公开(公告)号：US20160134227A1

公开(公告)日：2016-05-12

申请号：US14932365

申请日：2015-11-04

申请人： FANUC CORPORATION

发明人： Shoutarou Hashimoto ,  Tadashi Okita

IPC分类号： H02P29/02 ,  H02P21/14 ,  H02P6/00

CPC分类号： H02P29/024 ,  B23Q11/04 ,  B62D5/046 ,  B62D5/0463 ,  H02H7/085 ,  H02P6/14 ,  H02P6/34 ,  H02P21/14 ,  H02P21/20 ,  H02P29/02 ,  H02P29/0241 ,  Y02T10/642

摘要： A motor control device includes a load torque estimation unit configured to estimate a load torque applied to a motor, a torque comparison unit configured to compare the load torque with a reference torque, a time measurement unit configured to measure a time span during which the load torque is higher than the reference torque, a time comparison unit configured to compare the time span with a reference time, and a decision unit configured to decide that the motor is subjected to an excessive load when the time span exceeds the reference time.

摘要翻译： 一种电动机控制装置，包括：负载转矩估计单元，被配置为估计施加到电动机的负载转矩;扭矩比较单元，被配置为将所述负载转矩与参考转矩进行比较;时间测量单元，被配置为测量所述负载 扭矩高于参考扭矩，时间比较单元，被配置为将时间跨度与参考时间进行比较;以及判定单元，被配置为当所述时间跨度超过所述参考时间时，判定所述马达受到过载。

公开(公告)号：US11003168B2

公开(公告)日：2021-05-11

申请号：US16588038

申请日：2019-09-30

申请人： Fanuc Corporation

发明人： Shoutarou Hashimoto ,  Yukio Toyozawa

IPC分类号： G05B11/32 ,  G05B19/414 ,  B23F9/02 ,  B23F23/00 ,  B23F9/10

摘要： Provided is a controller for controlling a gear cutting machine having a plurality of axes, the controller including an axis information storage unit configured to store data related to control of the plurality of axes during machining, and a disturbance component identification unit configured to identify a component of disturbance with respect to the plurality of axes using the data stored by the axis information storage unit and measurement results of machining accuracy of a workpiece machined by the cutting machine.

公开(公告)号：US10585418B2

公开(公告)日：2020-03-10

申请号：US15947981

申请日：2018-04-09

申请人： FANUC CORPORATION

发明人： Satoshi Ikai ,  Shoutarou Hashimoto

IPC分类号： G05B19/4067 ,  G06T7/13 ,  G05B19/402 ,  G05B19/408 ,  G06T1/60

摘要： A control system of a machine tool includes an analysis device, the analysis device includes acquisition portions which acquire chronological control data when a work is machined and which acquire spatial machined surface measurement data after the machining of the work, a storage portion which stores the control data and the machined surface measurement data, a data-associating processing portion which associates the control data and the machined surface measurement data with each other in two machining directions, a machined surface failure detection portion which detects a failure on the machined surface of the work and a location thereof based on the machined surface measurement data in the two machining directions and an identification portion which identifies a drive axis that causes the failure from the detected failure and the machining direction of the control data corresponding to the detected failure location.

公开(公告)号：US20180307202A1

公开(公告)日：2018-10-25

申请号：US15947981

申请日：2018-04-09

申请人： FANUC CORPORATION

发明人： Satoshi Ikai ,  Shoutarou Hashimoto

IPC分类号： G05B19/4067 ,  G05B19/402 ,  G05B19/408 ,  G06T7/13 ,  G06T1/60

摘要： A control system of a machine tool includes an analysis device, the analysis device includes acquisition portions which acquire chronological control data when a work is machined and which acquire spatial machined surface measurement data after the machining of the work, a storage portion which stores the control data and the machined surface measurement data, a data-associating processing portion which associates the control data and the machined surface measurement data with each other in two machining directions, a machined surface failure detection portion which detects a failure on the machined surface of the work and a location thereof based on the machined surface measurement data in the two machining directions and an identification portion which identifies a drive axis that causes the failure from the detected failure and the machining direction of the control data corresponding to the detected failure location.

公开(公告)号：US09958857B2

公开(公告)日：2018-05-01

申请号：US15483258

申请日：2017-04-10

申请人： FANUC CORPORATION

发明人： Shoutarou Hashimoto ,  Tadashi Okita ,  Yuuki Morita

IPC分类号： H02P1/54 ,  G05B11/01 ,  G05B19/404 ,  G05B19/31 ,  G05B19/4062

CPC分类号： G05B19/404 ,  G05B19/31 ,  G05B19/4062 ,  G05B2219/34013 ,  G05B2219/41059 ,  G05B2219/50297

摘要： To provide a motor control device, motor control method, and non-transitory computer readable medium recording a motor control program, which add a backlash correction amount to a position command for a motor at the appropriate timing. Included are a first position detection part that detects a first position which is a position of a movable part; a second position detection part that detects a second position which is a position of a driven part; a positional error calculation part that calculates positional error, which is deviation between a converted first position detected value and a second position detected value; and a backlash correction part that adds a backlash correction amount when the absolute value for the variation of the positional error since reversal of a position command was detected exceeds the predetermined reference value.

公开(公告)号：US09887660B2

公开(公告)日：2018-02-06

申请号：US14803307

申请日：2015-07-20

申请人： FANUC CORPORATION

发明人： Shoutarou Hashimoto ,  Tadashi Okita

IPC分类号： G02B5/00 ,  H02H7/08 ,  H02P1/04 ,  H02P3/00 ,  H02P29/024 ,  H02P3/14 ,  H02P3/18

CPC分类号： H02P29/025 ,  H02P3/14 ,  H02P3/18

摘要： A motor control device of the present invention is a control device for a motor for driving a feed shaft of a machine tool, and includes: a power outage detector for detecting a power outage of a power source for supplying power to drive the motor; a forcible decelerator for forcibly decelerating the motor in response to a torque command when a power outage is detected; a DC link voltage monitor for monitoring a DC link voltage applied to an amplifier for driving the motor; a determination unit for determining whether the value of the DC link voltage is greater than a first threshold, or whether the change ratio of the DC link voltage is greater than a second threshold; and, a torque command limiter for limiting the torque command to a predetermined torque command limiting value, in accordance with the result of determination at the determination unit.

公开(公告)号：US09377773B2

公开(公告)日：2016-06-28

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： H02K7/10 ,  G05B11/01 ,  G05B19/404 ,  G05B19/19 ,  G05B19/416

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：US10720869B2

公开(公告)日：2020-07-21

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 ,  H02P21/08 ,  H02P23/00 ,  H02P21/18 ,  G05B19/416 ,  H02P21/14 ,  H02P27/06

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.

公开(公告)号：US10423170B2

公开(公告)日：2019-09-24

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 ,  G05B19/404 ,  G01D5/244 ,  G05B19/416 ,  G05B19/042

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：US10012974B2

公开(公告)日：2018-07-03

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 ,  G05B19/4063

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.