公开(公告)号：US20150355627A1

公开(公告)日：2015-12-10

申请号：US14734558

申请日：2015-06-09

申请人： FANUC Corporation

发明人： Shoutarou HASHIMOTO ,  Tadashi OKITA

IPC分类号： G05B19/402 ,  G05B15/02

CPC分类号： G05B19/402 ,  G05B15/02 ,  G05B19/4063 ,  G05B2219/34391 ,  G05B2219/49001 ,  G05B2219/50083 ,  G05B2219/50112

摘要： A motor control system which makes a tool motor and a workpiece motor rotate in synchronization in a machine tool equipped with a tool motor, a workpiece motor, and a tool shaft movement motor which drives a linear shaft to change an intershaft distance between the tool shaft and the workpiece shaft, wherein when the power outage detector detects a power outage of the power supply during synchronous rotation of the tool motor and the workpiece motor, the operation of the forced deceleration circuit for causing forced deceleration of either one of the tool motor and workpiece motor is made to be delayed by a predetermined time and during that time the tool shaft movement motor is used to drive the linear shaft and separate the tool and workpiece as a retraction operation to thereby prevent damage to the tool and the workpiece at the time of a power outage.

摘要翻译： 一种电动机控制系统，其使工具电动机和工件电动机在配备有工具电动机，工件电动机和工具轴运动电动机的机床中同步旋转，该电动机驱动线性轴以改变工具轴之间的轴间距离 以及所述工件轴，其中，当所述停电检测器检测到所述工具电动机和所述工件电动机的同步旋转期间的所述电源的停电时，所述强制减速电路的操作使得所述工具电动机和 工件电动机被延迟预定时间，并且在该时间期间，工具轴运动马达用于驱动直线轴并将工具和工件分离为缩回操作，从而防止在此时对工具和工件的损坏 断电。

公开(公告)号：US20170344029A1

公开(公告)日：2017-11-30

申请号：US15602729

申请日：2017-05-23

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO ,  Tadashi OKITA ,  Yuuki MORITA

IPC分类号： G05D3/20 ,  G05B19/416

摘要： Included are a first position detection part that detects a first position which is the position of a movable part; a second position detection part that detects a second position which is the position of a driven part; a positional error calculation part that calculates positional error, which is deviation between a converted first position detection value and a second position detection value; and a positional error variation calculation part that calculates an absolute value for variation of positional error since reversal of a position command was detected, in which addition of a backlash correction amount is started if the absolute value for the variation of the positional error exceeds a first reference value, and addition of a backlash acceleration amount is started if the absolute value of variation of the positional error exceeds a second reference value.

公开(公告)号：US20200007060A1

公开(公告)日：2020-01-02

申请号：US16434704

申请日：2019-06-07

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO ,  Yuuki MORITA

IPC分类号： H02P21/18

摘要： A motor controller includes: a rotation speed estimating unit that estimates a rotation speed of a motor based on current information and primary frequency information of the motor; a proximity switch that outputs an ON signal when a portion of a rotating body of the motor is in proximity and that outputs an OFF signal when a portion of the rotating body of the motor is not in proximity; a rotation speed calculating unit that calculates a rotation speed of the motor based on the ON signal and the OFF signal output from the proximity switch; a speed command compensating unit that compensates a speed command value such that an error between the speed command value and a rotation speed calculation value becomes smaller; and a speed control system that perform the speed control on the motor based on the compensated speed command value and the rotation speed estimation value.

公开(公告)号：US20180299861A1

公开(公告)日：2018-10-18

申请号：US15952487

申请日：2018-04-13

申请人： FANUC CORPORATION

发明人： Satoshi IKAI ,  Shoutarou HASHIMOTO

IPC分类号： G05B19/404

摘要： A control system of a machine tool includes an analysis device, the analysis device includes acquisition portions which acquire chronological speed control data when a work is machined and which acquire spatial machined surface measurement data after the machining of the work, a data-associating processing portion which associates the speed control data and the machined surface measurement data with each other, a machined surface failure detection portion which detects a failure depth of a failure location on the machined surface of the work and an identification portion which identifies the control data of the failure location corresponding to the machined surface measurement data of the failure location so as to identify a failure depth corresponding to the control data of the failure location and the numerical control device corrects the control data based on the control data of the failure location and the corresponding failure depth.

公开(公告)号：US20150309500A1

公开(公告)日：2015-10-29

申请号：US14692793

申请日：2015-04-22

申请人： FANUC Corporation

发明人： Shoutarou HASHIMOTO ,  Tadashi OKITA

IPC分类号： G05B19/404

CPC分类号： G05B19/404 ,  G05B19/19 ,  G05B19/416 ,  G05B2219/41083 ,  G05B2219/41155 ,  G05B2219/49182

摘要： A motor controller is configured to judge whether or not the amount of displacement of a driven body after the direction of movement of the driven body is reversed, exceeds a predetermined threshold value, and whether or not the amount of displacement of a motor after the direction of movement of the motor is reversed, exceeds another predetermined threshold value. When the amount of displacement of the driven body exceeds the threshold value, or the amount of displacement of the motor exceeds a second threshold value, the correction of the commands to the motor is terminated.

