Class / Patent application number | Description | Number of patent applications / Date published |
700170000 | Having particular control of a motor parameter | 19 |
20090265029 | MACHINE TOOL AND CONTROL METHOD THEREOF - An acceleration/deceleration control method of a CNC machine tool includes receiving an acceleration/deceleration timing signal and a velocity signal. The acceleration/deceleration timing signal is calculated to acquire a plurality of different first weight values and different second weight values by a first formula and a second formula. A velocity variation of the velocity signal is determined to be zero, positive or negative. The velocity signal is acquired, if the velocity variation is zero. A plurality of acceleration signals are acquired by the velocity signal multiplying each of the first weight values, if the velocity variable is positive. A plurality of deceleration signals are acquired by the velocity signal multiplying each of the second weight values, if the velocity variation is negative. The velocity signal, the acceleration signal and the deceleration signal are converted into a first driving signal, a second driving signal and a third driving signal. | 10-22-2009 |
20120016513 | FILM SUPPLYING APPARATUS - A film supplying apparatus includes: an upstream belt conveying unit and a downstream belt conveying unit that sequentially convey label formed by cutting a label-forming base material, to a label delivery position; a label detection sensor that detects the label at an upper position of the downstream belt conveying unit; an encoder attached to a take-up spindle of a label delivery apparatus; and a control unit that calculates the amount of shift in the label on the basis of a label detection signal from the label detection sensor and a pulse signal from the encoder, and controls the operation of the downstream belt conveying unit conveying the label, so as to convey the label and stop the label at the label delivery position, while modifying the amount of shift. | 01-19-2012 |
20130331977 | HOT STRIP MILL CONTROLLER - The present invention provides a method of controlling the height of a looper in an inter-stand section of a hot strip mill that overcomes the problem of looper instability due to looper inertia without the need for the controller of upstream rollers to have a reduced gain. The inter-stand section of the hot strip mill comprises a pair of upstream rollers driven by a main motor and a looper driven by a looper motor. The method comprises the steps of: calculating a desired speed trim to be applied by the main motor; estimating the inertia of the looper; calculating a torque necessary to overcome the inertia of the looper from the speed trim, the estimated inertia of the looper and a sensitivity calculated from the geometry of the looper; and controlling the main motor to apply the speed trim to the upstream rollers and controlling the looper motor to apply the calculated torque to the looper. | 12-12-2013 |
20140046477 | AUTOMATIC ON-CNC TOOL FOR MOTION ANALYSIS AND OPTIMIZATION - The invention features, in one aspect, a computerized method for measuring or improving performance of a cutting head of an automated cutting system by evaluating motor control processing of an automated motion control of the cutting head of the automated cutting system. The method includes generating one or more motor outputs for the automated cutting system for any of a cut, a trace, or a motion, the one or more motor outputs corresponding to at least a portion of a set of motor output commands. A characteristic is measured of the one or more motor outputs for the plurality of axes of the automated cutting system. The characteristic is compared with the at least a portion of the set of motor output commands to determine a performance measurement of the automated cutting system. | 02-13-2014 |
20140114462 | CHATTER VIBRATION SUPPRESSING METHOD AND MACHINE TOOL - A chatter vibration suppressing method includes acquiring a moment of inertia of a rotating body, recording a value indicating the acquired moment of inertia into a machining program, and calculating a variable amplitude and a variable period when a rotation speed of the rotating body is varied in order to suppress chatter vibration from the value indicating the moment of inertia recorded in the machining program and the maximum input power of a motor for rotating the rotating body. | 04-24-2014 |
20140121818 | SERVO CONTROL DEVICE FOR PERFORMING CORRECTION BASED ON AMOUNT OF STRETCH OR CONTRACTION OF BALL SCREW - A servo control device in the present invention corrects a position command to a feed axis, so as to compensate for an amount of stretch or contraction of a ball screw during operation, by taking into account an influence of tension applied to the ball screw. The amount of stretch or contraction of the ball screw is calculated, based on the tension acting on the ball screw on the side farther from the servo motor, a distance between two fixed units supporting the ball screw at its opposite ends, a distance from the fixed unit situated closer to the servo motor to a moving body, and a torque command to the servo motor. An amount of position correction of the feed axis is calculated, based on the calculated amount of stretch or contraction of the ball screw. | 05-01-2014 |
20140371899 | TRACK CONTROL APPARATUS - A track control apparatus includes an interpolation/acceleration and deceleration calculating unit that interpolates a commanded route and calculates a post-acceleration and deceleration interpolation route, an axis distributing unit that generates a position command for each movable axis from the post-acceleration and deceleration interpolation route, a servo-response calculating unit that calculates a servo response to the position command, a tangential-direction-servo-response calculating unit that obtains a tangential direction servo response from the post-acceleration and deceleration interpolation route, a reference-point generating unit that obtains a reference point from the tangential direction servo response, a position-vector correcting unit that corrects the position command for each movable axis to output a post-correction position command for each movable axis, and a servo control unit that outputs motor driving torque such that each movable axis follows the corresponding post-correction position command. | 12-18-2014 |
