| 摘要 |
A method for making a spark plug (50) is provided. The method comprises the steps of, for adjustment of a spark gap (g), provisionally pressing a ground electrode (54) toward a leading end surface of a center electrode (53) and thereby decreasing the spark gap (g) to a predetermined value larger than a final target gap (gt), after the step of provisionally pressing the ground electrode (54), performing an adjustment bending process for eliminating an eccentricity ( ´ ) of the ground electrode (54) in the widthwise direction thereof with respect to a target position, after the step of performing the adjustment bending process, measuring the spark gap (g1) and measuring a difference (g1-gt) between the measured spark gap g1 and the final target gap gt, and pressing the ground electrode toward the center electrode when the difference (g1-gt) is positive. A system for making a spark plug is also provided. |
