Automatic parameter adjustment device for adjusting parameter corresponding to processing condition

An automatic parameter adjustment device for automatically adjusting a control parameter of each of at least one drive axis of a machine tool, the control parameter being set to a numerical controller for controlling the machine tool, the automatic parameter adjustment device comprising:

• a processor configured to
• determine a weighting coefficient of a processing time and a weighting coefficient of a processing accuracy of the machine tool, as evaluation criteria for automatically adjusting the control parameter,
• change the control parameter,
• transmit a test program used in automatically adjusting the control parameter to the numerical controller for executing the test program by the numerical controller,
• obtain an execution result of said executing the test program, the execution result including a commanded trajectory and an actual trajectory of a representative point of the machine tool and an execution time of the test program,
• store the execution result and a control parameter corresponding to the execution result,
• evaluate the execution result based on the two weighted evaluation criteria, and
• extract an optimum control parameter based on the evaluated execution result,
• wherein the test program is executed multiple times while changing the control parameter, and the extracted control parameter corresponds to an execution result satisfying a predetermined condition among a plurality of execution results obtained by executing the test program multiple times.