Automatic programming device and method

An automatic programming device that generates control-command data on the basis of machining-area data for partial machining of a shaped raw material, the automatic programming device comprising:

• a machining-area-shape generation unit that generates machining-area shape data that corresponds to a machining area shape machined on the basis of the machining-area data;
• and
• a chamfering tool-path generation unit that, when the machining area shape is a chamfering target part, generates chamfering tool-path data for chamfering according to chamfering data including the machining-area shape data, tool-to-be-used data, and machining condition data, wherein
• the chamfering tool-path generation unit includes
• a chamfered-surface defining unit that, when performing chamfering on a boundary of the machining-area shape defined on a curved surface that is the shaped raw material and the shaped raw material, generates chamfered surface shape data that defines a chamfered surface after the chamfering for a shape of the chamfering target part on the basis of the machining-area shape data and the machining condition data that are stored in advance,
• a reference-point-sequence generation unit that generates a reference point sequence serving as a reference for generating the chamfering tool-path data on the basis of the chamfering data, and
• a tool-reference-position generation unit that generates a reference position of the chamfering tool when the chamfering tool passes while performing chamfering by using 2-axis machining with a rotating axis parallel to a central axis of the shaped raw material and with a linear axis parallel to a bottom surface of the machining area shape for each reference point of the reference point sequence and the chamfered surface.