Abstract:
PROBLEM TO BE SOLVED: To provide a method for setting positioning accuracy and a positioning accuracy setting device, capable of satisfactorily maintaining positioning accuracy of a feeding mechanism at a degree equal to or less than a desired positioning accuracy, regardless of expansion/contraction of the feeding mechanism.SOLUTION: An operator measures positioning errors a plurality of times at five positions in a movable range of a table 201 displaced by a feeding mechanism 204 by using a machine tool 200 and an external computer device 300. The operator sets a standard deviation of the measured positioning errors as an error value by using the external computer device 300, and then sets a difference between the range of the error value and a desired error value as a correction value of an inside measuring position at the respective measuring positions, and generates correction value setting information by setting a correction value smaller than the correction value of the inside measuring position as the correction value for other four measuring positions. The operator generates a correction value table that sets the correction value on the basis of correction value setting information in a plurality of correction sections set in the movable range of the table 201, by using the machine tool 200.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and an apparatus for multifunctional machining control of a laser beam machine capable of freely performing the machining-control of various kinds of patterns on a surface of a workpiece such as a flat surface of a flat plate workpiece and a thick workpiece or a gentle three-dimensional surface. SOLUTION: The femtosecond laser beam LO of the linear polarization emitted from a femtsecond laser generator 10 is the laser beam which is intermittently applied by the opening/closing control by a shutter ST. The laser beam is condensed by a condensing lens R3 via any one of a homogenizer H1 for periodic grooves, a homogenizer H2 for dimple machining and a homogenizer H3 for mix-machining which are change-selected by a changing means HD. The laser beam is applied to a surface W1 of a flat workpiece W mounted on a workpiece moving unit 50 capable of performing the rotational drive and the three-dimensional movement. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a microperiodic groove observation method and a device and a machining observation method and a device, capable of accurately measuring and machining-measuring a groove gap between microperiodic grooves. SOLUTION: When the groove gap in microperiodic groove M1 is observed with a surface machined by a femtosecond laser machining apparatus, the microperiodic groove observation method observes, in terms of vision or data, the wavelength λ of a measurement laser incident on the micro periodic groove M1 in the vertical surface direction or an arbitrary oblique direction; a diffraction angle β of the diffracted light L2 of the measurement laser, a measurement order m of a light receiver 20 catching the diffracted light at the diffraction angle; and the groove gap d by arranging the light receiver 20 at the measurement order m, obtained by a theoretical expression d(sinα±sinβ)=mλ related to the groove gap d of the microperiodic groove M1. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a wire gauze welding method in which welding is surely performed, in a posture with the shape of a wire gauze maintained in spite of a slight gap between the intersections of the wire gauze and a plate surface, in the joining method of sticking the rear face of the wire gauze to the surface of a sheet-like flat plate by laser beam welding. SOLUTION: This is the wire gauze welding method by laser beam welding, in a manner that a metallic foil 3 is placed on the surface 1A of the plate 1 to be the base body for welding, with the wire gauze body 5 placed on the surface of the metallic foil, and that the surface of the wire gauze body is irradiated with a laser beam L, thereby joining by fusion the intersections 5A of the wire gauze body 5, the metallic foil 3 and the plate surface 1A. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for welding different materials, which method can very tightly join a molten ferrous material to an aluminum material by a wedge combination without using a flux. SOLUTION: In the method for welding different materials, the high melting point material W1 among welding materials W1, W2 having different melting points is irradiated by a laser beam 8 while adjusting the optical axis thereof. The material W2 having the low melting point is melted by the melting heat of the material W1, and both welding materials are joined by a fused junction. In this case, the flux is not used for welding boundary surfaces of both welding materials W1, W2, and the output value of the laser beam 8 on its optical axis is set such that the molten metal of the material having the high melting point breaks an intermetallic compound and is melted up to the inside of the material having the low melting point so as to form a wedge shape weld zone having an appropriate depth. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress a machine width to the minimum in relation to moving stroke of an X-axis by replacing a moving in an X-axis direction showing the machine width with a turning moving in a conventional machine tool constituted of three orthogonal axes. SOLUTION: As for an X-axis (an axis for showing the machine width) of the conventional machine tool of orthogonal three axes, a straight line axis is replaced with an axis in which a rotation driving part 15 of a link mechanism 11 and a spindle 12 are joined by the link mechanism 11 and an angle control is performed at a rotation center of the link mechanism 11. This machine tool is freely positioned by a cooperative control of the positioning by the turning and the positioning of a Y-axis. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a laser welding system where, prior to butt welding of a pair of members to be welded in a welding process, the edge faces of the members are subjected to grinding so that the precision of the edge faces is improved and the welding precision is also improved. SOLUTION: The laser welding head 200 is provided with a grinding means 300 of grinding both butt edge faces 10A and 11A of the pair of members to be welded. In the grinding means, the tip of a rotary shaft is mounted with a rotary grindstone 305 or a rotary cutting edge, and further the grinding means is arranged at a suitable place in the laser welding head movably forwards and backwards, and moves forwards from a waiting position (b) to a grinding position (a) on grinding both butt edge faces of the pair of members to be welded. COPYRIGHT: (C)2004,JPO&NCIPI