Abstract: A band saw machine includes a first wheel and a second wheel arranged lower than the first wheel, the first wheel and the second wheel being configured to apply a tension to a band saw blade for tracking, a first supply unit arranged between a lowermost end of the second wheel and a workpiece cutting position along a travelling direction from the second wheel toward the first wheel in a rotary travel path of the band saw blade and configured to spray a cutting fluid in a mist or to drop the cutting fluid onto a tooth part of the band saw blade, and a second supply unit arranged between the workpiece cutting position to the second wheel and configured to pour or spray the cutting fluid or a fluid for cooling over the band saw blade.

Abstract: A tool for a press brake includes a tool main body, an attachment portion formed on a base end side of the tool main body and configured to be detachably attached to a tool installation portion of the press brake by using a tool changer, and a bending portion formed on a distal end side of the tool main body and used to bend a plate-shaped workpiece. An engagement hole having a circular cross-sectional shape to be engaged with a bar-shaped finger of the tool changer extends through the tool main body in a thickness direction. An anti-rotation bottomed depressed portion configured to receive a distal end of an anti-rotation member of the tool changer is formed in a vicinity of the engagement hole.

Abstract: In a laser cutting method, a cut slit of a welding protruding-tab configured to be bent by laser cutting along an outline of a processed part and press a peripheral surface of the processed part is laser-cut in advance in a periphery of the processed part that is cut from a workpiece, and an outline slit is formed by performing laser cutting along the outline of the processed part and a free end of the welding protruding-tab is welded to the peripheral surface of the processed part. According to the above described laser cutting method, it is possible to retain the processed part reliably and stably for a long period, and it is possible to easily separate the processed part from the workpiece with almost no trace left on the processed part.

Abstract: A punch tool with an expanded portion, a movable punch provided on a fixed punch so as to be able to move up and down in a direction along an inclined portion, and an interlocking member configured to interlock with a relative ascending and descending motion of the movable punch with respect to the fixed punch. The punch tool with an expanded portion is provided with an operation member provided on the fixed punch so as to be movable in the lateral direction, configured to move in the lateral direction by means of a moving motion of an external operation member, and including an abutting element capable of being abutted with the interlocking member, and an urging member configured to urge the operation member toward the inside in the lateral direction such that the abutting element is abutted with the interlocking member.

Abstract: When a sheet metal is sandwiched between a punch held by a punch holder and a die held by a die holder to bend the sheet metal at a set bending angle by moving the punch toward the die, a stroke calculation unit calculates a stroke of the punch for bending the sheet metal at the bending angle in consideration of a spring back amount of the bent sheet metal. A bending load calculation unit calculates a bending load required to bend the sheet metal at the bending angle. A punch deflection amount calculation unit calculates a punch deflection amount according to the bending load. A punch holder deflection amount calculation unit calculates a punch holder deflection amount according to the bending load. A depth value calculation unit calculates a depth value by adding at least the punch deflection amount and the punch holder deflection amount to the stroke.

Abstract: Different divided tools are attached to tool attachment portions using automatic tool changers in proximity to slit tools that have already been attached to tool attachment portions. The attached different divided tools are moved toward the previously attached divided tools using the automatic tool changers, and the different divided tools are caused to abut on the previously attached divided tools. In a case in which a torque of a servomotor for moving the automatic tool changers in a left-right direction has reached a setting value set in advance, the different divided tools are detected to have abutted on the previously attached divided tools, and the moving of the different divided tools is stopped.

Abstract: A control device controls a beam vibrating mechanism to vibrate a laser beam in a C-shaped vibration pattern in which a beam spot is moved from a first irradiation position at a front end in a cutting advancing direction to a second irradiation position at a rear side and displaced in an orthogonal direction to the cutting advancing direction, and is moved from the second irradiation position to a third irradiation position at a front end and displaced in the orthogonal direction to the cutting advancing direction, and movement from the first irradiation position to the third irradiation position via the second irradiation position, and movement from the third irradiation position to the first irradiation position via the second irradiation position are repeated. The control device performs control to cut the sheet metal by causing beam spots in the first to third irradiation positions to overlap one another.

Abstract: A laminate is formed by overlapping at least a part of a first member and at least a part of a second member. The first member and the second member are joined by irradiating the laminate with a laser. The first member contains aluminum. The second member contains copper. The second member includes a first main surface and a second main surface. The second main surface is an opposite surface of the first main surface. A contact portion is provided due to contact of the first main surface with the first member. The second main surface is irradiated with the laser. A temperature of the contact portion is equal to or higher than an eutectic point temperature of Al and Cu and lower than a melting point of Cu.

Abstract: A pulse generation unit generates a driving voltage signal including a pulse signal. A laser oscillation module oscillates a laser beam by carrying out, based on the driving voltage signal, a pulse oscillating operation. When the power command signal has a voltage command value corresponding to a laser power greater than a predetermined laser power during a high period, the pulse generation unit modulates, in a pulsed manner, a voltage value of the high period of the driving voltage signal so as to alternately repeat, for a preset period of time from a rising time of the high period of the driving voltage signal, a high state in which the voltage value is maintained and a low state in which the voltage value is lowered by a predetermined voltage value without being lowered to a voltage value of a low period of the driving voltage signal.

Abstract: A beam vibrating mechanism vibrates a laser beam in a parallel direction with a cutting advancing direction of a sheet metal. An amplitude amount of the laser beam is Qx, a radius of a first circular region having an area occupying 86% beam energy at a center side of total beam energy in a sectional area of the laser beam on a top surface of the sheet metal is rtop, and a radius of a second circular region having an area occupying 86% beam energy at a center side of total beam energy in a sectional area of the laser beam in a bottom surface of the sheet metal is rbottom. A calculation value Va is expressed by the expression: Va=(Qx+rtop+?{square root over (2)}×rbottom). When a standard deviation of the calculation value Va at a time of cutting sheet metals of a plurality of plate thicknesses is Vasd, a nozzle having a diameter of an opening between a minimum value obtained by 2Va?Vasd, and a maximum value obtained by 2.5 Va+Vasd is used as a nozzle attached to a machining head.

