| 摘要 |
PROBLEM TO BE SOLVED: To provide a member joining method capable of improving joining strength and being used also for a difficult-to-work member with high strength.SOLUTION: In a member joining method, a steel component 1 and an aluminum component 10 with a through hole 11 are prepared. Using a first metal mold set 20, the steel component 1 is partially swollen while being elastically pressed, and a projection 2 having a first diameter Ds larger than a second diameter De in a final shape insertable into the through hole 11 is formed in the steel component 1. Using a second metallic set 30, the projection 2 is formed to reduce the diameter from the first diameter Ds to the second diameter Ds. Using a third metallic set 40, the projection 2 is crushed in a state of overlapping the steel component 1 and the aluminum component 10 so that the projection 2 is inserted into the through hole 11, and the steel component 1 and the aluminum component 10 are caulked.SELECTED DRAWING: Figure 1 |
