Okuma Corporation

US Patent 11125608 Frequency identifying device

US Patent 11079734 Position control system of a machine tool control drive based on motor and object position

US Patent 11156446 Position measurement method and position measurement system for object in machine tool

US Patent 11162966 Monitoring device and monitoring method of main spindle rotation speed in machine tool, and machine tool

US Patent 11169005 Sensor substrate for electromagnetic-induction type position sensor and method of manufacturing sensor substrate

US Patent 11169512 Operation monitoring device and a control program therefor

US Patent 7129665 Control apparatus for feed driving system

US Patent 7148646 Method for controlling parallel kinematic mechanism machine and control device therefor

US Patent 7151336 Rotor of reluctance motor

US Patent 7154198 Linear motor

US Patent 7167772 Machining time calculating apparatus

US Patent 7229395 Cover structure of a machine tool

US Patent 7254770 Sensor apparatus and monitoring method of control system using detected data from sensor apparatus

US Patent 7266903 Method for correcting thermal displacement in a machine tool

US Patent 7273335 Machine tool

US Patent 7352294 Absolute position detector

US Patent 7374378 Dust prevention mechanism of spindle device

US Patent 7485082 Tool changer and machine tool equipped with the tool changer

US Patent 7503735 Spindle structure

US Patent 7506424 Rotary tool-equipped tool rest

US Patent 7508199 Absolute encoder

US Patent 11190122 Motor driving apparatus

US Patent 7520156 Calibration method for a parallel kinematic mechanism machine

US Patent 7543307 Interface method and device having interface for circuit comprising logical operation element

US Patent 7560891 Position control apparatus

US Patent 7561927 Numerical controller which can call program described in script language

US Patent 7571669 Machining apparatus for noncircular shapes

US Patent 7573162 Linear motor

US Patent 7574324 Abnormality diagnostic method and device thereof

US Patent 7612513 Control device equipped with motor protection function

US Patent 7621031 Pallet exchanging device

US Patent 7647855 Electrically-operated chuck opening-closing device

US Patent 7659714 Abnormality detection apparatus for rotary type absolute encoder

US Patent 7673298 Software object verification method for real time system

US Patent 7676338 Method for detecting abnormality of temperature sensor in machine tool

US Patent 7689300 Numerical control unit

US Patent 7706922 Method for controlling parallel kinematic mechanism machine and control apparatus therefor

US Patent 7711508 Position detector

US Patent 7750592 Axis-of-rotation position control device

US Patent 7766541 Method for detecting abnormality of temperature sensor in machine tool

US Patent 7778725 Method for estimating thermal displacement in machine tool

US Patent 7792603 Program and method for generating approximate curve from approximate point group data

US Patent 7795834 Servo motor controller

US Patent 7798293 Table clamp device

US Patent 7805285 Machining simulation system

US Patent 7824105 Bearing and bearing apparatus

US Patent 7839029 Linear motor

US Patent 7862284 Pallet transfer system

US Patent 7906923 Control apparatus for reluctance type synchronous motor

US Patent 7909154 Pallet exchanger

US Patent 7913596 Turret tool rest and machine tool

US Patent 7944095 Linear motor with integrally formed stator

US Patent 7982425 Position control apparatus

US Patent 7997385 Machine tool

US Patent 8005574 Vibration suppressing method and device