| 摘要 |
A laser engraving device (1) including a laser source fit for generating a beam (R) focused by focusing means (2) to engrave a portion of a surface (3) which is mated, in proximity of said portion, by abutment means (4) fit for maintaining the focusing with respect to the portion of surface (3) in relative motion with respect to said abutment means (4) in an operational condition (F). The abutment means (4) comprise rolling means (5) fit for mating the surface (3). Said rolling means (5) eliminate, almost completely, the sliding friction between the abutment means (4) and 10 the surface (3). |
