Patent application number | Description | Published |
20080258671 | CONTROL DEVICE HAVING EXCESSIVE-ERROR DETECTION FUNCTION - Abnormality of a position error is quickly detected in a control device in which feedforward control is introduced. A position error estimation processing unit calculates a position error estimation value Err, for example, from the equation V/PG×(1−α) (V: first order differential of position command, PG: position gain in position controller, α: feedforward coefficient in feedforward term calculating unit), and abnormality of the position error is detected using an excessive-error detection level calculating by adding a margin ΔE to the position error estimation value. | 10-23-2008 |
20090097830 | MOTOR DRIVE DEVICE PROVIDED WITH DISTURBANCE LOAD TORQUE OBSERVER - A motor drive device ( | 04-16-2009 |
20100117568 | CONTROLLER FOR CALCULATING ELECTRIC POWER CONSUMPTION OF INDUSTRIAL MACHINE - A controller of an industrial machine provided with an electric motor, a peripheral apparatus and an amplifier for the motor. The controller includes a motor power-consumption calculation section calculating motor power consumption by multiplying a motor current detection value, a motor rotation-speed detection value and a predetermined motor torque constant together; a power loss calculation section calculating sum power loss of the motor and amplifier by adding motor power loss determined by multiplying a square of the motor current detection value by a predetermined motor winding-resistance value, amplifier power loss determined by multiplying the motor current detection value by a predetermined amplifier power-loss coefficient, and predetermined fixed amplifier power consumption together; a fixed power-consumption calculation section calculating fixed power consumption of the peripheral apparatus; and a total power-consumption calculation section determining total power consumption of the industrial machine in a predetermined time period by integrating, for the time period, the calculated motor power consumption, the calculated sum power loss and the calculated fixed power consumption. | 05-13-2010 |
20110015877 | TOOL PATH DISPLAY APPARATUS FOR MACHINE TOOL - First and second screens are set for a tool path display apparatus for displaying a path of the tip of a tool attached to a machine tool. The first screen displays the three-dimensional path of the tip of the tool obtained by synthesizing the position information of the drive axes of a 5-axis machine tool. The second screen displays the waveforms of the position deviations and current instructions of the drive axes in chronological order. When a part (line segment) of the three-dimensional path of the tip of the tool is selected on the first screen, the display attribute of the corresponding time area is changed on the second screen so that the time area can be identified. | 01-20-2011 |
20110057599 | 3D-TRAJECTORY DISPLAY DEVICE FOR MACHINE TOOL - A trajectory display device capable of correctly quantifying an error of a three-dimensional trajectory of a machine tool, and displaying or outputting the error. The trajectory display device has a command line segment defining part adapted to define a command line segment which connects two temporally adjacent points, in relation to each commanded position; an error calculating part adapted to define a normal line extending from the actual position to each command line segment and calculate an error of the actual position relative to a commanded trajectory, the error being determined as a shorter one between a length of a shortest normal line among the defined normal lines and a length of a line segment extending from the actual position to a commanded position which is the nearest from the actual position. | 03-10-2011 |
20110147028 | MOTOR CONTROL APPARATUS HAVING A FUNCTION TO CALCULATE AMOUNT OF COGGING TORQUE COMPENSATION - A motor control apparatus that can calculate a proper amount of cogging torque compensation even in cases where components due to other factors than cogging torque (for example, components due to gravitational torque, etc.) are superimposed on a torque command being output during constant slow-speed feed operation. The motor control apparatus includes: a torque command monitoring unit which monitors a torque command when the motor is caused to operate at a constant speed; an approximation calculation unit which calculates a torque command approximation component by approximation from the torque command monitored over an interval equal to an integral multiple of the cogging torque period of the motor; a second torque command calculation unit which calculates a second torque command by subtracting the torque command approximation component from the torque command; a second torque command frequency analyzing unit which extracts frequency components, each at an integral multiple of the fundamental frequency of the cogging torque, by performing frequency analysis on the thus calculated second torque command; and a cogging compensation amount calculation unit which calculates the amount of cogging compensation from the amplitude and phase of the extracted frequency components. | 06-23-2011 |
20110202167 | NUMERICAL CONTROLLER WITH TOOL TRAJECTORY DISPLAY FUNCTION - Coordinate values of a tool center point is calculated by obtaining coordinate values at each time of respective drive axes driven by a numerical controller. A tool radius compensation vector connecting the calculated tool center point at each time and an actual machining point is obtained. Then, coordinate values of the actual machining point are calculated based on the calculated coordinate values of the tool center point and the obtained tool radius compensation vector, and the trajectory of the actual machining point is displayed on a display. | 08-18-2011 |
