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公开(公告)号：US11237213B2
公开(公告)日：2022-02-01
申请号：US16909021
申请日：2020-06-23
Applicant: Fanuc Corporation
Inventor： Yohei Kamiya
IPC: G01R31/34
Abstract: A motor information acquisition system is provided that acquires information representing an operation state of a motor included in a machine tool in order to monitor a state of the machine tool and that includes a motor control device configured to control the motor based on control data, a timing generation section configured to generate acquisition timing of the information representing the operation state of the motor based on the control data, a rotor magnetic flux reduction command output section configured to output a command for reducing a magnetic flux density of a rotor of the motor to the motor control device when the acquisition timing is reached, and a motor information acquisition section configured to acquire information representing the operation state of the motor when the magnetic flux density of the rotor is reduced by the command.
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公开(公告)号：US11080610B2
公开(公告)日：2021-08-03
申请号：US16141133
申请日：2018-09-25
Applicant: Fanuc Corporation
Inventor： Kazunori Iijima , Kazuhiro Satou , Yohei Kamiya
IPC: G06N5/04 , G06N20/00 , G05B19/4063 , G05B19/408
Abstract: A numerical control system detects a state amount indicating an operation state of a machine tool, creates a characteristic amount that characterizes the state of a machining operation from the detected state amount, infers an evaluation value of the operation state of the machine tool from the characteristic amount, and detects an abnormality in the operation state of the machine tool on the basis of the inferred evaluation value. The numerical control system generates and updates a learning model by machine learning that uses the characteristic amount, and stores the learning model in correlation with a combination of conditions of the machining operation of the machine tool.
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公开(公告)号：US10519968B2
公开(公告)日：2019-12-31
申请号：US16127312
申请日：2018-09-11
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
Abstract: A motor includes a facing member having a part facing a rotary shaft, a seal member having elasticity, and an annular member supporting the seal member. Magnets are disposed on the outer circumferential surface of the rotary shaft. Coil units are disposed on the inner circumferential surface of the annular member. The annular member is rotated by a magnetic force in the same direction as the rotary shaft when the rotary shaft rotates. The seal member rotates with the annular member at a rotation speed that is lower than a rotation speed of the rotary shaft.
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14.发明授权公开(公告)号：US10447104B2
公开(公告)日：2019-10-15
申请号：US15082236
申请日：2016-03-28
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
Abstract: A spindle structure capable of accelerating the flow of a fluid in through holes of a rotor. The spindle structure includes a rotatable rotation part. The rotation part includes a tool holding part provided at an axial direction one end of the rotation part and through holes that penetrate the rotation part and open at the end in the axial direction. Further the spindle structure includes a vane provided in the through holes. When the rotation part rotates, the vane rotates with the rotation part to allow a fluid in the interior of the through holes to flow toward the end in the axial direction.
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公开(公告)号：US20190078577A1
公开(公告)日：2019-03-14
申请号：US16127312
申请日：2018-09-11
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
Abstract: A motor includes a facing member having a part facing a rotary shaft, a seal member having elasticity, and an annular member supporting the seal member. Magnets are disposed on the outer circumferential surface of the rotary shaft. Coil units are disposed on the inner circumferential surface of the annular member. The annular member is rotated by a magnetic force in the same direction as the rotary shaft when the rotary shaft rotates. The seal member rotates with the annular member at a rotation speed that is lower than a rotation speed of the rotary shaft.
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Patent Agency Ranking
16.发明申请公开(公告)号：US20180313403A1
公开(公告)日：2018-11-01
申请号：US15959952
申请日：2018-04-23
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
CPC classification number: F16C19/527 , F16C19/52 , F16C19/525 , F16C33/44 , G05B19/182 , G05B19/406 , G05B2219/37375 , G05B2219/37435 , G05B2219/50186 , G07C3/00 , G07C3/08
Abstract: A failure detection device includes a formaldehyde sensor that detects the generation of formaldehyde, a vibration sensor that detects vibration of a spindle head, and a machine controller that detects the occurrence of an abnormality of a spindle bearing. The machine controller determines the occurrence of the abnormality of the spindle bearing and a cause of the abnormality based on a change in the output value of the formaldehyde sensor over time and a change in the output value of the vibration sensor over time.
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公开(公告)号：US20180115212A1
公开(公告)日：2018-04-26
申请号：US15725365
申请日：2017-10-05
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
CPC classification number: H02K5/10 , B01D45/14 , B08B5/02 , B08B17/02 , B23Q11/08 , H02K5/124 , H02K7/14 , H02K7/145 , H02K9/26 , H02K15/00 , H02K2205/09
Abstract: A front housing of an electric motor includes an air discharging member for discharging air toward a rotary shaft. The front housing includes an annular first air chamber that is formed in the air discharging member, and an annular second air chamber that is formed outside the first air chamber. The front housing includes an air supply path for supplying compressed air to the second air chamber, and a connection flow passage for causing the first air chamber to communicate with the second air chamber. The connection flow passage is formed at a position other than a position of the air supply path in the circumferential direction of the housing.
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公开(公告)号：US11522396B2
公开(公告)日：2022-12-06
申请号：US16903666
申请日：2020-06-17
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
Abstract: A rotor includes: a rotor core; a plurality of plate-shaped magnets forming multiple poles, each arranged in the rotor core with a pair of magnetic pole faces thereof being positioned in a direction intersecting with the radial direction of the rotor core; and a plurality of voids formed in the rotor core, each arranged in contact with the magnetic pole face that is located on a side closer to the central axis of the rotor core, of each of the magnets forming multiple poles.
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公开(公告)号：US11190067B2
公开(公告)日：2021-11-30
申请号：US16459695
申请日：2019-07-02
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
Abstract: A rotor core of a magnet-embedded electric motor includes a first tubular member and a second tubular member coaxially fixed to a shaft. The first tubular member includes a magnet fixing hole in which the magnet is fixed and a recess formed in an outer circumferential surface. The second tubular member includes a magnet fixing hole in which the magnet is fixed. The magnet fixing hole includes an arrangement region where the magnet is arranged, and an escape region having a size that allows magnet fixing agent to accumulate. The arrangement region of the first tubular member communicates with the arrangement region of the second tubular member, and the recess of the first tubular member communicates with the escape region of the second tubular member.
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公开(公告)号：US10698381B2
公开(公告)日：2020-06-30
申请号：US16045948
申请日：2018-07-26
Applicant: FANUC CORPORATION
Inventor： Yohei Kamiya
IPC: G05B19/40 , G05B19/404
Abstract: A numerical control method at least controls a spindle motor of a machine tool so as to perform machining in accordance with machining conditions. In the method, vibration occurring in a tool is acquired with a vibration acquisition unit, and the machining on a workpiece performed by a machining control unit is stopped when vibration having a predetermined amplitude or greater occurs in the tool. Based on state data indicating the state of the spindle motor at that time, multiple compensation plans for compensating the state of the spindle motor in order to suppress vibration occurring in the tool are calculated. The thus calculated multiple compensation plans are displayed on a display unit together with the state of the spindle motor at the time of occurrence of vibration having the predetermined amplitude or greater in the tool.
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