| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a simple tubular body structure in which an inner diameter precision of a long-length and/or small-diameter tube composed of cutting-resistant ceramics, superhard high-speed steel or the like can be improved equal to or more than the prior arts, and surface roughness on its inner circumferential side can be arbitrarily adjusted. <P>SOLUTION: In a tubular body structure, a semi-cylindrical first member includes a first reference surface positioned at an inner circumferential side of the first member, a first step surface which is positioned at an outer circumferential side of the first member, and a pair of joint surfaces composed of first communication surfaces communicating the first reference surface and the first step surface. A semi-cylindrical second member includes a second reference surface which is positioned at an inner circumferential side of the second member, a second step surface which is positioned at an outer circumferential side of the second member, and a pair of second joint surfaces composed of second communication surfaces communicating the second reference surface and the second step surface. The first member and the second member are joined on the first joint surface and the second joint surface. The first reference surface is brought into contact with the second reference surface and the first communication surface is brought into contact with the second communication surface, respectively, without interposing adhesives. The first step surface is brought into contact with the second step surface via adhesives. <P>COPYRIGHT: (C)2012,JPO&INPIT |
