公开(公告)号：US11241764B2

公开(公告)日：2022-02-08

申请号：US16901136

申请日：2020-06-15

申请人： FANUC CORPORATION

发明人： Gaku Isobe

IPC分类号： B23Q3/157 ,  B23Q17/09 ,  B23Q3/155 ,  G05B19/00

摘要： A machine tool includes: a spindle that allows a tool to be detachably mounted thereon; a tool changing device that holds a plurality of the tools, and attaches and detaches any of the tools to and from the spindle; a date and time storage unit that stores date and time when operation of the spindle is stopped last; and a calculation unit that calculates unused time of the spindle on the basis of the date and time stored in the date and time storage unit, when the tool is to be detached from the spindle, wherein in a case where the unused time calculated by the calculation unit is longer than a predetermined threshold value, the tool changing device performs detaching motion of the tool from the spindle for longer time compared to a case where the calculated unused time is at or less than the threshold value.

公开(公告)号：US10514320B2

公开(公告)日：2019-12-24

申请号：US16122108

申请日：2018-09-05

申请人： FANUC CORPORATION

发明人： Gaku Isobe ,  Yuuzou Inaguchi

IPC分类号： B23Q17/00 ,  G01M13/04 ,  B23Q17/09 ,  B23Q17/10 ,  B23Q11/14

摘要： In a temperature estimation method, a rotational speed of a spindle is acquired. Moreover, a temperature rise table and a temperature fall table are used to calculate a temperature of a bearing from the rotational speed of the spindle every time a fixed time elapses. The temperature rise table stores in an associated manner the rotational speed of the spindle and a temperature rise of the bearing due to rotation of the spindle in a predetermined fixed time. The temperature fall table stores in an associated manner the temperature of the bearing and a temperature fall of the bearing due to heat dissipation in the fixed time.

公开(公告)号：US10189129B2

公开(公告)日：2019-01-29

申请号：US15270033

申请日：2016-09-20

申请人： FANUC Corporation

发明人： Gaku Isobe ,  Yuuzou Inaguchi ,  Naoki Sato

IPC分类号： B23Q3/157 ,  G05B19/29 ,  G05B19/406

摘要： A tool replacement apparatus according to the present invention includes: a turning tool magazine capable of attaching or removing a tool to/from a spindle of a machine tool; a tool replacement control unit which controls operations of turning the tool magazine and attaching or removing a tool to/from a spindle; and a setting unit which sets a rotatable range of the tool magazine. The tool replacement control unit includes: a determining unit which determines whether or not a designated rotation angle in an instruction for turning the tool magazine is within the rotatable range set by the setting unit; and a unit which stops an operation of replacing a tool when the determining unit determines that a designated rotation angle is out of a rotatable range.

公开(公告)号：US10092989B2

公开(公告)日：2018-10-09

申请号：US15097501

申请日：2016-04-13

申请人： FANUC Corporation

发明人： Gaku Isobe

IPC分类号： B23Q17/09 ,  B23Q17/00 ,  B23Q11/04 ,  B23Q3/157 ,  B23Q3/155

摘要： To provide a tool transfer apparatus including gripping force measuring unit for tool holding unit of a tool accommodation apparatus and a machining system including the tool transfer apparatus, a handling robot can perform operation of detaching a tool from a grip positioned at a tool attachment/detachment position of a tool magazine in a machine tool and transferring the tool to a tool stocker, and operation of transferring a tool from the tool stocker and attaching the tool to a grip positioned at the tool attachment/detachment position of the tool magazine. A hand portion of the handling robot is provided with a force sensor, which can detect a load applied to the hand portion. Also, a control apparatus of the handling robot and a control apparatus of the machine tool are connected via a data cable capable of transmission and reception of information.

公开(公告)号：US11619922B2

公开(公告)日：2023-04-04

申请号：US16843741

申请日：2020-04-08

申请人： FANUC CORPORATION

发明人： Gaku Isobe ,  Yoshihiro Watanabe ,  Hideaki Adachi

IPC分类号： G05B19/4063

摘要： An object is to provide a numerical control system of a machine tool which can check a parameter that needs to be adjusted for each of a spindle and a motor. A numerical control system of a machine tool includes a parameter check function unit for checking a drive control parameter of a spindle, and the parameter check function unit includes: an acceleration/deceleration time measurement unit which measures an acceleration/deceleration time that elapses after the spindle receives an acceleration command and/or a deceleration command until the completion of acceleration and/or the completion of deceleration; an acceleration/deceleration time specified value storage unit which stores a specified value of the acceleration/deceleration time that is previously determined for each specification of the machine tool; and a determination unit which compares the acceleration/deceleration time measured with the acceleration/deceleration time measurement unit and the specified value stored in the acceleration/deceleration time specified value storage unit so as to determine whether or not the drive control parameter of the spindle is proper.

