Abstract: A detection device is for detecting a passage timing of a turbine blade. This detection device is provided with: a sensor including a magnet and a coil that is disposed at a position subject to magnetic flux generated by the magnet and is configured to detect an induced electromotive force based on a change in the magnetic flux accompanying passage of the turbine blade; and an analyzer configured to detect the passage timing of the turbine blade, on the basis of an integrated signal obtained by integrating a signal based on the induced electromotive force.

Abstract: A detection device is for detecting a passage timing of a turbine blade. This detection device is provided with: a sensor including a magnet and a coil that is disposed at a position subject to magnetic flux generated by the magnet and is configured to detect an induced electromotive force based on a change in the magnetic flux accompanying passage of the turbine blade; and an analyzer configured to detect the passage timing of the turbine blade, on the basis of an integrated signal obtained by integrating a signal based on the induced electromotive force.

Abstract: A blade vibration monitoring device includes: a rotary machine including a rotating shaft that extends along an axis, and a plurality of moving blades having moving blade bodies that extend radially outward in a radial direction from the rotating shaft, and shrouds that are provided at tips of the moving blade bodies and are in contact with each other in a circumferential direction; and a sensor that is provided on the outside of the shroud in the radial direction to face the shroud, and is configured to detect a change in an outer circumferential surface of the shroud, in which the outer circumferential surface of the shroud includes a first surface, and a second surface which is disposed to be interposed between the first surfaces from both sides in the circumferential direction, and in which a detection signal from the sensor is different from that of the first surface.

Abstract: A steam turbine rotor blade includes a protrusion portion (7) which is provided on a tip end portion of a blade body (61), on which a leading edge portion (61a) is formed, in a blade height direction and protrudes from a suction-side surface (612) toward the leading edge portion (61a) side, and a transition-region seal member which is provided so as to cover at least a portion of a base end-side surface of the protrusion portion (7) and a leading edge-side transition region, which faces the leading edge portion (61a) side, of a connection portion between the protrusion portion (7) and the suction-side surface (612), the transition-region seal member being formed of a material having a hardness higher than that of the blade body (61).

Abstract: A numerical control device for controlling a first control axis configured to operate in shorter period than reference control period based on first input command input by a first external input device, wherein a movement command data calculation processing unit is configured to calculate a plurality of the movement command data commanding movement amount of axis to be moved by the first control axis during the reference control period and write the plurality of the movement command data in a first buffer in process of calculating the movement command data.

Abstract: A steam turbine rotor blade includes a protrusion portion (7) which is provided on a tip end portion of a blade body (61), on which a leading edge portion (61a) is formed, in a blade height direction and protrudes from a suction-side surface (612) toward the leading edge portion (61a) side, and a transition-region seal member which is provided so as to cover at least a portion of a base end-side surface of the protrusion portion (7) and a leading edge-side transition region, which faces the leading edge portion (61a) side, of a connection portion between the protrusion portion (7) and the suction-side surface (612), the transition-region seal member being formed of a material having a hardness higher than that of the blade body (61).

Abstract: A multiple system numerical control device for executing multiple system control for dividing plural axes to be controlled to plural systems and controlling each system based on different machining program in parallel, wherein, the plural systems includes a normal interpolation period system configured to operate at normal interpolation period and control a first control axis, and a high speed interpolation period system configured to operate at high speed interpolation period shorter than the normal interpolation period and control a second control axis, and processing in the normal interpolation period system executed in a first interpolation processing unit, a first coordinate update processing unit, and a data management information generation unit are executed plural times in a normal interpolation period according to system ratio of the normal interpolation period and the high speed interpolation period.

Abstract: A multiple system numerical control device for executing multiple system control for dividing plural axes to be controlled to plural systems and controlling each system based on different machining program in parallel, wherein, the plural systems includes a normal interpolation period system configured to operate at normal interpolation period and control a first control axis, and a high speed interpolation period system configured to operate at high speed interpolation period shorter than the normal interpolation period and control a second control axis, and processing in the normal interpolation period system executed in a first interpolation processing unit, a first coordinate update processing unit, and a data management information generation unit are executed plural times in a normal interpolation period according to system ratio of the normal interpolation period and the high speed interpolation period.

