Groove shape measurement method, groove shape measurement device, machining device control method, and machining device

A machining device control method, comprising:

• a coordinate data acquisition step of acquiring a plurality of pieces of three-dimensional coordinate data indicating a shape of a machined groove formed in a machining target object by a machining device;
• a projection data generation step of generating two-dimensional projection data of the machined groove by projecting the three-dimensional coordinate data acquired in the coordinate data acquisition step onto a two-dimensional plane;
• a cross-sectional profile calculation step of calculating a cross-sectional profile of the machined groove on the basis of the two-dimensional projection data generated in the projection data generation step;
• a numerical value calculation step of calculating a desired numerical value indicating a machined state of the machined groove on the basis of the cross-sectional profile calculated in the cross-sectional profile calculation step;
• and
• a control step of controlling the machining device such that the machined groove has a desired shape on the basis of the numerical value calculated in the numerical value calculation step.

A groove shape measurement device, comprising:

• a coordinate data acquisition unit acquiring a plurality of pieces of three-dimensional coordinate data indicating a shape of a machined groove formed in a machining target object by a machining device;
• a projection data generation unit generating two-dimensional projection data of the machined groove by projecting the three-dimensional coordinate data acquired by the coordinate data acquisition unit onto a two-dimensional plane;
• and
• a cross-sectional profile calculation unit calculating a cross-sectional profile of the machined groove on the basis of the two-dimensional projection data generated by the projection data generation unit.