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    Machine tool and control device for machine tool
    1.
    发明授权
    Machine tool and control device for machine tool 有权

    公开(公告)号：US12214434B2

    公开(公告)日：2025-02-04

    申请号：US17437284

    申请日：2020-05-22

    Applicant: CITIZEN WATCH CO., LTD. ,  CITIZEN MACHINERY CO., LTD.

    Inventor： Kazuhiko Sannomiya

    IPC: B23G1/02 ,  B23Q15/013 ,  G05B19/4093 ,  B23B25/02 ,  B23G1/04

    Abstract: A machine tool and a control device for the machine tool for shortening the machining time of a workpiece in a case where the relative and reciprocal vibration of workpiece holder and tool post in the radial direction of the workpiece is stopped during a period from an initial point until when the workpiece and the cutting tool come into contact with each other is provided. In the machine tool, when threading the workpiece to form a threaded portion on the workpiece by relatively moving the workpiece and the cutting tool in the feed direction while relatively rotating the workpiece and the cutting tool 130 to perform multiple times of cutting processes along the same cutting path in a predetermined spiral form, the cutting tool is brought closer toward the workpiece in the feed direction from a predetermined initial point at which the workpiece and the cutting tool are separated from each other, the workpiece and the cutting tool come into contact with each other, and the threading is started with the contact. During the period from the initial point until when the workpiece and the cutting tool come into contact with each other, a controller stops the vibration of the cutting tool, and, in continuous cutting processes in the multiple times of cutting processes in the threading, the control means sets a phase position of the tool post in the vibration direction and stops the reciprocal vibration so that, when the workpiece and the cutting tool come into contact with each other, each of the continuous cutting processes has a predetermined phase in the reciprocal vibration relative to a rotation phase of the workpiece at the start of the threading.

    CONTROL DEVICE FOR MACHINE TOOL
    2.
    发明申请
    CONTROL DEVICE FOR MACHINE TOOL 有权

    公开(公告)号：US20210101240A1

    公开(公告)日：2021-04-08

    申请号：US17021820

    申请日：2020-09-15

    Applicant: FANUC CORPORATION

    Inventor： Yuutarou HORIKAWA ,  Masashi YASUDA ,  Kenta YAMAMOTO

    IPC: B23Q15/013 ,  B23G11/00 ,  B23G1/04 ,  B23Q15/08 ,  B23Q17/20

    Abstract: To provide a control device for a machine tool capable of performing thread cutting while reducing the load on the machine tool from the oscillating operation, without extending the cycle time, and capable of reliably shredding chips in a case of performing the non-oscillating operation in the present pass after the oscillating operation in the previous pass. A control device for a machine tool includes: an oscillating operation execution determination unit that determines whether to execute an oscillating operation that causes the cutting tool to oscillate in the radial direction of the workpiece; an oscillation command generation unit that generates an oscillation command of the oscillating operation based on a determination result; a control unit that superimposes the oscillation command on a position command of the feed axis to generate a drive command. The oscillating operation execution determination unit determines to intermittently execute the oscillating operation, and the oscillation command generation unit generates an oscillation command so that a non-oscillating cutting portion of a present pass includes a portion at which oscillating cutting was performed in a previous pass, or so that an oscillating cutting portion of the present pass includes a portion at which non-oscillating cutting was performed in the previous pass.

    Machine tool
    3.
    发明授权
    Machine tool 有权

    公开(公告)号：US10409267B2

    公开(公告)日：2019-09-10

    申请号：US15299814

    申请日：2016-10-21

    Applicant: Okuma Corporation

    Inventor： Kohei Nishimura

    IPC: G05B19/416 ,  G05B19/402 ,  G05B19/18 ,  B23G1/04

    Abstract: A main spindle controller of a machine tool varies a rotation speed of a main spindle that grips a workpiece to a varied maximum speed higher than a reference rotation speed set value as a set value of a reference rotation speed by a variation width set value as a set value of a variation width or a varied minimum speed lower than the reference rotation speed set value by the variation width set value in units of the tool path. At the same time, the main spindle controller refers to speed condition information that indicates a condition of the preliminarily stored reference rotation speed and variation width assuming that a chatter vibration is to be reduced, and when at least one of the reference rotation speed set value and the variation width set value does not satisfy the condition of the speed condition information.

    Machine tool for threading processes
    4.
    发明授权
    Machine tool for threading processes 有权

    公开(公告)号：US09662727B2

    公开(公告)日：2017-05-30

    申请号：US14052018

    申请日：2013-10-11

    Applicant: OKUMA CORPORATION

    Inventor： Kohei Nishimura

    IPC: B23G1/04 ,  B23G3/00

    CPC classification number: B23G1/04 ,  B23G3/00 ,  G05B2219/49392

    Abstract: A machine tool includes a first-pass rotation speed computing section. The first-pass rotation speed computing section automatically decides whether the main spindle rotation speed in the first pass should be a high rotation speed or a low rotation speed so that cutting in the last tool pass is performed at the high rotation speed. Thus, cutting of the last tool pass at the low rotation speed can be reliably prevented.

    THREADING MACHINE FOR THE CONNECTION OF DEFORMED REINFORCING BARS
    5.
    发明申请
    THREADING MACHINE FOR THE CONNECTION OF DEFORMED REINFORCING BARS 审中-公开
    用于连接变形钢筋的螺纹加工机

    公开(公告)号：US20100113172A1

    公开(公告)日：2010-05-06

    申请号：US12609214

    申请日：2009-10-30

    Applicant: Jean-Jacques BRAUN

    Inventor： Jean-Jacques BRAUN

    IPC: B23G1/52 ,  B23G1/04

    CPC classification number: B23B5/12 ,  B21H3/04 ,  B23B2215/68 ,  B23G1/04 ,  B23P23/02 ,  B23P23/04 ,  E04C5/165 ,  Y10T408/38 ,  Y10T408/3833 ,  Y10T408/5633

    Abstract: A threading machine for the end threading of long metal bars includes a peeler and a threader mounted co-axially on a spindle. The spindle is powered by a motor. A leading rod is attached to the clamping chariot. The leading rod includes the peeler opening and closing controller, and the threader opening and closing controller. The controllers are supported by a carriage set, and the threader is able to travel forward and backward. The peeler opening controller and threader opening controller are adjustable by moving them along leading rod to accommodate various thread length.

    Abstract translation: 用于长金属棒末端穿线的穿线机包括同轴安装在主轴上的剥皮机和穿线机。 主轴由电机供电。 前导杆连接到夹具上。 前导杆包括剥皮机打开和关闭控制器以及穿线器打开和关闭控制器。 控制器由托架组支撑，并且穿线机能够向前和向后行进。 剥皮器打开控制器和穿线器打开控制器可以通过沿着前导杆移动来调节，以适应各种螺纹长度。

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