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    MACHINE TOOL
    3.
    发明申请
    MACHINE TOOL 审中-公开

    公开(公告)号：US20180281082A1

    公开(公告)日：2018-10-04

    申请号：US15924667

    申请日：2018-03-19

    申请人： FANUC CORPORATION

    发明人： Naoya ISHIYAMA

    IPC分类号： B23B31/26

    CPC分类号： B23B31/263 ,  B23B2231/50 ,  B23B2260/02 ,  B23Q3/15534 ,  B23Q17/003 ,  Y10T409/309464 ,  Y10T483/1795

    摘要： A machine tool includes: a column; a spindle head supported by the column; a spindle in the spindle head; a draw bar moved upward to clamp a tool to the lower end portion of the spindle and moved downward to release the tool therefrom; a biasing portion biasing the draw bar upward; a cam mechanism including a cam in the column and an arm whose one end slides on a cam surface such that the other end pushes down the draw bar; a measurement portion measuring the position of the draw bar; a storage portion storing a position relationship between the spindle head and the draw bar when the cam mechanism is normal; and an abnormality determination portion determining an abnormality in the cam mechanism based on the position of the draw bar measured with the measurement portion and the relationship stored in the storage portion.

    Electric spindle for numerical control machines
    5.
    发明授权
    Electric spindle for numerical control machines 有权

    公开(公告)号：US09751170B2

    公开(公告)日：2017-09-05

    申请号：US14394722

    申请日：2013-04-17

    申请人： FCS SYSTEM S.r.l.

    发明人： Andrea Calzavara ,  Almerino Canuto

    IPC分类号： B23B31/26 ,  B23Q1/70 ,  B23Q5/04 ,  B23C1/02 ,  B23Q5/10 ,  B23Q3/12 ,  B23Q5/00

    CPC分类号： B23Q1/70 ,  B23B31/263 ,  B23C1/02 ,  B23C2260/08 ,  B23C2270/022 ,  B23Q3/12 ,  B23Q5/048 ,  B23Q5/10 ,  B23Q2005/005 ,  Y10T409/309352 ,  Y10T409/309408 ,  Y10T409/309464

    摘要： Electric spindle for numerical control machines structured to lock and rotationally drive a tool about a predetermined reference axis locally coinciding with the longitudinal axis of the tool; the electric spindle comprising: an outer structural casing that is structured to be rigidly attachable to a generic numerical control machine; an electric motor that is housed within the structural casing and is provided with a drive shaft, which projects/emerges with its front end outside the structural casing while remaining locally coaxial to the reference axis of the electric spindle; a rotating thrust-bearing bushing or sleeve, which is fitted in an axially rotatable manner on the front end of the drive shaft via interposition of a first set of annular rolling bearings, and is maintained coaxial to the reference axis of the electric spindle by a second set of annular rolling bearings, which are interposed between the rotating bushing or sleeve and the structural casing; and at least one disassemblable tool-holder head that is structured to be attachable, in a rigid and stable though easily releasable manner, to the front end of the drive shaft, is structured so as to accommodate and retain, in a rigid and stable though easily releasable manner, the shank of a generic tool for numerical control machines, and is provided with a peripheral crown that is dimensioned/structured to stably abut, selectively and alternatively, on the front end of the drive shaft or on the rotating thrust-bearing bushing or sleeve.

    Quick-change system for a tool holder
    6.
    发明授权
    Quick-change system for a tool holder 有权
    快速更换系统的刀架

    公开(公告)号：US09573195B2

    公开(公告)日：2017-02-21

    申请号：US14252813

    申请日：2014-04-15

    申请人： Bilz Werkzeugfabrik GmbH & Co. KG

    发明人： Werner Schneider

    IPC分类号： B23B31/107

    CPC分类号： B23B31/1071 ,  B23B2231/024 ,  B23B2231/34 ,  Y10T279/17145 ,  Y10T279/17196 ,  Y10T279/17752 ,  Y10T409/309464

    摘要： A quick-change system for a tool holder comprises a machine-side receiving fixture having a hollow-cylindrical extension on which a switching sleeve is displaceably held. Automatic angular alignment of the tool holder upon introduction into the hollow-cylindrical extension of the receiving fixture is enabled by an alignment of the points of the star-shaped end face on the cylindrical holding portion of the tool holder, upon impact against a first set of three balls angularly spaced 120° apart. Once the tool holder has aligned itself in this way, then the first balls make their way into the longitudinal grooves of the cylindrical holding portion, whereby a rotationally fixed coupling is achieved. Upon the further insertion into the hollow-cylindrical extension, an axial securement finally occurs when a second set of three balls are displaced radially inward into associated depressions on the cylindrical holding portion.

    摘要翻译： 一种用于刀架的快速更换系统包括具有中空圆柱形延伸部的机器侧接收夹具，切换套筒可移动地保持在其上。 当引入到接收固定装置的中空圆柱形延伸部中时，工具夹具的自动角度对准可以通过在工具架的圆柱形保持部分上的星形端面的点与第一组件 的三个球角间隔120°。 一旦刀架以这种方式对准，则第一球进入圆柱形保持部分的纵向凹槽中，从而实现旋转固定的联接。 当进一步插入中空圆柱形延伸部时，当第二组三个球径向向内移动到圆柱形保持部分上的相关凹陷中时，最终发生轴向固定。

    Attachment structure for main spindle and tool holder of machine tool
    8.
    发明授权
    Attachment structure for main spindle and tool holder of machine tool 有权
    机床主轴和刀架附件结构

    公开(公告)号：US09511462B2

    公开(公告)日：2016-12-06

    申请号：US14502299

    申请日：2014-09-30

    申请人： FANUC Corporation

    发明人： Masahiro Murota

    IPC分类号： B23Q5/04 ,  B23Q11/10 ,  B23B31/26

    CPC分类号： B23Q5/04 ,  B23B31/263 ,  B23B2260/126 ,  B23Q11/1015 ,  Y10T408/455 ,  Y10T409/304032 ,  Y10T409/309464

    摘要： There is provided an attachment structure for a main spindle and a tool holder of a machine tool. The tool holder is attached to the main spindle by a tapered shank portion of the tool holder being inserted into a tapered hole formed in the main spindle of the machine tool. At least one circumferential groove is formed in at least one of the tapered hole and an inner wall of the main spindle.

    摘要翻译： 提供了用于主轴和机床的工具架的附接结构。 工具架通过刀架的锥形柄部分插入到形成在机床主轴中的锥形孔中而连接到主轴上。 至少一个圆周槽形成在主轴的锥形孔和内壁中的至少一个中。