Distribution amount determination device, numerical control device, and distribution amount determination system

A distribution amount determination device that determines a distribution amount of a thermal displacement correction amount of a machine tool, the distribution amount determination device comprising:

• an in-machining emphasis information acquisition unit that acquires information including at least one of information relating to surface quality in machining, information relating to dimensional accuracy in machining, or a machining program analysis result;
• a condition storage unit that stores at least one condition of a condition for emphasis on surface quality, a condition for emphasis on dimensional accuracy, or a condition for a machining program analysis result, and stores a distribution amount when the at least one condition is satisfied;
• and
• a distribution amount determination unit that determines a distribution amount of the thermal displacement correction amount based on the information including the at least one and acquired by the in-machining emphasis information acquisition unit, and based on the at least one condition and the distribution amount when the condition is satisfied, the at least one condition and the distribution amount being stored in the condition storage unit.