Additive manufacturing method, additive manufacturing apparatus, and additive manufacturing system

An additive manufacturing method, comprising:

• measuring a temperature of an object of processing or a shaping material and outputting the measured temperature as temperature data;
• detecting light from a processing position on a target surface of a shaped article and outputting the detected light as a light detection result;
• correcting basic commands based on a basic processing program including the basic commands and processing conditions, the temperature data, and the light detection result, determining post-correction commands including a material supply command, a heat source supply unit command, a drive command, and a gas supply command, and performing at least one of increasing an amount of supply of a shielding gas to prevent a reaction of the shaping material, reducing an amount of supply of a heat source to melt the shaping material supplied to the processing position, increasing an amount of supply of the shaping material, or reducing a rate of change in a relative position between the processing position and the shaped article, when finding an anomalous state that is a state in which occurrence of any one of droplet formation, ignition, smoking, or explosion is detected based on the light detection result;
• supplying the shaping material to the processing position based on the material supply command;
• supplying the heat source to the processing position based on the heat source supply unit command;
• changing the relative position based on the drive command;
• supplying the shielding gas to the processing position based on the gas supply command;
• and
• sucking an atmosphere around the processing position.

An additive manufacturing apparatus, comprising:

• a temperature sensor to measure a temperature of an object of processing or a shaping material and output the measured temperature as temperature data;
• a controller to correct basic commands based on a basic processing program including the basic commands and processing conditions and the temperature data, and determine post-correction commands including a material supply command, a heat source supplier command, a drive command, and a gas supply command;
• a shaping material supplier to supply the shaping material to a processing position on a target surface of a shaped article based on the material supply command;
• a heat source supplier to supply a heat source to melt the shaping material supplied to the processing position to the processing position based on the heat source supplier command;
• a driver to change a relative position between the processing position and the shaped article based on the drive command;
• a gas supplier to supply, to the processing position, a shielding gas to prevent a reaction of the shaping material to the processing position based on the gas supply command so that the shielding gas surrounds a position where the heat source hits the processing position, the shielding gas being supplied from a gas nozzle to the processing position;
• and
• a dust collector with a tip of a suction port located away from a nozzle tip of the gas nozzle in a direction opposite to a direction in which the shielding gas is ejected when viewed from the processing position, to suck an atmosphere around the processing position.

An additive manufacturing apparatus, comprising:

• a temperature sensor to measure a temperature of an object of processing or a shaping material and output the measured temperature as temperature data;
• a light detector to detect light from a processing position on a target surface of a shaped article and output the detected light as a light detection result;
• a controller to correct basic commands based on a basic processing program including the basic commands and processing conditions, the temperature data, and the light detection result, determine post-correction commands including a material supply command, a heat source supplier command, a drive command, and a gas supply command, and perform at least one of increasing an amount of supply of a shielding gas to prevent a reaction of the shaping material, reducing an amount of supply of a heat source to melt the shaping material supplied to the processing position, increasing an amount of supply of the shaping material, or reducing a rate of change in a relative position between the processing position and the shaped article, when finding an anomalous state that is a state in which occurrence of any one of droplet formation, ignition, smoking, or explosion is detected based on the light detection result;
• a shaping material supplier to supply the shaping material to the processing position based on the material supply command;
• a heat source supplier to supply the heat source to the processing position based on the heat source supplier command;
• a driver to change the relative position based on the drive command;
• a gas supplier to supply the shielding gas to the processing position based on the gas supply command;
• and
• a dust collector to suck an atmosphere around the processing position.