公开(公告)号：US08784018B2

公开(公告)日：2014-07-22

申请号：US12797265

申请日：2010-06-09

申请人： Helena P{hacek over (a)}bel

发明人： Helena P{hacek over (a)}bel

IPC分类号： B23B51/02

CPC分类号： B23B51/02 ,  B23B2205/02 ,  B23B2251/02 ,  Y10T408/892 ,  Y10T408/9097 ,  Y10T408/9098 ,  Y10T408/90993

摘要： A drilling tool of the loose top type includes a basic body having two bendable branches having inner support surfaces that are resiliently pressable against side contact surfaces of a replaceable loose top. The mounting of the loose top is affected by turning-in from an initial position to an operative end position. An abutting edge along each side contact surface then bends out the branches and subjects the branches to a spring force that reaches a maximum in a dead position so as to then decrease somewhat up to the operative end position. During the final phase of the rotary motion, the operator obtains, in a tactile and/or auditory way, confirmation of the loose top indeed reaching its operative end position.

摘要翻译： 松顶型的钻具包括具有两个可弯曲分支的基体，该基部具有能够抵靠可更换的松顶部的侧接触表面弹性压迫的内支撑表面。 松顶部的安装受到从初始位置到操作结束位置的转入的影响。 沿着每个侧面接触表面的邻接边缘然后使分支弯曲并使分支受到在死区中达到最大值的弹簧力，从而稍微降低到操作终点位置。 在旋转运动的最后阶段，操作者以触觉和/或听觉方式获得确认达到其操作结束位置的松散顶部的确认。