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公开(公告)号：US20170207734A1
公开(公告)日：2017-07-20
申请号：US15324799
申请日：2015-07-24
申请人： THK CO., LTD.
发明人： Shuhei Yamanaka , Yuki Nomura , Tsuyoshi Inda
IPC分类号： H02P5/68 , H02P7/02 , H02K41/035
CPC分类号： H02P5/68 , B30B1/42 , B30B15/148 , H02K41/035 , H02P5/46 , H02P7/02 , H02P25/06
摘要： This linear motor apparatus includes: a first linear motor and a second linear motor, movable bodies of which move in the same direction in a linked manner; a first control portion that causes the first linear motor to produce thrust to apply a load to a pressurizing target via the movable bodies; and a second control portion that causes the second linear motor to produce thrust and controls the thrust, wherein, if the first control portion is causing a load to be applied to the pressurizing target, then the second control portion causes the second linear motor to produce thrust that cancels an external force produced to the movable bodies.
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公开(公告)号：US20220201532A1
公开(公告)日：2022-06-23
申请号：US17604899
申请日：2020-04-24
申请人： THK CO., LTD.
发明人： Shuhei Yamanaka , Masatomo Tokuno
IPC分类号： H04W28/02
摘要： The processing apparatus performs predetermined processing for measurement data transmitted from the sensor, in which the processing apparatus acquires transmission destination information indicating a predetermined area in a server apparatus in an outside in which processed data subjected to the predetermined processing is to be stored, from a relay apparatus that performs relay processing between the processing apparatus and the server apparatus in order to transmit the processed data from the processing apparatus to the server apparatus, when the relay apparatus is communicatively connected to the communication unit in a state before building of a network between the processing apparatus and the server apparatus, and generates, after the acquisition of the transmission destination information, transmission-processed data in a form in which the relay apparatus is able to execute the relay processing, by adding information relating to the predetermined area indicated by the transmission destination information to the processed data.
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公开(公告)号：US11242919B2
公开(公告)日：2022-02-08
申请号：US16771016
申请日：2018-12-11
申请人： THK CO., LTD. , DISCO Corporation
IPC分类号： F16H25/20 , F16H25/22 , F16H25/24 , H02P29/024
摘要： An object of the present invention is to preferably detect the failure accompanied with the decrease in the pre-load in a ball screw unit. The failure diagnosis is performed for the ball screw unit on the basis of a combination of a resonance frequency in an axial direction of a predetermined machine assembly including the ball screw unit and a motor and a position of a nut member on a screw shaft corresponding to the resonance frequency as provided when the screw shaft is driven and rotated by the motor.
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公开(公告)号：US10972036B2
公开(公告)日：2021-04-06
申请号：US15746906
申请日：2016-07-27
申请人： THK CO., LTD.
发明人： Junichi Sakai , Shuhei Yamanaka , Hideo Saito , Yuki Nomura , Hideya Nakayama
IPC分类号： H02P25/064 , F16D63/00 , F16D65/14 , H02P3/26 , F16D121/22 , F16D125/58
摘要： A control device for controlling a linear actuator having a linear motor and a brake device includes a magnetic pole position estimation means to estimate which of a plurality of sections obtained by dividing a magnetic pole position of 0° to 360°, the mover is located in on the basis of a direction of movement of the mover by pulse energization, a magnetic pole position setting means to perform direct current excitation at an estimated magnetic pole position estimated by the magnetic pole position estimation means and set the estimated magnetic pole position as a magnetic pole position of the mover, and a brake control means to turn on a brake device before pulse energization by the magnetic pole position estimation means is performed and turn off the brake device after the magnetic pole position estimation means estimates the section in which the mover is located.
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公开(公告)号：US10712236B2
公开(公告)日：2020-07-14
申请号：US16344433
申请日：2017-10-19
申请人： THK CO., LTD.
发明人： Yoshiyuki Honjo , Shuhei Yamanaka
摘要： Provided is a state diagnosis system, which is applied to a rolling guide device in which a moving member including an endless circulation path for rolling elements is freely movable along a track member, and which is configured to appropriately recognize a state of a rolling surface of the track member. The state diagnosis system includes: a sensor configured to detect a physical quantity exhibited when the moving member is moving along the track member; a signal processing unit configured to process an output signal from the sensor to output analysis data; and a determination processing unit configured to compare the analysis data with threshold value data to determine whether or not the rolling guide device has an abnormality. Further, when a cycle at which each of the rolling elements, which moves back and forth in the endless circulation path, enters a loadpath from a no-loadpath is represented by t, a data collection time period T, for which the signal processing unit takes in the output signal from the sensor, is set to satisfy T≥t.
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公开(公告)号：US10801919B2
公开(公告)日：2020-10-13
申请号：US16323330
申请日：2017-06-26
申请人： THK CO., LTD.
