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该夹紧装置头部α呈叉形,位于叉臂b中间的是能绕轴c摆动的工件夹紧臂d、摆动铰链e和传动杆f。切削加工时,为能可靠地防止切屑落入叉臂b中间的空间,设置了一个圆弧形状的盖g,以便将铰链e的两个转动关节h、i覆盖起来。圆弧形盖与夹紧臂d是联动的,这样,夹紧臂d在进行夹紧工件的同时,由夹紧臂底部k带动圆弧形盖g,使它绕摆动轴和沿着与其匹配的圆弧形内导轨(或外导轨)l移动,从而将叉臂b中间的空间遮盖起来。
The head of the clamping device α is in the form of a fork. Located in the middle of the fork arm b are a workpiece clamping arm d capable of swinging around a shaft c, a swinging hinge e and a transmission rod f. In cutting, in order to reliably prevent chips from falling into the space between the forks b, an arc-shaped cover g is provided so as to cover the two swivel joints h, i of the hinge e. The arc-shaped cover is interlocked with the clamping arm d, so that the clamping arm d drives the arc-shaped cover g at the bottom k of the clamping arm while clamping the workpiece so as to make it fit around the oscillation axis and along with it Arc-shaped inner rail (or outer rail) l move, so as to cover the space between the fork arm b up.