LASER BEAM MACHINE AND HOLDING DEVICE

PROBLEM TO BE SOLVED: To provide a laser beam machine and a holding device enhancing working precision.SOLUTION: This holding device 10 for the laser beam machine 1 includes a reception member 32 mounted with a thin sheet W, a wall part 32b erected in a rear end side of a mounting face 32a of the reception member 32, an energizing member 35 arranged in an upper stage part 32c formed step-differently on the mounting face 32a, and a press member 33 having a long pressing face 33a opposed to the mounting face 32a while energized upwards by the energizing member 35, clamping is thereby allowed without generating a strain in the thin sheet W, between the press member 33 and the reception member 32, using a fastening member 34, and an elastic deformation amount of the thin sheet W is prevented from being dispersed to enhance the working precision. Further, the thin sheet W is prevented from butting against the wall part 32b, and sufficient tension is imparted to the thin sheet W, because a distance between wall parts of the first clamping part 20 and the second clamping part 30 is set to be larger than the maximum value of a dimensional tolerance of the thin sheet W. The working precision is enhanced by this manner.