Method of manufacturing of pressure contact blades adaptable to extrafine strands

摘要

In an extrafine-strand-adaptable contact pressure blade (23), parts of the mutually opposed right and left side wall portions (31) of a pressure contact part (25) having a substantially U-shaped vertical section are formed by blanking so as to project inwardly in part in a substantially V-like shape, and the whole contact area of the right and left pressure contact blades (23) with respect to the core of a wire is set at a value (equal to or larger than 0.15mm<2>) which allows a slot width settable range to be determined by a pressure contact test to be larger than a tolerance range caused by a manufacturing tolerance.