Combined machining method and combined machining device

摘要

A method of cutting a cut member out of an original sheet by means of thermal cutting and machining, and includes a hole-cutting process, a finishing process, and an outer periphery-cutting process. During the hole-cutting process, a hole is created in the original sheet by means of thermal cutting while leaving a machining allowance in addition to the finished size of the hole. During the finishing process, a cutting tool is inserted into the hole which has been created through the hole-cutting process, and the cutting tool is guided along the inner circumference of the hole so as to cut the thermally-cut end surface in order to machine the hole to the finished size. During the outer periphery-cutting process, the outer periphery of the cut member is cut by means of thermal cutting to take the cut member out of the original sheet.

主权项

1. A combined machining method of forming a hole in an original sheet by thermal cutting and machining, and taking out a cut member including the hole from the original sheet, the method including:
a hole-cutting process for forming a hole in the original sheet by means of thermal cutting while leaving a machining allowance relative to a finished size; a finishing process for using a cutting tool to cut a thermally-cut end surface of the hole by guiding the cutting tool along an inner peripheral surface of the hole, and to machine the hole to the finished size; an outer periphery-cutting process for cutting an outer periphery of the cut member by means of thermal cutting and taking out the cut member from the original sheet, the outer periphery-cutting process being executed after the finishing process; and a confirmation process for confirming whether or not thermally-cut end material remains inside the hole after the hole-cutting process by advancing the cutting tool toward the hole and detecting a position of the cutting tool, the confirmation processing being executed between the hole-cutting process and the finishing process.