| 摘要 |
<p>The device (A) has three centering elements (3) including the same dimensions, and axially and normally movable in an element holder (4). The centering elements are radially positioned at an angle of 120 degrees with respect to each other. A controlled end (31) of the each centering element is in effective connection with an external, circular cone shaped guiding unit (2) e.g. peening tool. An opposite servo end (32) of the centering element is in effective connection with an inner surface (12) of a bore hole (11) of a rotatable hollow body (1).</p> |
