Additive manufacturing apparatus and additive manufacturing method

An additive manufacturing apparatus comprising:

• shaping circuitry including material supply circuitry to supply a material to a workpiece, heat source output circuitry to output a heat source for melting the material, and drive circuitry to move the heat source and the material supply circuitry, the shaping circuitry being configured to form a bead with the material melted using the heat source;
• position correction circuitry to obtain, based on a bead position error that is an error of a center position of the bead to be formed, a correction amount of a machining point to which the heat source and the material are supplied;
• position correction amount adjustment circuitry to, in a case where an appropriate correction range that is a range of a value of the correction amount with which the bead can be appropriately formed is set and the value of the correction amount obtained by the position correction circuitry is out of the appropriate correction range, adjust the value of the correction amount to a value included in the appropriate correction range;
• and
• bead width correction amount calculation circuitry to calculate a correction amount of a bead width based on a difference between a shape of an additively manufactured object and a target shape in a case where the machining point is corrected with the correction amount adjusted by the position correction amount adjustment circuitry.