Cutting apparatus

To provide a cutting apparatus capable of executing cutting or half cutting of a work-piece depending upon quality of the work-piece by producing parallelism between a knife edge of a cutting blade and a mounting face of the work-piece. A support having the blade is provided to a column capable of controlling a tilting angle of the blade in a blade length direction, cutting or half cutting is executed by controlling vertical movement of the blade to the support by a driving source capable of controlling to move linearly provided to the support and by producing a relationship of parallelism to a surface of a table and a knife edge. Respective supports are unitized by being provided with respectively different types driving sources and the blade vertically moved by the driving source and mounted interchangeable and selectively on a column of a cutting apparatus.