JPS60216935A - Joining method of metallic member - Google Patents

Abstract

PURPOSE:To join members together in high adhesive-degree and in excellent strength and to mak a process short, by plastically flowing the members with each other under a restricting formation and joining the members together by deforming them. CONSTITUTION:When a restricting formation is started in a state of mounting a slug 4 on a lower die and a pin 5 on an upper punch 8 after boring a hole in the slug 4 for inserting the pin 5, the pin 5 is inserted to the position where a space 9 is left at its front end. Thereafter, when the punch 8 is lowered, a compressive force is added to the diametral direction of the inserted pin 5 by a pressing force P of punch 8, and when the force P exceeds the yielding point of pin 5, the pin 5 extends its front end into the space 9 while flowing plastically. And an intermediate part 10 is contracted to tightly contact with the plastically flowing part of slug 4, and is joined to each other, thereby forming the appearance.

Description

[Detailed description of the invention] The present invention relates to a method for joining metal members.

In the past, a common method for joining metal members was to use partial plastic deformation as shown in FIG.

This is drilled into the metal member A1. This was a method of connecting metal members 'AI and B by causing A1 to plastically flow and protrude. However, in this bonding method, the bonding strength is affected by the shape of the groove or the position of the stamps provided in advance on the member to be lightly press-fitted, and the setting conditions are difficult to set.

In view of the above problems, the present invention provides metal member A with metal member B.
The present invention provides a method for joining metal members, in which the inserted portion of the metal member B is compressed and joined by the restraint molding of the metal member A.

The present invention will be explained below based on the drawings.

First, as shown in FIG. 2, a hole 6 into which the bottle 5 is inserted is formed in the slug 4, and a lower mold 7 is formed as shown in FIG.
Restraint molding is started with the slug 4 attached to the slug 4 and the pin 5 attached to the mold punch 8 at -, and the pin 5 is inserted to a position leaving a gap 9 at the tip, as shown in FIG. be done. After that, the lowering of the upper die punch 8 is started, and the pressing force P
W tightening force is applied in the radial direction of the inserted bottle 5, and when the pressing force P exceeds the yield point of the bottle 5, plastic flow occurs and the bottle 5
The tip portion extends into the gap, and the intermediate portion 10 is constricted and deformed to tightly connect with the plastic flow portion of the slug 4. At the same time, the external appearance as shown in FIG. 4 is formed.

When the shaft 12 is inserted into the thick-walled pipe 11 and the thick-walled vibrator 11 is restrained and compressed as shown in FIG. 5, (b), the thick-walled vibrator 11
It is possible to couple the shaft 12 with the shaft 12.

As detailed above, the method for joining metal members according to the present invention involves restraining and pressurizing part A, and compressing and deforming member B to be joined at the same time as appearance molding to join the plastic flow portion to the member. It is something. As seen in the examples, it can be combined with a bottle or shaft at the same time as forming the external appearance.
The degree of adhesion is extremely high, as the members are plastically fluidized and deformed by constraint molding, and are extremely strong. There is no need to process grooves for joining, and the process can be shortened. Since the bottles or shafts to be joined are joined while being regulated, highly accurate joining can be achieved that prevents center runout.

[Brief explanation of drawings]

Figure 1 shows a conventional method of joining metal members. Figure 2 shows
FIG. 3 is a diagram of parts of an embodiment according to the present invention. FIGS. 5A and 5B are views showing an embodiment of the method for joining metal members according to the present invention. FIG. 4 is a diagram of a product joined by the method of joining metal members according to the present invention. FIGS. 5A and 5B are views showing another embodiment of the method for joining metal members according to the present invention. 1: Metal part A1': Surroundings 2: Hole 3 = Metal part B3': Groove 4 Varnish slug 5: Bin 6: Hole 7: Lower mold 8: Upper mold bunch 9: Gap 10: Intermediate part 11: Thick-walled pipe 12: Shaft

Claims (1)

[Claims] (1) Insert metal member B into the hole provided in metal member A,
A method for joining metal members, characterized in that the insertion portion of the metal member B is compressively deformed by the metal member A and plastically joined by constraint forming the metal member A. (2) The method of joining metal members according to claim 1, wherein a blind hole is provided in the metal member A, and the metal member B is inserted into the blind hole, leaving a gap at the tip thereof.