| 摘要 |
<p>Method of processing workpieces (3), especially glass tubing for pharmaceutical, chemical or veterinary applications, by optical beams (1,2) in the visible or spectrally adjacent region, comprises: (a) severing, drilling or localised material removal, carried out by a first, sharply focussed, high power density beam (1); (b) shaping, melting or heat treatment carried out by a second, lower power density beam (2) which may be less focussed or even divergent, depending on the use; and (c) both beams (1, 2) being adjusted by deflection units (11, 17) so that they are aligned parallel or inclined to one another for incidence at the same or different processing locations. Also claimed is an apparatus for carrying out the above method having: (i) a beam generating unit for producing two processing beams of different, widely adjustable beam properties, a first beam being sharply focussed and of high power density and a second beam being poorly focussed or divergent and o f lower power density; (ii) deflection units (11, 17) for mutually independent deflection of the beams into parallel or mutually inclined alignment for incidence on common or separate processing locations; and (iii) a clamping and positioning unit for the workpiece.</p> |
