Combined machining apparatus, method to perform cutting and friction stir welding, and computer readable storage medium

A combined machining apparatus comprising:

• a spindle to which a cutting tool and a friction stir welding tool are attachable;
• a load sensor provided on at least one of the spindle and the friction stir welding tool, the load sensor being configured to detect load which deforms the friction stir welding tool;
• a temperature sensor configured to detect a temperature related to thermal displacement of a position of the cutting tool;
• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the combined machining apparatus to perform operations comprising:
• reading a machining program to determine a working tool to be called by the machining program;
• determining whether the working tool is the cutting tool or the friction stir welding tool;
• allowing correction of a position of the working tool based on the temperature detected by the temperature sensor when the working tool is determined to be the cutting tool;
• and
• allowing correction of a position of the working tool based on the load detected by the load sensor when the working tool is determined to be the friction stir welding tool,
• wherein the correction of the position of the working tool based on the temperature includes estimating a position offset from a position of a cutting edge of the working tool in a case where the temperature detected by the temperature sensor is a reference temperature, based on the temperature detected by the temperature sensor, and correcting the position of the working tool in the cutting, based on the position offset.

A combined machining apparatus comprising:

• a spindle to which a cutting tool and a friction stir welding tool are attachable;
• a load sensor provided on at least one of the spindle and the friction stir welding tool, the load sensor being configured to detect load which deforms the friction stir welding tool;
• a temperature sensor configured to detect a temperature related to thermal displacement of a position of the cutting tool;
• a tool magazine configured to store the cutting tool and the friction stir welding tool;
• a tool exchanger configured to exchange tools between the tool magazine and the spindle;
• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the combined machining apparatus to perform operations comprising:
• reading a machining program to determine a working tool to be called by the machining program;
• determining whether the working tool is the cutting tool or the friction stir welding tool;
• allowing correction of a position of the working tool based on the temperature detected by the temperature sensor when the working tool is determined to be the cutting tool;
• and
• allowing correction of a position of the working tool based on the load detected by the load sensor when the working tool is determined to be the friction stir welding tool.