| 摘要 |
A spark plug fabricating machine and a method using the same are provided. The fabricating machine is designed to bend a plurality of electrode bars to fabricate L-shaped ground electrodes which have ends facing a center electrode through spark gaps, respectively. The fabricating machine includes a press mechanism and a holder supporting mechanism. The press mechanism works to press the electrode bars welded to a housing retained by a housing holder against a first die. The first die is held between the electrode bars and has curves each contoured to conform with an L-shape of the ground electrodes. Specifically, the press mechanism moves a second die to press each of the electrode bars against a corresponding one of the curves of the first die. The holder supporting mechanism supports the housing holder so as to allow each of the electrode bars to swing in substantially the same direction as movement of the second die for absorbing a clearance between each of the electrode bars and the first die to establish a direct contact between the electrode bar and the curve of the first die when the electrode bar is bent by the second die, thereby resulting in uniformity of bend angles of the ground electrodes.
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