| 摘要 |
PROBLEM TO BE SOLVED: To remarkably facilitate the mounting and removing operations for a workpiece on/from a supporting device. SOLUTION: A laser processing machine is equipped with a supporting device 5 to support a workpiece 4 having a section in the form of circular arc, wherein the supporting device 5 comprises a rotary shaft 6 borne rotatably, ring-shaped members 15 and 16 fitted on the two ends in the axial direction of the rotary shaft 6, supporting members 21, 21 mounted on the members 15 and 16, and a plurality of clamping mechanisms 12 installed o the peripherals of the supporting members 21, 21. The two ends of the workpiece 4 are supported from the inside by the supporting members 21, 21 and grasped by the clamping mechanism 12. In the case the dimension in the longitudinal direction of the workpiece 4 varies, the fixing positions of the members 15 and 16 in the longitudinal direction of the rotary shaft 6 are changed, in the case the size of the arc of circle on the work section varies, the sizes of the supporting members 21, 21 to be mounted on the ring-shaped members 15 and 16 are changed.
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