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    Fluctuation amount estimation device in machine tool and correction amount calculation device
    1.
    发明授权
    Fluctuation amount estimation device in machine tool and correction amount calculation device 有权

    公开(公告)号：US12117795B2

    公开(公告)日：2024-10-15

    申请号：US17605155

    申请日：2019-10-24

    Applicant: DMG MORI CO., LTD.

    Inventor： Koichiro Narimatsu ,  Naruhiro Irino ,  Masahiro Shimoike

    IPC: G05B19/404 ,  G06N3/08

    CPC classification number: G05B19/404 ,  G06N3/08 ,  G05B2219/41116

    Abstract: Provided are a fluctuation amount estimation device (9) capable of evaluating reliability of an estimated value and a correction amount calculation device (1) including the fluctuation amount estimation device (9). The correction amount calculation device (1) includes the fluctuation amount calculation device (9), a correction amount calculation unit (5), and a correction amount output unit (7). The fluctuation amount estimation device (9) includes a parameter storage (3) storing parameters as constituent elements of a neural network obtained by machine learning, an estimation unit (2) estimating a fluctuation amount relevant to a position of an element arranged in a machine tool (11) or a fluctuation amount of a distance between elements arranged in the machine tool (11) for each physical condition information of the machine tool (11) by means of the neural network with a parameter freely selected from the parameters being omitted, and a reliability evaluation unit (4) evaluating reliability of estimated multiple fluctuation amounts based on the estimated fluctuation amounts. The correction amount calculation unit (5) calculates a correction amount for the estimated fluctuation amounts based on the fluctuation amounts, and the correction amount output unit (7) outputs the calculated correction amount to outside.

    Vibration Suppression Device, Machine Tool, and Vibration Suppression Method
    3.
    发明申请
    Vibration Suppression Device, Machine Tool, and Vibration Suppression Method 审中-公开

    公开(公告)号：US20200088259A1

    公开(公告)日：2020-03-19

    申请号：US16471340

    申请日：2017-12-21

    Applicant: DMG MORI Co., Ltd.

    Inventor： Yosuke Higuchi ,  Yasuhiro Imabeppu ,  Tomohiro Tsuzuki ,  Naruhiro Irino ,  Yutaka Ido

    IPC: F16F7/108 ,  F16F15/02 ,  B23Q11/00 ,  B23Q1/01

    Abstract: There is provided a vibration suppression device, a machine tool including the device and a vibration suppression method using the device. The vibration suppression device includes a flexible member having a first position F fixed to the structure to be a fixed end of a cantilever and a second position on a free end side; and a weight attached to the flexible member in the second position. The vibration suppression device has an adjustment mechanism for changing a distance between the first position and the second position. Accordingly, it can effectively suppress vibration of a structure, and that can effectively suppress the vibration by easy adjustment when the characteristic of a generated vibration is different.

    Measuring apparatus
    5.
    发明授权
    Measuring apparatus 有权

    公开(公告)号：US11953307B2

    公开(公告)日：2024-04-09

    申请号：US17623828

    申请日：2020-07-10

    Applicant: DMG MORI CO., LTD.

    Inventor： Naruhiro Irino ,  Masahiro Shimoike

    IPC: G01B11/00 ,  G01B11/03 ,  G06T7/70

    CPC classification number: G01B11/002 ,  G01B11/03 ,  G06T7/70 ,  G06T2207/30164

    Abstract: A measuring apparatus for measuring a planar relative motion between a tool attacher and a work attacher of a machine tool includes at least one image capturing element capable of performing image capturing at a first position, a second position, and a third position, which are not located on the same line. The image capturing elements at the first position, the second position, and the third position are caused to capture a first point, a second point, and a third point, respectively, arranged on at least one plane of an XY-plane, an XZ-plane, and a YZ-plane. The image capturing element at the second position and the image capturing element at the third position are caused to capture the first point, the image capturing element at the first position and the image capturing element at the third position are caused to capture the second point, and the image capturing element at the first position and the image capturing element at the second position are caused to capture the third point. Based on the image capturing result, a value indicating the planar relative motion between the tool attacher and the work attacher is calculated.

    Thermal displacement correction method for machine tool
    6.
    发明授权
    Thermal displacement correction method for machine tool 有权

    公开(公告)号：US11809156B2

    公开(公告)日：2023-11-07

    申请号：US17289867

    申请日：2019-10-08

    Applicant: DMG MORI CO., LTD.

    Inventor： Naruhiro Irino ,  Koichiro Narimatsu

    IPC: G05B19/404 ,  B23Q15/18 ,  G05B13/02

    CPC classification number: G05B19/404 ,  B23Q15/18 ,  G05B13/0265 ,  G05B2219/49207

    Abstract: Provided is a thermal displacement correction method using a machine learning method but making it possible to, on a user side, calculate a thermal displacement amount appropriate to a machine tool of the user and correct the thermal displacement. In a machine tool on a target user side, a thermal displacement amount between workpiece and tool corresponding to a temperature at a preset measurement point is calculated based on a parameter defining a relation between the temperature and the thermal displacement amount, and a positioning position for workpiece and tool is corrected in accordance with the calculated thermal displacement amount. On a manufacturer side, operational status information of the machine tool on the target user side is obtained, an operational status identical to the obtained operational status on the target user side is reproduced with a machine tool of a same type as the machine tool on the target user side based on the obtained operational status information, a temperature at a measurement point identical to the measurement point on the machine tool on the target user side and a thermal displacement amount between workpiece and tool are measured during reproduction, and the parameter is calculated by machine learning based on the measured temperature and thermal displacement amount. The parameter in the machine tool on the target user side is updated with the calculated parameter.

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