Abstract: The invention provides a system attached to a laser beam machine for supporting failure prognosis, warning and restoration operation by monitoring the status of the machine. A laser beam machine 1 has a pallet 20 supported on a bed 10, and subjects a work W1 to laser processing. The management unit 100 attached to the machine 1 is connected via an internet connection to a server 2 at a service center, and also transmits the status of the machine to a cellular phone 3 or a personal computer 4 of an administrator. The management unit 100 has a large image display unit 200, through which the status of the machine is output via messages and audio so as to notify the operator of necessary restoration operations. The procedures of restoration operations are output via image and message, supporting the operation of the operator.

Abstract: The invention provides a laser processing system in which a heat density accumulated in a base material is computed based on nesting data in order to create an NC program for preventing processing defects. Upon cutting out works W1 through W9 from a base material B1, a nesting area N1 is defined as a sum of the lengths of lines S1 through S4, which is defined as NG1. A laser processing length dimension of the works W1 through W9 is computed by adding the line lengths L1 through L4 and the circumferential length C1 of a round hole and multiplying the result by nine, which is defined as LG1. The heat density HF1 is computed as HF1=LG1/NG1, and the heat density is compared with a parameter set in advance in order to determine a processing order for preventing processing defects by heat and to create a corresponding program.

Abstract: The invention provides a rotation-type changer of torches and nozzles for a laser beam machine having a movable table. The automatic tool changer 100 of a laser beam machine is equipped with a plurality of torch holders 160 and a nozzle changer 170 disposed on the magazine 150. The working head 40 moves in a Y-axis direction perpendicular to the paper plane and in a Z-axis direction. The torch holder 160 storing the torch to be exchanged is rotated along the Y-axis path line and the working head 40 is lowered to exchange the torch.

Abstract: The invention provides a hardening device with a semiconductor laser oscillator. The laser hardening device 1 has a table 20 rotating around axis C on a bed 10. A hardening head 40 that moves along axis Z is attached to a column 30 moving along axis Y orthogonal to axis C. The hardening head 40 has a semiconductor laser oscillator. A main spindle 50 of the hardening head rotates around axis B, and a laser beam is irradiated from a torch T to subject the surface of a work gripped via a chuck 22 on the table 20 to hardening. A torch automatic changer 100 has a plurality of torches T stored to the outer circumference portion of a rotating magazine, and automatically changes torches on the main spindle 50.

Abstract: The invention provides a torch changer with a large capacity for a flying optics-type laser beam machine. A table 15 of the laser beam machine is fixed, and a laser beam working head 50 moves in three axial directions. A torch changing unit 300 is disposed on a setup station 90 disposed outside the processing area at the end of the table. A torch storing device 100 stores a large number of torch holders 150 supported by forks on the outer side of a chain 130. A torch holder shifter 200 sends out the torch holder 150 positioned at a shift position towards the torch changing unit 300, where the torch attached to the working head 50 is changed.

Abstract: The invention provides a laser beam machine having a light path duct with improved dust proof property. A light path system of a laser beam machine comprises a light path duct 10 having a U-shaped cross-section with the upper end opened, and a light path 12 into which clean air is fed. Gutters 110 are disposed on both sides of the light path duct 10, and liquid 120 is filled therein. The laser beam extraction unit 50 traveling on the light path duct 10 has panels 150 disposed on both sides thereof, and a skirt portion 152 formed at the end of each panel 150 is immersed in the liquid 120, thereby forming a liquid seal.

Abstract: There are provided a method for producing a die for press brake easily and a die. Three-dimensional models of an upper die 10 and a lower die 20 are prepared based on the data of a work W10. The lower die 20 is divided into plate-shaped die elements 201 to 20n, and each element is subjected to three-dimensional laser beam machining. The die elements are fastened to complete the lower die. The upper die is also produced by the same process.

