| 摘要 |
<p>The mechanism uses a floating ball-cage (1) to guide the relative vertical displacement of a fixed (5) and a movable (4) press component, the cage interposing a sleeve (7) which is fixed (8) to the former (5) and a vertical round section column (6) which is attached to the latter (4). The balls (3) are arranged in a helical pattern in the cylindrical cage wall and have a dia. which exceeds the annular gap (3) by 2-7 microns, the cage being open at both ends while a flanged screw-in tip (9) to the free column end prevents cage escape.</p> |
