METHOD FOR JOINING METAL COMPONENT, METHOD FOR MANUFACTURING JOINT COMPONENT, AND JOINT STRUCTURE OF METAL COMPONENT

• Main Authors: TOBITA SHUNSUKE, IIZUKA EIJI
• Format: Patent
• Language: English; Japanese
• Published: 09.08.2022
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

To provide a caulking joint technique using burring processing which can secure sufficient joint strength without complicating a structure of a mold.SOLUTION: A method for joining a metal component caulks and joins a flange part 2A formed by burring processing, of plate-like parts of a plurality of metal components. The method includes a recessed shape formation step 102 of forming a region as an outer peripheral part of a lower hole 2a as a recessed shape 3 that is a recess on a side opposite to a burring rising direction, before burring processing, wherein a region as the flange part 2A is set in the recessed shape 3, and the caulking step caulks the flange part 2A after or while pushing up the part of the recessed shape 3 after the burring processing in the rising direction.SELECTED DRAWING: Figure 7 【課題】金型の構造を複雑化することなく、十分な接合強度を確保できる、バーリング加工を用いたかしめ接合の技術を提供する。【解決手段】複数の金属部品の板状部を、バーリング加工で形成されたフランジ部２Ａをかしめて接合する金属部品の接合方法であって、バーリング加工の前に、下穴２ａの外周部となる領域を、バーリングの立ち上げ方向とは反対側に凹の凹形状３とする凹形状形成工程１０２を有し、上記凹形状３内に、上記フランジ部２Ａとなる領域が設定され、かしめ工程において、上記バーリング加工後の凹形状３の部分を、上記立ち上げ方向に押し上げてから、若しくは押し上げつつ、上記フランジ部２Ａをかしめる。【選択図】図７