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    • 22. 发明授权
    • Chuck
    • 查克
    • US6105974A
    • 2000-08-22
    • US28508
    • 1998-02-23
    • Masakazu Matsumoto
    • Masakazu Matsumoto
    • B23B31/08B23B31/117B23B31/20B23B5/22
    • B23B31/202B23B31/117Y10S279/903Y10T279/17Y10T279/17965Y10T409/30952
    • A chuck includes a holder body, a clamp sleeve, and a large number of needle rollers. The holder body has a shank portion, a flange formed at one end of the shank portion, and a chuck sleeve that extends from the flange in the direction away from the shank portion. The clamp sleeve is fitted onto the outer circumference of the chuck sleeve such that the clamp sleeve is rotatable and axially movable relative to the chuck sleeve. The needle rollers are disposed between the chuck sleeve and the clamp sleeve over the entire circumference. The clamp sleeve is rotated to cause the needle rollers to revolve spirally along the outer circumferential surface of the chuck sleeve while rotating about their own axes in order to decrease and restore the diameter of the chuck sleeve. In the chuck, a groove having a predetermined depth is formed in the end surface of the flange opposite the shank portion such that the groove surrounds the base end of the chuck sleeve through which the chuck sleeve is joined with the flange.
    • 卡盘包括保持器主体,夹紧套筒和大量滚针。 保持器主体具有柄部,形成在柄部的一端的凸缘以及从凸缘沿远离柄部的方向延伸的卡盘套筒。 夹紧套筒安装在卡盘套筒的外圆周上,使得夹紧套筒相对于夹头套筒可旋转并可轴向移动。 滚针在整个圆周上设置在卡盘套筒和夹紧套筒之间。 旋转夹紧套筒使得滚针沿卡盘套筒的外圆周表面螺旋旋转,同时围绕其自身的轴线旋转,以便减小并恢复卡盘套筒的直径。 在卡盘中,在与柄部相对的凸缘的端面上形成具有预定深度的凹槽,使得凹槽围绕卡盘套筒的基端部,卡盘套筒与凸缘接合。
    • 23. 发明授权
    • Tool holder
    • 工具托架
    • US5593258A
    • 1997-01-14
    • US538737
    • 1995-10-03
    • Masakazu MatsumotoMasahiro TaguchiYusaku Yamamoto
    • Masakazu MatsumotoMasahiro TaguchiYusaku Yamamoto
    • B23Q3/12B23B31/00B23B31/11B23B31/20B23C5/26B23B31/117
    • B23B31/201B23B31/006B23B31/1107B23B31/1122B23B2231/0296Y10T279/17444Y10T279/17471Y10T279/17965Y10T408/95Y10T409/30952
    • A tool holder has a main sleeve to be attached to a tapered bore of a spindle of a machine tool, and a subholder which is coupled with the main sleeve and to which a tool is attached. The tapered shank of the main sleeve is inserted into the tapered bore of the spindle having a taper of 7/24. The main sleeve has a tapered hole having a taper of 1/10. A tapered sleeve which is elastically deformable in the radial direction is fitted onto the outer circumference surface of a shank portion of a subholder body of the subholder. The subholder is coupled with the main sleeve such that the outer circumferential surface of the tapered sleeve having a taper of 1/10 intimately contacts the circumferential surface of the tapered hole and the rear end surface of a flange of the subholder body intimately contacts the forward end surface of the main sleeve. This structure prevents the generation of vibrations during machining. Also, the tool holder makes it possible to efficiently machine a workpiece at high speed, and to increase the durability of the tool and the spindle.
    • 工具保持器具有主套筒,其连接到机床的主轴的锥形孔,以及与主套筒联接并且工具附接到其上的子座。 主套筒的锥形柄插入主轴的锥形孔中,其锥度为+ E,fra 7/24 + EE。 主套筒具有锥度为+ E的锥形孔,为1/10 + EE。 可沿径向可弹性变形的锥形套筒安装在子座的副座体的柄部的外圆周表面上。 子座与主套筒联接,使得具有+ E,1/10 + EE锥度的锥形套筒的外圆周表面紧密接触锥形孔的圆周表面和与其相接触的凸缘的后端表面 副主体紧密接触主套筒的前端表面。 这种结构防止在加工过程中产生振动。 此外,工具架能够高效地加工工件,并提高工具和主轴的耐久性。