| 摘要 |
<p>PURPOSE:To eliminate an irregularity in a tip contact part of extremely thin wires and a stepped part (a scattered part) by a method wherein a wire bundle of the extremely thin wires is supplied to a belt-shaped base material from one side direction and the wire bundle of the extremely thin wires is cut after a welding operation so that a cut end can become a free end so as to release a restriction. CONSTITUTION:Streak protrusions 12 are formed at prescribed intervals in the central part of a belt-shaped base material 1 composed of Cu-Ni in its lengthwise direction; then, a wire bundle 6 of extremely thin wires 5 which have been lined up horizontally and bundled is supplied from a direction perpendicular to the belt-shaped base material 1; a tip of the wire bundle 6 is resistancewelded to the streak protrusion 12. Then, the bundle 6 is cut to a prescribed length; then, the belt-shaped base material 1 is shifted to its lengthwise direction. Then, a prescribed part from a cut end of a wire bundle 6, which has been welded to the belt-shaped base material 1 is bent at nearly 90 deg., a contact part 7 is formed; after that, this process is repeated; a sliding brush material 13 is obtained. By this setup, an irregularity and a stepped part at the tip contact part of the extremely thin wires are not produced; the dimensional accuracy becomes high; the quality is enhanced.</p> |
