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    DEVICE AND METHOD FOR CORRECTING CONCENTRICITY OF MACHINE TOOL SPINDLE
    3.
    发明公开
    DEVICE AND METHOD FOR CORRECTING CONCENTRICITY OF MACHINE TOOL SPINDLE 审中-实审

    公开(公告)号：EP4434672A1

    公开(公告)日：2024-09-25

    申请号：EP23892783.4

    申请日：2023-02-03

    申请人： DN Solutions Co., Ltd.

    发明人： SIM, Jaedoo ,  CHOI, Hyunmin

    IPC分类号： B23Q15/22 ,  B23Q17/22

    摘要： A method of correcting concentricity of a main spindle of a machine tool includes recording a reference tool length and a parallelism error, setting a half of the parallelism error as a concentricity correction constant of the reference tool, calculating an additional concentricity correction amount of the main spindle for an expected tool by adding or subtracting a parallelism error of the reference tool in proportion to a length difference between the reference tool and the expected tool, calculating a concentricity error correction amount of the main spindle for the expected tool by adding the concentricity correction constant of the reference tool, and correcting a parallelism error of the main spindle by executing a command of moving the main spindle by the concentricity correction amount in the X axis direction.

    METHOD FOR MANUFACTURING PANELS
    4.
    发明公开
    METHOD FOR MANUFACTURING PANELS 审中-实审

    公开(公告)号：EP4375035A3

    公开(公告)日：2024-07-31

    申请号：EP24169103.9

    申请日：2020-12-09

    申请人： Unilin, BV

    发明人： Naeyaert, Christophe

    IPC分类号： B23Q17/22 ,  B23Q17/24 ,  B27F1/02 ,  B27F1/06 ,  B27M1/08 ,  B27M3/04

    CPC分类号： B23Q17/2233 ,  B27M3/04 ,  B27F1/06 ,  B27F1/02 ,  B27M1/08 ,  B23Q17/249

    摘要： Method for manufacturing panels, wherein the panels (1A) concerned are subjected on at least one side (2-3;4-5) to an operation (S1-S2) with cutting tools (6), characterized in that the position and/or orientation of each panel (1A) is determined prior to the operation (S1-S2), and that the position and/or orientation of each panel (1A) is adjusted prior to the operation (S1) and/or the position of the tools (6) is potentially adjusted, such that at least one part of each panel (1A) concerned takes a fixed orientation and position in relation to said tools (6).

    A SYSTEM AND A METHOD FOR DETERMINING CONTACT BETWEEN A CUTTING TOOL AND AN ELECTRICALLY CONDUCTIVE WORKPIECE
    7.
    发明公开
    A SYSTEM AND A METHOD FOR DETERMINING CONTACT BETWEEN A CUTTING TOOL AND AN ELECTRICALLY CONDUCTIVE WORKPIECE 审中-公开

    公开(公告)号：EP4159368A1

    公开(公告)日：2023-04-05

    申请号：EP21199706.9

    申请日：2021-09-29

    申请人： Seco Tools AB

    发明人： Karim, Amir

    IPC分类号： B23Q17/22

    摘要： The invention relates to a system for determining contact between a cutting tool (10) and an electrically conductive workpiece (20). The cutting tool (10) comprises a toolholder (11) and n cutting inserts (12,13,14,15) mounted in the toolholder (11), wherein n is an integer ≥ 2, wherein each of the n cutting inserts (12,13,14,15) comprises an electrically conductive surface layer. Each of the n cutting inserts (12,13,14,15) are electrically insulated from the toolholder (11). The system further comprises an electric power source (31) and each of the n cutting inserts (12,13,14,15) are connected in parallel to a first pole (48) of the electric power source (31) via a respective first connection unit (32,33,34,35) comprising a resistor (44,45,46,47). The system further comprises a second connection unit (49) connected to a second pole of the electric power source (31). The second connection unit (49) being configured to be electrically connected to an electrically conductive workpiece (20). The system further comprises a measuring unit (60) being operatively connected to an analysis unit (70). The measuring unit (60) is configured to measure an electrical voltage (U R44 ,U R45 ,U R46 ,U R47 ) over each of the first connection units (32,33,34,35), and the analysis unit (70) is configured to determine a contact between the cutting tool (10) and an electrically conductive workpiece (20) based on the measured electrical voltages (U R44 ,U R45 ,U R46 ,U R47 ). The invention also relates to a method for determining contact between a cutting tool (10) and an electrically conductive workpiece (20).