公开(公告)号：US20230069907A1

公开(公告)日：2023-03-09

申请号：US17904676

申请日：2021-02-17

Applicant: FANUC CORPORATION

Inventor： Kenta YAMAMOTO ,  Yuuki MORITA

IPC: G05B19/4093

Abstract: The purpose of the present invention is to provide a control device for a machine tool that can reliably chop chips while suppressing vibration of the machine tool. A control device (1) for a machine tool machines by relatively oscillating a tool and a workpiece, the control device comprising: an oscillation command generation unit (13) that calculates an oscillation amplitude and an oscillation frequency from a machining condition and generates an oscillation command; and a position-speed control unit (17) that relatively oscillates the tool and the workpiece on the basis of a superimposed command generated by superimposing the oscillation command generated by the oscillation command generation unit (13) on a position command or a position deviation. The oscillation command generation unit (13) changes the oscillation amplitude and/or the oscillation frequency during machining.

公开(公告)号：US20230037816A1

公开(公告)日：2023-02-09

申请号：US17758786

申请日：2021-01-25

Applicant: FANUC CORPORATION

Inventor： Yuuki KUMAMOTO ,  Kenta YAMAMOTO

IPC: G05B19/404 ,  B23Q15/013

Abstract: Provided is a control device for a machine tool, the control device being capable of more appropriately and easily determining a swing condition. A control device 10 for a machine tool for swinging a work piece and a tool relatively to each other to perform machining, the control device 10 comprising a storage unit 15 which stores correspondence between a machining condition and a swing condition, the machining condition being at least one of specifications of the work piece, specifications of the tool, a machining method and a machining shape, a swing condition determination unit 16 which selects a swing condition to be used for the machining on the basis of the correspondence stored in the storage unit 15, and a swing command generation unit 18 which generates a swing command on the basis of the swing condition selected by the swing condition determination unit 16.

公开(公告)号：US20220305602A1

公开(公告)日：2022-09-29

申请号：US17841336

申请日：2022-06-15

Applicant: FANUC CORPORATION

Inventor： Yuutarou HORIKAWA ,  Masashi YASUDA ,  Kenta YAMAMOTO

IPC: B23Q15/013 ,  B23G11/00 ,  B23Q17/20 ,  B23Q15/08 ,  B23G1/04

Abstract: To provide a control device for a machine tool capable of performing thread cutting while reducing the load on the machine tool from the oscillating operation, without extending the cycle time, and capable of reliably shredding chips in a case of performing the non-oscillating operation in the present pass after the oscillating operation in the previous pass. A control device for a machine tool includes: an oscillating operation execution determination unit that determines whether to execute an oscillating operation that causes the cutting tool to oscillate in the radial direction of the workpiece; an oscillation command generation unit that generates an oscillation command of the oscillating operation based on a determination result; a control unit that superimposes the oscillation command on a position command of the feed axis to generate a drive command. The oscillating operation execution determination unit determines to intermittently execute the oscillating operation, and the oscillation command generation unit generates an oscillation command so that a non-oscillating cutting portion of a present pass includes a portion at which oscillating cutting was performed in a previous pass, or so that an oscillating cutting portion of the present pass includes a portion at which non-oscillating cutting was performed in the previous pass.

公开(公告)号：US20200290168A1

公开(公告)日：2020-09-17

申请号：US16817194

申请日：2020-03-12

Applicant: FANUC CORPORATION

Inventor： Ryou MORIHASHI ,  Kenta YAMAMOTO ,  Naoto SONODA

IPC: B23Q15/007 ,  B23Q15/12

Abstract: A servo controller 20 includes: an oscillation command generating unit 23 that generates an oscillation command for causing the workpiece W and the tool 14 to relatively oscillate; at least one of a position control unit 22 that generates a position command for causing the workpiece W and the tool 14 to relatively move, a speed control unit 24 that generates a speed command for causing the workpiece W and the tool 14 to relatively move, and a current control unit 25 that generates a torque command for driving the plurality of axes; and a gain changing unit 21 that changes a control gain, in which the oscillation command generating unit 23 transmits a signal outputted when oscillating operation is started to the gain changing unit 21, and the gain changing unit 21 changes the control gain.

公开(公告)号：US20200174440A1

公开(公告)日：2020-06-04

申请号：US16698934

申请日：2019-11-27

Applicant: FANUC CORPORATION

Inventor： Ryou MORIHASHI ,  Naoto SONODA ,  Kenta YAMAMOTO

IPC: G05B19/18 ,  G05B19/416 ,  G05B19/4155

Abstract: A numerical control device according to the present invention includes: an upper limit value acquisition unit which acquires an upper limit value for a cutting speed that is a relative speed of the cutting tool to the workpiece; a reference speed calculation unit which calculates a revolution number of the spindle, and a feedrate; an oscillation speed calculation unit which calculates an oscillation speed that is superimposed on the feedrate; a cutting speed calculation unit which calculates the cutting speed based on the revolution number of the spindle, the feedrate and the oscillation speed; and a speed adjustment unit which adjusts at least either one of the revolution number of the spindle and the feedrate, so that a maximum value of the cutting speed calculated by the cutting speed calculation unit does not exceed the upper limit value acquired by the upper limit value acquisition unit.

