Machining command correction device and machining command correction method

A machining command correction device comprising:

• a machining command analyzing unit configured to generate first machine coordinate information that is a time-series change in coordinates of each axis of a machine tool on a basis of a first machining command that describes time-series change in position and orientation of a tool, and machine configuration information for performing coordinate transformation between a coordinate system having a workpiece as a reference thereof and a coordinate system having the machine tool as a reference thereof;
• an interference calculating unit configured to calculate an interference between the tool and the workpiece for a case in which the machine tool operates in accordance with the first machine coordinate information, on the basis of the first machine coordinate information, the machine configuration information, tool shape information related to a shape of the tool for use in machining to be performed in accordance with the first machining command, and workpiece shape information related to a shape of the workpiece to be achieved when the first machining command is performed;
• a tool orientation correcting unit configured to correct the orientation of the tool on the basis of the first machine coordinate information and generate second machine coordinate information;
• and
• a machining command generating unit configured to generate, when the interference does not exist, a second machining command on the basis of the second machine coordinate information,
• wherein
• the interference calculating unit calculates a tool orientation range in which an interference does not occur, and
• the tool orientation correcting unit corrects the orientation of the tool within the tool orientation range that has been calculated, and determines a corrected orientation of the tool by using an evaluation value for evaluating quality of a tool path.

A machining command correction method comprising causing a computer as a machining command correction device to perform processing that comprises:

• generating first machine coordinate information that is a time-series change in coordinates of each axis of a machine tool on a basis of a first machining command that describes time-series change in position and orientation of a tool, and machine configuration information for performing coordinate transformation between a coordinate system having a workpiece as a reference thereof and a coordinate system having the machine tool as a reference thereof;
• correcting the orientation of the tool on the basis of the first machine coordinate information and generating second machine coordinate information;
• calculating an interference between the tool and the workpiece for a case in which the machine tool operates in accordance with the second machine coordinate information, on the basis of the second machine coordinate information, the machine configuration information, tool shape information related to a shape of the tool for use in machining to be performed in accordance with the first machining command, and workpiece shape information related to a shape of the workpiece to be achieved when the first machining command is performed;
• and
• generating, when the interference does not exist, a second machining command on the basis of the second machine coordinate information.