| 摘要 |
A terminal crimping apparatus includes an anvil for supporting a metal terminal including a base plate portion for placing an electric wire thereon and a pair of crimping piece portions extending upwardly respectively from opposite side edges of the base plate portion, and a crimper which includes a press-fastening portion having a generally arch-shape formed of two arc-shaped surfaces which are opposed to the anvil. The anvil and the crimper cooperate to press-fasten the crimping piece portions for crimping the crimping piece portions to the electric wire placed on the metal terminal. A radius R of curvature of each of the two arc-shaped surfaces of the press-fastening portion of the crimper is determined so as to satisfy the following formula: 0.25 W<=R<=0.27 W, where W represents a predetermined width of a crimped portion to be formed.
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