Patent ID: 8053943
Filing Date: 2011-11-08
Classification: B21F,B21H,H02K,Y10T

Abstract:
1. A flat-type wire manufacturing method comprising: feeding a metal wire between the first rolling rolls controlled to relatively come close to and away from each other, thereby forming an intermediate wire material whose thickness periodically and continuously change, subsequently feeding the intermediate wire material between second rolling rolls while the second rolling rolls are controlled to relatively come close to and away from each other so that a second roll distance inversely decreases and increases in correspondence to the increase and decrease of thickness of the intermediate wire material, thereby producing a flat-type wire whose final thickness and width periodically and continuously change in the longitudinal direction, and wherein an intermediate wire material thickness measuring instrument before the feeding of the intermediate wire material to between the second rolling rolls detects upper and lower limits of thickness of the intermediate wire material and instructs either operation of a start of increase of the second roll distance and a start of decrease thereof.