Abstract: A joint structure for directly joining a plurality of pipes is provided. A first pipe 10 has a joined end face 11 obtained by laser machining at a predetermined angle to an axis and a tenon 12 formed on a joined end face. A second pipe 20 has a joined end face 21 obtained by laser machining at a predetermined angle to an axis and a mortice 22. By fitting the tenon 12 of the first pipe 10 to the mortice 22 of the second pipe 20, a joint structure of the two pipes 10, 20 is formed. The joined end face 11 of the first pipe 10 and the joined end face 21 of the second pipe 20 are on surface contact over the entire thickness of the pipe.

Abstract: The invention provides a laser hardening method capable of preventing adjacent already-hardened layers from being annealed. In the laser hardening method of the present invention, conduits C1, C2 and C3 are processed in advance midway between pitches P1 along which a hardening nozzle 190 performs overlap hardening. After moving the nozzle 190 along a center line L3 to process a hardening layer H23, the nozzle 190 is moved in parallel for a single pitch P1 to perform hardening of a hardening layer H24. Thermal energy E1 of the laser beam LB is also irradiated toward the direction of the hardening layer H23, but it is blocked by the conduit C3 that prevents the laser beam from annealing the hardening layer H23.

Abstract: The invention provides a method for fabricating a large sheet metal product having a three-dimensional shape such as a cover of a machine tool, without performing a welding process, and a product fabricated by the same. A cover unit 1 of a machine tool is fabricated by fixing to a circumference edge portion of a cover sheet 10 edge members 110, 120, 130, 210, 220, 230, 310 and 410 via fastening members such as bolts and nuts. The cover sheet 10 and each of the edge members are formed by nesting an expansion plan based on a three-dimensional solid model data of the cover unit 1 on a sheet metal material on a laser beam machine, and subjecting the same to laser processing. At this time, various information such as bend lines and bend angles required in the post process are marked off on each component via laser processing. The components having been subjected to high-precision laser processing are subjected to necessary bending process.

Abstract: The invention provides a laser beam machine having a light path duct with improved dust proof property. A light path system 1 of a laser beam machine comprises a light path duct 10 having a U-shaped cross-section with the upper end opened, wherein the opening portion is covered by a steel belt 30. The laser beam extraction unit 50 traveling on the light path duct 10 in the direction of arrow A elevates the steel belt 30 and extracts the laser beam from the light path duct 10. The steel belt 30 has a guiding projection 32 disposed at the center thereof. The laser beam extraction unit 50 has a guide roller 64 disposed below the steel belt 30 and a guide roller 62 having a V-shaped groove 62a for engaging the projection on the steel belt 30, thereby preventing displacement of the steel belt.

Abstract: The invention provides a device for improving the positioning accuracy of a linear motor. A stator 20 is designed to have two kinds of magnets with different surface magnetism arranged alternately and at uniform intervals along the linear moving direction. A moving member 30 is disposed movably in the linear direction while maintaining a uniform distance from the stator. A detector head 50 formed integrally with the moving member 30 detects the magnetic flux of the stator 20 and sends the data to a control unit 60. The fixed laser length measuring machine 100 irradiates a laser beam LB to a target 110 attached to the moving member, and using the reflected light, measures the distance between the laser length measuring machine and the target highly accurately.

Abstract: The invention provides a device for detecting the position of a seam on a welded pipe in a three-dimensional laser beam machine for processing pipes. The three-dimensional laser beam machine has a chuck 62 for holding, rotating and axially moving a cylindrical pipe 400. A weld seam detection device 100 is equipped with a sensor head 110 provided on a laser processing main body 30. The sensor head 110 has a master lever 120 that moves along an inner wall surface 410 of the cylindrical pipe 400 and a sensor lever 140. When the cylindrical pipe 400 is rotated and the sensor lever 140 contacts the weld seam, the movement of the sensor lever 140 is detected by a micro switch 150, which sends a signal to an NC device 90 by which the weld seam position is recognized.

Abstract: The invention provides a laser hardening tool having little laser output loss. The laser hardening tool 100 condenses the irradiated beams LB1 from a semiconductor laser stack 120 via a condensing optical lens 134, and creates parallel light beams LB3 via a diverging optical lens 142. The laser beams LB4 having been bent by a first mirror 160 travels through an optical waveguide 150 having a rectangular cross-sectional shape. The laser beams LB5 having been condensed by a re-condensing optical lens 170 are irradiated through a nozzle 190 to subject a work to hardening. The number of reflections of the laser beams LB4 in the angular optical waveguide 150 is small, and thus the loss of laser output is reduced.