Abstract: A numerical control device for controlling a first control axis configured to operate in shorter period than reference control period based on first input command input by a first external input device, wherein a movement command data calculation processing unit is configured to calculate a plurality of the movement command data commanding movement amount of axis to be moved by the first control axis during the reference control period and write the plurality of the movement command data in a first buffer in process of calculating the movement command data.

Abstract: The object is to provide a method and device to detect internal defect in the weld overlaid portion of erosion resistant material in the border portion between the blade profile and the shroud of a turbine blade with high accuracy by a static test method for an individual turbine blade applying a resultant pressing force, corresponding to centrifugal force and untwisting force of the turbine blade 10 in operation of the turbine, to the shroud 12 with installing the blade root 18 of the turbine blade 10 to the blade root retainer 20 and applying a force in the direction of centrifugal force on the blade root 18 from outside of the blade root retainer 20 to eliminate backlash between the blade root 18 and blade root retainer 20, retaining securely the shroud 12 on the side opposite to the portion which is applied the pressing force, and implementing simulated test of centrifugal stress in the weld-overlaid portion by applying the resultant pressing force, corresponding to centrifugal force and untwisting force

Abstract: A wire electric discharge machine capable of taper machining with an improved accuracy. A reference wire correction amount d set in advance is determined to be a proper value for a wire-diameter correction amount for a speed control plane, and adjustment amounts for adjusting the reference wire correction amount for the upper and lower surfaces of a workpiece are determined to be proportional to (1-Lu/Lm) and (1-Ll/Lm), respectively, where Lu, Lm and Ll are machining distances at the upper surface, speed control plane and lower surface, respectively. As a proportionality coefficient, a reference adjustment amount e is set in advance. Using adjustment amounts e(1-Lu/Lm) and e(1-Ll/Lm), wire-diameter correction amounts for the workpiece upper and lower surfaces are determined to be d+e(1-Lu/Lm) and d+e(1-Ll/Lm).

Abstract: A numerical controller with a machining resume function, in which time necessary to resume machining is reduced without increasing memory capacity. A program portion such as a subprogram to be skipped, which is not required to execute for restoring an internal status of the numerical controller at the time point of machining suspension is registered by number or the like. When the internal stare is restored, only if the read-out block is not the program portion to be skipped, execution is carried out without operating a machine, and the internal status including a coordinate position of the machine and the like is updated and stored. A pointer indicating a block position is also updated. If it is determined that the pointer becomes equal to a pointer value at the time point of machining suspension, and that the suspended block is reached, the internal status such as interpolation information which is stored at the machining suspension is restored, and the machining is resumed.

Abstract: A laser processing method for cutting, by laser beam, a cutting path (A0) of a workpiece having a corner (B) between a first cutting path (A1) and a second cutting path (A2) is provided. The workpiece is cut under the first cutting conditions (X) from the first cutting path to the corner, and under the second cutting conditions smaller in cutting ability than the first cutting conditions for a predetermined section (A21) on the second cutting path from the corner. The workpiece is cut under the first cutting conditions on the second cutting path after finished the predetermined section. The cutting conditions are continuously changed at the time of switching from the first cutting conditions to the second cutting conditions and/or from the second cutting conditions to the first cutting conditions. In this way, a processing defect is prevented while suppressing the delay of the cutting time at the time of cutting along the cutting path including the corner.

Abstract: A wire electric discharge machine and a wire electric discharge machining method in which a workpiece set posture is compensated for an error. After a workpiece is set and fixed on a workpiece table, an upper guide measures three or more three-dimensional positions that are not situated on one straight line on an upper surface of the workpiece, utilizing detection of contact with the upper surface. A unit normal vector is obtained, and a shift amount for shift from an originally set vertical position to a corrected position is calculated. In machining, the shift amount is added to the position to compensate for an angle error of a machined surface, and a deviation of a machined point position caused by inclination of the workpiece is collaterally compensated for. Thus, the machined shape cannot be distorted, and the workpiece set posture error can be compensated for.