20120035745 | PROCESSING INFORMATION ACQUISITION SYSTEM IN PROCESSING MACHINE SUPPLYING PROCESSING POINT WITH ENERGY OR MATERIAL - A processing information acquisition system in a processing machine which feeds a processing point energy or material, the processing information acquisition system provided with a position information acquisition unit which acquires position information of a feed unit of energy or material, a feed rate control unit which receives a feed condition command of energy or material, converts the feed condition command to a control command which controls a feed of energy or material, and uses the converted control command to control a feed rate of energy or material from the feed unit, a feed rate estimation unit which acquires the control command from the feed rate control unit and calculates an estimated feed rate of energy or material which is fed to a processing point based on the control command, and an output unit which outputs the position information which the position information acquisition unit acquired and the estimated feed rate which the feed rate estimation unit calculated when the feed unit is located at a position corresponding to the position information. | 02-09-2012 |
20120203374 | NUMERICAL CONTROLLER FOR MAKING POSITIONING COMPLETION CHECK - A numerical controller calculates the distance (rotation radius) between the rotation center axis of a rotary axis and a control target point using the machine conditions (including the axis structure and tool length) of a machine tool having a rotary axis and the coordinate values of the respective axes of the machine tool. Then, the preset positioning completion widths of the respective axes are compensated by the calculated rotation radius and a positioning completion check of the rotary axis is carried out using the compensated positioning completion widths. | 08-09-2012 |
20120206080 | MOTOR DRIVING CONTROL APPARATUS FOR CONTROLLING MOTOR OUTPUT ACCORDING TO POWER CHARACTERISTICS OF AC POWER SUPPLY - A motor driving control apparatus includes a motor driving unit which drives a motor and a driving control unit which supplies to the motor driving unit a command value for the motor driving unit to drive the motor. A power characteristic acquiring unit acquires a power characteristic of an AC power supply that supplies power to the motor. A control parameter determining unit determines based on a voltage characteristic of the AC power supply whether, during driving of the motor, the voltage of the AC power supply drops to a level that adversely affects the driving of the motor, and if positive, the control parameter determining unit sets a control parameter so that the voltage of the AC power supply does not drop below that level and supplies the control parameter to the driving control unit in order for the driving control unit to determine the command value. | 08-16-2012 |
20120257276 | TOOL PATH DISPLAY APPARATUS FOR MACHINE TOOL - A tool path display apparatus, configured to display a three-dimensional path of a movable part of a machine tool, calculates three-dimensional coordinate values of the movable part as viewed from a coordinate system secured to a workpiece, thereby determining the three-dimensional path of the movable part. Left- and right-eye stereoscopic image data are determined based on the determined three-dimensional path of the movable part, and the determined left- and right-eye stereoscopic image data are displayed on the display apparatus so that they can be viewed by an operator's left and right eyes, respectively. | 10-11-2012 |
20120306413 | MOTOR DRIVING DEVICE COMPRISING MAXIMUM OUTPUT CALCULATION UNIT OF DIRECT CURRENT CONVERSION UNIT - A motor driving device comprises: a single DC conversion unit that converts input AC into DC; a plurality of AC conversion units that convert DC output from the DC conversion unit into AC supplied to a plurality of motor units as driving electric power; an electric power consumption calculation unit of the DC conversion unit that calculates electric power consumption of the DC conversion unit from the input voltage and input current to the DC conversion unit every predetermined time period; and a maximum output calculation unit of the DC conversion unit that extracts a maximum value from the electric power consumption of the DC conversion unit calculated every predetermined time period and outputs it as a maximum output of the DC conversion unit. | 12-06-2012 |
20130030558 | NUMERICAL CONTROLLER OF MACHINE TOOL HAVING SOUND CONVERTING UNIT - A numerical controller, wherein an operator, even remotely, can recognize a sound of a machine tool or the like, and can intuitively know the effect in adjusting the parameter. The numerical controller includes a drive axis controlling part configured to control a drive axis; a drive axis data storing part configured to obtain a physical quantity of the drive axis as time-series data and store the time-series data; a displaying part configured to convert the time-series data into a predetermined indication form and display the data as at least one displayed waveform; a selecting part configured to select the displayed waveform by input operation of the operator; a sound converting part configured to convert the selected waveform into sound conversion data, a type of which is capable of being output as sound; and a sound outputting part configured to output the generated sound conversion data as sound. | 01-31-2013 |
20130054182 | TOOL PATH DISPLAY APPARATUS HAVING DISPLAY UNIT FOR ACCELERATION OR JERK OF TOOL TIP POINT - A tool path display apparatus ( | 02-28-2013 |
