To perform easy and high-efficient formation of locus data of deburring tool, in a deburring device.

Figure data 11 is formed by a first control device 5 of a plate finishing machine 3 and a machining program 13 is produced based on the figure data 11. Plate machining is applied on a work W according to the machining program 13 by the plate finishing machine 3. The figure data 11 is transmitted to a second control device 31 of a deburring device 29 and by adding a deburring condition 73 to the transmitted figure data 11, a deburring program 67 produced based on locus data of the deburring tool 39 is easily and accurately produced. Burrs formed at a product G on which plate machining is applied by the plate finishing machine 3 are removed by the deburring tool 39 based on the deburring program 67.