Model generation method, determination method, machine tool system, and computer program

A computer comprising:

• a processor;
• a memory storing:
• first data specifying:
• a flange diameter that is a diameter of a flange of a tool holder in a radial direction with respect to a central axis, the tool holder comprising:
• the flange formed around the central axis;
• and
• a holder main body which extends from the flange in an axial direction along the central axis and to which a rotary tool is attachable;
• and
• a flange length that is a length of the flange in the axial direction;
• correspondence between the shank diameter and a main body diameter that is a diameter of the holder main body in the radial direction;
• second data specifying the main body diameter corresponding to the shank diameter that has been received;
• and
• instructions that when executed by the processor, cause the processor to perform operations;
• a user interface configured to receive inputs from an operator, the inputs including a shank diameter of the rotary tool and a main body length, the main body length being a length of the holder main body in the axial direction;
• and
• the operations comprising generating a geometric model of the tool holder based on the first data, the second data, and the main body length that has been received.