20130096700 | NUMERICAL CONTROLLER HAVING DISPLAY FUNCTION OF PHYSICAL DATA OF MACHINE TOOL - A numerical controller having a display function for comparing data at a predetermined position regardless of a change in a processing condition. The numerical controller comprises a numerical controlling part which controls each drive axis based on a predetermined position command; a position data obtaining part which obtains position data of each axis and a tool representative point of the machine tool; a movement distance calculating part which calculates movement distance of the axis and the tool representative point based on the obtained position data and dimensional information of each component of the machine tool; a physical data obtaining part which obtains physical data of each axis and the tool; a data converting part which converts the obtained time axis-based physical data into movement distance-based data; a distance-based data storing part which stores the movement distance-based data; and a displaying part which displays the movement distance-based data. | 04-18-2013 |
20130222391 | WAVEFORM DISPLAY DEVICE WITH DATA MANAGEMENT FUNCTION - A waveform display device with a data management function acquires drive-axis data of a machine tool from a numerical controller for controlling the machine tool and acquires parameters of the numerical controller from the numerical controller. The waveform display device manages the drive-axis data and the parameters in association with each other, based on a time at which the drive-axis data is acquired and a time at which the parameter is acquired. These times of acquisition of the drive-axis data and the parameters are set by a timer of the waveform display device. | 08-29-2013 |
20130325166 | NUMERICAL CONTROL DEVICE INCLUDING DISPLAY PART FOR DISPLAYING INFORMATION FOR EVALUATION OF MACHINING PROCESS - A numerical control device according to the present invention includes a display part for displaying a program coordinate and a command coordinate such that they can be compared with each other. The display part may be adapted to further display an actual coordinate. The display part may also be adapted to further display a program trajectory, a command trajectory and an actual trajectory, which are obtained from a machining program and the program coordinate, the command coordinate and the actual coordinate, respectively. | 12-05-2013 |
20130338816 | TOOL PATH DISPLAY APPARATUS FOR DISPLAYING TOOL VECTOR OF MACHINE TOOL - A tool path display apparatus includes a display unit for displaying at least two of a program path, a command path and an actual path so that the paths can be compared with each other. The tool path display apparatus further includes a tool vector display unit for displaying tool vectors representative of tool postures corresponding to these paths so that the tool vectors can be compared with each other. Each tool vector is displayed as a line segment connecting a tool tip point and a reference point distant from the tool tip point toward a tool base end side by a predetermined distance. | 12-19-2013 |
20140022086 | DATA DISPLAY DEVICE FOR MACHINE TOOL FOR DISPLAYING INFORMATION BASED ON SPECIFIED CONDITION - A data display device is adapted to associate data and parameters obtained from a numerical control apparatus with extracted information selected by an operator, and specify an arrangement condition or a selection condition based on the extracted information. The data display device is also adapted to display controlling information in an arranged manner according to the arrangement condition. Alternatively, the data display device is adapted to display only information in a selective manner which satisfies the condition specified according to the selection condition. | 01-23-2014 |
20140100688 | TOOL TRAJECTORY DISPLAY DEVICE HAVING FUNCTION FOR DISPLAYING INVERSION POSITION OF SERVO AXIS - A tool trajectory display device capable of displaying an inversion position of a servo axis on a tool trajectory. The display device has a position information obtaining part and velocity information obtaining part which obtain position information and velocity information of at least one servo axis, respectively, from numerical controller; a tool coordinate calculating part which calculates a coordinate value of a tool center point based on the position information and information of a mechanical constitution of the machine tool; an inversion position calculating part which calculates an inversion position where a polarity of a velocity of the servo axis is changed, based on the velocity information and the calculated coordinate value; and a displaying part which displays a trajectory of the tool center point based on the calculated coordinate, and displays the inversion position of the servo axis on the trajectory. | 04-10-2014 |
20140103852 | MOTOR CONTROL DEVICE CONTROLLING A PLURALITY OF MOTORS THAT DRIVE ONE DRIVEN BODY - A state switching unit switches the state of a motor that has caused an alarm, from an excited state to an un-excited state at an alarm generation timing. A state switch timing setting unit sets a state switch timing of switching the state of a motor other than the motor that has caused the alarm, from an excited state to an un-excited state. This setting is made on the basis of a physical quantity concerning at least one of the motor and a driven body. At the set state switch timing, a state switching unit switches the state of the motor other than the motor that has caused the alarm, from an excited state to an un-excited state. | 04-17-2014 |
20140167672 | SERVO CONTROLLER FOR CORRECTING POSITION ERROR WHEN MOVING MEMBER REVERSES - A servo controller ( | 06-19-2014 |