The glass frits are granulated and mixed with gahnite filler and titania filler which are inorganic filler powders. Subsequently, a binder is thrown into the powders to produce a composition of dielectric ceramic, and then is formed, followed by sintering. The mixed powders may contain at least one kind of alkali metal of Li, K and Na.

Abstract: A cathode-ray tube according to the present invention is able to automatically correct a color shading caused due to a repulsion effect and the like, which occurs between electron beams. An electron gun for use with the cathode-ray tube according to the present invention includes beam apertures bored through a first electrode opposing a cathode disposed in an inline fashion. Further, beam apertures through which so-called side beams pass are bored with a predetermined inclination relative to the opposing cathodes. Consequently, an electron lens formed between the cathode and the first electrode becomes an axial-asymmetric electron lens. The curvature of this electron lens is changed in response to a drive voltage of the cathode. When this curvature is changed, the trajectories of electron beams are changed to cancel an influence caused by a repulsion effect. Thus, a color shading can be corrected automatically.

Abstract: A cathode-ray tube according to the present invention is able to automatically correct a color shading caused due to a repulsion effect and the like, which occurs between electron beams. An electron gun for use with the cathode-ray tube according to the present invention includes beam apertures bored through a first electrode opposing a cathode disposed in an inline fashion. Further, beam apertures through which so-called side beams pass are bored with a predetermined inclination relative to the opposing cathodes. Consequently, an electron lens formed between the cathode and the first electrode becomes an axial asymmetric electron lens. A curvature of this electron lens is changed in response to a drive voltage of the cathode. When this curvature is changed, trajectories of electron beams are changed to cancel an influence caused by a repulsion effect. Thus, a color shading can be corrected automatically.