Mitsubishi Electric Corporation

Mitsubishi Chemical Corporation

Disco Corporation

Yamazaki Mazak Corporation

Tomoya Fujita

Kotaro Nagaoka

Goh Sato

Tatsuya Ito

Chizuko Furo

Takahiro Saka

Masayuki Uematsu

Toshiaki Kimata

Masahiro Ozawa

Norihito Sakai

Toshihiro Azuma

Yukihiro Iuchi

Kazutoshi Tsuji

Hiroshi Nomura

Hidetoshi Ikeda

Kentaro Mori

Takashi Yamauchi

Hiroyuki Sekiguchi

Hiroyuki Kinoshita

Nobuhiro Shinohara

Atsushi Hori

Akihiko Imagi

Hiroyasu Negishi

Takeshi Tsuda

Akira Iseki

Ryohei Kobayashi

Junji Matsuno

Yuichi Kitazumi

Takeshi Kubo

Takuya Hirao

Kohei Hibino

A numerical controller includes: a model holding unit that holds a machine model, the machine model being a model that simulates deformation of a mechanical structure accompanying motion of the mechanical structure in axial directions and representing an error amount as an amount of displacement of a tool; a machining error estimation unit that estimates an error direction and the error amount in the error direction on the basis of axis data that is data on drive of a drive mechanism and the machine model, the error direction being a direction in which displacement of the tool occurs among the axial directions; and a correction amount arithmetic unit that selects one or more of the axes subject to correction, and performs arithmetic to find a correction amount used for correction of a command to be output to the drive mechanism for the axis selected.

Numerical controller, numerical control machine tool, machining program generation device, and machining program generation method

A problem to be solved of the present invention is to provide a diverting agent which gradually dissolves in water. The present invention relates to a diverting agent containing a polyvinyl alcohol-based resin and a method of filling a fracture using the diverting agent.

Diverting agent and method of filling fracture in well using the same

The present invention provides an oil recovery agent which has a property of improving fluidity by reducing viscosity of oil (viscosity reduction properties) and a property of rapidly separating after being dispersed in oil (immediate separability), and which enables to recover oil rapidly. The oil recovery agent of the present invention contains a polyvinyl alcohol resin having a water contact angle of 70° or less when formed into a film.

Oil recovery agent, oil dispersion, and oil recovery method

A machine learning apparatus for learning a correction parameter used in correction of a command value that controls a motor in a motor drive system including a plurality of kinds of correction functions includes: a state observation unit that observes, as a state variable, each of a feature calculated on the basis of drive data and the kind of any of the correction functions of the motor drive system and the correction parameter; and a learning unit that learns the correction parameter for each of the correction functions according to a training data set created on the basis of the state variable.

Machine learning correction parameter adjustment apparatus and method for use with a motor drive control system

A cutting apparatus includes a chuck table for holding a workpiece thereon, and a cutting unit for cutting the workpiece held on the chuck table. The cutting unit includes a spindle, a mount base fixed to a distal end of the spindle and having an annular coupling face extending around an axis of the spindle and external threads on a distal end portion of the mount base, a ring-shaped ring mount coupled to the coupling face of the mount base and having an annular support surface supporting a surface of an annular base of a hub blade, a coupling mechanism coupling the ring mount to the coupling face of the mount base, and a nut threaded over the external threads of the mount base.

Cutting apparatus

The diverting agent of the present invention contains resin particles of polyvinyl alcohol-based resin. The resin particles of polyvinyl alcohol-based resin are a particle mixture containing two or more types of resin particles having different particle diameters, and the diverting agent contains resin particles A of polyvinyl alcohol-based resin having a particle diameter of 1,700 &#x3bc;m or more in a range of 5 mass % to 95 mass % and resin particles B of polyvinyl alcohol-based resin having a particle diameter of 250 &#x3bc;m to 1,000 &#x3bc;m in a range of 5 mass % to 95 mass %.

Diverting agent and method of filling fracture in well using same

A processing control device controls a tool for processing a first workpiece. The processing control device includes a driving unit to drive the tool, an output unit, and a control unit to control the driving unit and the output unit. Processing information obtained by performing preliminary processing on a second workpiece before performing first processing on the first workpiece is transmitted by the control unit to the output unit and accordingly the processing information is outputted from the output unit. The control unit generates a control command for performing second processing that is performed on the first workpiece after the first processing. The control unit controls the driving unit according to the control command.

