Engraving tool with improved drive mechanism for forming patterns on all types of surfaces

摘要

The tool (2) has a support arm (8) and a drive mechanism (10) for displacing the tool (12). Linear motors displace the moving part (16) of the drive in two perpendicular directions. The moving part has permanent magnets that attract it upward against the ferromagnetic stator plate (14). A stream of air delivered through a tube (26) provides an air cushion between plate and moving head.