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公开(公告)号：US20210354234A1
公开(公告)日：2021-11-18
申请号：US17292719
申请日：2019-01-21
发明人： Nobuaki TANAKA , Teruaki FUKUOKA
摘要： A processing state detecting device for detecting a processing state of a workpiece processed by laser processing includes: a sound collecting unit that measures sound while the workpiece is being processed by laser processing; an installation position evaluating unit that determines whether an installation position of the sound collecting unit needs to be changed, on the basis of the sound measured by the sound collecting unit; and an evaluation result informing unit that provides information on a result of evaluation of the installation position evaluating unit.
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公开(公告)号：US20190086900A1
公开(公告)日：2019-03-21
申请号：US15781218
申请日：2017-02-15
发明人： Kenta FUJII , Hidetoshi IKEDA , Teruaki FUKUOKA
IPC分类号： G05B19/414 , G05D3/12 , G05B19/19 , H02P5/46 , B23Q1/44
摘要： A servo control device controls a combined position of a first servo system and a second servo system having higher response than response of the first servo system. The servo control device includes a first axis target value creation unit and a correction unit. The first axis target value creation unit creates a first axis target value based on a combined command value which is a position command value of the combined position. The correction unit converts the first axis target value into a first axis command value by using a first transfer function. In addition, the correction unit converts the first axis target value by using a second transfer function, and calculates a second axis command value by subtracting the converted first axis target value from the combined command value. The product of the first transfer function and a first model transfer function which models characteristics of the first servo system is equal to the product of the second transfer function and a second model transfer function which models characteristics of the second servo system.
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公开(公告)号：US20200290155A1
公开(公告)日：2020-09-17
申请号：US16464273
申请日：2017-02-14
发明人： Taichiro TAMIDA , Shingo TSUDA , Teruaki FUKUOKA , Hiroshi IKARASHI , Akihiko IWATA , Takeshi MORIMOTO
IPC分类号： B23K26/352 , H01S5/062 , H01S5/068
摘要： A laser diode driving power source of a laser machining device that radiates laser light emitted from an LD to a workpiece to machine the workpiece includes a power converter including a switching device, to supply a current to the LD, and a control unit to control a switching operation of the switching device. A value smaller than a value that is n times a time constant for laser machining is set as a switching period of the switching device in the control unit, the n is larger than 1, and the time constant for laser machining is a value obtained by dividing a surface roughness required for machining of the workpiece by a moving velocity of the workpiece.
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公开(公告)号：US20230124877A1
公开(公告)日：2023-04-20
申请号：US17918910
申请日：2020-05-20
发明人： Teruaki FUKUOKA , Nobuaki TANAKA
IPC分类号： G05B19/418
摘要： A data generation device includes a large-scale data acquisition unit that obtains large-scale data that is large-scale learning data used in learning of a first determination model for determining a machining state of a workpiece machined by a first machine tool; an adaptive data acquisition unit that obtains adaptive data for use in generation of learning data for use in learning of a second determination model for determining a machining state of a workpiece machined by a second machine tool; and a learning data generation unit that converts the large-scale data based on the adaptive data to generate adapted large-scale data for use in learning of the second determination model.
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公开(公告)号：US20220147036A1
公开(公告)日：2022-05-12
申请号：US17604450
申请日：2020-02-25
发明人： Masaki SEGUCHI , Kyohei ISHIKAWA , Teruaki FUKUOKA
摘要： A machining failure detection device includes a machining light measurement unit that measures machining light generated at a machining point during machining; a machining sound measurement unit that measures machining sound generated at the machining point; and a computation unit that determines whether a machining failure has occurred in the machining. The computation unit includes a feature extraction unit, a determination value calculation unit, and a determination unit. The feature extraction unit extracts a machining light feature from a machining light signal measured by the machining light measurement unit, and extracts a machining sound feature from a machining sound signal measured by the machining sound measurement unit. The determination value calculation unit calculates a combined failure determination value on the basis of the machining light feature and the machining sound feature. The determination unit compares the combined failure determination value with a determination criterion to determine a failure.
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公开(公告)号：US20190356109A1
公开(公告)日：2019-11-21
申请号：US16342995
申请日：2017-04-17
发明人： Shingo TSUDA , Takeshi MORIMOTO , Taichiro TAMIDA , Teruaki FUKUOKA , Hiroshi IKARASHI , Akihiko IWATA
摘要： A laser diode-driving power supply includes a constant current source that supplies current to LDs, a switching element connected in parallel to the LDs, and a control unit that controls the constant current source and performs on-off control of the switching element. The control unit compares a first current command value and a second current command value for controlling current output from the constant current source, and when the second current command value input after the first current command value is smaller than the first current command value, applies to the LDs a voltage in the range of a voltage at which current flows through the LDs to a voltage less than the lasing threshold of the LDs when there is no output from the LDs.
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