Abstract: A three-dimensional deposition method and a three-dimensional object are provided. Included are: a step of supplying a powder toward an outer peripheral surface of a shaft, irradiating the powder with a laser beam, and sintering or melting and solidifying at least a part of the powder irradiated with the laser beam to form a formed layer, so as to form a three-dimensional object body in which an internal space communicates with an exterior through an opening; a step of discharging a residue such as the powder in the internal space from the opening to an exterior; and a step of emitting the laser beam toward an end surface of the opening to melt and solidify the formed layer, so as to close the opening.

Abstract: A management system is for managing a material of a three-dimensional deposition device that shapes a laminate by irradiation with a light beam and supplying of the material. The management system includes a shape data acquisition unit that acquires shape data of the laminate; a shaping condition setting unit that sets, based on the shape data, a set shaping condition as a shaping condition for shaping the laminate by the three-dimensional deposition device; a shaping simulation execution unit that executes, based on the set shaping condition, a shaping simulation for shaping the laminate with the set shaping condition; and a required material amount acquisition unit that acquires, based on an execution result of the shaping simulation, a required material amount that is an amount of the material required for shaping the laminate by the three-dimensional deposition device.

Abstract: A three-dimensional deposition device includes a deposition head provided with a powder jetting port from which powder is jetted, a light beam irradiation port from which a light beam is emitted, and a fiber connection port connected to a fiber guiding the light beam; a head moving part that moves the deposition head along a vertical direction; a base part to which the powder is jetted and the light beam is emitted from the deposition head; a base moving part that moves the base part along a first direction orthogonal to the vertical direction and a second direction orthogonal to the vertical direction and the first direction; and a rotation mechanism that is connected to the deposition head and rotates the deposition head about a rotation axis crossing the vertical direction to switch, by rotating the deposition head, between a first state and a second state.

Abstract: In the three-dimensional deposition device and the three-dimensional deposition method, included are: a powder passage and a nozzle injection opening serving as a powder supply unit that supplies powder toward an object to be processed; a laser path serving as a light irradiation unit that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam to form a formed layer; an interference information acquisition unit that acquires interference information on the object to be processed with the powder injected from the nozzle injection opening based on the shape of the object to be processed; and a controller that changes the powder passage of the powder that the nozzle injection opening supplies to the object to be processed based on the interference information acquired by the interference information acquisition unit.

Abstract: A three-dimensional deposition device and a three-dimensional deposition device method are provided. Included are: a powder passage and a nozzle injection opening that supply a powder toward a working surface of an object to be processed; a laser path that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam so as to form formed layers; a rotation table unit serving as an irradiation angle changing unit that changes an irradiation angle of the laser beam emitted from the laser path to the working surface; and a controller that controls the rotation table unit so that the irradiation angle on an overhanging side with respect to the working surface is less than 90° in a range in which the formed layers can be formed.

Abstract: A three-dimensional deposition device includes a deposition head provided with a powder jetting port and a light beam irradiation port to form a deposited body by the powder being melted and solidified; a shape measurement unit that measures a shape of the deposited body; a deposited body cooling unit that jets cooling gas to the deposited body to cool the deposited body; and a control unit. The control unit causes the shape measurement unit to measure the shape of the deposited body, determines whether to cool the deposited body based on a result of measuring the shape of the deposited body, and causes the deposited body cooling unit to jet the cooling gas to the deposited body to cool the deposited body in a case in which the cooling determination unit determines to cool the deposited body.

Abstract: A surface processing device, a surface processing method, and a three-dimensional deposition device are provided. Included are: a powder passage serving as a powder supply unit, which supplies a powder toward a working surface of an object to be processed; and a laser path serving as a light irradiation unit, which irradiates the powder before reaching the object to be processed with a light beam. An irradiation position of the light beam and an injection position of the powder on the working surface are offset.

Abstract: This machine tool control method has: a step for accepting processing content about a workpiece; a step for referring to a storage unit, which stores, for each piece of processing content, a range of set conditions regarding the movements of a machine tool for performing the processing, and specifying the range of the set conditions corresponding to the accepted processing content; and a step for determining the settings of the movements of the machine tool on the premise of the range of the specified set conditions upon accepting a processing order according to the processing content about the workpiece.

Abstract: The main spindle unit has a main spindle, a front bearing, a rear bearing, a front case for covering the front bearing, and a rear case for covering the rear bearing. The front case has a front body part for holding the front bearing and a front flange part extending radially outward from the front body part. The rear case has a rear body part for holding the rear bearing and a rear flange part extending radially outward from the rear body part. A front mounted surface, which can be brought into contact with a first mounting surface of a unit support table, is formed on the front flange part so as to face the front side thereof. A rear mounted surface, which contacts a second mounting surface of the unit support table, is formed on the rear flange part so as to face the front side thereof.

Abstract: A method of optimizing a machining simulation condition includes a step of receiving a setting condition of a machine tool at the time of performing a prescribed machining detail, a step of calculating a first machining result that is a machining result assumed when the machine tool performs machining under the received setting condition, a step of acquiring a second machining result that is a machining result when the machine tool performs machining under the received setting condition, and a step of evaluating a degree of coincidence between the first machining result and the second machining result, and repeatedly performs the calculation of the first machining result while changing the precondition of the calculation until the degree of coincidence is equal to or more than a prescribed threshold value.

