WORKING LINE DEVICE FOR ROUND WORK IN CROSS SECTION

PROBLEM TO BE SOLVED: To enable many kinds of productions of hole opening or the like by making to coincide the position of the central height of works having different diameters fed with a work feeding line with the position of working height and clamping these works with an aligning clamp to equalize the position of the central height of works. SOLUTION: Three claw members 80 being the clamp member are arranged in the circumferential direction at equal interval in the front surface of the device main body 73 of the aligning clamp device. The rear end parts of the claw members 80 reach the front surface of a rotating member 76 through the opening part formed in a cover member 77. A spiral groove 76B making the rotating center part of the rotating member 76 the center is formed in the front surface of the rotating member 76, and the rear end parts of claw members 80 are engaged with the spiral groove 76B. When the rotating member 76 rotates, claw members 80 are simultaneously moved in the radial direction the same quality each. After the work W is inserted into the through hole 73A formed in the device main body 73, claw members 80 are moved, the center of the work W is made to coincide with the center part of the device main body 73, and the work W is clamped with claw members 80.