CPC B29C 64/277 (2017.08) [B22F 10/36 (2021.01); B22F 10/47 (2021.01); B22F 12/42 (2021.01); B22F 12/44 (2021.01); B22F 12/45 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B29C 64/153 (2017.08); B29C 64/255 (2017.08); B29C 64/268 (2017.08); B29C 64/295 (2017.08); B29C 64/393 (2017.08); B33Y 10/00 (2014.12); B22F 10/28 (2021.01); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] | 17 Claims |
1. A processing machine for producing three-dimensional components layer by layer by irradiating a powder by a processing beam, comprising:
a container with an opening and a moveable support for the powder;
an irradiating device comprising a processing beam scanner for aligning the processing beam on a processing field at the opening of the container for producing the three-dimensional component layer by layer by irradiating and melting the powder,
wherein the irradiating device further comprises a heater comprising:
a heating radiation source for generating a heating beam for heating the powder from above by aligning the heating beam on the processing field, wherein the heating radiation source is arranged and controlled to align a beam axis of the heating beam in stationary fashion on a point of the processing field irrespective of a position of the processing beam in the processing field; and
a beam shaping optical unit configured to convert a first beam profile of the heating beam into a second beam profile of the heating beam, wherein the beam shaping optical unit comprises at least one axicon for generating the second beam profile, wherein the second beam profile comprises a ring-shaped beam profile, and wherein a diameter of the ring-shaped beam profile of the heating beam in the processing plane substantially corresponds to a diameter of the processing field.
|