Abstract: The invention provides a method and an assembly jig for fixing a pipe structure unit manufactured by assembling tenons and mortises formed on end portions of pipes to a building structure. The pipe structure unit 10 comprises large-diameter pipes 20, 30, 40 and 50 and small-diameter pipes 60, 70 and 80 which are assembled on an assembly jig 100 by assembling tenons and mortises formed in advance on the ends of the pipes via laser machining. The pipes are provided with mounting portions disposed on the other ends thereof, which are used to temporarily tighten the pipes to flanges of pillars 200 and 210. A jack 130 of the assembly jig 100 is lifted to compress the gaps formed at the tenons and temporarily tightened portions, and the pipes are fully tightened in this state. If necessary, the joint portions of the pipes are welded via spot welding and the like to complete the building structure.

Abstract: The invention provides a device for improving the efficiency of operation for aligning the optical axis of mirrors disposed in an optical path for laser transmission in a laser beam machine. The laser beam LB output from a laser oscillator of a laser beam machine is transmitted via multiple mirrors M1, M2 etc. disposed in the optical path thereof to a torch. A mirror for receiving the laser beam LB from the mirror M2 is removed and a laser beam detecting device 100 is attached in replacement thereof. The laser beam LB is passed through a cross-shape target 122, a portion of which is branched and taken as image by a laser beam detecting picture element 180. The data is sent to a personal computer 200 disposed near the mirror M2 being subjected to alignment, and displayed as image data C1. The operator operates adjusting screws 71 and 72 to change the tilt angle of the mirror M2 while watching the image data C1, so as to align the optical axis of the laser beam LB.

Abstract: The invention provides a laser beam machine having a light path duct with improved dust proof property. A light path system 1 of a laser beam machine comprises a light path duct 10 having a U-shaped cross-section with the upper end opened, wherein the opening portion is covered by a steel belt 30. The laser beam extraction unit 50 traveling on the light path duct 10 in the direction of arrow A elevates the steel belt 30 and extracts the laser beam from the light path duct 10. The steel belt 30 has a guiding projection 32 disposed at the center thereof. The laser beam extraction unit 50 has a guide roller 64 disposed below the steel belt 30 and a guide roller 62 having a V-shaped groove 62a for engaging the projection on the steel belt 30, thereby preventing displacement of the steel belt.

Abstract: The invention provides a laser beam machine having a light path duct with improved dust proof property. A light path system of a laser beam machine comprises a light path duct 10 having a U-shaped cross-section with the upper end opened, and a light path 12 into which clean air is fed. Gutters 110 are disposed on both sides of the light path duct 10, and liquid 120 is filled therein. The laser beam extraction unit 50 traveling on the light path duct 10 has panels 150 disposed on both sides thereof, and a skirt portion 152 formed at the end of each panel 150 is immersed in the liquid 120, thereby forming a liquid seal.

Abstract: A reflector-mirror drive shaft controller is provided for a laser beam machine which optimizes a beam for workpiece thickness by correcting a control axis of a laser reflector-mirror of a laser beam machine. A laser beam outputted from a laser oscillator device of a laser beam machine is reflected by a reflector-mirror via an output mirror and introduced into a laser machining tool. When a machining head moves along an X axis, the reflector-mirror is moved along a U axis parallel to the X axis to keep optical path length constant. By giving an offset ? to U axis control, the incident beam diameter D to the machining lens is varied to form an optimum machining beam for workpiece thickness.

Abstract: A device is provided to remove sputtered materials adhering to a nozzle in a laser processing machine. In a laser processing, some sputtered material S1 adhering to a nozzle 65 degrades copy operations in the processing. A nozzle polishing device 600 comprises a processing head 610, and drives a processing tool 620 which may be a formed grindstone. The processing tool 620 of the formed grindstone has a processing surface 622 which is brought into contact with the nozzle 65 to remove the sputtered material S1.