| 摘要 |
PURPOSE:To enable shortening of a total machining time, by a method wherein, from the machining program of each machining plane, a tool changing time for machining of the same machining plane is compared with a machining plane dividing time by means of the same tool, and according to the result, a machining method is decided. CONSTITUTION:According to an instruction from a main control part 2, and based on the machining program of each machining plane, a tool list TLT is prepared in a tool list memory 19 by means of a machining layout preparation computing part 15. Thereafter, a machining layout program MLP is readed from a system program memory 13, and a tool using order number by the same tool is provided. A time comparison computing part 20 compares a time, in which a tool is exchanged to machine the same machining plane, with a time in which other machining plane by the same tool without exchange a tool, selects a machining method, by which a time is further shortened, a machining layout MLT is stored in a machining layout memory 16, and machining is effected like the memory through control of an execution control part 6. |
