Numerical control device and numerical control method

A numerical control device comprising:

• additive manufacturing execution circuitry to control an additive manufacturing machine that performs an additive manufacturing process in which a shaped object is produced by stacking layers of a material melted by emission of a beam from a first machining head;
• subtractive manufacturing execution circuitry to control a subtractive manufacturing machine that performs a subtractive manufacturing process in which the shaped object is cut using a tool disposed on a second machining head;
• status analysis circuitry to receive sensor data obtained by monitoring of a machining status of the shaped object, and to analyze the machining status of the shaped object based on the sensor data, the shaped object being produced by a combination of two production processes, the two production processes being the additive manufacturing process and the subtractive manufacturing process;
• production process change circuitry to generate a switching command that commands switching with respect to which of the two production processes is to be performed, based on a result of analysis of the machining status, and to output the switching command to the additive manufacturing execution circuitry and to the subtractive manufacturing execution circuitry;
• and
• process condition generation circuitry to determine, upon switching between the two production processes, a second process condition to be used in a second production process based on a first process condition that has been used in a first production process, the first production process being a production process performed before the switching, of the two production processes, the second production process being a production process to be performed after the switching, of the two production processes, wherein
• a moving direction on a machining path to be used in the second production process is opposite to a moving direction on a machining path used in the first production process.