公开(公告)号：US20180299856A1

公开(公告)日：2018-10-18

申请号：US15952267

申请日：2018-04-13

Applicant: FANUC CORPORATION

Inventor： Shunpei TANAKA ,  Kenta YAMAMOTO

IPC: G05B19/18

Abstract: A control device of a machine tool includes an oscillation command generation part which generates an oscillation command for at least one feed axis based on a rotation speed of a spindle and a position command of the at least one feed axis so that the oscillation command becomes a positive non-integral multiple of the rotation speed and a tool intermittently cuts a workpiece, an oscillation command correction part which corrects the oscillation command using the position of the feed axis, and an addition part which adds the oscillation command corrected by the oscillation command correction part to a position deviation between the position command and the detected position of the feed axis.

公开(公告)号：US20140306640A1

公开(公告)日：2014-10-16

申请号：US14250773

申请日：2014-04-11

Applicant: FANUC CORPORATION

Inventor： Kenta YAMAMOTO

IPC: H02P27/08

CPC classification number: H02P27/08 ,  H02P3/14 ,  H02P27/06 ,  H02P29/025

Abstract: A motor control apparatus includes: a PWM rectifier; an inverter; a detection unit for detecting an AC voltage value of the PWM rectifier; a calculation unit for calculating a power supply voltage phase; a detection unit for detecting an AC current value of the PWM rectifier; a current loop control unit for generating an AC voltage command to control a power conversion operation of the PWM rectifier; a current loop saturation state determination unit for determining to be in a current loop saturation state when a magnitude of the AC voltage command is equal to or larger than a predetermined voltage prescribed value; an operation determination unit for determining whether the PWM rectifier is in a powering operation or in a regenerative operation and a power failure determination unit for determining a presence or absence of a power failure at the AC power supply side from the determination results.

Abstract translation: 一种电动机控制装置，包括：PWM整流器; 逆变器 用于检测PWM整流器的AC电压值的检测单元; 用于计算电源电压相位的计算单元; 检测单元，用于检测PWM整流器的AC电流值; 电流回路控制单元，用于产生用于控制PWM整流器的功率转换操作的AC电压指令; 电流环饱和状态确定单元，用于当所述交流电压指令的大小等于或大于预定电压规定值时，确定为当前环路饱和状态; 用于确定PWM整流器是处于供电操作还是再生操作的动作确定单元，以及用于从所述确定结果确定所述交流电源侧是否存在电力故障的停电判定单元。

公开(公告)号：US20230266741A1

公开(公告)日：2023-08-24

申请号：US18006863

申请日：2021-07-27

Applicant: FANUC CORPORATION

Inventor： Kenta YAMAMOTO ,  Yuuki KUMAMOTO

IPC: G05B19/4155

CPC classification number: G05B19/4155 ,  G05B2219/45044

Abstract: Provided is a machine tool control device that can generate movement commands of any required command form and that can also suppress the deviation of a peak position during air cutting. A machine tool control device 1 that performs processing while making a tool and a workpiece oscillate relative to each other. The machine tool control device 1 comprises an oscillation conditions setting unit 11 that sets oscillation conditions, an oscillation phase division unit 12 that divides an oscillation phase into a plurality of segments, a layered command calculation unit 13 that, for each of the divided segments, calculates a layered command as a movement command on the basis of the oscillation conditions, and a position and speed control unit 17 that makes the tool and the workpiece oscillate relative to each other on the basis of the layered commands.

公开(公告)号：US20230188073A1

公开(公告)日：2023-06-15

申请号：US17925938

申请日：2021-05-14

Applicant: FANUC CORPORATION

Inventor： Naoya NISHINAGA ,  Kenta YAMAMOTO

IPC: H02P23/24 ,  H02P27/08 ,  H02P23/14 ,  H02P29/028

CPC classification number: H02P23/24 ,  H02P27/085 ,  H02P23/14 ,  H02P29/028

Abstract: When the rotation direction of a motor is determined by a connection determination unit not to match a rotation command, the phase sequence of a current detection signal and the phase sequence of a voltage command are changed by a phase sequence change unit, or the positive/reverse polarity of an encoding signal outputted from an encoder is inverted by the phase sequence change unit, whereby the rotation direction of the motor controlled by a motor control device can match the rotation command.

公开(公告)号：US20230089938A1

公开(公告)日：2023-03-23

申请号：US17904458

申请日：2021-03-04

Applicant: FANUC CORPORATION

Inventor： Ryou MORIHASHI ,  Kenta YAMAMOTO

IPC: G05B19/18 ,  B23B1/00 ,  B23Q15/12 ,  G05B19/404 ,  G05B19/4093

Abstract: To provide a controller for a machine tool that can shred shavings in a sure manner, even if a delay in notification occurs at the time of performing oscillation cutting. This controller of machine tools controls the machine tools that perform cutting working of a work by a cutting tool with a spindle and a feed axis operating cooperatively. The controller includes: an oscillation command calculating unit that calculates an oscillation command to cause relative oscillation of the cutting tool and the work, from a rotation speed of the spindle and a positional command of the cutting tool as to the work; a correction amount calculating unit that calculates a correction amount corresponding to an amount of delay notification to the oscillation command calculating unit regarding the rotation speed of the spindle; and a correction amount superimposing unit that superimposes the correction amount on the oscillation command.