| 摘要 |
<p>A moving portal (1) for a measuring machine or a machine tool is described, comprising at least one pair of uprights (3a, 3b) supporting on their upper part at least one ledger (5) equipped with at least one measuring feeler arm or vertical tool-holder arm (7), each upright (3a, 3b) comprising on its lower part at least one respective base (11a, lib) equipped with supports sliding along a pair of guiding rails (15a, 15b), further comprising a system for compensating alignment errors of the guiding rails (15a, 15b) comprising at least one sliding support (16) arranged between at least the upright (3a) and the respective base (lla), such sliding support (16) having at least one degree of freedom with direction parallel to an axis (Y) perpendicular to a sliding direction of the portal (1) along the guiding rails (15a, 15b).</p> |
