18411461. MANUFACTURING METHOD FOR FASTENING STRUCTURE simplified abstract (TOYOTA JIDOSHA KABUSHIKI KAISHA)

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MANUFACTURING METHOD FOR FASTENING STRUCTURE

Organization Name

TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor(s)

Shinya Nagashima of Kariya-shi (JP)

Toshiyuki Dobashi of Nagoya-shi (JP)

Nobuyuki Shinohara of Tajimi-shi (JP)

Mayumi Nakanishi of Okazaki-shi (JP)

Reona Takagishi of Tajimi-shi (JP)

MANUFACTURING METHOD FOR FASTENING STRUCTURE - A simplified explanation of the abstract

This abstract first appeared for US patent application 18411461 titled 'MANUFACTURING METHOD FOR FASTENING STRUCTURE

Simplified Explanation: The patent application describes a process where a self-piercing rivet is driven into a first member that has been die-cast, while the heat from casting is still present in the first member. This results in the rivet being driven into the first member at a higher ductility state, reducing the likelihood of cracking during the driving step.

  • The first member is cast by die casting.
  • A self-piercing rivet is driven into the first member from the second member side.
  • Heat from casting remains in the first member during the driving step.
  • The self-piercing rivet is driven into the first member at a higher ductility state.
  • This reduces the likelihood of cracking in the first member during the driving step.

Potential Applications: This technology could be applied in automotive manufacturing, construction, and other industries where joining metal parts is necessary.

Problems Solved: This technology addresses the issue of cracking in the first member during the driving step of a self-piercing rivet, which can occur when the ductility of the metal is not optimal.

Benefits: The benefits of this technology include improved structural integrity of the joined parts, reduced risk of cracking, and potentially faster and more efficient assembly processes.

Commercial Applications: The technology could be used in the automotive industry for assembling car body parts, in construction for joining metal components, and in various other manufacturing processes where metal parts need to be securely joined.

Questions about Self-Piercing Rivet Technology: 1. How does the presence of heat from casting affect the ductility of the first member during the driving step? 2. What are the potential cost savings associated with using self-piercing rivet technology in manufacturing processes?


Original Abstract Submitted

In a casting step, a first member is cast by die casting. In the driving step after the casting step, a self-piercing rivet is driven into, from a second member side, an overlapping part in which the second member overlaps the first member, while heat from casting remains in the first member. As a result, the self-piercing rivet is driven into the first member in a state that the ductility is higher than that at the normal temperature. Therefore, the first member is less likely to crack during the driving step.

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