Abstract: An object is to provide a machine-tool spindle cooling method and a machine tool capable of suppressing thermal deformation of a spindle while achieving energy saving. To achieve it, a machine-tool spindle cooling method is provided in which bearings (13) and a spindle rotation motor (14) that generate heat with rotation of a spindle (12) are cooled by causing a spindle cooling device (18) to supply and circulate cooled cooling oil inside a housing (11) rotatably supporting the spindle (12), the method comprising deactuating the spindle cooling device (18) to thereby stop supplying the cooling oil in a case where the number of revolutions of the spindle (12) is less than or equal to a predetermined number of revolutions and the temperatures of the bearings (13) and the spindle rotation motor (14) detected by temperature sensors (15, 16) are less than or equal to a predetermined temperature.

Abstract: Provided is a cutter for skiving that includes cutting teeth that are disposed side by side in a longitudinal direction of tooth grooves and have tooth heights set so as to increase from a downstream side toward an upstream side in a cutting direction, and cutting teeth that are disposed side by side in a longitudinal direction of cutting edge grooves and have tooth heights set so as to incrementally increase from a downstream side toward an upstream side in a rotational direction for each number M of tooth trace patterns (where M is the smallest natural number of at least 2) derived by Equation (1) below. St:Sc=M:N (1), where St is a number of the tooth grooves, Sc is a number of the cutting edge grooves, and N is a number of patterns (where N is the smallest natural number) on a cutting face.

Abstract: A transmission winding portion having a positive-polarity loop and a negative-polarity loop alternately formed so as to partially overlap with each other in the extending direction of a scale, arrangement of the positive-polarity loop and the negative-polarity loop being adjusted such that the positive-polarity loop and the negative-polarity loop on both sides with respect to the intermediate position in the longitudinal direction of the transmission winding portion are inverted; a first reception winding that covers the transmission winding portion in the width direction of the scale, that has a length, corresponding to the cycle of the cycle pattern of the transmission winding portion, and that is formed into a rectangular pattern; a second reception winding having a shape symmetrical to the first reception winding with respect to the intermediate position in the longitudinal direction of the transmission winding portion.

Abstract: The object of the present invention is to provide a grinding tool capable of continuing machining in a dry state and of being manufactured in a short time and at low cost, and a manufacturing method therefor. For said purpose, a grinding tool (10-1) for grinding a workpiece includes a threaded helical groove (12) formed on an outer circumferential surface of a cylindrical metal head portion (10b), ridgetop surfaces that result from the formation of the helical groove (12) and are formed so as to protrude with a trapezoidal cross-sectional shape, and abrasive grain surfaces (18) formed by winding an insulating resin rope in the helical groove (12) to mask the inside of the helical groove (12) and fixing abrasive grains on the ridgetop surfaces. A helix angle of the helical groove (12) with respect to an axial direction of the grinding tool (10-1) is set to be at least 80° and less than 90°.

Abstract: An abnormality-detecting device for detecting abnormalities of a tool of a machine tool comprises: an acquiring unit for acquiring multiple measured values relating to the tool as measurement data (vibration information, cutting force information, sound information, main shaft load, motor current, power value); a normal model unit for learning the measurement data acquired during normal machining by one class machine learning and creating a normal model; an abnormality-diagnosing unit for acquiring measurement data during machining after creation of the normal model while diagnosing whether said measurement data is normal or abnormal on the basis of the normal model; and a re-diagnosing unit for re-diagnosing measurement data, which has been diagnosed to be abnormal by the abnormality-diagnosing unit, by a method different from the abnormality-diagnosing unit.

Abstract: A skiving cutter includes a cutting edge portion in which a tooth trace extends in a direction inclined with respect to an axis of a base. The cutting edge portion is segmented into a plurality of segmented cutting edges by cutting edge grooves extending in a direction intersecting the tooth trace. A helix angle is different according to positions of the plurality of segmented cutting edges.

Abstract: The present invention is provided with: gear chamfering tools that perform cutting for chamfering a tooth profile ridge section of a gear to be cut; tool holding parts for holding the gear chamfering tools at one end portion thereof; substantially linear movement means which cause substantially linear movement of the other end portion opposed to the one end portion for holding the gear chamfering tools in the tool holding parts; and circular movement means for causing circular movement of an intermediate portion between the one end portion for holding the gear chamfering tools and the other end portion subjected to the substantially linear movement by the substantially linear movement means in the tool holding parts. By combining the substantially linear movement means and the circular movement means, substantially elliptical movement of tip end parts of the gear chamfering tools is achieved.

Abstract: Provided is a semiconductor device formed by performing bonding at room temperature with respect to a wafer in which bonded electrodes and insulating layers and are respectively exposed to front surfaces, including a bonding interlayer which independently exhibits non-conductivity and exhibits conductivity by being bonded to the bonded electrodes, between the front surfaces.