Machine tool control device

A machine tool controller for a machine tool that performs machining while causing a tool and a workpiece to oscillate relative to each other, the machine tool controller comprising:

• a processor,
• the processor being configured to:
• calculate an oscillation command;
• determine, as a first oscillation condition, one of a frequency parameter and an amplitude parameter, the frequency parameter including a frequency or a frequency multiplying factor of the oscillation command, the amplitude parameter including an amplitude or an amplitude multiplying factor of the oscillation command;
• calculate, as a second oscillation condition, the other of the frequency parameter and the amplitude parameter, based on the first oscillation condition determined;
• and
• set, as a priority condition, at least one of a chip length, surface roughness of the workpiece, the frequency parameter, the amplitude parameter, an operation parameter of the machine tool, or various specifications determined from these, wherein
• the processor determines the first oscillation condition and the second oscillation condition that satisfy upper limit values of all of the first oscillation condition, the second oscillation condition, the frequency parameter, the amplitude parameter, a feed rate, and a feed acceleration, except for the priority condition and that minimize the priority condition based on the second oscillation condition calculated from the first oscillation condition within a predetermined range.

A machine tool controller for a machine tool that performs machining while causing a tool and a workpiece to oscillate relative to each other, the machine tool controller comprising:

• a processor,
• the processor being configured to:
• calculate an oscillation command;
• determine, as a first oscillation condition, one of a frequency parameter and an amplitude parameter, the frequency parameter including a frequency or a frequency multiplying factor of the oscillation command, the amplitude parameter including an amplitude or an amplitude multiplying factor of the oscillation command;
• calculate, as a second oscillation condition, the other of the frequency parameter and the amplitude parameter, based on the first oscillation condition determined;
• and
• clamp the second oscillation condition by an upper limit value determined from an operation upper limit of the machine tool, and change the first oscillation condition based on the second oscillation condition clamped.