公开(公告)号：US20020145261A1

公开(公告)日：2002-10-10

申请号：US09827401

申请日：2001-04-06

Applicant: Advanced Tool Systems, Inc.

Inventor： James A. Humphrey ,  Donald W. Ferris

IPC: B23B031/20

CPC classification number: B23B31/201 ,  Y10T279/17461 ,  Y10T279/17521 ,  Y10T279/17589

Abstract: A true length collet chuck assembly is adapted to receive and actuate a quick change, segmented collet having a flange extending radially outwardly from the outer surface of the collet adjacent a rear face of the collet. The collet chuck assembly comprises a chuck body having a longitudinally extending bore defined by an inwardly facing, cylindrical surface on the chuck body. The inwardly facing, cylindrical surface on the chuck body defines a circumferential groove for receiving the radially outwardly extending flange on the collet to thereby restrain the collet against axial movement relative to the chuck body. A collet closing sleeve, disposed within the chuck body and axially displaceable relative thereto, has an outwardly flaring interior surface adapted to engage an outwardly flaring surface on the collet. Axial displacement of the closing sleeve relative to the chuck body in one direction compresses the quick change collet to grip a workpiece and axial displacement of the closing sleeve in the other direction allows the quick change collet to expand and release the workpiece. A collet actuator is disposed within the chuck body and is adapted to be coupled to an actuator driver for axially displacing the collet actuator relative to the chuck body. The collet actuator is releasably coupled to the rear portion of the closing sleeve. Axial displacement of the collet actuator by means of the actuator driver correspondingly displaces the closing sleeve whereby the collet is compressed or allowed to expand.

Abstract translation: 真正长度的夹头卡盘组件适于接收和致动快速变化的分段夹头，其具有从夹头的后表面的夹头的外表面径向向外延伸的凸缘。 夹头卡盘组件包括卡盘主体，其具有由卡盘主体上面向内的圆柱形表面限定的纵向延伸的孔。 卡盘主体上面向内的圆柱形表面限定了用于容纳夹头上径向向外延伸的凸缘的圆周槽，从而限制夹头相对于卡盘体的轴向运动。 设置在卡盘主体内并相对于卡盘主体轴向移位的夹头闭合套筒具有向外扩张的内表面，其适于与筒夹上的向外扩张的表面接合。 闭合套筒相对于卡盘体在一个方向上的轴向位移压缩快速更换夹头以夹持工件，并且闭合套筒沿另一方向的轴向位移允许快速更换夹头扩张和释放工件。 夹头致动器设置在卡盘主体内并且适于联接到致动器驱动器，用于相对于卡盘主体轴向移动夹头致动器。 夹头致动器可释放地联接到闭合套筒的后部。 通过致动器驱动器的夹头致动器的轴向位移相应地使闭合套筒移位，由此夹头被压缩或允许其膨胀。