Abstract: A wire electric discharge machine capable of taper machining with an improved accuracy. A reference wire correction amount d set in advance is determined to be a proper value for a wire-diameter correction amount for a speed control plane, and adjustment amounts for adjusting the reference wire correction amount for the upper and lower surfaces of a workpiece are determined to be proportional to (1-Lu/Lm) and (1-Ll/Lm), respectively, where Lu, Lm and Ll are machining distances at the upper surface, speed control plane and lower surface, respectively. As a proportionality coefficient, a reference adjustment amount e is set in advance. Using adjustment amounts e(1-Lu/Lm) and e(1-Ll/Lm), wire-diameter correction amounts for the workpiece upper and lower surfaces are determined to be d+e(1-Lu/Lm) and d+e(1-Ll/Lm).

Abstract: A wire electric discharge machine and a wire electric discharge machining method in which a workpiece set posture is compensated for an error. After a workpiece is set and fixed on a workpiece table, an upper guide measures three or more three-dimensional positions that are not situated on one straight line on an upper surface of the workpiece, utilizing detection of contact with the upper surface. A unit normal vector Nincl (Xn, Yn, Zn) is obtained, and a shift amount ?shif (?U, ?V) for shift from an originally set vertical position (U0, V0) to a corrected position (Uc, Vc) is calculated. In machining, the shift amount ?shif (?U, ?V) is added to the position (U0, V0) to compensate for an angle error of a machined surface, and a deviation of a machined point position caused by inclination of the workpiece is collaterally compensated for as required by correcting the upper and lower wire guides. Thus, the machined shape cannot be distorted, and the workpiece set posture error can be compensated for.

Abstract: A wire electric discharge machine capable of preventing a straightness error from being caused by consumption of a wire electrode, to eliminate insufficient machining. A correction angle ? is predetermined for preventing the straightness error of the workpiece due to consumption. Correction amounts d1?, d2? on a program plane and an upper surface of a workpiece, respectively, are determined based on the predetermined correction angle ?, and are added to or substracted from a predetermined offset amount depending on a wire electrode radius and an electric discharging gap, to determine corrected offset amounts d1, d2 on the program plane and the upper surface of the workpiece, respectively. Correction amounts dlo, dup for lower and upper wire guides in an offset direction are obtained based on the corrected offset amounts d1, d2, respectively, so that motion paths of upper and lower wire guides relative to the workpiece are determined.

Abstract: A wire electric discharge machine capable of preventing a straightness error from being caused by consumption of a wire electrode, to thereby eliminate insufficient machining. A correction angle &phgr; is predetermined for preventing the straightness error of the workpiece due to consumption thereof. Correction amounts d1′, d2′ on a program plane and an upper surface of a workpiece, respectively, are determined based on the predetermined correction angle &phgr;, and are added to or subtracted from a predetermined offset amount depending on a wire electrode radius and an electric discharging gap, to thereby determine corrected offset amounts d1, d2 on the program plane and the upper surface of the workpiece, respectively. Correction amounts dlo, dup for lower and upper wire guides in an offset direction are obtained based on the corrected offset amounts d1, d2, respectively, so that motion paths of upper and lower wire guides relative to the workpiece are determined.

Abstract: A table for fixing a workpiece is driven and controlled by a position control means in a CNC unit through servo motors. Approach of a press tool to the workpiece is started by a press operation control means in the CNC unit through a servo motor at the time prior to the time, at which the position control of the table is completed, by predetermined time. Afterward, the press tool is controlled according to operation data stored in a press operation storage means in the CNC unit.

Abstract: In a method of tool selection control for a punching press machine equipped with a multi-tool holder, a tool selection instruction (1) consisting of 4-digit T codes such as (T1101) associated with a first punch tool (42a) of the multi-holder (42) is read from a machining program. A holder designation code (T11XX) for designating the multi-tool holder is provided to a magazine (4), based on the upper two digits of the T code, and is converted to a target rotation position of the magazine by a first angle parameter (2). A tool designation code (TXXO1) for designating a first punch tool fitted to the designated multi-tool holder, which consists of the lower two bits of the T code, is converted to a target rotation position of the designated multi-tool holder by a second angle parameter (3).