Patent ID: 11938580
Assignee: SHIBAURA MACHINE CO., LTD.
Field: Control (Instruments)
Classification: CPC B  G  Y | IPC B  G

Claim 5:
6. A workpiece machining device for machining a workpiece into a desired shape, comprising:
a radius end mill in which a corner portion of a lower end is formed into an arc shape in a side view and rotates about a rotation axis to perform cutting of the workpiece;
a tool holding unit configured to hold the radius end mill;
a positional deviation detection unit configured to detect a positional deviation between a real contour line, which is a contour line of the radius end mill, and an ideal contour line, which is a contour line of the radius end mill formed into an ideal shape, when the radius end mill is held by the tool holding unit; and
a positional deviation correction unit configured to correct the positional deviation; wherein
the positional deviation correction unit calculates a first correction value configured to make a center of a first arc section formed into an arc shape at a corner portion of the ideal contour line and a center of a second arc section formed into an arc shape at a corner portion of the real contour line to be identical to each other in a plane perpendicular to the rotational axis, and corrects a machining point by the radius end mill using the first correction value.