Abstract: A moving mechanism relatively moves a machining head emitting a laser beam, with respect to a sheet metal along a surface of the sheet metal. A beam vibrating mechanism vibrates the laser beam for irradiation on the sheet metal in a predetermined vibration pattern, while the machining head is relatively moved by the moving mechanism. A vibration control section controls the beam vibrating mechanism to progressively reduce an amplitude of the vibration pattern from a first position to a corner portion when the machining head moves toward the corner portion and reaches the first position before the corner portion by a predetermined distance, and progressively increase the amplitude of the vibration pattern until the machining head reaches a second position ahead of the corner portion by the predetermined distance from the corner portion, at a time of producing a product having the corner portion.

Abstract: A machining head emits a laser beam for cutting sheet metal of stainless steel. A moving mechanism moves the machining head relatively to a surface of the sheet metal. A beam vibrating mechanism vibrates a laser beam in a parallel direction with a cutting advancing direction of the sheet metal. In a machining condition database, a single specific vibration frequency at which cutting of the sheet metal is possible is set to a maximum moving velocity at which cutting of the sheet metal is possible, and a plurality of vibration frequencies from a maximum frequency to a minimum frequency at which cutting of the sheet metal is possible are set to a moving velocity more than or equal to a minimum moving velocity and less than the maximum moving velocity at which cutting of the sheet metal is possible.

Abstract: A determination part determines whether or not a shadow of an upper mold is expanded to a photodiode by laser beam projected to a light receiver side based on a light receiving state of a photodiode positioned in a vicinity of the upper mold. When it is determined that the shadow of the upper mold is expanded to the photodiode positioned in the nearest vicinity of the upper mold, the invalidation unit invalidates the photodiode. A detection unit detects a presence or absence of a foreign body between the upper mold and a lower mold based on light receiving states of the effective plurality of photodiodes during a lowering operation of an upper table.

Abstract: A ring forming step includes welding opposite ends of a band saw blade including a body part having a band shape, and a tooth part including a plurality of teeth formed on one side part of the body part, to form a ring shape. A polishing step includes polishing an inner surface, an outer surface, and an end face on a side opposite to the tooth part in the ring-shaped band saw blade subjected to the ring formation. A tip tooth tip forming step includes positioning, after the polishing step, the ring-shaped band saw blade subjected to the ring formation by use of one of the inner surface and the outer surface, and the end face as references, joining a cutting tip to tooth tips of the plurality of teeth by welding, and polishing the joined cutting tip to form a tooth tip shape.

Abstract: A laser cut-and-machined product made from a plated steel plate. A cut face of the plated steel plate is coated with plating-layer-containing metal of a top surface of the plated steel plate that is melted and/or evaporated at the time of laser cutting and machining.

Abstract: A cutting machine is provided with a machine main body and an NC device. The NC device controls the machine main body and has a tool radius compensation amount calculation unit, a machining path calculation unit, and a drive control unit. The tool radius compensation amount calculation unit generates tool radius compensation information. The machining path calculation unit generates a tool radius compensation control signal. The drive control unit generates a drive control signal. The machine main body has a machining unit and a tool path control unit. The machining unit cuts a workpiece by changing a relative position thereof with respect to the workpiece. Based on the drive control signal, the tool path control unit controls a tool path corresponding to a cutting tool and having a non-circular shape.

Abstract: A cutting processing machine (1) includes an NC device (200). The NC device (200) includes a tool radius compensation amount calculator (201), a processing trace calculator (202), and a driving controller (203). In a case where a processing condition (CP) includes cutting tool change information set with a change of a tool trace (TP) during cutting processing and set such that, in a case where the tool trace (TP) is changed, a control center point (CL) is fixed relative to a surface to be processed of a final processed product, the tool radius compensation amount calculator (201) recognizes a plurality of tool traces (TP) included in the cutting tool change information and generates tool radius compensation information (TC) that includes the plurality of tool traces (TP), positions formed with a surface to be processed (MPL), the control center point (CL), and tool radius compensation values (MVL). The processing trace calculator (202) generates a tool radius compensation control signal (TS).

Abstract: A beam irradiation unit (a collimator unit, a processing head, and a nozzle) includes a plurality of optical components, and is configured to convert a laser beam, which is divergent light, to collimated light and then to condense the light to irradiate a sheet metal. A photodetection element (a photodiode) detects intensity of reflected light reflected by an inspected optical component that is one of the plurality of optical components. A control device (an NC device) controls irradiation of a pierced hole with the laser beam as inspection light, subsequently to piercing the portion of the sheet metal to be cut to manufacture a product, and compares, with a threshold, the intensity of the reflected light detected by the photodetection element during the irradiation with the inspection light, to detect whether the inspected optical component is deteriorated, or a degree of the deterioration.

Abstract: A product transfer apparatus includes a product suction pad part having a suction cup part capable of sucking a plate-like product, a transfer base whose lower part has the product suction pad part, and a label suction part having a label pad, which is able to suck a label to be pasted to the product, and an up-down function of moving the label pad up and down between a position upper than and a position lower than the position of a front end of the suction cup part.

Abstract: A product taking-out apparatus includes a suction part to suck a plate-like metal product and ascend, a touch plate to move between a separate position and a contact position with respect to the product sucked by the suction part, and a vibrator to vibrate the touch plate.