Abstract:
PROBLEM TO BE SOLVED: To provide a metallic projection for preventing link plates from falling off from the ends of the pins of a link chain constituted by longitudinally and transversely connecting the link plates by means of the pins inserted into their pin pores and a method for forming the projection. SOLUTION: Metallic powder is sprinkled over the point to be formed with the projection 12 on the metallic member 10. The metallic powder is irradiated with a laser beam 20. The metallic projection is formed by the build-up of the molten metallic powder. At this time, the irradiation with the laser beam is intermittently performed. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor laser device capable of emitting a laser beam high in beam quality and power. SOLUTION: Rays emitted by a surface emitting laser chip 13, wherein surface emitting laser elements 21 are arranged in a two-dimensional array, are condensed by a condenser 15 for the generation of a high-power laser beam. By providing reflectors 16 on the plane of the condenser 15 facing the surface emitting laser elements 21, the oscillation mode of each of surface emitting laser elements 21 is selected to make it in a single mode and to make it have a high power. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a laser beam condensing unit capable of condensing a laser beam from a laser array into the beam of small diameter using less number of light guide channels. SOLUTION: The laser beam emitted from a plurality of semiconductor laser bars is condensed with an optical circuit. The outgoing beam from the optical circuit is received with a square optical fiber. A plurality of outgoing ends of the square optical fibers are laminated and inserted and fixed in a single ferrule, for bundling. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a laser beam condensing unit capable of efficiently condensing the outgoing radiation beams from a stack laser to a microregion. SOLUTION: An optical outgoing radiation section is constituted by condensing the outgoing radiation beams from a plurality of light emitting points of a layer (line) for every layer (line) of the stack laser 10 two-dimensionally arrayed with a plurality of the light emitting points by flexible sheet-shaped optical multiplexers (optical circuits) 20a to 20e and stacking the tips of the plurality of the optical multiplexers. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To make simple the check of the position between a powder supply nozzle and a valve seat in the longitudinal, lateral and vertical directions. SOLUTION: A powder supply nozzle 16 is furnished with the first passage 31 penetrating in the powder supplying direction and the second passage 32 branching from the first passage 31 and leading to a powder supply source. A measuring bar 34 as a jig is inserted through the first passage 31 and is equipped with graduations 34a to serve as creterion for judging the position over the height. In the condition that the measuring bar 34 is inserted through the first passage 31 is in contact with a valve seat 33, position checking between the nozzle 16 and valve seat 33 in the direction over the height is conducted from the positional relationship between the graduations 34a and the nozzle foremost face 16a. Also from the contacting position of the bar 34 with the valve seat 33, position checking between the nozzle 16 and valve seat 33 is made in the directions fore and aft and to the left and right.
Abstract:
PURPOSE:To make an accurate compensation even if a rotational speed changes in a repetitive control of an AC servomotor. CONSTITUTION:In a method for repetitive control of an AC servomotor 12 wherein a rotational position theta2 of an AC servomotor 12 is controlled, the rotational position theta2 of the AC servomotor 12 is detected and then a rotational position deviation DELTAtheta between an position input theta1 and the rotational position theta2 is found and the rotational position deviation DELTAtheta is stored for each rotational position theta2. An input current compensation value is calculated based on the stored rotational position deviation DELTAtheta and input current of the AC servomotor 12 is repetitively compensated for with the input current compensation value.
Abstract:
PURPOSE:To form a cladding by welding layer of high quality with low cost on the front surface of the aluminum base material by using a laser beam of low power. CONSTITUTION:At first, the front surface of aluminum base material 10 to be clad by welding is treated with an anodized aluminum and an oxidised film 10 is formed. Next, by supplying a cladding powder 16 on the oxidised film 10 and irradiating a laser beam 22 on the cladding powder, the front surface of the cladding powder and the base material is melt, the cladding by welding layer 24 is formed by cooling these.
Abstract:
PURPOSE:To form a signal pattern having high signal strength by changing magnetic properties by utilizing remelting solidification by laser beam irradiation without passing through an intensive working stage and using an allay to be converted into an amorphous one, as for a method for forming a signal pattern (such as magnetic scale) used for a non contacting type sensor detecting positions and velocities, by utilizing carbon steel and low allay steel as a substrate material. CONSTITUTION:The body to be detected of ferromagnetic steel is prepd., and on the surface, a coating film contg. at least one kind among Cr carbide, Mo carbide, Si nitride and W nitride is formed. Then, high density energy such as a laser is impressed on the surface of the body to be detected into a prescribed signal pattern shape, by which it is locally remelted and rapidly solidified to allay the above carbide, then the allayed metallic structure formed into a one of an austenite single phase or a one contg. austenite and the magnetic properties of its metallic structure is differentiated from that of the part of the body to be detected impressed with no high density energy.