20150073582 | NUMERICAL CONTROLLER HAVING PROGRAM RESUMING FUNCTION - A numerical controller restores internal data of an NC section, shifts to a machining resumption temporary suspension state, and passes an identification number extracted from NC section program resumption block data to a PMC section. The PMC section, when receiving the identification number, restores a signal state of the PMC section and a state of a peripheral machine section, and, when the restoration is completed, notifies the NC section of the completion of the restoration. Then, the NC section cancels the machining resumption temporary suspension state and shifts to a state in which machining can be resumed. | 03-12-2015 |
20150081084 | NUMERICAL CONTROL DEVICE - In order to enable tapping to be performed precisely and with an appropriate machining time irrespective of the diameter of a tapping tool, a configuration of the present invention includes: a program analysis unit ( | 03-19-2015 |
20150370241 | METHOD FOR CONTROLLING A DEVICE SYSTEM HAVING POWER TOOL AND A MOTOR-DRIVEN ADVANCING MECHANISM - A method for controlling a device system ( | 12-24-2015 |
20160001410 | CONTROLLER FOR MACHINE TOOL - A thermal displacement state (target thermal displacement state) in which thermal displacement of a machine tool is saturated when the machine tool is operated based on a machining program is previously stored, and a warm-up operation pattern of a motor is determined so as to approach the target thermal displacement state. The motor is driven based on the warm-up operation pattern and the warm-up operation of the motor is stopped if the thermal displacement state of the machine tool is within a predetermined range. | 01-07-2016 |
20160004248 | WORKING MACHINE FEED AXIS CONTROL METHOD AND FEED AXIS CONTROL DEVICE - A working machine feed axis control device: disposes a velocity feedback loop and forms a cascade coupling on the inner side of a location feedback loop; comprises a velocity gain setting apparatus ( | 01-07-2016 |
20160062336 | NUMERICAL CONTROLLER FOR FACILITATING ADJUSTMENT OF MACHINING MOTION - A numerical controller generates machining change information on the basis of information on a currently executed block and a machining change signal input by an operator, converts the machining change information into a machining change program, merges the machining change program obtained through the conversion with the machining program, and generates a command for controlling a plurality of motors and a plurality of peripheral devices on the basis of the machining program after the merging. | 03-03-2016 |
20160062342 | I/O CONTROL SYSTEM - An I/O control system includes a numerical controller, amplifiers that drive motors, and an I/O control unit that is connected to a peripheral device. The I/O control unit includes an arithmetic processing unit that generates control information for control over the peripheral device from servo control information received through a communication interface and input data received from the peripheral device through an I/O interface and that outputs the generated control information to the peripheral device through the I/O interface. | 03-03-2016 |
20160116900 | NUMERICAL CONTROL DEVICE AND METHOD - A numerical control device with a function to prevent a problem caused by a rapid stop of a processing operation due to a motor overheating during processing. A temperature comparator obtains a load ratio T/Tmax or Tw/Tmax which is a ratio of the motor temperature T or predicted temperature Tw to a maximum allowable temperature Tmax stored in a storage device. When the load ratio T/Tmax or Tw/Tmax is over a threshold Tp stored in a storage, the device is placed in an alarm mode to shutdown the power supply to the motor after the processing program is executed to the end of a sequence block or the end of the processing program. | 04-28-2016 |
20160116902 | NUMERICAL CONTROLLER OPERATING FROM TABLE-FORMAT DATA - A numerical controller adapted to perform an operation based on table-format data includes a table management unit that selects a plurality of tables of table-format data used for a machining operation, a distribution processing unit that generates, for each table of the table-format data, distributed interpolation data for an axis to be controlled on the basis of the table-format data according to the plurality of tables of table-format data read out by the table readout unit, and a selection and superimposition unit that selects and superimposes, for each control axis, the plurality of tables of distributed interpolation data generated by the distribution processing unit. | 04-28-2016 |
20160132038 | MACHINING ASSISTANCE METHOD AND THE APPARATUS USING THE SAME - A machining assistance method and an apparatus using the same are provided. The machining assistance method comprises following steps. Firstly, a circle correction path is received for driving a platform to perform a circular motion. Next, a driving torque of the server driver driving the platform is obtained. Then, whether the driving torque is changed to 0 is determined; if yes, a first position of the platform is recorded. Then, whether the driving torque is changed to a peak is determined; if yes, a second position of the platform is recorded. After that, the server driver is controlled to drive the platform according to a first position and a second position in a machining process. | 05-12-2016 |
20160154398 | NUMERICALLY CONTROLLED MACHINE TOOL FOR DIRECT AND MANUAL OPERATION OF MOVABLE PART | 06-02-2016 |
20160378095 | SYSTEM FOR MANAGING REAL-TIME WORK INFORMATION OF A MOTOR FITTING - A system for managing real-time work information of a motor fitting provides a sensor set at the motor fitting to transmit the real-time work information to a processing module. A processing unit of the processing module sends type information and a real-time work parameter according to the real-time work information. When a detection unit determines the real-time work parameter is fallen outside a normal work parameter according to a lookup table stored in a database and the type information, the detection unit generates an abnormal-notification signal for transmission. When an application procedure of the application-processing unit is triggered, the application-processing unit activates a play unit to play the normal work parameter, and further the activated play unit plays notification information upon receiving the abnormal-notification signal. | 12-29-2016 |