| 摘要 |
<p>The tool has three retaining screws (8, 9, 10) arranged over a circumference of a tool part (3) in a distributed manner, where the screws are radially screwed into a threaded hole (12) of the part. The retaining screws are engaged in radial holes (21, 22, 23) of a lug (4), where an angle between the screws (9, 10) is smaller than 120 degrees and larger than 90 degrees, and an angle between the screws (8, 10) is same as an angle between the screws (8, 9). Recesses are arranged in the respective radial holes, so that the lug is polygonal at its circumference by tightening the screws.</p> |
