| 主权项 |
1. A method for cutting a work using a single-wire type wire saw wherein a pair of grooved guide rollers are rotatably contacted externally with a wire stretched with predetermined tension by respective roller shafts of the pair of grooved guide rollers with the same direction, a work is placed in a cutting area between the pair of grooved guide rollers, with a cutting-feeding direction previously set in a direction opposed to a wire support direction of the pair of grooved guide rollers, the work is fed in the cutting-feeding direction relatively to the wire to press a cutting position of the work against the wire, and the work is cut along a cutting line by traveling the wire, the cutting method comprising:
holding the wire at the cutting position of the work by supports arms and a movable operation shaft,
wherein the support arms connect to the roller shafts respectively and extend in a direction of the roller shafts, andthe movable operation shaft supports the support arms rotatably and a shaft of the operation shaft is parallel to a center axis of the wire, moving the operation shaft along an arc around the center axis of the wire in the cutting area, when the cutting-feeding direction changes during a cutting of the work; and rotating the support arms around the operation shaft simultaneously with the moving of the operation shaft to thereby oppose the wire support direction of the pair of grooved guide rollers to the cutting-feeding direction. |
