公开(公告)号：US06776562B2

公开(公告)日：2004-08-17

申请号：US09949600

申请日：2001-09-10

申请人： James L. Morrison ,  Thomas O. Blankenship ,  David L. Fritsche ,  Jimmy Williams, Jr.

发明人： James L. Morrison ,  Thomas O. Blankenship ,  David L. Fritsche ,  Jimmy Williams, Jr.

IPC分类号： B23B4500

CPC分类号： B23B49/026 ,  Y10S408/712 ,  Y10T408/44 ,  Y10T408/56245 ,  Y10T408/6757

摘要： A power feed attachment that has a coupling structure to couple it to a hand held drill. A double-acting cylinder, which has a piston and a rod, and is fixedly coupled to the coupling structure. A two-position valve assembly is configured for directing a pressurized fluid to the double-acting cylinder. When the two-position valve assembly is in a first position is directs a fluid to a first side of the piston moving the piston to a first position. When the two-position valve assembly is in the second position it directs the pressurized fluid to a second side of the piston to move the piston to a second position. An arm is coupled to the piston. A control mechanism having a housing and a control rod, wherein the control rod is movable within the housing of the control mechanism between an extended position and a retracted position. The control mechanism has a biasing device for biasing the control rod toward the extended position, the control rod being configured to contact the arm to resist movement of the piston toward the second position to thereby control a rate by which the piston is advanced toward the second position. The assembly may also include a four-way two position air piloted valve to control the flow of a fluid to the arm.

摘要翻译： 具有耦合结构以将其耦合到手持钻头的动力馈送附件。 具有活塞和杆的双作用缸，并且固定地联接到联接结构。 两位置阀组件构造成用于将加压流体引导到双作用气缸。 当两位置阀组件处于第一位置时，将流体引导到活塞的第一侧，将活塞移动到第一位置。 当两位置阀组件处于第二位置时，它将加压流体引导到活塞的第二侧，以将活塞移动到第二位置。 臂连接到活塞上。 一种具有壳体和控制杆的控制机构，其中所述控制杆可在所述控制机构的壳体内在延伸位置和缩回位置之间移动。 控制机构具有用于将控制杆朝向伸出位置偏置的偏压装置，该控制杆构造成接触臂以阻止活塞朝向第二位置移动，从而控制活塞向第二位置前进的速率 位置。 组件还可以包括四通两位空气引导阀，以控制流体到臂的流动。