Numerical controller and movement control method for tool that maximizes synthetic movement velocity in a cutting feed by rotating the table to a selected angle

A numerical controller that moves a tool based on a program stored in a storage medium of the numerical controller, the tool being configured to machine a work supported on a table having a rotation center position and being movable along at least two axis directions orthogonal to each other, the numerical controller comprising:

• a program analyzing processor configured to obtain, from the program, a first movement end point position of the tool that is linearly moved;
• a direction calculating processor configured to calculate a synthetic movement direction that maximizes a synthetic velocity of the tool, based on a predetermined upper limit movement velocity of the tool in each of the at least two axis directions;
• an end point position calculating processor configured to calculate an intersection position of a circle and the synthetic movement direction as a second movement end point position, the circle having as a radius a distance from a rotation center position of the table to the first movement end point position;
• a rotation angle calculating processor configured to calculate a rotation angle of the table based on the first movement end point position and the second movement end point position;
• and
• a rotation control processor configured to control rotation of the table about the rotation center position based on the rotation angle so that the tool is able to perform a cutting feed at a maximum movement velocity of the tool, wherein the maximum movement velocity is based on a predetermined upper limit movement velocity of the tool in each of the at least two axis directions.