| 摘要 |
A coil-spring winding apparatus according to the present invention comprises a guide rail extending along the axis of a mandrel, and a carriage movably supported by the guide rail. The carriage is fitted with first and second guide rollers. The second guide roller, which is spaced from the first guide roller in the radial direction thereof, guides the coil forming a coil spring toward the first guide roller. The first guide roller is moved in the axial direction of the mandrel, at a speed determined by the rotating speed of the mandrel, so that the coil is wound at predetermined pitches. The second guide roller can pivot around a point near the point of contact between the first guide roller and the coil. The first guide roller is oriented always in the same direction as the second guide roller. The direction of these two guide rollers is changed by means of an actuator, depending on the pitch angle of the coil spring.
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