JP-7857061-B2 - Manufacturing method of a jointed structure

JP7857061B2JP 7857061 B2JP7857061 B2JP 7857061B2JP-7857061-B2

Inventors

浅井雄一

Assignees

ダイハツ工業株式会社

Dates

Publication Date: 20260512
Application Date: 20220328

Claims (1)

Step A involves preparing multiple sheet materials, including a first sheet material and a second sheet material made of metal. Step B involves stacking the plurality of plate materials on top of each other to form a laminated region having the first plate material and the second plate material as the outermost layer, Step C involves making radial cuts through the first plate material in the laminated region to form a plurality of first pieces that are partitioned from each other, Step D involves bending the plurality of first pieces in a first direction from the first plate material toward the second plate material to form a first through-hole in the first plate material that is coaxial with the second through-hole in the second plate material, The process includes step E, which involves folding the plurality of first pieces back toward the outer circumference of the first through-hole, thereby sandwiching the second plate material between the first pieces and the first plate material. Each of the aforementioned steps C , D, and E is performed with the plurality of plate materials sandwiched from both sides in the stacking direction by the first support mechanism and the second support mechanism. The first support mechanism has a cylindrical first leg portion that surrounds the outer circumference of the second tool that folds back the plurality of first pieces, The second support mechanism has a cylindrical second leg portion that surrounds the outer circumference of the first tool used to make the cut, The second through-hole satisfies either requirement (A) or requirement (B) below: A method for manufacturing a bonded structure. (A) In step C, radial cuts are made through the second plate material together with the first plate material to form a plurality of partitioned second pieces, and in step D, the plurality of second pieces are bent in the first direction together with the plurality of first pieces to form the second pieces. (B) Provided in advance on the second plate material in step A.

Description

This invention relates to a method for manufacturing a jointed structure in which multiple plate materials are joined together. Patent Document 1 discloses spot welding. Spot welding involves sandwiching multiple panels between a pair of electrodes facing each other and welding the panels together by passing current between the electrodes. Japanese Patent Publication No. 2004-306096 Figure 1 is an explanatory diagram illustrating steps A to D of the manufacturing method of a joined structure according to an embodiment.Figure 2 is an explanatory diagram illustrating step E of the manufacturing method of a joined structure according to an embodiment.Figure 3 is a cross-sectional view showing a jointed structure manufactured by the method for manufacturing a jointed structure according to the embodiment.Figure 4 is an explanatory diagram illustrating a plurality of first pieces formed in step C of the manufacturing method of a joined structure according to the embodiment.Figure 5 is an explanatory diagram illustrating a method for manufacturing a modified joint structure. 《Embodiment》 [Method for manufacturing a jointed structure] A method for manufacturing a joined structure according to the embodiment will be described below with reference to Figures 1 to 4. In Figures 1 and 2, hatching of the cross-sections of the multiple plate materials 10 is omitted for the sake of clarity. The method for manufacturing a joined structure according to the embodiment involves joining multiple plate materials 10 to each other. The method for manufacturing a joined structure according to the embodiment comprises a step A of preparing multiple plate materials 10 and a step B of creating a laminated region by overlapping the multiple plate materials 10. One of the features of the method for manufacturing a joined structure according to the embodiment is that it further comprises specific steps C to E. In the following description, the side of the second plate material 12 facing the first plate material 11 is referred to as the upper side, and the side of the first plate material 11 facing the second plate material 12 is referred to as the lower side. [Process A] The multiple sheet materials 10 prepared in process A may all have the same constituent materials, or at least one sheet material may have different constituent materials from the remaining sheet materials. Having the same constituent materials means that the types of constituent elements are the same and the content of those elements is the same. Having different constituent materials means that the types of constituent elements are different, or that the types of constituent elements are the same and the content of those elements is different. In this embodiment, the plurality of plate materials 10 consist of two plate materials: a first plate material 11 and a second plate material 12. The material of the first plate material 11 is metal. Examples of metals include aluminum, aluminum alloy, iron, and iron alloy. In this embodiment, the first plate material 11 is an iron plate. The material of the second plate material 12 is also metal in this embodiment. Examples of metals are the same as those for the first plate material 11. In this embodiment, the second plate material 12 is an aluminum plate. Unlike this embodiment, the material of the second plate material 12 may be a non-metallic material. Examples of non-metallic materials include resin or rubber. Unlike this embodiment, the plurality of plate materials 10 may consist of three or more plate materials. [Process B] In step B, as shown in the left diagram of Figure 1, multiple plates 10 are stacked so that the first plate 11 and the second plate 12 are each located in the outermost layer of the stacking region. The first plate 11 is placed facing the first tool 1 (described later), and the second plate 12 is placed facing the second tool 2 (described later). Here, the first plate 11 is placed on top of the second plate 12. Unlike this embodiment, if there are three or more plates 10, plates other than the first plate 11 and the second plate 12 are placed between the first plate 11 and the second plate 12. [Process C] Step C involves making radial cuts through the first plate material 11 in the laminated region, as shown in the center view of Figure 1. Figure 4 shows an example of the cuts 11a formed in the first plate material 11. Figure 4 shows the cuts 11a formed in the first plate material 11 as viewed from the first tool 1 towards the second tool 2. By forming the cuts 11a, multiple first pieces 11b are formed in the first plate material 11. The number of first pieces 11b is not particularly limited as long as there are three or more. In this embodiment, four first pieces 11b are formed. The multiple first pieces 11b are separated from each other by the cuts 11a. In this embodiment, radial cuts are made in both the first plate material 11 and the second plate material 12, penetrating the second plate materia