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    SPANNFUTTER
    2.
    发明公开
    SPANNFUTTER 审中-公开

    公开(公告)号：EP3191245A1

    公开(公告)日：2017-07-19

    申请号：EP15757532.5

    申请日：2015-09-08

    申请人： Schunk GmbH & Co. KG Spann- und Greiftechnik

    发明人： DAMANG, Markus

    IPC分类号： B23B31/167

    CPC分类号： B23B31/16045 ,  B23B31/16295

    摘要： The invention relates to a chuck comprising a chuck body (1), a number of guide points for chuck jaws running radially in relation to the chuck axis, a wedge bar mechanism for actuating the chuck jaws having a number of wedge bars (5) which are guided in wedge bar pockets (6) of the chuck body (1) running transversely in relation to the guide grooves (3), and which can be adjusted by a drive in a working region between an inner working position, corresponding to an inner chuck position of the chuck jaws (4), and an outer working position, corresponding to an outer chuck position of the chuck jaws (4). One safety mechanism is assigned to each wedge bar (5). This comprises a release bolt (9) which is rotatably arranged about its longitudinal axis, in a holding borehole (11) of the chuck body (1) that extends in the longitudinal direction of the corresponding wedge bar (5). An end section (9a) of the release bolt (9) leading into the chuck body (1) rotatably engages in a receiving borehole (13) of the associated wedge bar (5), wherein a control groove is formed in the peripheral surface of the end section (9a), said control groove (14) being engaged with a control pin (15), which is held in the wedge bar (5) and projects into the receiving borehole (13), in such a way that a rotation of the release bolt (9) from its starting position into its release position causes the wedge bar (5) to be pulled away beyond the outer working position into a jaw change position to such an extent that a row of teeth (7) of the wedge bar (5) are positioned outside the region of the guide groove (3), thereby permitting a chuck jaw (4) to be removed from the guide groove (3). The safety mechanism comprises locking means which prevent the wedge bar (5) from being moved from its jaw change position back into its outer working position by rotating the release bolt, without a chuck jaw (4) being inserted into the guide groove (3).

    摘要翻译： 本发明涉及一种卡盘，该卡盘包括卡盘本体（1），用于相对于卡盘轴线径向延伸的卡盘爪的多个引导点，用于致动具有多个楔形杆（5）的卡盘爪的楔形杆机构， 在相对于导向槽（3）横向延伸的卡盘体（1）的楔形槽口（6）中被引导，并且可以通过驱动装置在工作区域中的驱动装置进行调节，该工作区域对应于内部工作位置 卡盘爪（4）的卡盘位置以及与卡盘爪（4）的外卡盘位置相对应的外部工作位置。 每个楔形杆（5）分配一个安全机制。 这包括围绕其纵向轴线可旋转地布置在卡盘主体（1）的沿对应楔形杆（5）的纵向方向延伸的保持钻孔（11）中的释放螺栓（9）。 通向卡盘主体（1）的释放螺栓（9）的端部区段（9a）可旋转地接合在相关联的楔形杆（5）的接收孔（13）中，其中控制凹槽形成在 所述控制槽（14）与保持在所述楔形杆（5）中并且伸入所述接收孔（13）中的控制销（15）接合，使得所述控制槽 释放螺栓（9）从其起始位置移动到其释放位置时，楔形杆（5）被拉离超出外部工作位置而进入钳口更换位置，使得一排齿（7） 楔形杆（5）位于导向槽（3）的区域之外，由此允许从导向槽（3）移除卡盘爪（4）。 该安全机构包括锁定装置，该锁定装置通过旋转释放螺栓而防止楔形杆（5）从夹爪更换位置移回到其外部工作位置，而无需将卡盘爪（4）插入导向槽（3）中， 。