Three-dimensional shaping apparatus and method of manufacturing three-dimensional shaping object

A three-dimensional shaping apparatus shaping a three-dimensional shaping object, comprising:

• a plasticizing member configured to plasticize a material to generate a shaping material;
• a nozzle having a discharge port discharging the shaping material toward a table;
• a flow path fluidly connecting between the plasticizing member and the nozzle, the shaping material flowing through the flow path along a shaping material flow direction;
• a movement mechanism changing a relative position between the nozzle and the table;
• a discharge control mechanism that includes a butterfly valve, a drive shaft, and a valve driver, the butterfly valve being a part of the drive shaft, the butterfly valve being provided in the flow path, the valve driver being configured to rotate the drive shaft, the butterfly valve being configured to control a discharge amount of the shaping material from the nozzle;
• a storage device configured to store a program;
• and
• a processor configured to execute the program so as to:
• change a relative position of the nozzle and the table at a first speed to discharge the shaping material on the table;
• set a rotation angle of the butterfly valve to a first degree with respect to the shaping material flow direction to discharge a first discharge amount of the shaping material from the nozzle when the relative position of the nozzle and the table is changed at the first speed;
• change the relative positon of the nozzle and the table at a second speed to discharge the shaping material on the table;
• and
• set the rotation angle of the butterfly valve to a second degree with respect to the shaping material flow direction to discharge a second discharge amount of the shaping material from the nozzle when the relative position of the nozzle and the table is changed at the second speed,
• wherein the second speed is slower than the first speed, and the second discharge amount is smaller than the first discharge amount.