公开(公告)号：US6116617A

公开(公告)日：2000-09-12

申请号：US273154

申请日：1999-03-19

申请人： Martin Kofler

发明人： Martin Kofler

IPC分类号： B23B31/12 ,  B23B31/16 ,  B23B31/18 ,  B23B31/30

CPC分类号： B23B31/1253 ,  Y10T279/1033 ,  Y10T279/1291 ,  Y10T279/18 ,  Y10T279/22 ,  Y10T279/25 ,  Y10T279/26 ,  Y10T279/29

摘要： A chuck has a chuck body, an actuating element limitedly axially displaceable in the body, a first set of guide pistons axially fixed in the actuating element, angularly spaced about the axis, and each forming a guide passage extending at a small acute angle to the chuck axis, and a second set of guide pistons limitedly axially movable in the actuating element, angularly spaced about the axis, interleaved with the axially fixed guide pistons, and each forming a guide passage extending at a small acute angle to the chuck axis. Respective jaw bolts slidable in the passages each have an outer end projecting forward from the chuck body and a rear end axially coupled to the chuck body. The outer ends of the jaw bolts of the axially fixed pistons define a fixed-jaw circle centered on the chuck axis and the outer ends of the jaw bolts of the axially movable pistons define a movable-jaw circle centered on the axis. The movable pistons in the actuating element can be axially displaced to thereby radially displace the outer ends of the respective jaw bolts in the movable pistons independently of the jaw bolts of the axially fixed pistons between an outer position with the movable-jaw circle radially offset from the other circle and an inner position with the circles substantially congruent. The actuating element can be displaced axially in the chuck body to radially displace the outer ends of all of the jaw bolts.

摘要翻译： 卡盘具有卡盘体，致动元件在本体中有限地可轴向移动，第一组轴向固定在致动元件中的引导活塞，围绕该轴线成角度地间隔开，并且每个形成一个以小的锐角延伸的引导通道 卡盘轴线和第二组引导活塞，其在致动元件中有限地可轴向移动，围绕轴线成角度地间隔开，与轴向固定的引导活塞交错，并且每个引导活塞形成以与夹盘轴线成小锐角延伸的引导通道。 在通道中可滑动的各个颚形螺栓具有从卡盘主体向前突出的外端和与卡盘主体轴向联接的后端。 轴向固定的活塞的颚式螺栓的外端限定了一个以卡盘轴为中心的固定颚圆，轴向可移动活塞的颚式螺栓的外端限定了一个以轴为中心的可动颚圆。 致动元件中的可动活塞可以轴向位移，从而在与可动颚圆的径向偏移的外部位置之间独立于轴向固定活塞的颚式螺栓独立于可移动活塞的各个颚式螺栓的外端径向移动 另一个圆圈和一个内圈，圆圈基本上是一致的。 致动元件可以在卡盘体中轴向位移，以径向移动所有夹爪螺栓的外端。