| 摘要 |
<p>A laser processing machine has a laser beam generator (2), a processing head (4) movable relative thereto, and a gas chamber (10) connected to a gas compensating chamber (15). The gas chamber (10) provides at least part of the beam guidance chamber (6) for the laser beam (5), and at least partially is bordered by a expansible and compressible gas chamber wall (11, 12) which expands and compresses with the motion of the processing head (4) relative to the laser beam generator (2). The guidance gas chamber (10) is essentially closed apart from the flow connection to the gas compensating chamber (15), and the gas compensating chamber (15) changed in size response to the expansion and compression of the gas chamber wall (11, 12).</p> |
