Method of protection against pollution of optical system of device for incremental forming of geometric objects and device for implementing this method

摘要

The mode of protection against contamination of the optical system of a device for the incremental production of geometric objects in which the protection in question is used is released into closed circulation by the process chamber,to perform this process, the protective gas in which, in the process chamber (1),where the laser is used for the progressive production of geometric objects, the protective atmosphere is produced by filling the process chamber (1) with a protective gas, which is then blown through the process chamber (1) by means of a circulation pump (4a),where the circulating pump (4a) operates in a closed circuit and the protective gas it injects before re-entering the process chamber (1) is filtered is characterised by the fact that in the process chamber (1),Before the protective glass surface (3a) of a laser window, a gas curtain blowing in front of a laser window shall be produced from the protective gas, which floats during the vapour and contamination process. A device for the incremental production of geometric objects constructed from a process chamber (1),at the bottom of which the processing platform is located (2),and in the ceiling wall, above the work platform,laser optical system (3),whose laser window from the inside of the process chamber (1) is enclosed with protective glass (3a) and operating in a closed system connected to the process chamber (1) of the explosion system (4) and the filtering of the protective gas producing in the process chamber (1) the protective atmosphere,which is produced for the process of producing geometric objects carried out in it, is characterised by the fact that the system (4) of the exhaust and the filtering of the protective gas is equipped with a linear navigator (4f) producing an air jacket in front of the protective window (3a).