| 摘要 |
PURPOSE: A method for manufacturing a spark plug and a device thereof are provided to improve quality of the spark plug while reducing the failures rates by correcting a position of a ground electrode and a central electrode with a ground electrode correction device. CONSTITUTION: A method for manufacturing a spark plug comprises the following: a fixing jig(80) fixing a metal housing in which an insulating body assembly is mounted; a correcting roller(82a,82b) moved and rotated with a ground electrode; and an elevating device adjusting intervals of the fixing jig and the correcting jig. The elevating device is formed to raise the correcting jig. |
