부산대학교 도서관

To provide a tool changer of a machine tool that makes it possible to surely execute machining as designated in a machining program without any need for the editing of the machining program or the replacement of tools and without complicating the device structure. The tool changer 11 includes a tool correspondence table A showing a correspondence relation between a program-designated tool T0001 designated in a machining program O0001 and an actual use tool T0003 actually used according to the machining contents designated in the machining program, wherein the actual use tool corresponding to the program-designated tool is found by using the tool correspondence table A and the found actual use tool is decided as a subsequent process tool.