Processing control device, machine tool, and processing control method

A numerical control device includes a drive-shaft movement-amount estimation unit to estimate a first movement amount of a first object that is a target to be moved by a first drive shaft by using a first drive signal, an undriven-object movement-amount estimation unit to estimate a second movement amount of a second object in a three dimensional space, which is generated due to a drive force of the first drive shaft, by using the first drive signal, a correction-amount calculation unit to calculate a correction amount for the first drive signal on the basis of the first movement amount and the second movement amount, and a first correction-signal output unit to output a first corrected drive signal obtained by correcting the first drive signal by the correction amount to a drive unit to drive the first drive shaft.

Numerical control device

A numerical control apparatus includes: a numerical control unit that generates a command position; a drive control unit that is connected to the numerical control unit; and a signal measurement unit that is connected to the numerical control unit and the drive control unit. The drive control unit generates a command controlling a drive unit connected to a control target such that the control target follows the command position, and generates indicator signal data to be output to the numerical control unit and the signal measurement unit. The numerical control unit includes an arithmetic unit that performs processing of acquiring the indicator signal data as first indicator signal data and second indicator signal data, comparing the two indicator signal data, calculating a communication delay of the second indicator signal data with respect to the first indicator signal data, and determining input time of the measured signal.

Numerical control apparatus

A numerical control device includes: a tool-side displacement measurement unit; a workpiece-side displacement measurement unit; a drive signal measurement unit; a relative displacement calculation unit between the tool and the workpiece; a relative displacement prediction unit calculating a relative displacement predicted value from the drive signal, from a prediction model representing a relationship between the drive signal and the relative displacement; a model parameter operation unit generating prediction model parameters constituting the prediction model, from the drive signal, the relative displacement, and the predicted value; and a command value correction unit outputting a post-correction position command obtained by correcting a position command to the drive unit using the prediction model parameters. The model parameter operation unit changes the prediction model parameters to reduce a difference between the relative displacement and the predicted value.

A vibration mode determining apparatus that determines vibration mode of a machine structure of a machine including motors and that includes a vibration command generating unit that generates a vibration command for the motor; a control unit that generates a current command for the motor according to the vibration command and outputs a conversion value for a motor excitation force to a vibration mode calculating unit; a motor drive unit that receives the motor current command and drives the motor; a vibration sensor that detects vibration of the machine structure; a measurement-point information input unit that sets information about the attachment point of the vibration sensor; a vibration mode calculating unit that calculates the vibration mode using the conversion value for the motor excitation force and the output of the vibration sensor; and a vibration mode output unit that outputs the vibration mode.

Vibration mode determining apparatus

A machine motion trajectory measuring apparatus includes a three-axis acceleration sensor measuring acceleration of a motion-trajectory measurement subject and outputting the result as an acceleration sensor signal, a sensor signal separation unit separating the acceleration sensor signal into two or more frequency bands, a motor signal separation unit separating a detection position signal into the frequency bands identical to those of the sensor signal separation unit, a data calibration unit calibrating the acceleration sensor signal in each of the two or more frequency bands by using the acceleration sensor signal separated by the sensor signal separation unit and the detection position signal separated by the motor signal separation unit and obtaining a motion trajectory component in each of the two or more frequency bands, and a motion trajectory calculation unit coupling the motion trajectory components in the two or more frequency bands and outputting the result as a motion trajectory.

Machine motion trajectory measuring apparatus

A friction identification method includes: measuring a relation between a driving force and a position of a driven object; identifying a parameter of a position-dependent friction model based on a relation between a driving force and a position of the driven object; measuring a relation between a driving force and a displacement of the driven object from a position at which a motion direction is reversed; identifying a parameter of a displacement-dependent friction model; measuring a relation between a driving force and a velocity of the driven object; identifying a parameter of a velocity-dependent friction model; measuring a relation between a driving force and an acceleration of the driven object; and identifying a parameter of an acceleration-dependent friction model.

Growing community of inventors

Tokyo, Japan

Tomoya Fujita