Abstract:
PROBLEM TO BE SOLVED: To provide a technique for improving strength of jointing resin filled in a gap and a core while restraining an eddy current in a reactor having a split core.SOLUTION: A reactor 100 disclosed in this specification comprises a core and a coil 8. The core is split into at least two partial cores 2a, 2b. At least the two partial cores 2a, 2b are opposed to each other across a gap, and end faces of the partial cores 2a, 2b faced to the gap are coated with resin 42. The coil 8 is wound around the core. Plural dot-like bumps, or linear grooves not crossing with the other grooves are formed on the end faces of the partial cores 2a, 2b. By forming the plural bumps or grooves, the resin 42 enters into the bumps or grooves, so as to improve strength of jointing the resin 42 and the end faces of the metallic partial cores 2a, 2b. Even when the bumps or grooves are conducted, a conduction face is limited to a dot-like or linear range, and therefore, an eddy current can be restrained.
Abstract:
PROBLEM TO BE SOLVED: To provide a laser beam machining method in which a back wall can be repaired during laser beam machining, to provide a manufacturing method of a fuel injection valve using this laser beam machining method, and to provide a laser beam machining apparatus and the fuel injection valve. SOLUTION: When a laser beam L1 is emitted to an outer wall machining part 21a of a nozzle 11 to penetrate from the outer wall machining part 21a through an inner wall machining part 21b, supply of a powdery repair material P starts from a supply nozzle 31 into the nozzle 11. The laser beam L2, which is emitted into the nozzle 11 by passing through the through-hole 21 formed from the outer wall machining part 21a of the nozzle 11 to the inner wall machining part 21b, is emitted to the opposite part 22a of the inner wall facing the through-hole 21 of the inner wall in the nozzle 11 to cause a scratch 22. The scratch 22 is repaired by the emission of the laser beam L2 to the opposite part 22a of the inner wall and by the supply of the repair material P. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a laser beam machining apparatus and method in which spherical aberration of a convergent lens can be suppressed small while a laser beam is efficiently used. SOLUTION: The laser beam machining apparatus 10 includes a lens unit 20 as a laser shaping means in which laser beams L are shaped annularly around the optical axis A by refracting all the laser beams L from a laser light source 12. The annular laser C shaped by the lens unit 20 is focused at one point by a convergent lens 23, with machining performed on a workpiece W. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an optical fiber laser capable of highly efficiently conducting a side excitation of a double clad fiber. SOLUTION: The optical fiber laser includes an optical fiber 21 having clads 23 in the periphery of a core 22 with rare-earth element added, and an excitation light source for entering the excitation light from the side surface of the optical fiber 21. The optical fiber 21 has a concavo-convex shape along the outer circumferential part of the clad 23 in a longitudinal direction, and the clads 23 are winded and focussed as their sides mutually contact. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cladding method and apparatus that, in a pre-treatment of cladding process, eliminate liquid such as oils and water infiltrated deep into a workpiece by capillary phenomenon and that prevent defects such as a gas defect or a crack into a cladding layer, without employing complicated equipment or method. SOLUTION: Before a cladding process 40 in which each valve seat of a cylinder head is overlaid by irradiation of a laser beam, a drying process 30 is provided in which the cylinder head is dried inside by leaving it in the air for a time (15 minutes or longer) required for evaporating the liquid infiltrated inside. As a result, the liquid infiltrated deep into the cylinder head by capillary phenomenon can be eliminated, thereby preventing the defects such as a gas defect or a crack into the cladding layer. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a reliable system for controlling incidental material for article transportation capable of preventing a trouble in article transportation due to stock shortage of the incidental material for article transportation, while restricting costs and labor when introducing the same. SOLUTION: The system 100 for controlling incidental material for article transportation is provided with a data base 21, planned arrival/delivery number input means 31, 32, 33 and 34 to input the number of planned arrival and the number of planned delivery of the incidental material for article transportation in each of stations to a database 21, an estimated number of stock computing means for computing the estimated number of stock of the incidental material for article transportation in each of the stations, a stock shortage occurrence estimating means for estimating existence of stock shortage of the incidental material for article transportation in each of the stations, an estimated number of stock shortage computing means for computing the estimated number of stock shortage of the incidental material for article transportation in the stock shortage estimated station, a stock transportation possible station detecting means for detecting a stock transportation possible station, and an informing means for informing the stock transportation possible station so as to transport excessive incidental material for article transportation to the stock shortage estimated station. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve the problem of a defect in blow holes generated by the ionization of nitrogen in the air even in the case remote welding is performed using a laser beam having a long focus. SOLUTION: A laser beam 7 introduced from a laser oscillator 3 is emitted to the surface of the part to be welded by a scanning means 5. In this case, the laser beam 7 is branched into the first branched beam 8 and the second branched beam 9, and further, the first branched beam 8 and the second branched beam 9 are condensed on the same emitting position, and are emitted. As the penetration quantity required for welding is secured, the energy density of the laser beam passing through the atmosphere in the upper part of a molten pond 13 is reduced, so as to suppress the electrolytic dissociation of nitrogen. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To cool a surface emitting laser device intensively, using an inexpensive material, to reduce heat resistance and improve light-emitting efficiency to enable the device to make large output. SOLUTION: The double-side cooling surface emitting laser device has a surface emitting semiconductor laser element 102 which is in contact with an electrode on the laser-emitting side, the electrode having apertures 101 having a shape almost equal to or slightly larger than the section of emitted laser beams, and is in contact with a radiation board 104 on the non-laser-emitting side. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To solve a problem that the direction of a polarized wave of an ejected laser beam is not settled in a surface-emitting semiconductor laser utilizing a diffraction grating. SOLUTION: The surface-emitting semiconductor laser device is provided with a lamination structure wherein an active layer 26 is formed between a pair of a lower clad layer 24 and an upper clad layer 28. The diffraction grating 32 is formed on the upper clad layer 28. The diffraction grating 32 is has a bearing range constituted of the diffraction grating 32 in which a distance from a center to the diffraction grating 32 is uniform. Further, the diffraction grating 32 has the other bearing range having a distance (the diffraction grating is not formed, and therefore, the distance is substantially infinity) different from the uniform distance. The bearing range is a region 32a wherein ring opening regions of a plurality of the diffraction gratings 32 coincide along the peripheral direction from the center of the diffraction gratings 32. COPYRIGHT: (C)2006,JPO&NCIPI