摘要翻译： 电动机控制器被配置为判断从动体的移动方向的驱动体的位移量是否相反超过预定阈值，以及电动机在方向之后的位移量 马达的运动反转，超过另一预定阈值。 当被驱动体的位移量超过阈值或电动机的位移量超过第二阈值时，终止对电动机的指令的修正。

公开(公告)号：US20200153325A1

公开(公告)日：2020-05-14

申请号：US16594076

申请日：2019-10-07

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO

IPC分类号： H02K47/02 ,  H02P27/04 ,  H02P6/08

摘要： A motor control apparatus includes: a converter configured to convert AC voltage input from an AC power supply side into DC voltage, and then output the DC voltage to a DC side; an inverter configured to convert DC voltage input from the DC side into AC voltage for driving a motor, and then output the AC voltage; and a boosting unit configured to step up DC voltage input to the inverter from the DC side, according to a deviation between a speed command to the motor and speed information acquired from the motor.

公开(公告)号：US20190123671A1

公开(公告)日：2019-04-25

申请号：US16164106

申请日：2018-10-18

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO ,  Yuuki MORITA

IPC分类号： H02P21/30 ,  H02P21/22

摘要： A motor control device including: an operation control part that generates a torque command based on an operation command, and controls a rotational position and/or rotational speed of the spindle; a current control part that generates an excitation current command to control secondary magnetic flux of the induction motor, and a torque current command to control torque of the induction motor based on the torque command; a change detection part that detects a change in operation command requiring increasing the secondary magnetic flux of the induction motor; a magnetic flux amplification part that performs magnetic flux amplification to temporarily increase the excitation current command or a magnetic flux command in the current control part, in a case of a change in the operation command being detected; and a gain change part that changes gain of the operation control part when performing magnetic flux amplification.

公开(公告)号：US20190036471A1

公开(公告)日：2019-01-31

申请号：US16019930

申请日：2018-06-27

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO ,  Yuuki MORITA

IPC分类号： H02P23/08 ,  H02P23/14 ,  B23Q5/10

摘要： A motor controller includes: a primary frequency control unit that generates a primary frequency command value based on current information of an induction motor and limits the primary frequency command value based on a maximum primary frequency; a rotation speed estimating unit that estimates a slip frequency based on the current information of the induction motor and estimates a rotation speed based on the estimated slip frequency estimation value and the primary frequency command value; a proximity switch that outputs an ON signal or OFF signal when a portion of a rotating body of the induction motor is in proximity or not in proximity; a rotation speed computing unit that computes a rotation speed based on the ON signal and the OFF signal; and a maximum primary frequency computing unit that computes the maximum primary frequency based on the rotation speed computation value.

公开(公告)号：US20190036467A1

公开(公告)日：2019-01-31

申请号：US16032326

申请日：2018-07-11

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO ,  Yuuki MORITA

IPC分类号： H02P21/18 ,  H02P21/09

CPC分类号： H02P21/18 ,  H02P6/18 ,  H02P21/09 ,  H02P25/062 ,  H02P29/0241 ,  H02P2203/05 ,  H02P2203/07 ,  H02P2207/01

摘要： A motor controller includes: a rotation speed estimating unit that estimates a rotation speed of an motor on the basis of current information and primary frequency information of the motor; a proximity switch that outputs an ON signal when a portion of a rotating body of the motor is in proximity and outputs an OFF signal when a portion of the rotating body of the motor is not in proximity; a rotation speed computing unit that computes a rotation speed of the motor on the basis of the ON signal and the OFF signal output from the proximity switch; and an abnormality detection unit that detects an abnormality in the rotation speed estimation value or an abnormality in the proximity switch when a difference between the estimated rotation speed estimation value and the computed rotation speed computation value is equal to or larger than a threshold.

公开(公告)号：US20190123670A1

公开(公告)日：2019-04-25

申请号：US16153004

申请日：2018-10-05

申请人： FANUC CORPORATION

发明人： Shoutarou HASHIMOTO ,  Yuuki MORITA

IPC分类号： H02P21/22 ,  H02P21/18 ,  H02P21/14 ,  G05B19/416

摘要： A motor control device controls an induction motor driving a spindle of a machine tool, and includes: a spindle control unit that controls a rotational position or rotational speed of the spindle, and a secondary magnetic flux of the induction motor in accordance with an operation command based on an operation program of the machine tool; an advance detection unit that pre-reads the operation program, and detects a change in the operation command requiring to increase the secondary magnetic flux of the induction motor in advance; and an advance change unit that causes the secondary magnetic flux of the induction motor to increase prior to a change in the operation command in the spindle control unit, in a case of a change in the operation command being detected by the advance detection unit.