MACHINING DEVICE AND MACHINING METHOD

PROBLEM TO BE SOLVED: To provide a machining device and a machining method unrestricted in the size of a tool, applicable even to machining of a free curved surface, causing no shortening of the service life of the tool. SOLUTION: This machining device 1 has: a cutting tool 9; a cutting line forming means 7 for forming cutting lines by moving relative to a workpiece 101 in the direction 1 while imparting a predetermined depth of cut thereto; and a cutting tool feed means 7 for feeding the position of the cutting tool 9 relative to the work 101 by a predetermined feed amount in the direction orthogonal to the direction 1. The machining device further has a cutting depth setting means for forming the cutting lines on the surface of the workpiece 101 along the orthogonal direction and setting the cutting depth so that the cutting depth is nonuniform between the cutting lines. COPYRIGHT: (C)2010,JPO&INPIT