Systems and methods for additive manufacturing rotating build platforms

An additive manufacturing system configured to manufacture a component, said additive manufacturing system comprising:

• a laser device configured to generate a laser beam;
• a build platform, the component disposed on a surface of said build platform;
• an air knife configured to channel a flow of inert gas across said build platform;
• a plenum configured to channel flow of inert gas away from said build platform;
• a recoater configured to coat a powdered build material on the component and said build platform;
• at least one wall defining an air-locked build chamber, wherein said air knife, said recoater, and said build platform are disposed within said air-locked build chamber, and wherein said air knife, said recoater, and said build platform are configured to independently rotate relative to said air-locked build chamber;
• and
• a first scanning device configured to selectively direct the laser beam across said build platform, the laser beam configured to generate successive layers of a melted powdered material on the component and said build platform, wherein said build platform and said recoater are configured to independently rotate relative to each other, said build platform configured to rotate about an axis oriented perpendicular to the surface of said build platform.

A method of manufacturing a component with an additive manufacturing system, the additive manufacturing system including a build platform, an air knife, a recoater, a plenum, and a laser device, the component disposed on a surface of the build platform, the air knife configured to channel a flow of inert gas across the build platform, the plenum configured to channel the flow of inert gas away from the build platform, said method comprising:

• spreading a powdered build material on the build platform and the component with the recoater;
• generating a laser beam with the laser device, the laser beam directed toward the powdered build material;
• generating a layer of a melted powdered build material with the laser beam;
• rotating the build platform relative to the air knife about an axis oriented perpendicular to the surface of the build platform;
• and
• independently rotating the plenum relative to the build platform, the laser device, the recoater, and the air knife.