发明人： Yoshiyuki Honjo , Shuhei Yamanaka
IPC分类号： G01M13/00 , G01H17/00 , G01M13/045 , G01M13/028 , G01H1/00 , G01M15/12
摘要： A fault detection sensor-equipped actuator is provided which can easily detect a fault in at least one of a linear guide unit and a ball screw unit, using a shared sensor. In an actuator (10) including a linear guide unit (4) that guides linear movement of a movable body (1) and a ball screw unit (7) that drives the movable body (1) in an axial direction of a screw shaft (6), a sensor (18) configured to detect a fault in the actuator (10) is placed in a housing (11) where a coupling (12) that couples the screw shaft (6) and a motor (14) for rotating the screw shaft (6) is housed.
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公开(公告)号：US20200056961A1
公开(公告)日：2020-02-20
申请号：US16344433
申请日：2017-10-19
申请人： THK CO., LTD.
发明人： Yoshiyuki Honjo , Shuhei Yamanaka
摘要： Provided is a state diagnosis system, which is applied to a rolling guide device in which a moving member including an endless circulation path for rolling elements is freely movable along a track member, and which is configured to appropriately recognize a state of a rolling surface of the track member. The state diagnosis system includes: a sensor configured to detect a physical quantity exhibited when the moving member is moving along the track member; a signal processing unit configured to process an output signal from the sensor to output analysis data; and a determination processing unit configured to compare the analysis data with threshold value data to determine whether or not the rolling guide device has an abnormality. Further, when a cycle at which each of the rolling elements, which moves back and forth in the endless circulation path, enters a loadpath from a no-loadpath is represented by t, a data collection time period T, for which the signal processing unit takes in the output signal from the sensor, is set to satisfy T≥t.
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公开(公告)号：US20140333236A1
公开(公告)日：2014-11-13
申请号：US14362849
申请日：2012-12-05
申请人： THK CO., LTD.
发明人： Shuhei Yamanaka , Yuki Nomura
IPC分类号： H02P6/00
CPC分类号： H02P6/006 , H02K41/031 , H02P25/06 , H05K13/0413
摘要： A linear motor device includes a linear motor and a control unit configured to apply a load to a pressurizing object by causing a movable part of the linear motor to move. After causing the movable part to move toward the pressurizing object at a predetermined first speed based on position control, the control unit controls the movable part to move by performing deceleration to a second speed which is slower than the first speed and at which the pressure applied to the pressurizing object is less than or equal to a predetermined pressure when the movable part starts to apply the pressure to the pressurizing object, and the control unit causes the movable part to move until the current flowing through the linear motor is greater than or equal to a predetermined current limit value.
摘要翻译： 线性电动机装置包括线性电动机和控制单元，其被配置为通过使线性电动机的可动部分移动来对加压物体施加负载。 在基于位置控制使可动部以预定的第一速度朝向加压物体移动之后，控制单元通过进行减速到第一速度而使其移动到比第一速度慢的第二速度，施加压力 当可移动部分开始向加压物体施加压力时，加压物体的压力小于或等于预定压力，并且控制单元使可动部件移动直到流过线性电动机的电流大于或等于 达到预定电流极限值。
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公开(公告)号：US12130261B2
公开(公告)日：2024-10-29
申请号：US17605316
申请日：2020-04-24
申请人： THK CO., LTD.
发明人： Shuhei Yamanaka , Katsuya Iida , Takuya Sakamoto , Yoshiyuki Honjo , Hiroshi Inoko , Masatomo Tokuno , Satoru Nagai
摘要： An abnormality diagnosis system that diagnoses an abnormality related to each control shaft in equipment in which the plurality of control shafts, each including a motor and an output unit driven by the motor, are incorporated, includes: a plurality of vibration sensors that are provided for the plurality of control shafts, respectively, and that detect vibration occurring in connection with driving of the motor corresponding to each control shaft; a calculation unit that calculates, for each of the plurality of control shafts, vibration levels in a plurality of predetermined frequency ranges, based on vibration information detected by each of the plurality of vibration sensors; and a diagnosis unit that diagnoses an abnormality related to each control shaft, based on a distribution state, across the plurality of predetermined frequency ranges and across the plurality of control shafts, of the vibration levels calculated by the calculation unit.
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公开(公告)号：US20220214311A1
公开(公告)日：2022-07-07
申请号：US17605316
申请日：2020-04-24
申请人： THK CO., LTD.
发明人： Shuhei Yamanaka , Katsuya Iida , Takuya Sakamoto , Yoshiyuki Honjo , Hiroshi Inoko , Masatomo Tokuno , Satoru Nagai
摘要： An abnormality diagnosis system that diagnoses an abnormality related to each control shaft in equipment in which the plurality of control shafts, each including a motor and an output unit driven by the motor, are incorporated, includes: a plurality of vibration sensors that are provided for the plurality of control shafts, respectively, and that detect vibration occurring in connection with driving of the motor corresponding to each control shaft; a calculation unit that calculates, for each of the plurality of control shafts, vibration levels in a plurality of predetermined frequency ranges, based on vibration information detected by each of the plurality of vibration sensors; and a diagnosis unit that diagnoses an abnormality related to each control shaft, based on a distribution state, across the plurality of predetermined frequency ranges and across the plurality of control shafts, of the vibration levels calculated by the calculation unit.
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