| 摘要 |
<p>Assembling process involves silking (2) on the first piece (1) and drilling (8) of the second piece (7), with holes of two diameters, the smaller one being larger than the diameter of silking of the first piece. The silking is forced into the drilling and the end part of the silking (13) is deformed for filling the annular space (12) helped by the presence of a centering tool..</p> |
