| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a bow stick for a stringed instrument, which is capable of finely and easily adjusting a weight distribution, a gravity center position, and a weight of the bow stick. <P>SOLUTION: The method for manufacturing a bow stick 1 which is used for a stringed instrument and is made of fiber-reinforced plastics includes: a step of winding a prepreg having fibers impregnated with resin, around a core bar having a diameter gradually reduced toward the front end thereof; a step of installing an intermediate body with the prepreg wound around the core bar in a mold and then heating and pressurizing the intermediate body in the mold to mold the intermediate body into a shape corresponding to a cavity formed between the mold and the core bar; and a step of extracting the core bar from the molding molded into the shape corresponding to the cavity to obtain a hollow and long-sized stick body 1A. When at least one of a weight distribution, a gravity center position, and a weight of the stick body 1A is adjusted, a diameter or diameter variation of the core bar is stepwise varied in an axial direction to vary the capacity of the cavity. <P>COPYRIGHT: (C)2013,JPO&INPIT |
