| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a casing of a pipe material correction device and the pipe material correction device which can install a pipe material with a simple technique and can perform circularity correction of the pipe material.SOLUTION: A casing of a pipe material correction device includes: a casing main body 3 which is formed around an axis line P as the center, allows an inner circumferential surface 3a to be fitted to an outer surface Wa of a pipe material W in a region of one edge part Wt of the pipe material W and allows the pipe material W to be pressed by using the inner circumferential surface 3a as a circularity correction mold surface; and a detachable member 11 which is provided detachably on a groove part 10 depressed over the whole region in the direction of the axis line P toward the outside in the radial direction at a part in the circumferential direction of the inner circumferential surface 3a of the casing main body 3, is attached to the groove part 10 and has a contact surface 11c flush with the inner circumferential surface 3a of the casing main body 3 while the casing main body 3 is fitted to the pipe material W and coming into contact with the outer surface Wa of the pipe material W. Therein, the groove part 10 is formed in such a size that the outer surface Wa of the pipe material W on the edge part position of a major axis of an ellipse does not interfere in such a state that the detachable member 11 is detached and the cross-section orthogonal to the axial line P is flattened into a shape of the ellipse in the region of one edge part of the pipe material W.</p> |