公开(公告)号：US11194309B2

公开(公告)日：2021-12-07

申请号：US16439047

申请日：2019-06-12

申请人： FANUC CORPORATION

发明人： Gaku Isobe

IPC分类号： G05B19/40 ,  G05B19/4065

摘要： An abnormality detection device of a machine tool including a spindle and a feed axis and includes: a load monitoring unit that monitors a load of the spindle or the feed axis; a machining state determination unit that determines that the machine tool is in a machining state when the load of the spindle or the feed axis is equal to or larger than a threshold; a storage unit that stores shape data of the work and shape data of the tool in advance; an interfering area calculation unit that calculates an interfering area in which the tool interferes with the work based on the shape data of the work and the shape data of the tool; and an abnormality detection unit that detects an abnormality in the machine tool by comparing a position of the tool in relation to the work when it is determined that the machine tool is in the machining state with the calculated interfering area.

公开(公告)号：US11007615B2

公开(公告)日：2021-05-18

申请号：US16711885

申请日：2019-12-12

申请人： Fanuc Corporation

发明人： Gaku Isobe

IPC分类号： B23Q3/157 ,  G01N21/57 ,  G01B11/30 ,  B23Q17/09 ,  B23Q3/155 ,  B23Q17/24

摘要： A machine tool includes: a tool magazine that stores a plurality of tools; a spindle that holds one of the plurality of tools stored in the tool magazine; a glossiness measurement unit that measures glossiness of a tapered outer surface of a taper shank of each of the plurality of tools; a deterioration determination unit that determines whether or not the tapered outer surface is deteriorated on the basis of the glossiness measured by the glossiness measurement unit; and a notification unit that notifies an operator of deterioration of the tapered outer surface if it is determined by the deterioration determination unit that the tapered outer surface is deteriorated.

公开(公告)号：US20190027057A1

公开(公告)日：2019-01-24

申请号：US16038362

申请日：2018-07-18

申请人： FANUC CORPORATION

发明人： Yuuzou Inaguchi ,  Gaku Isobe ,  Yasuaki Koyama

IPC分类号： G09B19/00 ,  G06F3/14 ,  G06F3/0488

摘要： A display unit is controlled to display guidance such as to instruct an operator to move a spindle up and down near the Z-axis position at which the tool is transferred between a grip and the spindle and to observe a lateral movement of the tip of a tool at the same time. Then, when the tip of the tool moves laterally, the display unit is controlled to display guidance to instruct the operator to raise the spindle and turn a turret so as to reduce the lateral movement of the tip of the tool.

公开(公告)号：US11657490B2

公开(公告)日：2023-05-23

申请号：US17079633

申请日：2020-10-26

申请人： FANUC CORPORATION

发明人： Gaku Isobe

IPC分类号： G06T7/00 ,  G05B19/418 ,  G05B23/02

CPC分类号： G06T7/0004 ,  G05B19/4183 ,  G05B19/4185 ,  G05B23/0283

摘要： A control device, which controls a machine tool capable of alarm stop based on abnormality in machining load, includes: a photographing unit which photographs chips produced as a result of machining of a workpiece; a reference model determination unit which determines in advance a reference model of chips for determining as abnormality in machining, based on images of chips photographed within a predetermined period before alarm stop, in response to an occurrence of alarm stop; and a judgment unit which judges as abnormality occurrence in machining, in a case of a degree of similarity in chips photographed at a predetermined timing in machining later, relative to a reference model of chips that was determined.

公开(公告)号：US11161209B2

公开(公告)日：2021-11-02

申请号：US16794485

申请日：2020-02-19

申请人： FANUC CORPORATION

发明人： Gaku Isobe ,  Yoshihiro Watanabe

IPC分类号： B23Q3/157 ,  G05B19/4067 ,  B23Q3/155 ,  B23Q3/16

摘要： A machine tool includes a motor configured to rotate a spindle, a tool magazine holding a plurality of tools, and a controller. The controller has a storage unit storing motor information indicating that the motor is a synchronous motor. When the machine tool stops, while a tool exchange process is carried out, due to electric power outage, operation of a stop button, a value of a drive current of the motor, or a value output from the sensor, the controller uses a command for the synchronous motor, based on the motor information, as a part of a series of commands for recovery of the machine tool, where the tool exchange process is a process in which a tool attached to the spindle is changed with one of the plurality of tools of the tool magazine.