Machine tool display device, machine tool control device, and program

A control device for a machine tool that performs oscillation machining while performing relative oscillation of a cutting tool and a workpiece, the control device comprising:

• a first feed rate acquisition unit that acquires a feed rate in non-oscillation machining that differs from the oscillation machining;
• a relationship value acquisition unit that acquires a relationship value indicating a relationship between a relative feed rate of the cutting tool and the workpiece and surface roughness;
• a target surface roughness acquisition unit that acquires target surface roughness that is set for the workpiece that is a target of machining based on the feed rate that the first feed rate acquisition unit has acquired and the relationship value;
• an oscillation condition acquisition unit that acquires oscillation conditions for oscillation cutting, including at least a frequency parameter and an amplitude parameter;
• an oscillation feed rate calculation unit that calculates a feed rate in the oscillation machining based on the target surface roughness, the relationship value, and the oscillation conditions;
• and
• a drive control unit that performs shaft control for the oscillation machining based on the feed rate in the oscillation machining.

A readable storage medium storing a program causing a computer for a machine tool that performs oscillation machining while performing relative oscillation of a cutting tool and a workpiece to achieve functions comprising:

• a relationship value acquisition function of acquiring a relationship value indicating a relationship between a relative feed rate of the cutting tool and the workpiece and surface roughness;
• a target surface roughness acquisition function of acquiring target surface roughness that is set for the workpiece that is a target of machining;
• an oscillation condition acquisition function of acquiring oscillation conditions for oscillation cutting, including at least a frequency parameter and an amplitude parameter;
• an oscillation feed rate calculation function of calculating a feed rate based on the target surface roughness, the relationship value, and the oscillation conditions;
• and
• a display control function of causing a display unit to display the feed rate.