| 摘要 |
<p>A ball screw shaft, with increased vibration frequency and improved vibration dissipation, having a longitudinal cylindrical internal cavity (5), closed at its ends by means of inserted terminals or plugs (6), has in said cavity (5) a filling of granular material (7) with low density and high superficial roughness freely distributed and, moreover, according to a variation of the invention, said longitudinal cylindrical internal cavity (5) has inserted therein a pipe (8) made of composite polymeric material, whose outer surface is made adherent and integral with the inner wall of the longitudinal cylindrical cavity (5); said pipe (8) having in its longitudinal cavity (9) said filling made of granular material with low density and high superficial roughness (7).</p> |
