| 摘要 |
PURPOSE:To cause a plastic flow in a joining part of a contact, and to join it firmly in a short time when a contact is welded on a base metal by providing grooves of one group on a joint surface of the base metal, performing tin plating, and applying an ultrasonic vibration being parallel to a line of the groove. CONSTITUTION:V-grooves 11 of one group are provided in the direction orthogonal to a longitudinal axis on the joint surface side of a base metal 10, and also tin plating is performed to the base metal 10 by a prescribed thickness. Subsequently, a square piece-shaped contact 9 is placed on the V-grooves 11 of one group of the base metal 10, also the base metal 10 is placed on a knurling division 8 of an anvil 5, and a knurling division 4 of a horn head 2 is pressed against the upper face of the contact 9. Subsequently, an ultrasonic wave is applied to the horn head 2, and the horn head 2 is vibrated by an ultrasonic wave in parallel to the line of the V-group 11. |
