摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a golf club shaft capable of pulling out a mandrel from the golf club shaft without damaging it. <P>SOLUTION: This manufacturing method of the golf club shaft executes the following (1)-(6). (1) Prepreg is wound around and laminated on the mandrel to expose the large-diameter side end part of the mandrel to provide a prepreg laminated body, (2) a tape-like prepreg is wound around the end part of the prepreg laminated body and the mandrel to form a reinforced part 3, (3) the obtained laminated prepreg is hardened by heat to provide the shaft with the reinforced part 3 on the mandrel, (4) a member 4 having a hole allowing the passing of the large-diameter side end part of the mandrel but preventing the passing of the reinforced part 3 is inserted from the large-diameter side end of the mandrel and mounted on the reinforced part 3, (5) the member 4 with the hole is supported, and the mandrel is pulled out from the shaft 1, and (6) the end portion of the shaft 1 including the reinforced part 3 is cut off. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |